Wholesale conversion to #pragma once

Kudos to cgmb and https://github.com/cgmb/guardonce

Change-Id: Ifa8970734b8d43fd08c9260c645bdb0228633791
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

2107 files changed, 2096 insertions, 8469 deletions

diff --git a/src/app/app_version.h.in b/src/app/app_version.h.in
index 9aed843da3..b48d6bee4c 100644
--- a/src/app/app_version.h.in
+++ b/src/app/app_version.h.in
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef APP_VERSION_H
-#define APP_VERSION_H
+#pragma once
 
 namespace Core {
 namespace Constants {
@@ -76,5 +75,3 @@ const char * const IDE_COPY_SETTINGS_FROM_VARIANT_STR = \"Nokia\";
 
 } // Constants
 } // Core
-
-#endif //APP_VERSION_H
diff --git a/src/libs/3rdparty/cplusplus/AST.h b/src/libs/3rdparty/cplusplus/AST.h
index bcdf043362..fc6750320b 100644
--- a/src/libs/3rdparty/cplusplus/AST.h
+++ b/src/libs/3rdparty/cplusplus/AST.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_AST_H
-#define CPLUSPLUS_AST_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "ASTfwd.h"
@@ -4688,5 +4687,3 @@ protected:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_AST_H
diff --git a/src/libs/3rdparty/cplusplus/ASTMatcher.h b/src/libs/3rdparty/cplusplus/ASTMatcher.h
index ad622316da..f6f3eae8d9 100644
--- a/src/libs/3rdparty/cplusplus/ASTMatcher.h
+++ b/src/libs/3rdparty/cplusplus/ASTMatcher.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef ASTMATCHER_H
-#define ASTMATCHER_H
+#pragma once
 
 #include "ASTfwd.h"
 
@@ -184,5 +183,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_ASTMATCHER_H
diff --git a/src/libs/3rdparty/cplusplus/ASTVisitor.h b/src/libs/3rdparty/cplusplus/ASTVisitor.h
index 699694e9f9..46bfde340b 100644
--- a/src/libs/3rdparty/cplusplus/ASTVisitor.h
+++ b/src/libs/3rdparty/cplusplus/ASTVisitor.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_ASTVISITOR_H
-#define CPLUSPLUS_ASTVISITOR_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "ASTfwd.h"
@@ -380,5 +379,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_ASTVISITOR_H
diff --git a/src/libs/3rdparty/cplusplus/ASTfwd.h b/src/libs/3rdparty/cplusplus/ASTfwd.h
index 0dd8d04037..2c55fd27d6 100644
--- a/src/libs/3rdparty/cplusplus/ASTfwd.h
+++ b/src/libs/3rdparty/cplusplus/ASTfwd.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_ASTFWD_H
-#define CPLUSPLUS_ASTFWD_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -225,6 +224,3 @@ typedef List<ObjCSynthesizedPropertyAST *> ObjCSynthesizedPropertyListAST;
 typedef List<DesignatorAST *> DesignatorListAST;
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_ASTFWD_H
diff --git a/src/libs/3rdparty/cplusplus/Bind.h b/src/libs/3rdparty/cplusplus/Bind.h
index 2eb58d8f2e..54e88e95a8 100644
--- a/src/libs/3rdparty/cplusplus/Bind.h
+++ b/src/libs/3rdparty/cplusplus/Bind.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_BIND_H
-#define CPLUSPLUS_BIND_H
+#pragma once
 
 #include "ASTVisitor.h"
 #include "FullySpecifiedType.h"
@@ -291,5 +290,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_BIND_H
diff --git a/src/libs/3rdparty/cplusplus/CPlusPlus.h b/src/libs/3rdparty/cplusplus/CPlusPlus.h
index 5fedc986a8..0dbf0f1ed3 100644
--- a/src/libs/3rdparty/cplusplus/CPlusPlus.h
+++ b/src/libs/3rdparty/cplusplus/CPlusPlus.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_CPLUSPLUS_H
-#define CPLUSPLUS_CPLUSPLUS_H
+#pragma once
 
 #include "AST.h"
 #include "ASTMatcher.h"
@@ -52,5 +51,3 @@
 #include "Matcher.h"
 #include "TypeVisitor.h"
 #include "Templates.h"
-
-#endif // CPLUSPLUS_CPLUSPLUS_H
diff --git a/src/libs/3rdparty/cplusplus/CPlusPlusForwardDeclarations.h b/src/libs/3rdparty/cplusplus/CPlusPlusForwardDeclarations.h
index 9b1c5a30cf..bec7e77a5c 100644
--- a/src/libs/3rdparty/cplusplus/CPlusPlusForwardDeclarations.h
+++ b/src/libs/3rdparty/cplusplus/CPlusPlusForwardDeclarations.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_CPLUSPLUSFORWARDDECLARATIONS_H
-#define CPLUSPLUS_CPLUSPLUSFORWARDDECLARATIONS_H
+#pragma once
 
 #include <cstdlib>
 #include <cstddef>
@@ -136,5 +135,3 @@ class ObjCMethod;
 class ObjCPropertyDeclaration;
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_CPLUSPLUSFORWARDDECLARATIONS_H
diff --git a/src/libs/3rdparty/cplusplus/Control.h b/src/libs/3rdparty/cplusplus/Control.h
index 85b8c3d3d7..97c1503833 100644
--- a/src/libs/3rdparty/cplusplus/Control.h
+++ b/src/libs/3rdparty/cplusplus/Control.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_CONTROL_H
-#define CPLUSPLUS_CONTROL_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "ASTfwd.h"
@@ -227,6 +226,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_CONTROL_H
diff --git a/src/libs/3rdparty/cplusplus/CoreTypes.h b/src/libs/3rdparty/cplusplus/CoreTypes.h
index 04eee89498..c0d799c4f2 100644
--- a/src/libs/3rdparty/cplusplus/CoreTypes.h
+++ b/src/libs/3rdparty/cplusplus/CoreTypes.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_CORETYPES_H
-#define CPLUSPLUS_CORETYPES_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Type.h"
@@ -242,5 +241,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_CORETYPES_H
diff --git a/src/libs/3rdparty/cplusplus/DiagnosticClient.h b/src/libs/3rdparty/cplusplus/DiagnosticClient.h
index 98543de96b..108133b97e 100644
--- a/src/libs/3rdparty/cplusplus/DiagnosticClient.h
+++ b/src/libs/3rdparty/cplusplus/DiagnosticClient.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_DIAGNOSTICCLIENT_H
-#define CPLUSPLUS_DIAGNOSTICCLIENT_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include <cstdarg>
@@ -48,6 +47,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_DIAGNOSTICCLIENT_H
diff --git a/src/libs/3rdparty/cplusplus/FullySpecifiedType.h b/src/libs/3rdparty/cplusplus/FullySpecifiedType.h
index 8f20018465..5a7e33a2db 100644
--- a/src/libs/3rdparty/cplusplus/FullySpecifiedType.h
+++ b/src/libs/3rdparty/cplusplus/FullySpecifiedType.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_FULLYSPECIFIEDTYPE_H
-#define CPLUSPLUS_FULLYSPECIFIEDTYPE_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -149,5 +148,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_FULLYSPECIFIEDTYPE_H
diff --git a/src/libs/3rdparty/cplusplus/Lexer.h b/src/libs/3rdparty/cplusplus/Lexer.h
index 8e862ea54c..1acfcf31b0 100644
--- a/src/libs/3rdparty/cplusplus/Lexer.h
+++ b/src/libs/3rdparty/cplusplus/Lexer.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_LEXER_H
-#define CPLUSPLUS_LEXER_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Token.h"
@@ -158,5 +157,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_LEXER_H
diff --git a/src/libs/3rdparty/cplusplus/LiteralTable.h b/src/libs/3rdparty/cplusplus/LiteralTable.h
index 517e5d1539..5a3f1e9042 100644
--- a/src/libs/3rdparty/cplusplus/LiteralTable.h
+++ b/src/libs/3rdparty/cplusplus/LiteralTable.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_LITERALTABLE_H
-#define CPLUSPLUS_LITERALTABLE_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include <cstring>
@@ -164,6 +163,3 @@ protected:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_LITERALTABLE_H
diff --git a/src/libs/3rdparty/cplusplus/Literals.h b/src/libs/3rdparty/cplusplus/Literals.h
index 0dfb7a1c04..19255b619b 100644
--- a/src/libs/3rdparty/cplusplus/Literals.h
+++ b/src/libs/3rdparty/cplusplus/Literals.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_LITERALS_H
-#define CPLUSPLUS_LITERALS_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Token.h"
@@ -124,6 +123,3 @@ protected:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_LITERALS_H
diff --git a/src/libs/3rdparty/cplusplus/Matcher.h b/src/libs/3rdparty/cplusplus/Matcher.h
index f63ea7ef5b..6a8da9a7b7 100644
--- a/src/libs/3rdparty/cplusplus/Matcher.h
+++ b/src/libs/3rdparty/cplusplus/Matcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TYPEMATCHER_H
-#define TYPEMATCHER_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -75,5 +74,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // TYPEMATCHER_H
diff --git a/src/libs/3rdparty/cplusplus/MemoryPool.h b/src/libs/3rdparty/cplusplus/MemoryPool.h
index ee56aaf9de..ec97d8fd03 100644
--- a/src/libs/3rdparty/cplusplus/MemoryPool.h
+++ b/src/libs/3rdparty/cplusplus/MemoryPool.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_MEMORYPOOL_H
-#define CPLUSPLUS_MEMORYPOOL_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include <new>
@@ -82,5 +81,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_MEMORYPOOL_H
diff --git a/src/libs/3rdparty/cplusplus/Name.h b/src/libs/3rdparty/cplusplus/Name.h
index 507195bead..200ccac75d 100644
--- a/src/libs/3rdparty/cplusplus/Name.h
+++ b/src/libs/3rdparty/cplusplus/Name.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_NAME_H
-#define CPLUSPLUS_NAME_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Matcher.h"
@@ -73,6 +72,3 @@ protected: // for Matcher
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_NAME_H
diff --git a/src/libs/3rdparty/cplusplus/NameVisitor.h b/src/libs/3rdparty/cplusplus/NameVisitor.h
index c2a5f89da6..b0b737446d 100644
--- a/src/libs/3rdparty/cplusplus/NameVisitor.h
+++ b/src/libs/3rdparty/cplusplus/NameVisitor.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_NAMEVISITOR_H
-#define CPLUSPLUS_NAMEVISITOR_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -51,6 +50,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_NAMEVISITOR_H
diff --git a/src/libs/3rdparty/cplusplus/Names.h b/src/libs/3rdparty/cplusplus/Names.h
index 33f40d523d..eaf8e956d4 100644
--- a/src/libs/3rdparty/cplusplus/Names.h
+++ b/src/libs/3rdparty/cplusplus/Names.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_NAMES_H
-#define CPLUSPLUS_NAMES_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Name.h"
@@ -273,5 +272,3 @@ private:
 
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_NAMES_H
diff --git a/src/libs/3rdparty/cplusplus/Parser.h b/src/libs/3rdparty/cplusplus/Parser.h
index 1c69c21896..004d533109 100644
--- a/src/libs/3rdparty/cplusplus/Parser.h
+++ b/src/libs/3rdparty/cplusplus/Parser.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_PARSER_H
-#define CPLUSPLUS_PARSER_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "ASTfwd.h"
@@ -336,6 +335,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_PARSER_H
diff --git a/src/libs/3rdparty/cplusplus/QtContextKeywords.h b/src/libs/3rdparty/cplusplus/QtContextKeywords.h
index a7a1f1c3f8..edef73a7ee 100644
--- a/src/libs/3rdparty/cplusplus/QtContextKeywords.h
+++ b/src/libs/3rdparty/cplusplus/QtContextKeywords.h
@@ -1,6 +1,5 @@
 
-#ifndef QTCONTEXTKEYWORDS_H
-#define QTCONTEXTKEYWORDS_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -24,5 +23,3 @@ enum {
 
 CPLUSPLUS_EXPORT int classifyQtContextKeyword(const char *s, int n);
 } // namespace CPlusPlus;
-
-#endif // QTCONTEXTKEYWORDS_H
diff --git a/src/libs/3rdparty/cplusplus/Scope.h b/src/libs/3rdparty/cplusplus/Scope.h
index 142138698e..01a5b7450d 100644
--- a/src/libs/3rdparty/cplusplus/Scope.h
+++ b/src/libs/3rdparty/cplusplus/Scope.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_SCOPE_H
-#define CPLUSPLUS_SCOPE_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Symbol.h"
@@ -78,6 +77,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_SCOPE_H
diff --git a/src/libs/3rdparty/cplusplus/Symbol.h b/src/libs/3rdparty/cplusplus/Symbol.h
index 919268b14b..417217e469 100644
--- a/src/libs/3rdparty/cplusplus/Symbol.h
+++ b/src/libs/3rdparty/cplusplus/Symbol.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_SYMBOL_H
-#define CPLUSPLUS_SYMBOL_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -325,6 +324,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_SYMBOL_H
diff --git a/src/libs/3rdparty/cplusplus/SymbolVisitor.h b/src/libs/3rdparty/cplusplus/SymbolVisitor.h
index 4311672eca..4ed81c657c 100644
--- a/src/libs/3rdparty/cplusplus/SymbolVisitor.h
+++ b/src/libs/3rdparty/cplusplus/SymbolVisitor.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef SYMBOLVISITOR_H
-#define SYMBOLVISITOR_H
+#pragma once
 
 #include "Symbol.h"
 
@@ -71,6 +70,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // SYMBOLVISITOR_H
diff --git a/src/libs/3rdparty/cplusplus/Symbols.h b/src/libs/3rdparty/cplusplus/Symbols.h
index 257bdb8682..826c816b69 100644
--- a/src/libs/3rdparty/cplusplus/Symbols.h
+++ b/src/libs/3rdparty/cplusplus/Symbols.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_SYMBOLS_H
-#define CPLUSPLUS_SYMBOLS_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "Symbol.h"
@@ -911,6 +910,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_SYMBOLS_H
diff --git a/src/libs/3rdparty/cplusplus/Templates.h b/src/libs/3rdparty/cplusplus/Templates.h
index 9db69084f7..67b57a6296 100644
--- a/src/libs/3rdparty/cplusplus/Templates.h
+++ b/src/libs/3rdparty/cplusplus/Templates.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_TEMPLATES_H
-#define CPLUSPLUS_TEMPLATES_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "TypeVisitor.h"
@@ -207,5 +206,3 @@ private:
 };
 
 } // end of namespace CPlusPlus
-
-#endif // CPLUSPLUS_TEMPLATES_H
diff --git a/src/libs/3rdparty/cplusplus/Token.h b/src/libs/3rdparty/cplusplus/Token.h
index afe732d493..358587366e 100644
--- a/src/libs/3rdparty/cplusplus/Token.h
+++ b/src/libs/3rdparty/cplusplus/Token.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_TOKEN_H
-#define CPLUSPLUS_TOKEN_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -422,5 +421,3 @@ struct LanguageFeatures
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_TOKEN_H
diff --git a/src/libs/3rdparty/cplusplus/TranslationUnit.h b/src/libs/3rdparty/cplusplus/TranslationUnit.h
index 94eb81666b..5b28cbd6e2 100644
--- a/src/libs/3rdparty/cplusplus/TranslationUnit.h
+++ b/src/libs/3rdparty/cplusplus/TranslationUnit.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_TRANSLATIONUNIT_H
-#define CPLUSPLUS_TRANSLATIONUNIT_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 #include "ASTfwd.h"
@@ -213,6 +212,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_TRANSLATIONUNIT_H
diff --git a/src/libs/3rdparty/cplusplus/Type.h b/src/libs/3rdparty/cplusplus/Type.h
index 958ba15efd..25f260c2cd 100644
--- a/src/libs/3rdparty/cplusplus/Type.h
+++ b/src/libs/3rdparty/cplusplus/Type.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_TYPE_H
-#define CPLUSPLUS_TYPE_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -108,5 +107,3 @@ protected: // for Matcher
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_TYPE_H
diff --git a/src/libs/3rdparty/cplusplus/TypeVisitor.h b/src/libs/3rdparty/cplusplus/TypeVisitor.h
index b3a24b1572..bf69a8b8be 100644
--- a/src/libs/3rdparty/cplusplus/TypeVisitor.h
+++ b/src/libs/3rdparty/cplusplus/TypeVisitor.h
@@ -18,8 +18,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#ifndef CPLUSPLUS_TYPEVISITOR_H
-#define CPLUSPLUS_TYPEVISITOR_H
+#pragma once
 
 #include "CPlusPlusForwardDeclarations.h"
 
@@ -62,6 +61,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-
-#endif // CPLUSPLUS_TYPEVISITOR_H
diff --git a/src/libs/3rdparty/cplusplus/cppassert.h b/src/libs/3rdparty/cplusplus/cppassert.h
index 7f8c225f30..828b5bc695 100644
--- a/src/libs/3rdparty/cplusplus/cppassert.h
+++ b/src/libs/3rdparty/cplusplus/cppassert.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SOFT_ASSERT_H
-#define SOFT_ASSERT_H
+#pragma once
 
 #include <iostream>
 
@@ -36,7 +35,3 @@
 
 #define CPP_ASSERT(cond, action) if (cond) {} else { CPP_ASSERT_STRING(#cond); action; } do {} while (0)
 #define CPP_CHECK(cond) if (cond) {} else { CPP_ASSERT_STRING(#cond); } do {} while (0)
-
-#endif // SOFT_ASSERT_H
-
-
diff --git a/src/libs/aggregation/aggregate.h b/src/libs/aggregation/aggregate.h
index 47243846c4..8404e96d30 100644
--- a/src/libs/aggregation/aggregate.h
+++ b/src/libs/aggregation/aggregate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AGGREGATE_H
-#define AGGREGATE_H
+#pragma once
 
 #include "aggregation_global.h"
 
@@ -126,5 +125,3 @@ template <typename T> QList<T *> query_all(QObject *obj)
 }
 
 } // namespace Aggregation
-
-#endif // AGGREGATE_H
diff --git a/src/libs/aggregation/aggregation_global.h b/src/libs/aggregation/aggregation_global.h
index 3b1d7140c6..e91129202a 100644
--- a/src/libs/aggregation/aggregation_global.h
+++ b/src/libs/aggregation/aggregation_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AGGREGATION_GLOBAL_H
-#define AGGREGATION_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define AGGREGATION_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // AGGREGATION_GLOBAL_H
diff --git a/src/libs/aggregation/examples/text/main.h b/src/libs/aggregation/examples/text/main.h
index 53482ea894..76d0ec0191 100644
--- a/src/libs/aggregation/examples/text/main.h
+++ b/src/libs/aggregation/examples/text/main.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MAIN_H
-#define MAIN_H
+#pragma once
 
 #include "myinterfaces.h"
 #include "ui_main.h"
@@ -51,5 +50,3 @@ private:
 
     QList<IComboEntry *> m_entries;
 };
-
-#endif // MAIN_H
diff --git a/src/libs/aggregation/examples/text/myinterfaces.h b/src/libs/aggregation/examples/text/myinterfaces.h
index 696c49bc9d..3dcdc6f0c3 100644
--- a/src/libs/aggregation/examples/text/myinterfaces.h
+++ b/src/libs/aggregation/examples/text/myinterfaces.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MYINTERFACES_H
-#define MYINTERFACES_H
+#pragma once
 
 #include <aggregate.h>
 
@@ -80,5 +79,3 @@ public:
 private:
     QString m_text;
 };
-
-#endif // MYINTERFACES_H
diff --git a/src/libs/clangbackendipc/clangbackendipc_global.h b/src/libs/clangbackendipc/clangbackendipc_global.h
index 12a5804fdc..03b3493d70 100644
--- a/src/libs/clangbackendipc/clangbackendipc_global.h
+++ b/src/libs/clangbackendipc/clangbackendipc_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKENDIPC_GLOBAL_H
-#define CLANGBACKENDIPC_GLOBAL_H
+#pragma once
 
 #include <utils/sizedarray.h>
 
@@ -134,4 +133,3 @@ struct HighlightingTypes {
 };
 
 }
-#endif // CLANGBACKENDIPC_GLOBAL_H
diff --git a/src/libs/clangbackendipc/clangbackendipcdebugutils.h b/src/libs/clangbackendipc/clangbackendipcdebugutils.h
index 3a81b4ea0b..df2ff3194f 100644
--- a/src/libs/clangbackendipc/clangbackendipcdebugutils.h
+++ b/src/libs/clangbackendipc/clangbackendipcdebugutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKENDIPCDEBUGUTILS_H
-#define CLANGBACKENDIPCDEBUGUTILS_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -52,5 +51,3 @@ private:
 } // namespace ClangBackEnd
 
 #define TIME_SCOPE_DURATION(id) ClangBackEnd::VerboseScopeDurationTimer scopeDurationTimer(id)
-
-#endif // CLANGBACKENDIPCDEBUGUTILS_H
diff --git a/src/libs/clangbackendipc/cmbalivemessage.h b/src/libs/clangbackendipc/cmbalivemessage.h
index a28aa986d3..a198f44be3 100644
--- a/src/libs/clangbackendipc/cmbalivemessage.h
+++ b/src/libs/clangbackendipc/cmbalivemessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CMBALIVEMESSAGE_H
-#define CMBALIVEMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -42,5 +41,3 @@ CMBIPC_EXPORT QDebug operator<<(QDebug debug, const AliveMessage &message);
 
 DECLARE_MESSAGE(AliveMessage)
 }
-
-#endif // CMBALIVEMESSAGE_H
diff --git a/src/libs/clangbackendipc/cmbcodecompletedmessage.h b/src/libs/clangbackendipc/cmbcodecompletedmessage.h
index e0e8109222..8fe9c5dbea 100644
--- a/src/libs/clangbackendipc/cmbcodecompletedmessage.h
+++ b/src/libs/clangbackendipc/cmbcodecompletedmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CODECOMPLETEDMESSAGE_H
-#define CLANGBACKEND_CODECOMPLETEDMESSAGE_H
+#pragma once
 
 #include "codecompletion.h"
 
@@ -68,5 +67,3 @@ void PrintTo(const CodeCompletedMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(CodeCompletedMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CODECOMPLETEDMESSAGE_H
diff --git a/src/libs/clangbackendipc/cmbcompletecodemessage.h b/src/libs/clangbackendipc/cmbcompletecodemessage.h
index cd9aec2075..28356259ad 100644
--- a/src/libs/clangbackendipc/cmbcompletecodemessage.h
+++ b/src/libs/clangbackendipc/cmbcompletecodemessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_COMPLETECODEMESSAGE_H
-#define CLANGBACKEND_COMPLETECODEMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -72,6 +71,5 @@ CMBIPC_EXPORT QDebug operator<<(QDebug debug, const CompleteCodeMessage &message
 void PrintTo(const CompleteCodeMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(CompleteCodeMessage);
-} // namespace ClangBackEnd
 
-#endif // CLANGBACKEND_COMPLETECODEMESSAGE_H
+} // namespace ClangBackEnd
diff --git a/src/libs/clangbackendipc/cmbechomessage.h b/src/libs/clangbackendipc/cmbechomessage.h
index b1bc061d55..9cf29b4611 100644
--- a/src/libs/clangbackendipc/cmbechomessage.h
+++ b/src/libs/clangbackendipc/cmbechomessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_ECHOMESSAGE_H
-#define CLANGBACKEND_ECHOMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -55,5 +54,3 @@ void PrintTo(const EchoMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(EchoMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_ECHOMESSAGE_H
diff --git a/src/libs/clangbackendipc/cmbendmessage.h b/src/libs/clangbackendipc/cmbendmessage.h
index 91029d52b4..d5163a7be8 100644
--- a/src/libs/clangbackendipc/cmbendmessage.h
+++ b/src/libs/clangbackendipc/cmbendmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CMBENDMESSAGE_H
-#define CMBENDMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -43,5 +42,3 @@ void PrintTo(const EndMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(EndMessage)
 }
-
-#endif // CMBENDMESSAGE_H
diff --git a/src/libs/clangbackendipc/cmbregisterprojectsforeditormessage.h b/src/libs/clangbackendipc/cmbregisterprojectsforeditormessage.h
index 253167e119..8701b01681 100644
--- a/src/libs/clangbackendipc/cmbregisterprojectsforeditormessage.h
+++ b/src/libs/clangbackendipc/cmbregisterprojectsforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_REGISTERPROJECTSFOREDITORMESSAGE_H
-#define CLANGBACKEND_REGISTERPROJECTSFOREDITORMESSAGE_H
+#pragma once
 
 #include "projectpartcontainer.h"
 
@@ -57,5 +56,3 @@ void PrintTo(const RegisterProjectPartsForEditorMessage &message, ::std::ostream
 
 DECLARE_MESSAGE(RegisterProjectPartsForEditorMessage);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_REGISTERPROJECTSFOREDITORMESSAGE_H
diff --git a/src/libs/clangbackendipc/cmbregistertranslationunitsforeditormessage.h b/src/libs/clangbackendipc/cmbregistertranslationunitsforeditormessage.h
index 5295b130fb..c2956bcd1c 100644
--- a/src/libs/clangbackendipc/cmbregistertranslationunitsforeditormessage.h
+++ b/src/libs/clangbackendipc/cmbregistertranslationunitsforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_REGISTERFILEFOREDITOR_H
-#define CLANGBACKEND_REGISTERFILEFOREDITOR_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -63,5 +62,3 @@ void PrintTo(const RegisterTranslationUnitForEditorMessage &message, ::std::ostr
 
 DECLARE_MESSAGE(RegisterTranslationUnitForEditorMessage);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_REGISTERFILEFORCODECOMPLITION_H
diff --git a/src/libs/clangbackendipc/cmbunregisterprojectsforeditormessage.h b/src/libs/clangbackendipc/cmbunregisterprojectsforeditormessage.h
index 142c914f8e..60ee689649 100644
--- a/src/libs/clangbackendipc/cmbunregisterprojectsforeditormessage.h
+++ b/src/libs/clangbackendipc/cmbunregisterprojectsforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_UNREGISTERPROJECTSFOREDITOR_H
-#define CLANGBACKEND_UNREGISTERPROJECTSFOREDITOR_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -58,5 +57,3 @@ void PrintTo(const UnregisterProjectPartsForEditorMessage &message, ::std::ostre
 
 DECLARE_MESSAGE(UnregisterProjectPartsForEditorMessage);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_UNREGISTERPROJECTSFOREDITOR_H
diff --git a/src/libs/clangbackendipc/cmbunregistertranslationunitsforeditormessage.h b/src/libs/clangbackendipc/cmbunregistertranslationunitsforeditormessage.h
index a40bc33e74..c4bc778a6b 100644
--- a/src/libs/clangbackendipc/cmbunregistertranslationunitsforeditormessage.h
+++ b/src/libs/clangbackendipc/cmbunregistertranslationunitsforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_UNRegisterTranslationUnitForEditorMessage_H
-#define CLANGBACKEND_UNRegisterTranslationUnitForEditorMessage_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -62,5 +61,3 @@ void PrintTo(const UnregisterTranslationUnitsForEditorMessage &message, ::std::o
 
 DECLARE_MESSAGE(UnregisterTranslationUnitsForEditorMessage);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_UNRegisterTranslationUnitForEditorMessage_H
diff --git a/src/libs/clangbackendipc/codecompletion.h b/src/libs/clangbackendipc/codecompletion.h
index 83d4babbb8..ec8984a89a 100644
--- a/src/libs/clangbackendipc/codecompletion.h
+++ b/src/libs/clangbackendipc/codecompletion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CODECOMPLETION_H
-#define CLANGBACKEND_CODECOMPLETION_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 #include "codecompletionchunk.h"
@@ -129,5 +128,3 @@ void PrintTo(const CodeCompletion &message, ::std::ostream* os);
 void PrintTo(CodeCompletion::Kind kind, ::std::ostream *os);
 void PrintTo(CodeCompletion::Availability availability, ::std::ostream *os);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CODECOMPLETION_H
diff --git a/src/libs/clangbackendipc/codecompletionchunk.h b/src/libs/clangbackendipc/codecompletionchunk.h
index 74480c70e2..897e9f222a 100644
--- a/src/libs/clangbackendipc/codecompletionchunk.h
+++ b/src/libs/clangbackendipc/codecompletionchunk.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CODECOMPLETIONCHUNK_H
-#define CLANGBACKEND_CODECOMPLETIONCHUNK_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -99,5 +98,3 @@ void PrintTo(const CodeCompletionChunk::Kind &kind, ::std::ostream* os);
 } // namespace ClangBackEnd
 
 Q_DECLARE_METATYPE(ClangBackEnd::CodeCompletionChunk)
-
-#endif // CLANGBACKEND_CODECOMPLETIONCHUNK_H
diff --git a/src/libs/clangbackendipc/connectionclient.h b/src/libs/clangbackendipc/connectionclient.h
index 001cbd2d3a..628a543019 100644
--- a/src/libs/clangbackendipc/connectionclient.h
+++ b/src/libs/clangbackendipc/connectionclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CONNECTIONCLIENT_H
-#define CLANGBACKEND_CONNECTIONCLIENT_H
+#pragma once
 
 #include "ipcserverproxy.h"
 #include "lineprefixer.h"
@@ -111,5 +110,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CONNECTIONCLIENT_H
diff --git a/src/libs/clangbackendipc/connectionserver.h b/src/libs/clangbackendipc/connectionserver.h
index ed0b7388c9..6eedf1b231 100644
--- a/src/libs/clangbackendipc/connectionserver.h
+++ b/src/libs/clangbackendipc/connectionserver.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CONNECTIONSERVER_H
-#define CLANGBACKEND_CONNECTIONSERVER_H
+#pragma once
 
 #include <ipcclientproxy.h>
 
@@ -76,5 +75,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CONNECTIONSERVER_H
diff --git a/src/libs/clangbackendipc/diagnosticcontainer.h b/src/libs/clangbackendipc/diagnosticcontainer.h
index d71bd4b87e..b1192f393b 100644
--- a/src/libs/clangbackendipc/diagnosticcontainer.h
+++ b/src/libs/clangbackendipc/diagnosticcontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_DIAGNOSTICCONTAINER_H
-#define CLANGBACKEND_DIAGNOSTICCONTAINER_H
+#pragma once
 
 #include "sourcerangecontainer.h"
 #include "fixitcontainer.h"
@@ -85,5 +84,3 @@ CMBIPC_EXPORT QDebug operator<<(QDebug debug, const DiagnosticContainer &contain
 void PrintTo(const DiagnosticContainer &container, ::std::ostream* os);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_DIAGNOSTICCONTAINER_H
diff --git a/src/libs/clangbackendipc/diagnosticschangedmessage.h b/src/libs/clangbackendipc/diagnosticschangedmessage.h
index 8654b3c32d..fe9a1e61c3 100644
--- a/src/libs/clangbackendipc/diagnosticschangedmessage.h
+++ b/src/libs/clangbackendipc/diagnosticschangedmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_DIAGNOSTICSCHANGEDMESSAGE_H
-#define CLANGBACKEND_DIAGNOSTICSCHANGEDMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 #include "diagnosticcontainer.h"
@@ -64,5 +63,3 @@ void PrintTo(const DiagnosticsChangedMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(DiagnosticsChangedMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_DIAGNOSTICSCHANGEDMESSAGE_H
diff --git a/src/libs/clangbackendipc/filecontainer.h b/src/libs/clangbackendipc/filecontainer.h
index 205b0803d6..ab1a0ac3f4 100644
--- a/src/libs/clangbackendipc/filecontainer.h
+++ b/src/libs/clangbackendipc/filecontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_FILECONTAINER_H
-#define CLANGBACKEND_FILECONTAINER_H
+#pragma once
 
 #include <clangbackendipc_global.h>
 
@@ -74,5 +73,3 @@ CMBIPC_EXPORT QDebug operator<<(QDebug debug, const FileContainer &container);
 void PrintTo(const FileContainer &container, ::std::ostream* os);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_FILECONTAINER_H
diff --git a/src/libs/clangbackendipc/fixitcontainer.h b/src/libs/clangbackendipc/fixitcontainer.h
index 7e4d89890e..e67daa034e 100644
--- a/src/libs/clangbackendipc/fixitcontainer.h
+++ b/src/libs/clangbackendipc/fixitcontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_FIXITCONTAINER_H
-#define CLANGBACKEND_FIXITCONTAINER_H
+#pragma once
 
 #include "sourcerangecontainer.h"
 
@@ -58,5 +57,3 @@ void PrintTo(const FixItContainer &container, ::std::ostream* os);
 } // namespace ClangBackEnd
 
 Q_DECLARE_METATYPE(ClangBackEnd::FixItContainer)
-
-#endif // CLANGBACKEND_FIXITCONTAINER_H
diff --git a/src/libs/clangbackendipc/highlightingchangedmessage.h b/src/libs/clangbackendipc/highlightingchangedmessage.h
index b4ae93b001..b9909daa4f 100644
--- a/src/libs/clangbackendipc/highlightingchangedmessage.h
+++ b/src/libs/clangbackendipc/highlightingchangedmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_HIGHLIGHTINGCHANGEDMESSAGE_H
-#define CLANGBACKEND_HIGHLIGHTINGCHANGEDMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 #include "filecontainer.h"
@@ -68,5 +67,3 @@ void PrintTo(const HighlightingChangedMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(HighlightingChangedMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_HIGHLIGHTINGCHANGEDMESSAGE_H
diff --git a/src/libs/clangbackendipc/ipcclientdispatcher.h b/src/libs/clangbackendipc/ipcclientdispatcher.h
index 74b32c3019..dd6f683534 100644
--- a/src/libs/clangbackendipc/ipcclientdispatcher.h
+++ b/src/libs/clangbackendipc/ipcclientdispatcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_IPCCLIENTDISPATCHER_H
-#define CLANGBACKEND_IPCCLIENTDISPATCHER_H
+#pragma once
 
 #include "ipcclientinterface.h"
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_IPCCLIENTDISPATCHER_H
diff --git a/src/libs/clangbackendipc/ipcclientinterface.h b/src/libs/clangbackendipc/ipcclientinterface.h
index def01ac5e1..3c4ac6eb82 100644
--- a/src/libs/clangbackendipc/ipcclientinterface.h
+++ b/src/libs/clangbackendipc/ipcclientinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_IPCCLIENTINTERFACE_H
-#define CLANGBACKEND_IPCCLIENTINTERFACE_H
+#pragma once
 
 #include "ipcinterface.h"
 
@@ -64,5 +63,3 @@ public:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_IPCCLIENTINTERFACE_H
diff --git a/src/libs/clangbackendipc/ipcclientproxy.h b/src/libs/clangbackendipc/ipcclientproxy.h
index ffac833e7b..3142ae1913 100644
--- a/src/libs/clangbackendipc/ipcclientproxy.h
+++ b/src/libs/clangbackendipc/ipcclientproxy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODELMODELBACKEND_IPCCLIENTPROXY_H
-#define CODELMODELBACKEND_IPCCLIENTPROXY_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 #include "ipcclientinterface.h"
@@ -72,5 +71,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CODELMODELBACKEND_IPCCLIENTPROXY_H
diff --git a/src/libs/clangbackendipc/ipcinterface.h b/src/libs/clangbackendipc/ipcinterface.h
index f868d6db3a..f58a7e2a5c 100644
--- a/src/libs/clangbackendipc/ipcinterface.h
+++ b/src/libs/clangbackendipc/ipcinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_IPCINTERFACE_H
-#define CLANGBACKEND_IPCINTERFACE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -42,5 +41,3 @@ public:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_IPCINTERFACE_H
diff --git a/src/libs/clangbackendipc/ipcserverinterface.h b/src/libs/clangbackendipc/ipcserverinterface.h
index dd9886d58c..5d702fbc72 100644
--- a/src/libs/clangbackendipc/ipcserverinterface.h
+++ b/src/libs/clangbackendipc/ipcserverinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_IPCSERVERINTERFACE_H
-#define CLANGBACKEND_IPCSERVERINTERFACE_H
+#pragma once
 
 #include "ipcinterface.h"
 
@@ -62,5 +61,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_IPCSERVERINTERFACE_H
diff --git a/src/libs/clangbackendipc/ipcserverproxy.h b/src/libs/clangbackendipc/ipcserverproxy.h
index 5cecabeef3..c36db5d14c 100644
--- a/src/libs/clangbackendipc/ipcserverproxy.h
+++ b/src/libs/clangbackendipc/ipcserverproxy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_IPCSERVERPROXY_H
-#define CLANGBACKEND_IPCSERVERPROXY_H
+#pragma once
 #include "ipcserverinterface.h"
 #include "readmessageblock.h"
 #include "writemessageblock.h"
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_IPCSERVERPROXY_H
diff --git a/src/libs/clangbackendipc/lineprefixer.h b/src/libs/clangbackendipc/lineprefixer.h
index 99b1be3125..b2607720fe 100644
--- a/src/libs/clangbackendipc/lineprefixer.h
+++ b/src/libs/clangbackendipc/lineprefixer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PRINTLINESWITHPREFIX_H
-#define PRINTLINESWITHPREFIX_H
+#pragma once
 
 #include <QString>
 #include <QTextStream>
@@ -45,5 +44,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // PRINTLINESWITHPREFIX_H
diff --git a/src/libs/clangbackendipc/messageenvelop.h b/src/libs/clangbackendipc/messageenvelop.h
index 93dd2a0f24..008a4c0037 100644
--- a/src/libs/clangbackendipc/messageenvelop.h
+++ b/src/libs/clangbackendipc/messageenvelop.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_MESSAGEENVELOP_H
-#define CLANGBACKEND_MESSAGEENVELOP_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -108,5 +107,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_MESSAGEENVELOP_H
diff --git a/src/libs/clangbackendipc/projectpartcontainer.h b/src/libs/clangbackendipc/projectpartcontainer.h
index 75a6b5142a..8439949293 100644
--- a/src/libs/clangbackendipc/projectpartcontainer.h
+++ b/src/libs/clangbackendipc/projectpartcontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_PROJECTCONTAINER_H
-#define CLANGBACKEND_PROJECTCONTAINER_H
+#pragma once
 
 #include <clangbackendipc_global.h>
 
@@ -58,5 +57,3 @@ QDebug operator<<(QDebug debug, const ProjectPartContainer &container);
 void PrintTo(const ProjectPartContainer &container, ::std::ostream* os);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_PROJECTCONTAINER_H
diff --git a/src/libs/clangbackendipc/projectpartsdonotexistmessage.h b/src/libs/clangbackendipc/projectpartsdonotexistmessage.h
index f79e658ff5..e896675ee5 100644
--- a/src/libs/clangbackendipc/projectpartsdonotexistmessage.h
+++ b/src/libs/clangbackendipc/projectpartsdonotexistmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_PROJECTPARTSDONOTEXISTMESSAGE_H
-#define CLANGBACKEND_PROJECTPARTSDONOTEXISTMESSAGE_H
+#pragma once
 
 #include "clangbackendipc_global.h"
 
@@ -58,5 +57,3 @@ void PrintTo(const ProjectPartsDoNotExistMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(ProjectPartsDoNotExistMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_PROJECTPARTSDONOTEXISTMESSAGE_H
diff --git a/src/libs/clangbackendipc/readmessageblock.h b/src/libs/clangbackendipc/readmessageblock.h
index 1b5ddf2fb5..0dfd5d21d7 100644
--- a/src/libs/clangbackendipc/readmessageblock.h
+++ b/src/libs/clangbackendipc/readmessageblock.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_READMESSAGEBLOCK_H
-#define CLANGBACKEND_READMESSAGEBLOCK_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_READMESSAGEBLOCK_H
diff --git a/src/libs/clangbackendipc/registerunsavedfilesforeditormessage.h b/src/libs/clangbackendipc/registerunsavedfilesforeditormessage.h
index f5ff373004..0fd28da182 100644
--- a/src/libs/clangbackendipc/registerunsavedfilesforeditormessage.h
+++ b/src/libs/clangbackendipc/registerunsavedfilesforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_REGISTERUNSAVEDFILESFOREDITORMESSAGE_H
-#define CLANGBACKEND_REGISTERUNSAVEDFILESFOREDITORMESSAGE_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -57,5 +56,3 @@ void PrintTo(const RegisterUnsavedFilesForEditorMessage &message, ::std::ostream
 
 DECLARE_MESSAGE(RegisterUnsavedFilesForEditorMessage);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_REGISTERUNSAVEDFILESFOREDITORMESSAGE_H
diff --git a/src/libs/clangbackendipc/requestdiagnosticsmessage.h b/src/libs/clangbackendipc/requestdiagnosticsmessage.h
index 3f5fceebb6..a92cabf205 100644
--- a/src/libs/clangbackendipc/requestdiagnosticsmessage.h
+++ b/src/libs/clangbackendipc/requestdiagnosticsmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_REQUESTDIAGNOSTICSMESSAGE_H
-#define CLANGBACKEND_REQUESTDIAGNOSTICSMESSAGE_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -57,5 +56,3 @@ void PrintTo(const RequestDiagnosticsMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(RequestDiagnosticsMessage);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_REQUESTDIAGNOSTICSMESSAGE_H
diff --git a/src/libs/clangbackendipc/requesthighlightingmessage.h b/src/libs/clangbackendipc/requesthighlightingmessage.h
index f135f35bb8..9b5e0cb4ed 100644
--- a/src/libs/clangbackendipc/requesthighlightingmessage.h
+++ b/src/libs/clangbackendipc/requesthighlightingmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef  CLANGBACKEND_REQUESTHIGHLIGHTING_H
-#define  CLANGBACKEND_REQUESTHIGHLIGHTING_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -57,5 +56,3 @@ void PrintTo(const RequestHighlightingMessage &message, ::std::ostream* os);
 
 DECLARE_MESSAGE(RequestHighlightingMessage)
 } // namespace ClangBackEnd
-
-#endif //  CLANGBACKEND_REQUESTHIGHLIGHTING_H
diff --git a/src/libs/clangbackendipc/sourcelocationcontainer.h b/src/libs/clangbackendipc/sourcelocationcontainer.h
index 954c675384..e670cd3299 100644
--- a/src/libs/clangbackendipc/sourcelocationcontainer.h
+++ b/src/libs/clangbackendipc/sourcelocationcontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_SOURCELOCATIONCONTAINER_H
-#define CLANGBACKEND_SOURCELOCATIONCONTAINER_H
+#pragma once
 
 #include <clangbackendipc_global.h>
 
@@ -63,5 +62,3 @@ CMBIPC_EXPORT QDebug operator<<(QDebug debug, const SourceLocationContainer &con
 void PrintTo(const SourceLocationContainer &container, ::std::ostream* os);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_SOURCELOCATIONCONTAINER_H
diff --git a/src/libs/clangbackendipc/sourcerangecontainer.h b/src/libs/clangbackendipc/sourcerangecontainer.h
index 63dccbd2ad..b8198effd1 100644
--- a/src/libs/clangbackendipc/sourcerangecontainer.h
+++ b/src/libs/clangbackendipc/sourcerangecontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_SOURCERANGECONTAINER_H
-#define CLANGBACKEND_SOURCERANGECONTAINER_H
+#pragma once
 
 #include "sourcelocationcontainer.h"
 
@@ -57,5 +56,3 @@ CMBIPC_EXPORT QDebug operator<<(QDebug debug, const SourceRangeContainer &contai
 void PrintTo(const SourceRangeContainer &container, ::std::ostream* os);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_SOURCERANGECONTAINER_H
diff --git a/src/libs/clangbackendipc/translationunitdoesnotexistmessage.h b/src/libs/clangbackendipc/translationunitdoesnotexistmessage.h
index 08f2a54fc1..e4b7a547ab 100644
--- a/src/libs/clangbackendipc/translationunitdoesnotexistmessage.h
+++ b/src/libs/clangbackendipc/translationunitdoesnotexistmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITDOESNOTEXISTSMESSAGE_H
-#define CLANGBACKEND_TRANSLATIONUNITDOESNOTEXISTSMESSAGE_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -59,5 +58,3 @@ void PrintTo(const TranslationUnitDoesNotExistMessage &message, ::std::ostream*
 
 DECLARE_MESSAGE(TranslationUnitDoesNotExistMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITDOESNOTEXISTSMESSAGE_H
diff --git a/src/libs/clangbackendipc/unregisterunsavedfilesforeditormessage.h b/src/libs/clangbackendipc/unregisterunsavedfilesforeditormessage.h
index a993c0a97d..4704e7e5b7 100644
--- a/src/libs/clangbackendipc/unregisterunsavedfilesforeditormessage.h
+++ b/src/libs/clangbackendipc/unregisterunsavedfilesforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_UNREGISTERTRANSLATIONUNITSFOREDITORMESSAGE_H
-#define CLANGBACKEND_UNREGISTERTRANSLATIONUNITSFOREDITORMESSAGE_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -57,5 +56,3 @@ void PrintTo(const UnregisterUnsavedFilesForEditorMessage &message, ::std::ostre
 
 DECLARE_MESSAGE(UnregisterUnsavedFilesForEditorMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_UNREGISTERTRANSLATIONUNITSFOREDITORMESSAGE_H
diff --git a/src/libs/clangbackendipc/updatetranslationunitsforeditormessage.h b/src/libs/clangbackendipc/updatetranslationunitsforeditormessage.h
index ea99fe43a2..dcd5701013 100644
--- a/src/libs/clangbackendipc/updatetranslationunitsforeditormessage.h
+++ b/src/libs/clangbackendipc/updatetranslationunitsforeditormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_UPDATEFILEFOREDITOR_H
-#define CLANGBACKEND_UPDATEFILEFOREDITOR_H
+#pragma once
 
 #include "filecontainer.h"
 
@@ -57,5 +56,3 @@ void PrintTo(const UpdateTranslationUnitsForEditorMessage &message, ::std::ostre
 
 DECLARE_MESSAGE(UpdateTranslationUnitsForEditorMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_UPDATEFILEFOREDITOR_H
diff --git a/src/libs/clangbackendipc/updatevisibletranslationunitsmessage.h b/src/libs/clangbackendipc/updatevisibletranslationunitsmessage.h
index f43b905ec2..241455f310 100644
--- a/src/libs/clangbackendipc/updatevisibletranslationunitsmessage.h
+++ b/src/libs/clangbackendipc/updatevisibletranslationunitsmessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_UPDATEVISIBLETRANSLATIONUNITSMESSAGE_H
-#define CLANGBACKEND_UPDATEVISIBLETRANSLATIONUNITSMESSAGE_H
+#pragma once
 
 #include <clangbackendipc_global.h>
 
@@ -59,5 +58,3 @@ void PrintTo(const UpdateVisibleTranslationUnitsMessage &message, ::std::ostream
 
 DECLARE_MESSAGE(UpdateVisibleTranslationUnitsMessage)
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_UPDATEVISIBLETRANSLATIONUNITSMESSAGE_H
diff --git a/src/libs/clangbackendipc/writemessageblock.h b/src/libs/clangbackendipc/writemessageblock.h
index 4b611a2475..0fa8d03dd3 100644
--- a/src/libs/clangbackendipc/writemessageblock.h
+++ b/src/libs/clangbackendipc/writemessageblock.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_WRITEMESSAGEBLOCK_H
-#define CLANGBACKEND_WRITEMESSAGEBLOCK_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_WRITEMESSAGEBLOCK_H
diff --git a/src/libs/cplusplus/ASTParent.h b/src/libs/cplusplus/ASTParent.h
index b208476818..8369265bc2 100644
--- a/src/libs/cplusplus/ASTParent.h
+++ b/src/libs/cplusplus/ASTParent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_ASTPARENT_H
-#define CPLUSPLUS_ASTPARENT_H
+#pragma once
 
 #include <cplusplus/ASTVisitor.h>
 
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_ASTPARENT_H
diff --git a/src/libs/cplusplus/ASTPath.h b/src/libs/cplusplus/ASTPath.h
index 8a34acbe58..e7dfab7fad 100644
--- a/src/libs/cplusplus/ASTPath.h
+++ b/src/libs/cplusplus/ASTPath.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_ASTPATH_H
-#define CPLUSPLUS_ASTPATH_H
+#pragma once
 
 #include <cplusplus/ASTfwd.h>
 #include <cplusplus/ASTVisitor.h>
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPLUSPLUS_ASTPATH_H
diff --git a/src/libs/cplusplus/AlreadyConsideredClassContainer.h b/src/libs/cplusplus/AlreadyConsideredClassContainer.h
index 01c5588c17..fd35291c2a 100644
--- a/src/libs/cplusplus/AlreadyConsideredClassContainer.h
+++ b/src/libs/cplusplus/AlreadyConsideredClassContainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_ALREADYCONSIDEREDCLASSCONTAINER_H
-#define CPLUSPLUS_ALREADYCONSIDEREDCLASSCONTAINER_H
+#pragma once
 
 #include <cplusplus/SafeMatcher.h>
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_ALREADYCONSIDEREDCLASSCONTAINER_H
diff --git a/src/libs/cplusplus/BackwardsScanner.h b/src/libs/cplusplus/BackwardsScanner.h
index 039993ae23..2ac7a17a36 100644
--- a/src/libs/cplusplus/BackwardsScanner.h
+++ b/src/libs/cplusplus/BackwardsScanner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_BACKWARDSSCANNER_H
-#define CPLUSPLUS_BACKWARDSSCANNER_H
+#pragma once
 
 #include "SimpleLexer.h"
 
@@ -85,5 +84,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_BACKWARDSSCANNER_H
diff --git a/src/libs/cplusplus/CppDocument.h b/src/libs/cplusplus/CppDocument.h
index 42a5275476..bac2fb2a47 100644
--- a/src/libs/cplusplus/CppDocument.h
+++ b/src/libs/cplusplus/CppDocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_CPPDOCUMENT_H
-#define CPLUSPLUS_CPPDOCUMENT_H
+#pragma once
 
 #include "Macro.h"
 
@@ -457,5 +456,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_CPPDOCUMENT_H
diff --git a/src/libs/cplusplus/CppRewriter.h b/src/libs/cplusplus/CppRewriter.h
index b507182b9a..66ff57344a 100644
--- a/src/libs/cplusplus/CppRewriter.h
+++ b/src/libs/cplusplus/CppRewriter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPREWRITER_H
-#define CPPREWRITER_H
+#pragma once
 
 #include "CppDocument.h"
 #include "LookupContext.h"
@@ -110,5 +109,3 @@ CPLUSPLUS_EXPORT const Name *rewriteName(const Name *name,
                                          Control *control);
 
 } // namespace CPlusPlus
-
-#endif // CPPREWRITER_H
diff --git a/src/libs/cplusplus/DependencyTable.h b/src/libs/cplusplus/DependencyTable.h
index b152f00f44..508ae297c5 100644
--- a/src/libs/cplusplus/DependencyTable.h
+++ b/src/libs/cplusplus/DependencyTable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_DEPENDENCYTABLE_H
-#define CPLUSPLUS_DEPENDENCYTABLE_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_DEPENDENCYTABLE_H
diff --git a/src/libs/cplusplus/DeprecatedGenTemplateInstance.h b/src/libs/cplusplus/DeprecatedGenTemplateInstance.h
index 37453c9d40..d612706a17 100644
--- a/src/libs/cplusplus/DeprecatedGenTemplateInstance.h
+++ b/src/libs/cplusplus/DeprecatedGenTemplateInstance.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_DEPRECATEDGENTEMPLATEINSTANCE_H
-#define CPLUSPLUS_DEPRECATEDGENTEMPLATEINSTANCE_H
+#pragma once
 
 #include <cplusplus/TypeVisitor.h>
 #include <cplusplus/NameVisitor.h>
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_DEPRECATEDGENTEMPLATEINSTANCE_H
diff --git a/src/libs/cplusplus/ExpressionUnderCursor.h b/src/libs/cplusplus/ExpressionUnderCursor.h
index 79c0ed052d..230e196777 100644
--- a/src/libs/cplusplus/ExpressionUnderCursor.h
+++ b/src/libs/cplusplus/ExpressionUnderCursor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_EXPRESSIONUNDERCURSOR_H
-#define CPLUSPLUS_EXPRESSIONUNDERCURSOR_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 #include <cplusplus/Token.h>
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_EXPRESSIONUNDERCURSOR_H
diff --git a/src/libs/cplusplus/FastPreprocessor.h b/src/libs/cplusplus/FastPreprocessor.h
index 04d7320115..da63bdd59b 100644
--- a/src/libs/cplusplus/FastPreprocessor.h
+++ b/src/libs/cplusplus/FastPreprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_FASTPREPROCESSOR_H
-#define CPLUSPLUS_FASTPREPROCESSOR_H
+#pragma once
 
 #include "PreprocessorClient.h"
 #include "CppDocument.h"
@@ -79,5 +78,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_FASTPREPROCESSOR_H
diff --git a/src/libs/cplusplus/FindUsages.h b/src/libs/cplusplus/FindUsages.h
index 38d109062f..3d1e7a942e 100644
--- a/src/libs/cplusplus/FindUsages.h
+++ b/src/libs/cplusplus/FindUsages.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_FINDUSAGES_H
-#define CPLUSPLUS_FINDUSAGES_H
+#pragma once
 
 #include "LookupContext.h"
 #include "CppDocument.h"
@@ -304,6 +303,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_FINDUSAGES_H
-
diff --git a/src/libs/cplusplus/Icons.h b/src/libs/cplusplus/Icons.h
index 35b62fb59d..51c550aae7 100644
--- a/src/libs/cplusplus/Icons.h
+++ b/src/libs/cplusplus/Icons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_ICONS_H
-#define CPLUSPLUS_ICONS_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 
@@ -101,5 +100,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_ICONS_H
diff --git a/src/libs/cplusplus/LookupContext.h b/src/libs/cplusplus/LookupContext.h
index 398571aea8..7273fe57d0 100644
--- a/src/libs/cplusplus/LookupContext.h
+++ b/src/libs/cplusplus/LookupContext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_LOOKUPCONTEXT_H
-#define CPLUSPLUS_LOOKUPCONTEXT_H
+#pragma once
 
 #include "CppDocument.h"
 #include "LookupItem.h"
@@ -349,5 +348,3 @@ bool CPLUSPLUS_EXPORT compareFullyQualifiedName(const QList<const Name *> &path,
 
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_LOOKUPCONTEXT_H
diff --git a/src/libs/cplusplus/LookupItem.h b/src/libs/cplusplus/LookupItem.h
index f61c50fa77..1007635f6a 100644
--- a/src/libs/cplusplus/LookupItem.h
+++ b/src/libs/cplusplus/LookupItem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_LOOKUPITEM_H
-#define CPLUSPLUS_LOOKUPITEM_H
+#pragma once
 
 #include <cplusplus/FullySpecifiedType.h>
 
@@ -80,5 +79,3 @@ uint qHash(const CPlusPlus::LookupItem &result);
 //it also a workaround for some compilers
 inline uint qHash(const CPlusPlus::LookupItem &item) { return CPlusPlus::qHash(item); }
 #endif
-
-#endif // CPLUSPLUS_LOOKUPITEM_H
diff --git a/src/libs/cplusplus/Macro.h b/src/libs/cplusplus/Macro.h
index a441578ffe..f54df57458 100644
--- a/src/libs/cplusplus/Macro.h
+++ b/src/libs/cplusplus/Macro.h
@@ -43,8 +43,7 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef CPLUSPLUS_PP_MACRO_H
-#define CPLUSPLUS_PP_MACRO_H
+#pragma once
 
 #include "PPToken.h"
 
@@ -179,5 +178,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_PP_MACRO_H
diff --git a/src/libs/cplusplus/MatchingText.h b/src/libs/cplusplus/MatchingText.h
index dfe111a337..f2d27c4ea8 100644
--- a/src/libs/cplusplus/MatchingText.h
+++ b/src/libs/cplusplus/MatchingText.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_MATCHINGTEXT_H
-#define CPLUSPLUS_MATCHINGTEXT_H
+#pragma once
 
 #include <QtGlobal>
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // MATCHINGTEXT_H
diff --git a/src/libs/cplusplus/NamePrettyPrinter.h b/src/libs/cplusplus/NamePrettyPrinter.h
index 1f7816a133..13d378b25e 100644
--- a/src/libs/cplusplus/NamePrettyPrinter.h
+++ b/src/libs/cplusplus/NamePrettyPrinter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_NAMEPRETTYPRINTER_H
-#define CPLUSPLUS_NAMEPRETTYPRINTER_H
+#pragma once
 
 #include <cplusplus/NameVisitor.h>
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_NAMEPRETTYPRINTER_H
diff --git a/src/libs/cplusplus/Overview.h b/src/libs/cplusplus/Overview.h
index b3fc0d0477..612ea79662 100644
--- a/src/libs/cplusplus/Overview.h
+++ b/src/libs/cplusplus/Overview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_OVERVIEW_H
-#define CPLUSPLUS_OVERVIEW_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 
@@ -76,5 +75,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_OVERVIEW_H
diff --git a/src/libs/cplusplus/OverviewModel.h b/src/libs/cplusplus/OverviewModel.h
index a8e3a01c0b..bd558b8244 100644
--- a/src/libs/cplusplus/OverviewModel.h
+++ b/src/libs/cplusplus/OverviewModel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_OVERVIEWMODEL_H
-#define CPLUSPLUS_OVERVIEWMODEL_H
+#pragma once
 
 #include "CppDocument.h"
 #include "Overview.h"
@@ -77,5 +76,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_OVERVIEWMODEL_H
diff --git a/src/libs/cplusplus/PPToken.h b/src/libs/cplusplus/PPToken.h
index 7fff4f2bfc..8eb8b26ab6 100644
--- a/src/libs/cplusplus/PPToken.h
+++ b/src/libs/cplusplus/PPToken.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_INTERNAL_PPTOKEN_H
-#define CPLUSPLUS_INTERNAL_PPTOKEN_H
+#pragma once
 
 #include <cplusplus/CPlusPlus.h>
 #include <cplusplus/Token.h>
@@ -136,5 +135,3 @@ private:
 
 } // namespace Internal
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_INTERNAL_PPTOKEN_H
diff --git a/src/libs/cplusplus/PreprocessorClient.h b/src/libs/cplusplus/PreprocessorClient.h
index d9877a2199..accccdab1f 100644
--- a/src/libs/cplusplus/PreprocessorClient.h
+++ b/src/libs/cplusplus/PreprocessorClient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PREPROCESSORCLIENT_H
-#define PREPROCESSORCLIENT_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 
@@ -118,5 +117,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // PREPROCESSORCLIENT_H
diff --git a/src/libs/cplusplus/PreprocessorEnvironment.h b/src/libs/cplusplus/PreprocessorEnvironment.h
index fe0a643606..a6db2d0c7f 100644
--- a/src/libs/cplusplus/PreprocessorEnvironment.h
+++ b/src/libs/cplusplus/PreprocessorEnvironment.h
@@ -43,8 +43,7 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef PREPROCESSORENVIRONMENT_H
-#define PREPROCESSORENVIRONMENT_H
+#pragma once
 
 #include "PPToken.h"
 
@@ -101,5 +100,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // PREPROCESSORENVIRONMENT_H
diff --git a/src/libs/cplusplus/ResolveExpression.h b/src/libs/cplusplus/ResolveExpression.h
index d9043e720f..f53caf26aa 100644
--- a/src/libs/cplusplus/ResolveExpression.h
+++ b/src/libs/cplusplus/ResolveExpression.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_RESOLVEEXPRESSION_H
-#define CPLUSPLUS_RESOLVEEXPRESSION_H
+#pragma once
 
 #include "LookupContext.h"
 
@@ -134,5 +133,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_RESOLVEEXPRESSION_H
diff --git a/src/libs/cplusplus/SimpleLexer.h b/src/libs/cplusplus/SimpleLexer.h
index 1bb9a3d08d..2bd794933d 100644
--- a/src/libs/cplusplus/SimpleLexer.h
+++ b/src/libs/cplusplus/SimpleLexer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_SIMPLELEXER_H
-#define CPLUSPLUS_SIMPLELEXER_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 #include <cplusplus/Token.h>
@@ -77,5 +76,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_SIMPLELEXER_H
diff --git a/src/libs/cplusplus/SnapshotSymbolVisitor.h b/src/libs/cplusplus/SnapshotSymbolVisitor.h
index 2fb78e352a..c0eab1bbbb 100644
--- a/src/libs/cplusplus/SnapshotSymbolVisitor.h
+++ b/src/libs/cplusplus/SnapshotSymbolVisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_SNAPSHOTSYMBOLVISITOR_H
-#define CPLUSPLUS_SNAPSHOTSYMBOLVISITOR_H
+#pragma once
 
 #include "CppDocument.h"
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_SNAPSHOTSYMBOLVISITOR_H
diff --git a/src/libs/cplusplus/SymbolNameVisitor.h b/src/libs/cplusplus/SymbolNameVisitor.h
index 5123c717d1..0d48265db7 100644
--- a/src/libs/cplusplus/SymbolNameVisitor.h
+++ b/src/libs/cplusplus/SymbolNameVisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_SYMBOLNAMEVISITOR_H
-#define CPLUSPLUS_SYMBOLNAMEVISITOR_H
+#pragma once
 
 #include <cplusplus/NameVisitor.h>
 
@@ -44,5 +43,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_SYMBOLNAMEVISITOR_H
diff --git a/src/libs/cplusplus/TypeOfExpression.h b/src/libs/cplusplus/TypeOfExpression.h
index b200d78ead..1d13059b8c 100644
--- a/src/libs/cplusplus/TypeOfExpression.h
+++ b/src/libs/cplusplus/TypeOfExpression.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_TYPEOFEXPRESSION_H
-#define CPLUSPLUS_TYPEOFEXPRESSION_H
+#pragma once
 
 #include "CppDocument.h"
 #include "LookupContext.h"
@@ -159,5 +158,3 @@ ExpressionAST CPLUSPLUS_EXPORT *extractExpressionAST(Document::Ptr doc);
 Document::Ptr CPLUSPLUS_EXPORT documentForExpression(const QByteArray &utf8code);
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_TYPEOFEXPRESSION_H
diff --git a/src/libs/cplusplus/TypePrettyPrinter.h b/src/libs/cplusplus/TypePrettyPrinter.h
index eef06b1503..15498784c3 100644
--- a/src/libs/cplusplus/TypePrettyPrinter.h
+++ b/src/libs/cplusplus/TypePrettyPrinter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUS_TYPEPRETTYPRINTER_H
-#define CPLUSPLUS_TYPEPRETTYPRINTER_H
+#pragma once
 
 #include <cplusplus/TypeVisitor.h>
 #include <cplusplus/FullySpecifiedType.h>
@@ -93,5 +92,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_TYPEPRETTYPRINTER_H
diff --git a/src/libs/cplusplus/cppmodelmanagerbase.h b/src/libs/cplusplus/cppmodelmanagerbase.h
index 3086d50cfd..680e7e2d06 100644
--- a/src/libs/cplusplus/cppmodelmanagerbase.h
+++ b/src/libs/cplusplus/cppmodelmanagerbase.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPMODELMANAGERBASE_H
-#define CPPMODELMANAGERBASE_H
+#pragma once
 
 #include <cplusplus/CppDocument.h>
 
@@ -54,5 +53,3 @@ public:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPPMODELMANAGERBASE_H
diff --git a/src/libs/cplusplus/findcdbbreakpoint.h b/src/libs/cplusplus/findcdbbreakpoint.h
index 57bf0f3dfc..6fb61030e7 100644
--- a/src/libs/cplusplus/findcdbbreakpoint.h
+++ b/src/libs/cplusplus/findcdbbreakpoint.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDCDBBREAKPOINT_H
-#define FINDCDBBREAKPOINT_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 #include <cplusplus/ASTVisitor.h>
@@ -93,5 +92,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // FINDCDBBREAKPOINT_H
diff --git a/src/libs/cplusplus/pp-cctype.h b/src/libs/cplusplus/pp-cctype.h
index 1376119151..91c39604f1 100644
--- a/src/libs/cplusplus/pp-cctype.h
+++ b/src/libs/cplusplus/pp-cctype.h
@@ -43,8 +43,7 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef CPLUSPLUS_PP_CCTYPE_H
-#define CPLUSPLUS_PP_CCTYPE_H
+#pragma once
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 
@@ -65,5 +64,3 @@ inline bool CPLUSPLUS_EXPORT pp_isspace (int ch)
 { return std::isspace ((unsigned char) ch) != 0; }
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_PP_CCTYPE_H
diff --git a/src/libs/cplusplus/pp-engine.h b/src/libs/cplusplus/pp-engine.h
index 6b24fd8d9f..b265de6d46 100644
--- a/src/libs/cplusplus/pp-engine.h
+++ b/src/libs/cplusplus/pp-engine.h
@@ -43,8 +43,7 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef CPLUSPLUS_PP_ENGINE_H
-#define CPLUSPLUS_PP_ENGINE_H
+#pragma once
 
 #include "PPToken.h"
 #include "PreprocessorClient.h"
@@ -262,5 +261,3 @@ private:
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_PP_ENGINE_H
diff --git a/src/libs/cplusplus/pp-scanner.h b/src/libs/cplusplus/pp-scanner.h
index 13209ea6c3..1c493761b9 100644
--- a/src/libs/cplusplus/pp-scanner.h
+++ b/src/libs/cplusplus/pp-scanner.h
@@ -43,8 +43,7 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef CPLUSPLUS_PP_SCANNER_H
-#define CPLUSPLUS_PP_SCANNER_H
+#pragma once
 
 namespace CPlusPlus {
 
@@ -118,5 +117,3 @@ struct pp_skip_argument
 };
 
 } // namespace CPlusPlus
-
-#endif // CPLUSPLUS_PP_SCANNER_H
diff --git a/src/libs/cplusplus/pp.h b/src/libs/cplusplus/pp.h
index e703f6c9a8..b4b75297e4 100644
--- a/src/libs/cplusplus/pp.h
+++ b/src/libs/cplusplus/pp.h
@@ -43,13 +43,10 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
-#ifndef CPLUSPLUS_PREPROCESSOR_H
-#define CPLUSPLUS_PREPROCESSOR_H
+#pragma once
 
 #include "Macro.h"
 #include "PreprocessorClient.h"
 #include "PreprocessorEnvironment.h"
 #include "pp-scanner.h"
 #include "pp-engine.h"
-
-#endif // CPLUSPLUS_PREPROCESSOR_H
diff --git a/src/libs/extensionsystem/extensionsystem_global.h b/src/libs/extensionsystem/extensionsystem_global.h
index 5239e814cb..2cc8add8c5 100644
--- a/src/libs/extensionsystem/extensionsystem_global.h
+++ b/src/libs/extensionsystem/extensionsystem_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTENSIONSYSTEM_GLOBAL_H
-#define EXTENSIONSYSTEM_GLOBAL_H
+#pragma once
 
 #include <QLoggingCategory>
 #include <qglobal.h>
@@ -36,5 +35,3 @@
 #endif
 
 Q_DECLARE_LOGGING_CATEGORY(pluginLog)
-
-#endif // EXTENSIONSYSTEM_GLOBAL_H
diff --git a/src/libs/extensionsystem/invoker.h b/src/libs/extensionsystem/invoker.h
index 6574392a3b..1286e07aaa 100644
--- a/src/libs/extensionsystem/invoker.h
+++ b/src/libs/extensionsystem/invoker.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTENSIONSYSTEM_INVOKER_H
-#define EXTENSIONSYSTEM_INVOKER_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -202,5 +201,3 @@ Result invoke(QObject *target, const char *slot,
 }
 
 } // namespace ExtensionSystem
-
-#endif // EXTENSIONSYSTEM_INVOKER_H
diff --git a/src/libs/extensionsystem/iplugin.h b/src/libs/extensionsystem/iplugin.h
index 1910f00c36..42b4a564c7 100644
--- a/src/libs/extensionsystem/iplugin.h
+++ b/src/libs/extensionsystem/iplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IPLUGIN_H
-#define IPLUGIN_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -79,5 +78,3 @@ private:
 };
 
 } // namespace ExtensionSystem
-
-#endif // IPLUGIN_H
diff --git a/src/libs/extensionsystem/iplugin_p.h b/src/libs/extensionsystem/iplugin_p.h
index 17e5a70aa1..0c3824dd39 100644
--- a/src/libs/extensionsystem/iplugin_p.h
+++ b/src/libs/extensionsystem/iplugin_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IPLUGIN_P_H
-#define IPLUGIN_P_H
+#pragma once
 
 #include "iplugin.h"
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace ExtensionSystem
-
-#endif // IPLUGIN_P_H
diff --git a/src/libs/extensionsystem/optionsparser.h b/src/libs/extensionsystem/optionsparser.h
index 12095f062b..7b85d9e62a 100644
--- a/src/libs/extensionsystem/optionsparser.h
+++ b/src/libs/extensionsystem/optionsparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPTIONSPARSER_H
-#define OPTIONSPARSER_H
+#pragma once
 
 #include <QStringList>
 #include <QMap>
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace ExtensionSystem
-
-#endif // OPTIONSPARSER_H
diff --git a/src/libs/extensionsystem/plugincollection.h b/src/libs/extensionsystem/plugincollection.h
index 8415dd0afe..fd38bcedff 100644
--- a/src/libs/extensionsystem/plugincollection.h
+++ b/src/libs/extensionsystem/plugincollection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINCOLLECTION_H
-#define PLUGINCOLLECTION_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace ExtensionSystem
-
-#endif // PLUGINCOLLECTION_H
diff --git a/src/libs/extensionsystem/plugindetailsview.h b/src/libs/extensionsystem/plugindetailsview.h
index 38b5ba5f15..b6990e2960 100644
--- a/src/libs/extensionsystem/plugindetailsview.h
+++ b/src/libs/extensionsystem/plugindetailsview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINDETAILSVIEW_H_
-#define PLUGINDETAILSVIEW_H_
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace ExtensionSystem
-
-#endif
diff --git a/src/libs/extensionsystem/pluginerroroverview.h b/src/libs/extensionsystem/pluginerroroverview.h
index dd2ac7352a..174efeee20 100644
--- a/src/libs/extensionsystem/pluginerroroverview.h
+++ b/src/libs/extensionsystem/pluginerroroverview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINERROROVERVIEW_H
-#define PLUGINERROROVERVIEW_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -56,5 +55,3 @@ private:
 };
 
 } // ExtensionSystem
-
-#endif // PLUGINERROROVERVIEW_H
diff --git a/src/libs/extensionsystem/pluginerrorview.h b/src/libs/extensionsystem/pluginerrorview.h
index b35f83c59b..1655f4adcf 100644
--- a/src/libs/extensionsystem/pluginerrorview.h
+++ b/src/libs/extensionsystem/pluginerrorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINERRORVIEW_H
-#define PLUGINERRORVIEW_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace ExtensionSystem
-
-#endif // PLUGINERRORVIEW_H
diff --git a/src/libs/extensionsystem/pluginmanager.h b/src/libs/extensionsystem/pluginmanager.h
index 49ed9ae7ef..c2be55551f 100644
--- a/src/libs/extensionsystem/pluginmanager.h
+++ b/src/libs/extensionsystem/pluginmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTENSIONSYSTEM_PLUGINMANAGER_H
-#define EXTENSIONSYSTEM_PLUGINMANAGER_H
+#pragma once
 
 #include "extensionsystem_global.h"
 #include <aggregation/aggregate.h>
@@ -163,5 +162,3 @@ public slots:
 };
 
 } // namespace ExtensionSystem
-
-#endif // EXTENSIONSYSTEM_PLUGINMANAGER_H
diff --git a/src/libs/extensionsystem/pluginmanager_p.h b/src/libs/extensionsystem/pluginmanager_p.h
index 968fa1d08e..e0342d401c 100644
--- a/src/libs/extensionsystem/pluginmanager_p.h
+++ b/src/libs/extensionsystem/pluginmanager_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINMANAGER_P_H
-#define PLUGINMANAGER_P_H
+#pragma once
 
 #include "pluginspec.h"
 
@@ -154,5 +153,3 @@ private:
 
 } // namespace Internal
 } // namespace ExtensionSystem
-
-#endif // PLUGINMANAGER_P_H
diff --git a/src/libs/extensionsystem/pluginspec.h b/src/libs/extensionsystem/pluginspec.h
index bab1bd2371..7d41c91158 100644
--- a/src/libs/extensionsystem/pluginspec.h
+++ b/src/libs/extensionsystem/pluginspec.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINSPEC_H
-#define PLUGINSPEC_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -139,6 +138,3 @@ private:
 };
 
 } // namespace ExtensionSystem
-
-#endif // PLUGINSPEC_H
-
diff --git a/src/libs/extensionsystem/pluginspec_p.h b/src/libs/extensionsystem/pluginspec_p.h
index 62feba4496..bd172fef19 100644
--- a/src/libs/extensionsystem/pluginspec_p.h
+++ b/src/libs/extensionsystem/pluginspec_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINSPEC_P_H
-#define PLUGINSPEC_P_H
+#pragma once
 
 #include "pluginspec.h"
 #include "iplugin.h"
@@ -115,5 +114,3 @@ private:
 
 } // namespace Internal
 } // namespace ExtensionSystem
-
-#endif // PLUGINSPEC_P_H
diff --git a/src/libs/extensionsystem/pluginview.h b/src/libs/extensionsystem/pluginview.h
index c65d8cc9f5..3b4da885fe 100644
--- a/src/libs/extensionsystem/pluginview.h
+++ b/src/libs/extensionsystem/pluginview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINVIEW_H
-#define PLUGINVIEW_H
+#pragma once
 
 #include "extensionsystem_global.h"
 
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespae ExtensionSystem
-
-#endif // PLUGIN_VIEW_H
diff --git a/src/libs/extensionsystem/test/manual/pluginview/plugindialog.h b/src/libs/extensionsystem/test/manual/pluginview/plugindialog.h
index f073e5c4ca..bc666c0cbc 100644
--- a/src/libs/extensionsystem/test/manual/pluginview/plugindialog.h
+++ b/src/libs/extensionsystem/test/manual/pluginview/plugindialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINDIALOG_H
-#define PLUGINDIALOG_H
+#pragma once
 
 #include <extensionsystem/pluginview.h>
 #include <extensionsystem/pluginmanager.h>
@@ -51,5 +50,3 @@ private:
     QPushButton *m_detailsButton;
     QPushButton *m_errorDetailsButton;
 };
-
-#endif // PLUGINDIALOG_H
diff --git a/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin1/plugin1.h b/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin1/plugin1.h
index 02e85d090d..07c6c7d9bb 100644
--- a/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin1/plugin1.h
+++ b/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin1/plugin1.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGIN1_H
-#define PLUGIN1_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -48,5 +47,3 @@ private:
 };
 
 } // namespace Plugin1
-
-#endif // PLUGIN1_H
diff --git a/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin2/plugin2.h b/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin2/plugin2.h
index 7f4b00bcbd..0b43ef0f2f 100644
--- a/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin2/plugin2.h
+++ b/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin2/plugin2.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGIN2_H
-#define PLUGIN2_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -48,5 +47,3 @@ private:
 };
 
 } // namespace Plugin2
-
-#endif // PLUGIN2_H
diff --git a/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin3/plugin3.h b/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin3/plugin3.h
index ed8765f023..478d753053 100644
--- a/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin3/plugin3.h
+++ b/src/libs/extensionsystem/test/manual/pluginview/plugins/plugin3/plugin3.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGIN3_H
-#define PLUGIN3_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -48,5 +47,3 @@ private:
 };
 
 } // namespace Plugin3
-
-#endif // PLUGIN3_H
diff --git a/src/libs/glsl/glsl.h b/src/libs/glsl/glsl.h
index 868d3c9271..bc5515ab05 100644
--- a/src/libs/glsl/glsl.h
+++ b/src/libs/glsl/glsl.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSL_H
-#define GLSL_H
+#pragma once
 
 #include <qglobal.h>
 #include <cstdlib>
@@ -75,5 +74,3 @@ class AST;
 class TranslationUnitAST;
 template <typename T> class List;
 }
-
-#endif // GLSL_H
diff --git a/src/libs/glsl/glslast.h b/src/libs/glsl/glslast.h
index 988e4b88a8..3711b30bdf 100644
--- a/src/libs/glsl/glslast.h
+++ b/src/libs/glsl/glslast.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLAST_H
-#define GLSLAST_H
+#pragma once
 
 #include "glsl.h"
 #include "glslmemorypool.h"
@@ -992,5 +991,3 @@ public: // attributes
 };
 
 } // namespace GLSL
-
-#endif // GLSLAST_H
diff --git a/src/libs/glsl/glslastdump.h b/src/libs/glsl/glslastdump.h
index 086d158f0b..8213b913f1 100644
--- a/src/libs/glsl/glslastdump.h
+++ b/src/libs/glsl/glslastdump.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLASTDUMP_H
-#define GLSLASTDUMP_H
+#pragma once
 
 #include "glslastvisitor.h"
 
@@ -49,5 +48,3 @@ private:
 };
 
 } // namespace GLSL
-
-#endif // GLSLASTDUMP_H
diff --git a/src/libs/glsl/glslastvisitor.h b/src/libs/glsl/glslastvisitor.h
index 65816d8703..4cd3530de8 100644
--- a/src/libs/glsl/glslastvisitor.h
+++ b/src/libs/glsl/glslastvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLASTVISITOR_H
-#define GLSLASTVISITOR_H
+#pragma once
 
 #include "glslast.h"
 
@@ -154,5 +153,3 @@ public:
 };
 
 } // namespace GLSL
-
-#endif // GLSLASTVISITOR_H
diff --git a/src/libs/glsl/glslengine.h b/src/libs/glsl/glslengine.h
index eeb6697585..6b126111f6 100644
--- a/src/libs/glsl/glslengine.h
+++ b/src/libs/glsl/glslengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLENGINE_H
-#define GLSLENGINE_H
+#pragma once
 
 #include "glsl.h"
 #include "glslmemorypool.h"
@@ -142,5 +141,3 @@ private:
 };
 
 } // namespace GLSL
-
-#endif // GLSLENGINE_H
diff --git a/src/libs/glsl/glsllexer.h b/src/libs/glsl/glsllexer.h
index 384688042d..2b0ad83fed 100644
--- a/src/libs/glsl/glsllexer.h
+++ b/src/libs/glsl/glsllexer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLLEXER_H
-#define GLSLLEXER_H
+#pragma once
 
 #include "glsl.h"
 #include <qstring.h>
@@ -129,5 +128,3 @@ private:
 };
 
 } // namespace GLSL
-
-#endif // GLSLLEXER_H
diff --git a/src/libs/glsl/glslmemorypool.h b/src/libs/glsl/glslmemorypool.h
index fd55187c96..b33728b115 100644
--- a/src/libs/glsl/glslmemorypool.h
+++ b/src/libs/glsl/glslmemorypool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLMEMORYPOOL_H
-#define GLSLMEMORYPOOL_H
+#pragma once
 
 #include "glsl.h"
 #include <new>
@@ -87,6 +86,3 @@ public:
 };
 
 } // namespace GLSL
-
-
-#endif // GLSLMEMORYPOOL_H
diff --git a/src/libs/glsl/glslparsertable_p.h b/src/libs/glsl/glslparsertable_p.h
index 667b85b836..b046b5df7a 100644
--- a/src/libs/glsl/glslparsertable_p.h
+++ b/src/libs/glsl/glslparsertable_p.h
@@ -35,8 +35,7 @@
 //
 
 // This file was generated by qlalr - DO NOT EDIT!
-#ifndef GLSLPARSERTABLE_P_H
-#define GLSLPARSERTABLE_P_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -264,5 +263,3 @@ public:
 
 
 QT_END_NAMESPACE
-#endif // GLSLPARSERTABLE_P_H
-
diff --git a/src/libs/glsl/glslsemantic.h b/src/libs/glsl/glslsemantic.h
index 8347604995..9c21a7a4be 100644
--- a/src/libs/glsl/glslsemantic.h
+++ b/src/libs/glsl/glslsemantic.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLSEMANTIC_H
-#define GLSLSEMANTIC_H
+#pragma once
 
 #include "glslastvisitor.h"
 #include "glsltype.h"
@@ -127,5 +126,3 @@ private:
 };
 
 } // namespace GLSL
-
-#endif // GLSLSEMANTIC_H
diff --git a/src/libs/glsl/glslsymbol.h b/src/libs/glsl/glslsymbol.h
index cc91525646..db5c0dab9b 100644
--- a/src/libs/glsl/glslsymbol.h
+++ b/src/libs/glsl/glslsymbol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLSYMBOL_H
-#define GLSLSYMBOL_H
+#pragma once
 
 #include "glsl.h"
 #include <QString>
@@ -77,5 +76,3 @@ public:
 };
 
 } // namespace GLSL
-
-#endif // GLSLSYMBOL_H
diff --git a/src/libs/glsl/glslsymbols.h b/src/libs/glsl/glslsymbols.h
index 1a381c4495..32fde05bbb 100644
--- a/src/libs/glsl/glslsymbols.h
+++ b/src/libs/glsl/glslsymbols.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLSYMBOLS_H
-#define GLSLSYMBOLS_H
+#pragma once
 
 #include "glsltype.h"
 #include "glslsymbol.h"
@@ -103,5 +102,3 @@ private:
 };
 
 } // namespace GLSL
-
-#endif // GLSLSYMBOLS_H
diff --git a/src/libs/glsl/glsltype.h b/src/libs/glsl/glsltype.h
index 265959c1aa..94aa422937 100644
--- a/src/libs/glsl/glsltype.h
+++ b/src/libs/glsl/glsltype.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLTYPE_H
-#define GLSLTYPE_H
+#pragma once
 
 #include "glsl.h"
 
@@ -60,5 +59,3 @@ public:
 };
 
 } // namespace GLSL
-
-#endif // GLSLTYPE_H
diff --git a/src/libs/glsl/glsltypes.h b/src/libs/glsl/glsltypes.h
index 2b53ebfe37..5e89b0c3a4 100644
--- a/src/libs/glsl/glsltypes.h
+++ b/src/libs/glsl/glsltypes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLTYPES_H
-#define GLSLTYPES_H
+#pragma once
 
 #include "glsltype.h"
 #include "glslsymbol.h"
@@ -290,5 +289,3 @@ private:
 };
 
 } // namespace GLSL
-
-#endif // GLSLTYPES_H
diff --git a/src/libs/languageutils/componentversion.h b/src/libs/languageutils/componentversion.h
index 7bdbc26b5e..8e271bccab 100644
--- a/src/libs/languageutils/componentversion.h
+++ b/src/libs/languageutils/componentversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTVERSION_H
-#define COMPONENTVERSION_H
+#pragma once
 
 #include "languageutils_global.h"
 
@@ -66,5 +65,3 @@ bool LANGUAGEUTILS_EXPORT operator==(const ComponentVersion &lhs, const Componen
 bool LANGUAGEUTILS_EXPORT operator!=(const ComponentVersion &lhs, const ComponentVersion &rhs);
 
 } // namespace LanguageUtils
-
-#endif // COMPONENTVERSION_H
diff --git a/src/libs/languageutils/fakemetaobject.h b/src/libs/languageutils/fakemetaobject.h
index 8ea96eeb37..543d80b45c 100644
--- a/src/libs/languageutils/fakemetaobject.h
+++ b/src/libs/languageutils/fakemetaobject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FAKEMETAOBJECT_H
-#define FAKEMETAOBJECT_H
+#pragma once
 
 #include "languageutils_global.h"
 #include "componentversion.h"
@@ -230,5 +229,3 @@ public:
 };
 
 } // namespace LanguageUtils
-
-#endif // FAKEMETAOBJECT_H
diff --git a/src/libs/languageutils/languageutils_global.h b/src/libs/languageutils/languageutils_global.h
index a74345fc81..9de119ef98 100644
--- a/src/libs/languageutils/languageutils_global.h
+++ b/src/libs/languageutils/languageutils_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LANGUAGEUTILS_GLOBAL_H
-#define LANGUAGEUTILS_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -35,5 +34,3 @@
 #else
 #  define LANGUAGEUTILS_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // LANGUAGEUTILS_GLOBAL_H
diff --git a/src/libs/modelinglib/qmt/config/configcontroller.h b/src/libs/modelinglib/qmt/config/configcontroller.h
index 0fb6a8a3a7..34135bb4af 100644
--- a/src/libs/modelinglib/qmt/config/configcontroller.h
+++ b/src/libs/modelinglib/qmt/config/configcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CONFIGCONTROLLER_H
-#define QMT_CONFIGCONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CONFIGCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/config/sourcepos.h b/src/libs/modelinglib/qmt/config/sourcepos.h
index ee31261ca9..2d86eca92d 100644
--- a/src/libs/modelinglib/qmt/config/sourcepos.h
+++ b/src/libs/modelinglib/qmt/config/sourcepos.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SOURCEPOS_H
-#define QMT_SOURCEPOS_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -49,5 +48,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SOURCEPOS_H
diff --git a/src/libs/modelinglib/qmt/config/stereotypedefinitionparser.h b/src/libs/modelinglib/qmt/config/stereotypedefinitionparser.h
index 465c3c5eb3..390ab4424e 100644
--- a/src/libs/modelinglib/qmt/config/stereotypedefinitionparser.h
+++ b/src/libs/modelinglib/qmt/config/stereotypedefinitionparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STEREOTYPEDEFINITIONPARSER_H
-#define QMT_STEREOTYPEDEFINITIONPARSER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/exceptions.h"
@@ -119,5 +118,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STEREOTYPEDEFINITIONPARSER_H
diff --git a/src/libs/modelinglib/qmt/config/stringtextsource.h b/src/libs/modelinglib/qmt/config/stringtextsource.h
index 5fbd53e694..01301ca6cd 100644
--- a/src/libs/modelinglib/qmt/config/stringtextsource.h
+++ b/src/libs/modelinglib/qmt/config/stringtextsource.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STRINGTEXTSOURCE_H
-#define QMT_STRINGTEXTSOURCE_H
+#pragma once
 
 #include "textsource.h"
 
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STRINGTEXTSOURCE_H
diff --git a/src/libs/modelinglib/qmt/config/textscanner.h b/src/libs/modelinglib/qmt/config/textscanner.h
index bd46ba9339..de682a65c4 100644
--- a/src/libs/modelinglib/qmt/config/textscanner.h
+++ b/src/libs/modelinglib/qmt/config/textscanner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TEXTSCANNER_H
-#define QMT_TEXTSCANNER_H
+#pragma once
 
 #include <QObject>
 
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_TEXTSCANNER_H
diff --git a/src/libs/modelinglib/qmt/config/textsource.h b/src/libs/modelinglib/qmt/config/textsource.h
index 211f2f522d..dd9a7edc65 100644
--- a/src/libs/modelinglib/qmt/config/textsource.h
+++ b/src/libs/modelinglib/qmt/config/textsource.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TEXTSOURCE_H
-#define QMT_TEXTSOURCE_H
+#pragma once
 
 #include "sourcepos.h"
 
@@ -55,5 +54,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_TEXTSOURCE_H
diff --git a/src/libs/modelinglib/qmt/config/token.h b/src/libs/modelinglib/qmt/config/token.h
index 12381f8a16..8672c0ea1d 100644
--- a/src/libs/modelinglib/qmt/config/token.h
+++ b/src/libs/modelinglib/qmt/config/token.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TOKEN_H
-#define QMT_TOKEN_H
+#pragma once
 
 #include "sourcepos.h"
 
@@ -70,5 +69,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_TOKEN_H
diff --git a/src/libs/modelinglib/qmt/controller/container.h b/src/libs/modelinglib/qmt/controller/container.h
index fa2056e6da..5750cecb84 100644
--- a/src/libs/modelinglib/qmt/controller/container.h
+++ b/src/libs/modelinglib/qmt/controller/container.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CONTAINER_H
-#define QMT_CONTAINER_H
+#pragma once
 
 #include <QList>
 
@@ -90,5 +89,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CONTAINER_H
diff --git a/src/libs/modelinglib/qmt/controller/namecontroller.h b/src/libs/modelinglib/qmt/controller/namecontroller.h
index 6326301177..ec77165695 100644
--- a/src/libs/modelinglib/qmt/controller/namecontroller.h
+++ b/src/libs/modelinglib/qmt/controller/namecontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_NAMECONTROLLER_H
-#define QMT_NAMECONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -53,5 +52,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_NAMECONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/controller/references.h b/src/libs/modelinglib/qmt/controller/references.h
index f9711c0159..c6fbbd3849 100644
--- a/src/libs/modelinglib/qmt/controller/references.h
+++ b/src/libs/modelinglib/qmt/controller/references.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_REFERENCES_H
-#define QMT_REFERENCES_H
+#pragma once
 
 #include <QList>
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_REFERENCES_H
diff --git a/src/libs/modelinglib/qmt/controller/selection.h b/src/libs/modelinglib/qmt/controller/selection.h
index 4a8cb2969a..bca36c802b 100644
--- a/src/libs/modelinglib/qmt/controller/selection.h
+++ b/src/libs/modelinglib/qmt/controller/selection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SELECTION_H
-#define QMT_SELECTION_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SELECTION_H
diff --git a/src/libs/modelinglib/qmt/controller/undocommand.h b/src/libs/modelinglib/qmt/controller/undocommand.h
index 56d4b6aee2..52cd00b707 100644
--- a/src/libs/modelinglib/qmt/controller/undocommand.h
+++ b/src/libs/modelinglib/qmt/controller/undocommand.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_UNDOCOMMAND_H
-#define QMT_UNDOCOMMAND_H
+#pragma once
 
 #include <QUndoCommand>
 #include "qmt/infrastructure/qmt_global.h"
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_UNDOCOMMAND_H
diff --git a/src/libs/modelinglib/qmt/controller/undocontroller.h b/src/libs/modelinglib/qmt/controller/undocontroller.h
index a18b00894c..7a3e162d1b 100644
--- a/src/libs/modelinglib/qmt/controller/undocontroller.h
+++ b/src/libs/modelinglib/qmt/controller/undocontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_UNDOCONTROLLER_H
-#define QMT_UNDOCONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_UNDOCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/diagram/dannotation.h b/src/libs/modelinglib/qmt/diagram/dannotation.h
index a6ec215147..fe1e57d37d 100644
--- a/src/libs/modelinglib/qmt/diagram/dannotation.h
+++ b/src/libs/modelinglib/qmt/diagram/dannotation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DANNOTATION_H
-#define QMT_DANNOTATION_H
+#pragma once
 
 #include "delement.h"
 
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DANNOTATION_H
diff --git a/src/libs/modelinglib/qmt/diagram/dassociation.h b/src/libs/modelinglib/qmt/diagram/dassociation.h
index 65b48bed77..1da72c36b5 100644
--- a/src/libs/modelinglib/qmt/diagram/dassociation.h
+++ b/src/libs/modelinglib/qmt/diagram/dassociation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DASSOCIATION_H
-#define QMT_DASSOCIATION_H
+#pragma once
 
 #include "drelation.h"
 
@@ -81,5 +80,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DASSOCIATION_H
diff --git a/src/libs/modelinglib/qmt/diagram/dboundary.h b/src/libs/modelinglib/qmt/diagram/dboundary.h
index f475eb654f..cb617f7c6c 100644
--- a/src/libs/modelinglib/qmt/diagram/dboundary.h
+++ b/src/libs/modelinglib/qmt/diagram/dboundary.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DBOUNDARY_H
-#define QMT_DBOUNDARY_H
+#pragma once
 
 #include "delement.h"
 
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DBOUNDARY_H
diff --git a/src/libs/modelinglib/qmt/diagram/dclass.h b/src/libs/modelinglib/qmt/diagram/dclass.h
index 3a56f6ad98..c86d8b335c 100644
--- a/src/libs/modelinglib/qmt/diagram/dclass.h
+++ b/src/libs/modelinglib/qmt/diagram/dclass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DCLASS_H
-#define QMT_DCLASS_H
+#pragma once
 
 #include "dobject.h"
 #include "qmt/model/mclassmember.h"
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DCLASS_H
diff --git a/src/libs/modelinglib/qmt/diagram/dcomponent.h b/src/libs/modelinglib/qmt/diagram/dcomponent.h
index 448b4f1585..03ef43ecdb 100644
--- a/src/libs/modelinglib/qmt/diagram/dcomponent.h
+++ b/src/libs/modelinglib/qmt/diagram/dcomponent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DCOMPONENT_H
-#define QMT_DCOMPONENT_H
+#pragma once
 
 #include "dobject.h"
 
@@ -47,5 +46,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DCOMPONENT_H
diff --git a/src/libs/modelinglib/qmt/diagram/dconstvisitor.h b/src/libs/modelinglib/qmt/diagram/dconstvisitor.h
index 9b3a1b2e45..23bdb91d58 100644
--- a/src/libs/modelinglib/qmt/diagram/dconstvisitor.h
+++ b/src/libs/modelinglib/qmt/diagram/dconstvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DCONSTVISITOR_H
-#define QMT_DCONSTVISITOR_H
+#pragma once
 
 namespace qmt {
 
@@ -63,5 +62,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DCONSTVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram/ddependency.h b/src/libs/modelinglib/qmt/diagram/ddependency.h
index ad8ec69620..7c3c712452 100644
--- a/src/libs/modelinglib/qmt/diagram/ddependency.h
+++ b/src/libs/modelinglib/qmt/diagram/ddependency.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DDEPENDENCY_H
-#define QMT_DDEPENDENCY_H
+#pragma once
 
 #include "drelation.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DDEPENDENCY_H
diff --git a/src/libs/modelinglib/qmt/diagram/ddiagram.h b/src/libs/modelinglib/qmt/diagram/ddiagram.h
index 50378dde17..59dfd88f83 100644
--- a/src/libs/modelinglib/qmt/diagram/ddiagram.h
+++ b/src/libs/modelinglib/qmt/diagram/ddiagram.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DDIAGRAM_H
-#define QMT_DDIAGRAM_H
+#pragma once
 
 #include "dobject.h"
 
@@ -41,5 +40,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DDIAGRAM_H
diff --git a/src/libs/modelinglib/qmt/diagram/delement.h b/src/libs/modelinglib/qmt/diagram/delement.h
index 5d33b6cac8..bd454408cb 100644
--- a/src/libs/modelinglib/qmt/diagram/delement.h
+++ b/src/libs/modelinglib/qmt/diagram/delement.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DELEMENT_H
-#define QMT_DELEMENT_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DELEMENT_H
diff --git a/src/libs/modelinglib/qmt/diagram/dinheritance.h b/src/libs/modelinglib/qmt/diagram/dinheritance.h
index 5869f0fc73..82d6785377 100644
--- a/src/libs/modelinglib/qmt/diagram/dinheritance.h
+++ b/src/libs/modelinglib/qmt/diagram/dinheritance.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DINHERITANCE_H
-#define QMT_DINHERITANCE_H
+#pragma once
 
 #include "drelation.h"
 
@@ -48,5 +47,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DINHERITANCE_H
diff --git a/src/libs/modelinglib/qmt/diagram/ditem.h b/src/libs/modelinglib/qmt/diagram/ditem.h
index 8539f784f4..7782e9497d 100644
--- a/src/libs/modelinglib/qmt/diagram/ditem.h
+++ b/src/libs/modelinglib/qmt/diagram/ditem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DITEM_H
-#define QMT_DITEM_H
+#pragma once
 
 #include "dobject.h"
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram/dobject.h b/src/libs/modelinglib/qmt/diagram/dobject.h
index b31ce24392..6e5f85358a 100644
--- a/src/libs/modelinglib/qmt/diagram/dobject.h
+++ b/src/libs/modelinglib/qmt/diagram/dobject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DOBJECT_H
-#define QMT_DOBJECT_H
+#pragma once
 
 #include "delement.h"
 
@@ -120,5 +119,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DOBJECT_H
diff --git a/src/libs/modelinglib/qmt/diagram/dpackage.h b/src/libs/modelinglib/qmt/diagram/dpackage.h
index bcb2f68aec..c1ca291c7b 100644
--- a/src/libs/modelinglib/qmt/diagram/dpackage.h
+++ b/src/libs/modelinglib/qmt/diagram/dpackage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DPACKAGE_H
-#define QMT_DPACKAGE_H
+#pragma once
 
 #include "dobject.h"
 
@@ -41,5 +40,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DPACKAGE_H
diff --git a/src/libs/modelinglib/qmt/diagram/drelation.h b/src/libs/modelinglib/qmt/diagram/drelation.h
index 59c426b41e..18aaed94a4 100644
--- a/src/libs/modelinglib/qmt/diagram/drelation.h
+++ b/src/libs/modelinglib/qmt/diagram/drelation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DRELATION_H
-#define QMT_DRELATION_H
+#pragma once
 
 #include "delement.h"
 
@@ -86,5 +85,3 @@ inline bool operator!=(const DRelation::IntermediatePoint &lhs,
 }
 
 } // namespace qmt
-
-#endif // QMT_DRELATION_H
diff --git a/src/libs/modelinglib/qmt/diagram/dvisitor.h b/src/libs/modelinglib/qmt/diagram/dvisitor.h
index 00a0ffee25..bb9e7873ee 100644
--- a/src/libs/modelinglib/qmt/diagram/dvisitor.h
+++ b/src/libs/modelinglib/qmt/diagram/dvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DVISITOR_H
-#define QMT_DVISITOR_H
+#pragma once
 
 namespace qmt {
 
@@ -63,5 +62,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dclonevisitor.h b/src/libs/modelinglib/qmt/diagram_controller/dclonevisitor.h
index 01c83628c3..c69534b542 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dclonevisitor.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dclonevisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DCLONEVISITOR_H
-#define QMT_DCLONEVISITOR_H
+#pragma once
 
 #include "qmt/diagram/dconstvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DCLONEVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dcontainer.h b/src/libs/modelinglib/qmt/diagram_controller/dcontainer.h
index 59684efc5d..b6ccd86756 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dcontainer.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dcontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DCONTAINER_H
-#define QMT_DCONTAINER_H
+#pragma once
 
 #include "qmt/controller/container.h"
 #include "qmt/diagram/delement.h"
@@ -36,5 +35,3 @@ class QMT_EXPORT DContainer : public Container<DElement>
 };
 
 } // namespace qmt
-
-#endif // QMT_DCONTAINER_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dfactory.h b/src/libs/modelinglib/qmt/diagram_controller/dfactory.h
index 46b91599c4..5d5e48ded8 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dfactory.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DFACTORY_H
-#define QMT_DFACTORY_H
+#pragma once
 
 #include "qmt/model/mconstvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DFACTORY_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dflatassignmentvisitor.h b/src/libs/modelinglib/qmt/diagram_controller/dflatassignmentvisitor.h
index 59a30dc4bb..8c2537ab05 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dflatassignmentvisitor.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dflatassignmentvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DFLATASSIGNMENTVISITOR_H
-#define QMT_DFLATASSIGNMENTVISITOR_H
+#pragma once
 
 #include "qmt/diagram/dconstvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DFLATASSIGNMENTVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/diagramcontroller.h b/src/libs/modelinglib/qmt/diagram_controller/diagramcontroller.h
index 074f0f7d0a..4199208e53 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/diagramcontroller.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/diagramcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMCONTROLLER_H
-#define QMT_DIAGRAMCONTROLLER_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -170,5 +169,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // DIAGRAMCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dreferences.h b/src/libs/modelinglib/qmt/diagram_controller/dreferences.h
index 13a492783f..325cbef306 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dreferences.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DREFERENCES_H
-#define QMT_DREFERENCES_H
+#pragma once
 
 #include "qmt/controller/references.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -38,5 +37,3 @@ class QMT_EXPORT DReferences : public References<DElement>
 };
 
 } // namespace qmt
-
-#endif // QMT_DREFERENCES_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dselection.h b/src/libs/modelinglib/qmt/diagram_controller/dselection.h
index f653777d69..030c19dfa5 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dselection.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dselection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DSELECTION_H
-#define QMT_DSELECTION_H
+#pragma once
 
 #include "qmt/controller/selection.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -36,5 +35,3 @@ class QMT_EXPORT DSelection : public Selection
 };
 
 } // namespace qmt
-
-#endif // QMT_DSELECTION_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dupdatevisitor.h b/src/libs/modelinglib/qmt/diagram_controller/dupdatevisitor.h
index ade9391b01..e88e9eed4b 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dupdatevisitor.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dupdatevisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DUPDATEVISITOR_H
-#define QMT_DUPDATEVISITOR_H
+#pragma once
 
 #include "qmt/model/mconstvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DUPDATEVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_controller/dvoidvisitor.h b/src/libs/modelinglib/qmt/diagram_controller/dvoidvisitor.h
index 4f4328694e..4519c1a943 100644
--- a/src/libs/modelinglib/qmt/diagram_controller/dvoidvisitor.h
+++ b/src/libs/modelinglib/qmt/diagram_controller/dvoidvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DVOIDVISITOR_H
-#define QMT_DVOIDVISITOR_H
+#pragma once
 
 #include "qmt/diagram/dvisitor.h"
 #include "qmt/diagram/dconstvisitor.h"
@@ -73,5 +72,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // DVOIDVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/alignable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/alignable.h
index e78755e305..2b569ecce8 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/alignable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/alignable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ALIGNABLE_H
-#define QMT_ALIGNABLE_H
+#pragma once
 
 #include <QString>
 
@@ -51,5 +50,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_ALIGNABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/editable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/editable.h
index eab027ab56..de0e70edd5 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/editable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/editable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_EDITABLE_H
-#define QMT_EDITABLE_H
+#pragma once
 
 namespace qmt {
 
@@ -39,5 +38,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_EDITABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/intersectionable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/intersectionable.h
index 4e697d19e0..bb7b0ec81c 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/intersectionable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/intersectionable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_INTERSECTIONABLE_H
-#define QMT_INTERSECTIONABLE_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -45,5 +44,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_INTERSECTIONABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/latchable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/latchable.h
index fb9c0ae324..3f720cdec2 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/latchable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/latchable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_LATCHABLE_H
-#define QMT_LATCHABLE_H
+#pragma once
 
 #include <QList>
 
@@ -82,5 +81,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_LATCHABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/moveable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/moveable.h
index a5e25b5534..0588fad2bc 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/moveable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/moveable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MOVEABLE_H
-#define QMT_MOVEABLE_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -44,5 +43,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MOVEABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/relationable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/relationable.h
index ac4bd952ac..793bb3f796 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/relationable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/relationable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_RELATIONABLE_H
-#define QMT_RELATIONABLE_H
+#pragma once
 
 #include <QList>
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_RELATIONABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/resizable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/resizable.h
index 0bcf587c34..5fbda477e7 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/resizable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/resizable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_RESIZABLE_H
-#define QMT_RESIZABLE_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -58,5 +57,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_RESIZABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/selectable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/selectable.h
index c600d986de..5afcf64efd 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/selectable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/selectable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SELECTABLE_H
-#define QMT_SELECTABLE_H
+#pragma once
 
 namespace qmt {
 
@@ -40,5 +39,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_SELECTABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/capabilities/windable.h b/src/libs/modelinglib/qmt/diagram_scene/capabilities/windable.h
index 16228de48b..8d7afa63c0 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/capabilities/windable.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/capabilities/windable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_WINDABLE_H
-#define QMT_WINDABLE_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -47,5 +46,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_WINDABLE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/diagramgraphicsscene.h b/src/libs/modelinglib/qmt/diagram_scene/diagramgraphicsscene.h
index cadc04aa29..3be43fa397 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/diagramgraphicsscene.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/diagramgraphicsscene.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMGRAPHICSSCENE_H
-#define QMT_DIAGRAMGRAPHICSSCENE_H
+#pragma once
 
 #include <QGraphicsScene>
 #include "qmt/infrastructure/qmt_global.h"
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMGRAPHICSSCENE_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/diagramsceneconstants.h b/src/libs/modelinglib/qmt/diagram_scene/diagramsceneconstants.h
index 01d6256110..6f7d0a89e2 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/diagramsceneconstants.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/diagramsceneconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSCENECONSTANTS_H
-#define QMT_DIAGRAMSCENECONSTANTS_H
+#pragma once
 
 namespace qmt {
 
@@ -45,5 +44,3 @@ const double CUSTOM_ICON_MINIMUM_AUTO_WIDTH = 40.0; // must be n * 2 * RASTER_WI
 const double CUSTOM_ICON_MINIMUM_AUTO_HEIGHT = 40.0; // must be n * 2 * RASTER_HEIGHT
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMSCENECONSTANTS_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodel.h b/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodel.h
index 16b6ecdda9..1b616710cf 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodel.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSCENEMODEL_H
-#define QMT_DIAGRAMSCENEMODEL_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -184,5 +183,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMSCENEMODEL_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodelitemvisitors.h b/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodelitemvisitors.h
index 40c460e447..138f087481 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodelitemvisitors.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/diagramscenemodelitemvisitors.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSCENEMODELITEMVISITORS_H
-#define QMT_DIAGRAMSCENEMODELITEMVISITORS_H
+#pragma once
 
 #include "diagramscenemodel.h"
 
@@ -85,5 +84,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMSCENEMODELITEMVISITORS_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/annotationitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/annotationitem.h
index 12bff51a35..29e16224ec 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/annotationitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/annotationitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ANNOTATIONITEM_H
-#define QMT_ANNOTATIONITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -111,5 +110,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_ANNOTATIONITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/associationitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/associationitem.h
index 9b2966d74f..ad076eee59 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/associationitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/associationitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSASSOCIATIONITEM_H
-#define QMT_GRAPHICSASSOCIATIONITEM_H
+#pragma once
 
 #include "relationitem.h"
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSASSOCIATIONITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/boundaryitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/boundaryitem.h
index f00ddfba9b..b6b3380beb 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/boundaryitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/boundaryitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_BOUNDARYITEM_H
-#define QMT_BOUNDARYITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -110,5 +109,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_BOUNDARYITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/classitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/classitem.h
index 1e0df2a451..c4312a313c 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/classitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/classitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSCLASSITEM_H
-#define QMT_GRAPHICSCLASSITEM_H
+#pragma once
 
 #include "objectitem.h"
 
@@ -93,5 +92,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSCLASSITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/componentitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/componentitem.h
index d0b294ba3b..1b524247f3 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/componentitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/componentitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSCOMPONENTITEM_H
-#define QMT_GRAPHICSCOMPONENTITEM_H
+#pragma once
 
 #include "objectitem.h"
 
@@ -79,5 +78,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSCOMPONENTITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/diagramitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/diagramitem.h
index 0d3596b9ef..33919920a6 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/diagramitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/diagramitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSDIAGRAMITEM_H
-#define QMT_GRAPHICSDIAGRAMITEM_H
+#pragma once
 
 #include "objectitem.h"
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSDIAGRAMITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/itemitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/itemitem.h
index 0c64c1d333..49a3c2fc58 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/itemitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/itemitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ITEMITEM_H
-#define QMT_ITEMITEM_H
+#pragma once
 
 #include "objectitem.h"
 
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_ITEMITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/objectitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/objectitem.h
index 6d8901b4c8..4560a6fbbb 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/objectitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/objectitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_OBJECTITEM_H
-#define QMT_OBJECTITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -175,5 +174,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_OBJECTITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/packageitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/packageitem.h
index 99f6587cba..c08add8368 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/packageitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/packageitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSPACKAGEITEM_H
-#define QMT_GRAPHICSPACKAGEITEM_H
+#pragma once
 
 #include "objectitem.h"
 
@@ -76,5 +75,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSPACKAGEITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/relationitem.h b/src/libs/modelinglib/qmt/diagram_scene/items/relationitem.h
index d81470a759..983d480fbc 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/relationitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/relationitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSRELATIONITEM_H
-#define QMT_GRAPHICSRELATIONITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 #include "qmt/diagram_scene/capabilities/moveable.h"
@@ -109,5 +108,3 @@ protected:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSRELATIONITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/items/stereotypedisplayvisitor.h b/src/libs/modelinglib/qmt/diagram_scene/items/stereotypedisplayvisitor.h
index 4d01efddfe..cac65534d2 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/items/stereotypedisplayvisitor.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/items/stereotypedisplayvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STEREOTYPEDISPLAYVISITOR_H
-#define QMT_STEREOTYPEDISPLAYVISITOR_H
+#pragma once
 
 #include "qmt/diagram_controller/dvoidvisitor.h"
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STEREOTYPEDISPLAYVISITOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/latchcontroller.h b/src/libs/modelinglib/qmt/diagram_scene/latchcontroller.h
index c478ce0faa..fc91764d2f 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/latchcontroller.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/latchcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_LATCHCONTROLLER_H
-#define QMT_LATCHCONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -80,5 +79,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_LATCHCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/alignbuttonsitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/alignbuttonsitem.h
index 14144170b0..96a48f3d8a 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/alignbuttonsitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/alignbuttonsitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ALIGNBUTTONSITEM_H
-#define QMT_ALIGNBUTTONSITEM_H
+#pragma once
 
 #include "qmt/diagram_scene/capabilities/alignable.h"
 
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_ALIGNBUTTONSITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/alignlineitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/alignlineitem.h
index 1d8c240ea3..a630efc2b7 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/alignlineitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/alignlineitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ALIGNLINEITEM_H
-#define QMT_ALIGNLINEITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -54,5 +53,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_ALIGNLINEITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/arrowitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/arrowitem.h
index c10b2817a3..1db2c532cd 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/arrowitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/arrowitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSARROWITEM_H
-#define QMT_GRAPHICSARROWITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -101,5 +100,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSARROWITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/contextlabelitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/contextlabelitem.h
index 3f85103642..3bbce88073 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/contextlabelitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/contextlabelitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CONTEXTLABELITEM_H
-#define QMT_CONTEXTLABELITEM_H
+#pragma once
 
 #include <QGraphicsSimpleTextItem>
 
@@ -49,5 +48,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CONTEXTLABELITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/customiconitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/customiconitem.h
index ebdbbaea97..a1280f45e6 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/customiconitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/customiconitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CUSTOMICONITEM_H
-#define QMT_CUSTOMICONITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CUSTOMICONITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/editabletextitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/editabletextitem.h
index 488058e9f1..b3e93ecd1b 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/editabletextitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/editabletextitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_EDITABLETEXTITEM_H
-#define QMT_EDITABLETEXTITEM_H
+#pragma once
 
 #include <QGraphicsTextItem>
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_EDITABLETEXTITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/pathselectionitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/pathselectionitem.h
index 04e112949d..b38688e2a0 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/pathselectionitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/pathselectionitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSPATHSELECTIONITEM_H
-#define QMT_GRAPHICSPATHSELECTIONITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSPATHSELECTIONITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/rectangularselectionitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/rectangularselectionitem.h
index b07e886de8..bb82cc4460 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/rectangularselectionitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/rectangularselectionitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_RECTENGULARSELECTIONITEM_H
-#define QMT_RECTENGULARSELECTIONITEM_H
+#pragma once
 
 #include <QGraphicsItem>
 #include <QVector>
@@ -114,5 +113,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_RECTENGULARSELECTIONITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/relationstarter.h b/src/libs/modelinglib/qmt/diagram_scene/parts/relationstarter.h
index d345108b1d..cbf69e9244 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/relationstarter.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/relationstarter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSRELATIONSTARTER_H
-#define QMT_GRAPHICSRELATIONSTARTER_H
+#pragma once
 
 #include <QGraphicsRectItem>
 
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSRELATIONSTARTER_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/stereotypesitem.h b/src/libs/modelinglib/qmt/diagram_scene/parts/stereotypesitem.h
index 2e4868024f..bfb5808261 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/stereotypesitem.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/stereotypesitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GRAPHICSSTEREOTYPESITEM_H
-#define QMT_GRAPHICSSTEREOTYPESITEM_H
+#pragma once
 
 #include <QGraphicsSimpleTextItem>
 #include <QList>
@@ -43,5 +42,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_GRAPHICSSTEREOTYPESITEM_H
diff --git a/src/libs/modelinglib/qmt/diagram_scene/parts/templateparameterbox.h b/src/libs/modelinglib/qmt/diagram_scene/parts/templateparameterbox.h
index b22009193c..63349f8ab8 100644
--- a/src/libs/modelinglib/qmt/diagram_scene/parts/templateparameterbox.h
+++ b/src/libs/modelinglib/qmt/diagram_scene/parts/templateparameterbox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TEMPLATEPARAMETERBOX_H
-#define QMT_TEMPLATEPARAMETERBOX_H
+#pragma once
 
 #include <QGraphicsRectItem>
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_TEMPLATEPARAMETERBOX_H
diff --git a/src/libs/modelinglib/qmt/diagram_ui/diagram_mime_types.h b/src/libs/modelinglib/qmt/diagram_ui/diagram_mime_types.h
index b8df13c86d..5926f07ba1 100644
--- a/src/libs/modelinglib/qmt/diagram_ui/diagram_mime_types.h
+++ b/src/libs/modelinglib/qmt/diagram_ui/diagram_mime_types.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAM_MIME_TYPES_H
-#define QMT_DIAGRAM_MIME_TYPES_H
+#pragma once
 
 namespace qmt {
 
@@ -41,5 +40,3 @@ static const char ELEMENT_TYPE_ANNOTATION[] = "annotation";
 static const char ELEMENT_TYPE_BOUNDARY[] = "boundary";
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAM_MIME_TYPES_H
diff --git a/src/libs/modelinglib/qmt/diagram_ui/diagramsmanager.h b/src/libs/modelinglib/qmt/diagram_ui/diagramsmanager.h
index df7a57fbd9..f9af7636a0 100644
--- a/src/libs/modelinglib/qmt/diagram_ui/diagramsmanager.h
+++ b/src/libs/modelinglib/qmt/diagram_ui/diagramsmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSMANAGER_H
-#define QMT_DIAGRAMSMANAGER_H
+#pragma once
 
 #include <QObject>
 
@@ -94,5 +93,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMSMANAGER_H
diff --git a/src/libs/modelinglib/qmt/diagram_ui/diagramsviewinterface.h b/src/libs/modelinglib/qmt/diagram_ui/diagramsviewinterface.h
index afa95b5d8f..9aacb765d5 100644
--- a/src/libs/modelinglib/qmt/diagram_ui/diagramsviewinterface.h
+++ b/src/libs/modelinglib/qmt/diagram_ui/diagramsviewinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSVIEWINTERFACE_H
-#define QMT_DIAGRAMSVIEWINTERFACE_H
+#pragma once
 
 namespace qmt {
 
@@ -43,5 +42,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMSVIEWINTERFACE_H
diff --git a/src/libs/modelinglib/qmt/diagram_ui/sceneinspector.h b/src/libs/modelinglib/qmt/diagram_ui/sceneinspector.h
index f42969b5a0..9cd964a6d9 100644
--- a/src/libs/modelinglib/qmt/diagram_ui/sceneinspector.h
+++ b/src/libs/modelinglib/qmt/diagram_ui/sceneinspector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SCENEINSPECTOR_H
-#define QMT_SCENEINSPECTOR_H
+#pragma once
 
 #include <QObject>
 #include "qmt/tasks/isceneinspector.h"
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SCENEINSPECTOR_H
diff --git a/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramsview.h b/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramsview.h
index e797150dcc..6913957b66 100644
--- a/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramsview.h
+++ b/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramsview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSVIEW_H
-#define QMT_DIAGRAMSVIEW_H
+#pragma once
 
 #include <QTabWidget>
 
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // DIAGRAMSVIEW_H
diff --git a/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.h b/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.h
index ee0eb2dfc1..3ddc1951b1 100644
--- a/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.h
+++ b/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMVIEW_H
-#define QMT_DIAGRAMVIEW_H
+#pragma once
 
 #include <QGraphicsView>
 #include "qmt/infrastructure/qmt_global.h"
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMVIEW_H
diff --git a/src/libs/modelinglib/qmt/diagram_widgets_ui/stackeddiagramsview.h b/src/libs/modelinglib/qmt/diagram_widgets_ui/stackeddiagramsview.h
index 2b66884f08..d4b9eb1b3f 100644
--- a/src/libs/modelinglib/qmt/diagram_widgets_ui/stackeddiagramsview.h
+++ b/src/libs/modelinglib/qmt/diagram_widgets_ui/stackeddiagramsview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STACKEDDIAGRAMSVIEW_H
-#define QMT_STACKEDDIAGRAMSVIEW_H
+#pragma once
 
 #include <QStackedWidget>
 
@@ -73,5 +72,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STACKEDDIAGRAMSVIEW_H
diff --git a/src/libs/modelinglib/qmt/document_controller/documentcontroller.h b/src/libs/modelinglib/qmt/document_controller/documentcontroller.h
index 2c04e1ae50..d9a253773f 100644
--- a/src/libs/modelinglib/qmt/document_controller/documentcontroller.h
+++ b/src/libs/modelinglib/qmt/document_controller/documentcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DOCUMENTCONTROLLER_H
-#define QMT_DOCUMENTCONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -124,5 +123,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DOCUMENTCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/contextmenuaction.h b/src/libs/modelinglib/qmt/infrastructure/contextmenuaction.h
index de056f8b30..ea6f2cd504 100644
--- a/src/libs/modelinglib/qmt/infrastructure/contextmenuaction.h
+++ b/src/libs/modelinglib/qmt/infrastructure/contextmenuaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CONTEXTMENUACTION_H
-#define QMT_CONTEXTMENUACTION_H
+#pragma once
 
 #include <QAction>
 
@@ -45,5 +44,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CONTEXTMENUACTION_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/exceptions.h b/src/libs/modelinglib/qmt/infrastructure/exceptions.h
index 16824f10de..cbf4b86856 100644
--- a/src/libs/modelinglib/qmt/infrastructure/exceptions.h
+++ b/src/libs/modelinglib/qmt/infrastructure/exceptions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_EXCEPTIONS_H
-#define QMT_EXCEPTIONS_H
+#pragma once
 
 #include "qmt_global.h"
 
@@ -55,5 +54,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_EXCEPTIONS_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/geometryutilities.h b/src/libs/modelinglib/qmt/infrastructure/geometryutilities.h
index 003556a791..c0062aa297 100644
--- a/src/libs/modelinglib/qmt/infrastructure/geometryutilities.h
+++ b/src/libs/modelinglib/qmt/infrastructure/geometryutilities.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GEOMETRYUTILITIES_H
-#define QMT_GEOMETRYUTILITIES_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -69,5 +68,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_GEOMETRYUTILITIES_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/handle.h b/src/libs/modelinglib/qmt/infrastructure/handle.h
index d94fa160af..261f8c7460 100644
--- a/src/libs/modelinglib/qmt/infrastructure/handle.h
+++ b/src/libs/modelinglib/qmt/infrastructure/handle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_HANDLE_H
-#define QMT_HANDLE_H
+#pragma once
 
 #include "uid.h"
 #include "qmtassert.h"
@@ -99,5 +98,3 @@ Handle<T> handle_dynamic_cast(const Handle<U> &handle)
 }
 
 } // namespace qmt
-
-#endif // QMT_HANDLE_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/handles.h b/src/libs/modelinglib/qmt/infrastructure/handles.h
index b7dd70f25c..d0e4c83ea5 100644
--- a/src/libs/modelinglib/qmt/infrastructure/handles.h
+++ b/src/libs/modelinglib/qmt/infrastructure/handles.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_HANDLES_H
-#define QMT_HANDLES_H
+#pragma once
 
 #include "handle.h"
 #include "qmt/infrastructure/qmtassert.h"
@@ -240,5 +239,3 @@ template<typename T>
 bool operator!=(const Handles<T> &lhs, const Handles<T> &rhs) { return !(lhs == rhs); }
 
 } // namespace qmt
-
-#endif // QMT_HANDLES_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/ioexceptions.h b/src/libs/modelinglib/qmt/infrastructure/ioexceptions.h
index 2a5d56e5e9..cba138b056 100644
--- a/src/libs/modelinglib/qmt/infrastructure/ioexceptions.h
+++ b/src/libs/modelinglib/qmt/infrastructure/ioexceptions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_IOEXCEPTIONS_H
-#define QMT_IOEXCEPTIONS_H
+#pragma once
 
 #include "exceptions.h"
 
@@ -87,5 +86,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_IOEXCEPTIONS_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h b/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h
index 94007e7a5c..dad4f9a596 100644
--- a/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h
+++ b/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QCOMPRESSEDDEVICE_H
-#define QCOMPRESSEDDEVICE_H
+#pragma once
 
 #include <QIODevice>
 #include <QByteArray>
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QCOMPRESSEDDEVICE_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/qmt_global.h b/src/libs/modelinglib/qmt/infrastructure/qmt_global.h
index 3899eed807..d96df8d624 100644
--- a/src/libs/modelinglib/qmt/infrastructure/qmt_global.h
+++ b/src/libs/modelinglib/qmt/infrastructure/qmt_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_GLOBAL_H
-#define QMT_GLOBAL_H
+#pragma once
 
 #include <QtCore/QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define QMT_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMT_GLOBAL_H
-
diff --git a/src/libs/modelinglib/qmt/infrastructure/qmtassert.h b/src/libs/modelinglib/qmt/infrastructure/qmtassert.h
index 7580a044fb..c87076be25 100644
--- a/src/libs/modelinglib/qmt/infrastructure/qmtassert.h
+++ b/src/libs/modelinglib/qmt/infrastructure/qmtassert.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_QMTASSERT_H
-#define QMT_QMTASSERT_H
+#pragma once
 
 #include "utils/qtcassert.h"
 
@@ -32,5 +31,3 @@
 #define QMT_CHECK(condition) QTC_CHECK(condition)
 // TODO implement logging of where and what
 #define QMT_CHECK_X(condition, where, what) QTC_CHECK(condition)
-
-#endif // QMT_QMTASSERT_H
diff --git a/src/libs/modelinglib/qmt/infrastructure/uid.h b/src/libs/modelinglib/qmt/infrastructure/uid.h
index 30b99a83a2..757f5c11b0 100644
--- a/src/libs/modelinglib/qmt/infrastructure/uid.h
+++ b/src/libs/modelinglib/qmt/infrastructure/uid.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_UID_H
-#define QMT_UID_H
+#pragma once
 
 #include "qmt_global.h"
 
@@ -87,5 +86,3 @@ inline QDataStream &operator>>(QDataStream &stream, Uid &uid)
 } // namespace qmt
 
 Q_DECLARE_METATYPE(qmt::Uid)
-
-#endif // QMT_UID_H
diff --git a/src/libs/modelinglib/qmt/model/massociation.h b/src/libs/modelinglib/qmt/model/massociation.h
index 1d4ebc8a21..82f6bdf0c6 100644
--- a/src/libs/modelinglib/qmt/model/massociation.h
+++ b/src/libs/modelinglib/qmt/model/massociation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MASSOCIATION_H
-#define QMT_MASSOCIATION_H
+#pragma once
 
 #include "mrelation.h"
 #include "qmt/infrastructure/handle.h"
@@ -95,5 +94,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MASSOCIATION_H
diff --git a/src/libs/modelinglib/qmt/model/mcanvasdiagram.h b/src/libs/modelinglib/qmt/model/mcanvasdiagram.h
index 7f54c9d2c8..303be48144 100644
--- a/src/libs/modelinglib/qmt/model/mcanvasdiagram.h
+++ b/src/libs/modelinglib/qmt/model/mcanvasdiagram.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCANVASDIAGRAM_H
-#define QMT_MCANVASDIAGRAM_H
+#pragma once
 
 #include "mdiagram.h"
 
@@ -41,5 +40,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MCANVASDIAGRAM_H
diff --git a/src/libs/modelinglib/qmt/model/mclass.h b/src/libs/modelinglib/qmt/model/mclass.h
index a37b30b516..d026172685 100644
--- a/src/libs/modelinglib/qmt/model/mclass.h
+++ b/src/libs/modelinglib/qmt/model/mclass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCLASS_H
-#define QMT_MCLASS_H
+#pragma once
 
 #include "mobject.h"
 #include "mclassmember.h"
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MCLASS_H
diff --git a/src/libs/modelinglib/qmt/model/mclassmember.h b/src/libs/modelinglib/qmt/model/mclassmember.h
index cdba8f5a5a..99acb8d2ae 100644
--- a/src/libs/modelinglib/qmt/model/mclassmember.h
+++ b/src/libs/modelinglib/qmt/model/mclassmember.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCLASSMEMBER_H
-#define QMT_MCLASSMEMBER_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -104,5 +103,3 @@ private:
 bool operator==(const MClassMember &lhs, const MClassMember &rhs);
 
 } // namespace qmt
-
-#endif // QMT_MCLASSMEMBER_H
diff --git a/src/libs/modelinglib/qmt/model/mcomponent.h b/src/libs/modelinglib/qmt/model/mcomponent.h
index 4fde25a218..b0580dde70 100644
--- a/src/libs/modelinglib/qmt/model/mcomponent.h
+++ b/src/libs/modelinglib/qmt/model/mcomponent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCOMPONENT_H
-#define QMT_MCOMPONENT_H
+#pragma once
 
 #include "mobject.h"
 
@@ -41,5 +40,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MCOMPONENT_H
diff --git a/src/libs/modelinglib/qmt/model/mconstvisitor.h b/src/libs/modelinglib/qmt/model/mconstvisitor.h
index 8bfd9c39fb..fcfa9665fc 100644
--- a/src/libs/modelinglib/qmt/model/mconstvisitor.h
+++ b/src/libs/modelinglib/qmt/model/mconstvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCONSTVISITOR_H
-#define QMT_MCONSTVISITOR_H
+#pragma once
 
 namespace qmt {
 
@@ -63,5 +62,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MCONSTVISITOR_H
diff --git a/src/libs/modelinglib/qmt/model/mdependency.h b/src/libs/modelinglib/qmt/model/mdependency.h
index 27acfe696d..f2754c4f9c 100644
--- a/src/libs/modelinglib/qmt/model/mdependency.h
+++ b/src/libs/modelinglib/qmt/model/mdependency.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MDEPENDENCY_H
-#define QMT_MDEPENDENCY_H
+#pragma once
 
 #include "mrelation.h"
 
@@ -62,5 +61,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MDEPENDENCY_H
diff --git a/src/libs/modelinglib/qmt/model/mdiagram.h b/src/libs/modelinglib/qmt/model/mdiagram.h
index 47ea04abf9..41f54cfec2 100644
--- a/src/libs/modelinglib/qmt/model/mdiagram.h
+++ b/src/libs/modelinglib/qmt/model/mdiagram.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MDIAGRAM_H
-#define QMT_MDIAGRAM_H
+#pragma once
 
 #include "mobject.h"
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MDIAGRAM_H
diff --git a/src/libs/modelinglib/qmt/model/melement.h b/src/libs/modelinglib/qmt/model/melement.h
index 864bf3464e..b83b5bd980 100644
--- a/src/libs/modelinglib/qmt/model/melement.h
+++ b/src/libs/modelinglib/qmt/model/melement.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MELEMENT_H
-#define QMT_MELEMENT_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -91,5 +90,3 @@ private:
 Q_DECLARE_OPERATORS_FOR_FLAGS(MElement::Flags)
 
 } // namespace qmt
-
-#endif // QMT_MELEMENT_H
diff --git a/src/libs/modelinglib/qmt/model/minheritance.h b/src/libs/modelinglib/qmt/model/minheritance.h
index e1be05e557..2154d4f4de 100644
--- a/src/libs/modelinglib/qmt/model/minheritance.h
+++ b/src/libs/modelinglib/qmt/model/minheritance.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MINHERITANCE_H
-#define QMT_MINHERITANCE_H
+#pragma once
 
 #include "mrelation.h"
 #include "qmt/infrastructure/handle.h"
@@ -50,5 +49,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MINHERITANCE_H
diff --git a/src/libs/modelinglib/qmt/model/mitem.h b/src/libs/modelinglib/qmt/model/mitem.h
index 940c4fadfb..ebedea5efe 100644
--- a/src/libs/modelinglib/qmt/model/mitem.h
+++ b/src/libs/modelinglib/qmt/model/mitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MITEM_H
-#define QMT_MITEM_H
+#pragma once
 
 #include "mobject.h"
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MITEM_H
diff --git a/src/libs/modelinglib/qmt/model/mobject.h b/src/libs/modelinglib/qmt/model/mobject.h
index e3478b9e7b..62e3d8b569 100644
--- a/src/libs/modelinglib/qmt/model/mobject.h
+++ b/src/libs/modelinglib/qmt/model/mobject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MOBJECT_H
-#define QMT_MOBJECT_H
+#pragma once
 
 #include "melement.h"
 #include "qmt/infrastructure/handles.h"
@@ -76,5 +75,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MOBJECT_H
diff --git a/src/libs/modelinglib/qmt/model/mpackage.h b/src/libs/modelinglib/qmt/model/mpackage.h
index 721231a6de..78bf459936 100644
--- a/src/libs/modelinglib/qmt/model/mpackage.h
+++ b/src/libs/modelinglib/qmt/model/mpackage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MPACKAGE_H
-#define QMT_MPACKAGE_H
+#pragma once
 
 #include "mobject.h"
 #include "qmt/infrastructure/handles.h"
@@ -42,5 +41,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MPACKAGE_H
diff --git a/src/libs/modelinglib/qmt/model/mrelation.h b/src/libs/modelinglib/qmt/model/mrelation.h
index 3d7fc504ee..85f6cee6df 100644
--- a/src/libs/modelinglib/qmt/model/mrelation.h
+++ b/src/libs/modelinglib/qmt/model/mrelation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MRELATION_H
-#define QMT_MRELATION_H
+#pragma once
 
 #include "melement.h"
 
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MRELATION_H
diff --git a/src/libs/modelinglib/qmt/model/msourceexpansion.h b/src/libs/modelinglib/qmt/model/msourceexpansion.h
index 049da96ef7..eb7c1bc3a5 100644
--- a/src/libs/modelinglib/qmt/model/msourceexpansion.h
+++ b/src/libs/modelinglib/qmt/model/msourceexpansion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MSOURCEEXPANSION_H
-#define QMT_MSOURCEEXPANSION_H
+#pragma once
 
 #include "melement.h"
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MSOURCEEXPANSION_H
diff --git a/src/libs/modelinglib/qmt/model/mvisitor.h b/src/libs/modelinglib/qmt/model/mvisitor.h
index 4b034bef38..bce52be8d0 100644
--- a/src/libs/modelinglib/qmt/model/mvisitor.h
+++ b/src/libs/modelinglib/qmt/model/mvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MVISITOR_H
-#define QMT_MVISITOR_H
+#pragma once
 
 namespace qmt {
 
@@ -63,5 +62,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MVISITOR_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mchildrenvisitor.h b/src/libs/modelinglib/qmt/model_controller/mchildrenvisitor.h
index 79430540fa..406febde8e 100644
--- a/src/libs/modelinglib/qmt/model_controller/mchildrenvisitor.h
+++ b/src/libs/modelinglib/qmt/model_controller/mchildrenvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCHILDRENVISITOR_H
-#define QMT_MCHILDRENVISITOR_H
+#pragma once
 
 #include "qmt/model/mvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -49,5 +48,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MCHILDRENVISITOR_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mclonevisitor.h b/src/libs/modelinglib/qmt/model_controller/mclonevisitor.h
index 20b916f5a7..4d97acdd4f 100644
--- a/src/libs/modelinglib/qmt/model_controller/mclonevisitor.h
+++ b/src/libs/modelinglib/qmt/model_controller/mclonevisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CLONEVISITOR_H
-#define QMT_CLONEVISITOR_H
+#pragma once
 
 #include "qmt/model/mconstvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CLONEVISITOR_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mcontainer.h b/src/libs/modelinglib/qmt/model_controller/mcontainer.h
index 1d70ba9980..22131f84d4 100644
--- a/src/libs/modelinglib/qmt/model_controller/mcontainer.h
+++ b/src/libs/modelinglib/qmt/model_controller/mcontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MCONTAINER_H
-#define QMT_MCONTAINER_H
+#pragma once
 
 #include "qmt/controller/container.h"
 #include "qmt/model/melement.h"
@@ -36,5 +35,3 @@ class QMT_EXPORT MContainer : public Container<MElement>
 };
 
 } // namespace qmt
-
-#endif // QMT_MCONTAINER_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mflatassignmentvisitor.h b/src/libs/modelinglib/qmt/model_controller/mflatassignmentvisitor.h
index 660d7cdd7f..49d696fd92 100644
--- a/src/libs/modelinglib/qmt/model_controller/mflatassignmentvisitor.h
+++ b/src/libs/modelinglib/qmt/model_controller/mflatassignmentvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MFLATASSIGNMENTVISITOR_H
-#define QMT_MFLATASSIGNMENTVISITOR_H
+#pragma once
 
 #include "qmt/model/mconstvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MFLATASSIGNMENTVISITOR_H
diff --git a/src/libs/modelinglib/qmt/model_controller/modelcontroller.h b/src/libs/modelinglib/qmt/model_controller/modelcontroller.h
index 8b9f0fdf86..ccc53078a5 100644
--- a/src/libs/modelinglib/qmt/model_controller/modelcontroller.h
+++ b/src/libs/modelinglib/qmt/model_controller/modelcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MODELCONTROLLER_H
-#define QMT_MODELCONTROLLER_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -162,5 +161,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MODELCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mreferences.h b/src/libs/modelinglib/qmt/model_controller/mreferences.h
index 9a3e8e4986..ad61d1e181 100644
--- a/src/libs/modelinglib/qmt/model_controller/mreferences.h
+++ b/src/libs/modelinglib/qmt/model_controller/mreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MREFERENCES_H
-#define QMT_MREFERENCES_H
+#pragma once
 
 #include "qmt/controller/references.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -38,5 +37,3 @@ class QMT_EXPORT MReferences : public References<MElement>
 };
 
 } // namespace qmt
-
-#endif // QMT_MREFERENCES_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mselection.h b/src/libs/modelinglib/qmt/model_controller/mselection.h
index f827023d10..3d0ea069f2 100644
--- a/src/libs/modelinglib/qmt/model_controller/mselection.h
+++ b/src/libs/modelinglib/qmt/model_controller/mselection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MSELECTION_H
-#define QMT_MSELECTION_H
+#pragma once
 
 #include "qmt/controller/selection.h"
 
@@ -35,5 +34,3 @@ class QMT_EXPORT MSelection : public Selection
 };
 
 } // namespace qmt
-
-#endif // QMT_MSELECTION_H
diff --git a/src/libs/modelinglib/qmt/model_controller/mvoidvisitor.h b/src/libs/modelinglib/qmt/model_controller/mvoidvisitor.h
index a7e75d5329..34404adbb2 100644
--- a/src/libs/modelinglib/qmt/model_controller/mvoidvisitor.h
+++ b/src/libs/modelinglib/qmt/model_controller/mvoidvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MVOIDVISITOR_H
-#define QMT_MVOIDVISITOR_H
+#pragma once
 
 #include "qmt/model/mvisitor.h"
 #include "qmt/model/mconstvisitor.h"
@@ -67,5 +66,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MVOIDVISITOR_H
diff --git a/src/libs/modelinglib/qmt/model_ui/modeltreeviewinterface.h b/src/libs/modelinglib/qmt/model_ui/modeltreeviewinterface.h
index 9bbf44d8dd..8e781f64db 100644
--- a/src/libs/modelinglib/qmt/model_ui/modeltreeviewinterface.h
+++ b/src/libs/modelinglib/qmt/model_ui/modeltreeviewinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MODELTREEVIEWINTERFACE_H
-#define QMT_MODELTREEVIEWINTERFACE_H
+#pragma once
 
 #include <QList>
 
@@ -44,5 +43,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_MODELTREEVIEWINTERFACE_H
diff --git a/src/libs/modelinglib/qmt/model_ui/sortedtreemodel.h b/src/libs/modelinglib/qmt/model_ui/sortedtreemodel.h
index ddef6d11e2..fed3721768 100644
--- a/src/libs/modelinglib/qmt/model_ui/sortedtreemodel.h
+++ b/src/libs/modelinglib/qmt/model_ui/sortedtreemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SORTEDTREEMODEL_H
-#define QMT_SORTEDTREEMODEL_H
+#pragma once
 
 #include <QSortFilterProxyModel>
 #include "qmt/infrastructure/qmt_global.h"
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SORTEDTREEMODEL_H
diff --git a/src/libs/modelinglib/qmt/model_ui/stereotypescontroller.h b/src/libs/modelinglib/qmt/model_ui/stereotypescontroller.h
index 51e47ee7bc..e7034640df 100644
--- a/src/libs/modelinglib/qmt/model_ui/stereotypescontroller.h
+++ b/src/libs/modelinglib/qmt/model_ui/stereotypescontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STEREOTYPESCONTROLLER_H
-#define QMT_STEREOTYPESCONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -51,5 +50,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_STEREOTYPESCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/model_ui/treemodel.h b/src/libs/modelinglib/qmt/model_ui/treemodel.h
index 0c987424e1..877a4a0fd5 100644
--- a/src/libs/modelinglib/qmt/model_ui/treemodel.h
+++ b/src/libs/modelinglib/qmt/model_ui/treemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TREEMODEL_H
-#define QMT_TREEMODEL_H
+#pragma once
 
 #include <QStandardItemModel>
 #include "qmt/infrastructure/qmt_global.h"
@@ -145,5 +144,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_TREEMODEL_H
diff --git a/src/libs/modelinglib/qmt/model_ui/treemodelmanager.h b/src/libs/modelinglib/qmt/model_ui/treemodelmanager.h
index aefa738366..dfb604cd98 100644
--- a/src/libs/modelinglib/qmt/model_ui/treemodelmanager.h
+++ b/src/libs/modelinglib/qmt/model_ui/treemodelmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TREEMODELMANAGER_H
-#define QMT_TREEMODELMANAGER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_TREEMODELMANAGER_H
diff --git a/src/libs/modelinglib/qmt/model_widgets_ui/classmembersedit.h b/src/libs/modelinglib/qmt/model_widgets_ui/classmembersedit.h
index 2fe340e72f..ca23702742 100644
--- a/src/libs/modelinglib/qmt/model_widgets_ui/classmembersedit.h
+++ b/src/libs/modelinglib/qmt/model_widgets_ui/classmembersedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_CLASSMEMBERSEDIT_H
-#define QMT_CLASSMEMBERSEDIT_H
+#pragma once
 
 #include <QPlainTextEdit>
 #include "qmt/infrastructure/qmt_global.h"
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_CLASSMEMBERSEDIT_H
diff --git a/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.h b/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.h
index 094b6a1118..bb910bd635 100644
--- a/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.h
+++ b/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MODELTREEVIEW_H
-#define QMT_MODELTREEVIEW_H
+#pragma once
 
 #include <QTreeView>
 #include "qmt/infrastructure/qmt_global.h"
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_MODELTREEVIEW_H
diff --git a/src/libs/modelinglib/qmt/model_widgets_ui/palettebox.h b/src/libs/modelinglib/qmt/model_widgets_ui/palettebox.h
index b0fe0ed8a0..501b7ea758 100644
--- a/src/libs/modelinglib/qmt/model_widgets_ui/palettebox.h
+++ b/src/libs/modelinglib/qmt/model_widgets_ui/palettebox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_PALETTEBOX_H
-#define QMT_PALETTEBOX_H
+#pragma once
 
 #include <QWidget>
 #include "qmt/infrastructure/qmt_global.h"
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_PALETTEBOX_H
diff --git a/src/libs/modelinglib/qmt/model_widgets_ui/propertiesview.h b/src/libs/modelinglib/qmt/model_widgets_ui/propertiesview.h
index a4ea9b4d07..39c1f817a1 100644
--- a/src/libs/modelinglib/qmt/model_widgets_ui/propertiesview.h
+++ b/src/libs/modelinglib/qmt/model_widgets_ui/propertiesview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_PROPERTIESVIEW_H
-#define QMT_PROPERTIESVIEW_H
+#pragma once
 
 #include <QObject>
 
@@ -130,5 +129,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_PROPERTIESVIEW_H
diff --git a/src/libs/modelinglib/qmt/model_widgets_ui/propertiesviewmview.h b/src/libs/modelinglib/qmt/model_widgets_ui/propertiesviewmview.h
index b5daf798de..a3fa23fb0d 100644
--- a/src/libs/modelinglib/qmt/model_widgets_ui/propertiesviewmview.h
+++ b/src/libs/modelinglib/qmt/model_widgets_ui/propertiesviewmview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_PROPERTIESVIEWMVIEW_H
-#define QMT_PROPERTIESVIEWMVIEW_H
+#pragma once
 
 #include <QObject>
 
@@ -248,5 +247,3 @@ protected:
 };
 
 } // namespace qmt
-
-#endif // QMT_PROPERTIESVIEWMVIEW_H
diff --git a/src/libs/modelinglib/qmt/project/project.h b/src/libs/modelinglib/qmt/project/project.h
index 70dd4f6c4a..b135769d87 100644
--- a/src/libs/modelinglib/qmt/project/project.h
+++ b/src/libs/modelinglib/qmt/project/project.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_PROJECT_H
-#define QMT_PROJECT_H
+#pragma once
 
 #include "qmt/infrastructure/uid.h"
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_PROJECT_H
diff --git a/src/libs/modelinglib/qmt/project_controller/projectcontroller.h b/src/libs/modelinglib/qmt/project_controller/projectcontroller.h
index 26db1db74f..73daf2a2ac 100644
--- a/src/libs/modelinglib/qmt/project_controller/projectcontroller.h
+++ b/src/libs/modelinglib/qmt/project_controller/projectcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_PROJECTCONTROLLER_H
-#define QMT_PROJECTCONTROLLER_H
+#pragma once
 
 #include "qmt/infrastructure/exceptions.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // PROJECTCONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/serializer/diagramserializer.h b/src/libs/modelinglib/qmt/serializer/diagramserializer.h
index 60ac5619a6..85deb24ea2 100644
--- a/src/libs/modelinglib/qmt/serializer/diagramserializer.h
+++ b/src/libs/modelinglib/qmt/serializer/diagramserializer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSERIALIZER_H
-#define QMT_DIAGRAMSERIALIZER_H
+#pragma once
 
 #include "qmt/diagram/dannotation.h"
 #include "qmt/diagram/dobject.h"
@@ -41,5 +40,3 @@ QARK_SERIALIZE_ENUM(qmt::DClass::TemplateDisplay)
 QARK_SERIALIZE_ENUM(qmt::DAnnotation::VisualRole)
 
 } // namespace qark
-
-#endif // QMT_DIAGRAMSERIALIZER_H
diff --git a/src/libs/modelinglib/qmt/serializer/infrastructureserializer.h b/src/libs/modelinglib/qmt/serializer/infrastructureserializer.h
index ff20644f26..1814fb6a9d 100644
--- a/src/libs/modelinglib/qmt/serializer/infrastructureserializer.h
+++ b/src/libs/modelinglib/qmt/serializer/infrastructureserializer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_INFRASTRUCTURESERIALIZER_H
-#define QMT_INFRASTRUCTURESERIALIZER_H
+#pragma once
 
 #include "qmt/infrastructure/handle.h"
 #include "qmt/infrastructure/handles.h"
@@ -75,5 +74,3 @@ inline void serialize(Archive &archive, qmt::Handles<T> &handles)
 }
 
 } // namespace qark
-
-#endif // QMT_INFRASTRUCTURESERIALIZER_H
diff --git a/src/libs/modelinglib/qmt/serializer/modelserializer.h b/src/libs/modelinglib/qmt/serializer/modelserializer.h
index 8d7d9524c4..58e96768a9 100644
--- a/src/libs/modelinglib/qmt/serializer/modelserializer.h
+++ b/src/libs/modelinglib/qmt/serializer/modelserializer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_MODELSERIALIZER_H
-#define QMT_MODELSERIALIZER_H
+#pragma once
 
 #include "qmt/model/melement.h"
 #include "qmt/model/mclassmember.h"
@@ -42,5 +41,3 @@ QARK_SERIALIZE_ENUM(qmt::MDependency::Direction)
 QARK_SERIALIZE_ENUM(qmt::MAssociationEnd::Kind)
 
 } // namespace qark
-
-#endif // QMT_MODELSERIALIZER_H
diff --git a/src/libs/modelinglib/qmt/serializer/projectserializer.h b/src/libs/modelinglib/qmt/serializer/projectserializer.h
index b20180af98..4229b776bf 100644
--- a/src/libs/modelinglib/qmt/serializer/projectserializer.h
+++ b/src/libs/modelinglib/qmt/serializer/projectserializer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_PROJECTSERIALIZER_H
-#define QMT_PROJECTSERIALIZER_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_PROJECTSERIALIZER_H
diff --git a/src/libs/modelinglib/qmt/stereotype/iconshape.h b/src/libs/modelinglib/qmt/stereotype/iconshape.h
index 49b7a27bba..0efea797ff 100644
--- a/src/libs/modelinglib/qmt/stereotype/iconshape.h
+++ b/src/libs/modelinglib/qmt/stereotype/iconshape.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ICONSHAPE_H
-#define QMT_ICONSHAPE_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 #include <QSizeF>
@@ -72,5 +71,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_ICONSHAPE_H
diff --git a/src/libs/modelinglib/qmt/stereotype/shape.h b/src/libs/modelinglib/qmt/stereotype/shape.h
index 9cca553a33..467266b961 100644
--- a/src/libs/modelinglib/qmt/stereotype/shape.h
+++ b/src/libs/modelinglib/qmt/stereotype/shape.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SHAPE_H
-#define QMT_SHAPE_H
+#pragma once
 
 namespace qmt {
 
@@ -42,5 +41,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_SHAPE_H
diff --git a/src/libs/modelinglib/qmt/stereotype/shapepaintvisitor.h b/src/libs/modelinglib/qmt/stereotype/shapepaintvisitor.h
index 18552d85ae..67a90ee6ac 100644
--- a/src/libs/modelinglib/qmt/stereotype/shapepaintvisitor.h
+++ b/src/libs/modelinglib/qmt/stereotype/shapepaintvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SHAPEPAINTVISITOR_H
-#define QMT_SHAPEPAINTVISITOR_H
+#pragma once
 
 #include "shapevisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SHAPEPAINTVISITOR_H
diff --git a/src/libs/modelinglib/qmt/stereotype/shapes.h b/src/libs/modelinglib/qmt/stereotype/shapes.h
index c35bf95b27..88f4c6e392 100644
--- a/src/libs/modelinglib/qmt/stereotype/shapes.h
+++ b/src/libs/modelinglib/qmt/stereotype/shapes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SHAPES_H
-#define QMT_SHAPES_H
+#pragma once
 
 #include "shape.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -231,5 +230,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SHAPES_H
diff --git a/src/libs/modelinglib/qmt/stereotype/shapevalue.h b/src/libs/modelinglib/qmt/stereotype/shapevalue.h
index cb3f283a7c..4b2f09a1dc 100644
--- a/src/libs/modelinglib/qmt/stereotype/shapevalue.h
+++ b/src/libs/modelinglib/qmt/stereotype/shapevalue.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SHAPEVALUE_H
-#define QMT_SHAPEVALUE_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -141,5 +140,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_SHAPEVALUE_H
diff --git a/src/libs/modelinglib/qmt/stereotype/shapevisitor.h b/src/libs/modelinglib/qmt/stereotype/shapevisitor.h
index f068ddeb5b..6adbba12ba 100644
--- a/src/libs/modelinglib/qmt/stereotype/shapevisitor.h
+++ b/src/libs/modelinglib/qmt/stereotype/shapevisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_SHAPEVISITOR_H
-#define QMT_SHAPEVISITOR_H
+#pragma once
 
 namespace qmt {
 
@@ -65,5 +64,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_SHAPEVISITOR_H
diff --git a/src/libs/modelinglib/qmt/stereotype/stereotypecontroller.h b/src/libs/modelinglib/qmt/stereotype/stereotypecontroller.h
index f833499e2b..990c2ae8b4 100644
--- a/src/libs/modelinglib/qmt/stereotype/stereotypecontroller.h
+++ b/src/libs/modelinglib/qmt/stereotype/stereotypecontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STEREOTYPECONTROLLER_H
-#define QMT_STEREOTYPECONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STEREOTYPECONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/stereotype/stereotypeicon.h b/src/libs/modelinglib/qmt/stereotype/stereotypeicon.h
index 4b0eb0d0e1..354bd6f9ce 100644
--- a/src/libs/modelinglib/qmt/stereotype/stereotypeicon.h
+++ b/src/libs/modelinglib/qmt/stereotype/stereotypeicon.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STEREOTYPEICON_H
-#define QMT_STEREOTYPEICON_H
+#pragma once
 
 #include "iconshape.h"
 
@@ -117,5 +116,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STEREOTYPEICON_H
diff --git a/src/libs/modelinglib/qmt/stereotype/toolbar.h b/src/libs/modelinglib/qmt/stereotype/toolbar.h
index f5af53b31b..b7422f408d 100644
--- a/src/libs/modelinglib/qmt/stereotype/toolbar.h
+++ b/src/libs/modelinglib/qmt/stereotype/toolbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_TOOLBAR_H
-#define QMT_TOOLBAR_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -80,5 +79,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_TOOLBAR_H
diff --git a/src/libs/modelinglib/qmt/style/defaultstyle.h b/src/libs/modelinglib/qmt/style/defaultstyle.h
index 851a0c4191..89ec15fdaf 100644
--- a/src/libs/modelinglib/qmt/style/defaultstyle.h
+++ b/src/libs/modelinglib/qmt/style/defaultstyle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DEFAULTSTYLE_H
-#define QMT_DEFAULTSTYLE_H
+#pragma once
 
 #include "style.h"
 
@@ -38,5 +37,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_DEFAULTSTYLE_H
diff --git a/src/libs/modelinglib/qmt/style/defaultstyleengine.h b/src/libs/modelinglib/qmt/style/defaultstyleengine.h
index 3fe0933edc..792b9247a0 100644
--- a/src/libs/modelinglib/qmt/style/defaultstyleengine.h
+++ b/src/libs/modelinglib/qmt/style/defaultstyleengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DEFAULTSTYLEENGINE_H
-#define QMT_DEFAULTSTYLEENGINE_H
+#pragma once
 
 #include "styleengine.h"
 
@@ -91,5 +90,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DEFAULTSTYLEENGINE_H
diff --git a/src/libs/modelinglib/qmt/style/objectvisuals.h b/src/libs/modelinglib/qmt/style/objectvisuals.h
index b53e570675..715252befc 100644
--- a/src/libs/modelinglib/qmt/style/objectvisuals.h
+++ b/src/libs/modelinglib/qmt/style/objectvisuals.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_OBJECTVISUALS_H
-#define QMT_OBJECTVISUALS_H
+#pragma once
 
 #include "qmt/diagram/dobject.h"
 
@@ -64,5 +63,3 @@ bool operator==(const ObjectVisuals &lhs, const ObjectVisuals &rhs);
 uint qHash(const ObjectVisuals &objectVisuals);
 
 } // namespace qmt
-
-#endif // QMT_OBJECTVISUALS_H
diff --git a/src/libs/modelinglib/qmt/style/relationstarterstyle.h b/src/libs/modelinglib/qmt/style/relationstarterstyle.h
index fb39eda285..ed745c5776 100644
--- a/src/libs/modelinglib/qmt/style/relationstarterstyle.h
+++ b/src/libs/modelinglib/qmt/style/relationstarterstyle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_RELATIONSTARTERSTYLE_H
-#define QMT_RELATIONSTARTERSTYLE_H
+#pragma once
 
 #include "style.h"
 
@@ -38,5 +37,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_RELATIONSTARTERSTYLE_H
diff --git a/src/libs/modelinglib/qmt/style/style.h b/src/libs/modelinglib/qmt/style/style.h
index 8d67d8751e..9add43d26e 100644
--- a/src/libs/modelinglib/qmt/style/style.h
+++ b/src/libs/modelinglib/qmt/style/style.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STYLE_H
-#define QMT_STYLE_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -83,5 +82,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STYLE_H
diff --git a/src/libs/modelinglib/qmt/style/stylecontroller.h b/src/libs/modelinglib/qmt/style/stylecontroller.h
index d8525374e8..344409e941 100644
--- a/src/libs/modelinglib/qmt/style/stylecontroller.h
+++ b/src/libs/modelinglib/qmt/style/stylecontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STYLECONTROLLER_H
-#define QMT_STYLECONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STYLECONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/style/styledobject.h b/src/libs/modelinglib/qmt/style/styledobject.h
index 510729a3a3..26687065b7 100644
--- a/src/libs/modelinglib/qmt/style/styledobject.h
+++ b/src/libs/modelinglib/qmt/style/styledobject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STYLEDOBJECT_H
-#define QMT_STYLEDOBJECT_H
+#pragma once
 
 #include "objectvisuals.h"
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_ STYLEDOBJECT_H
diff --git a/src/libs/modelinglib/qmt/style/styledrelation.h b/src/libs/modelinglib/qmt/style/styledrelation.h
index 53a28d98ab..6811f3e3da 100644
--- a/src/libs/modelinglib/qmt/style/styledrelation.h
+++ b/src/libs/modelinglib/qmt/style/styledrelation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STYLEDRELATION_H
-#define QMT_STYLEDRELATION_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -50,5 +49,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_STYLEDRELATION_H
diff --git a/src/libs/modelinglib/qmt/style/styleengine.h b/src/libs/modelinglib/qmt/style/styleengine.h
index cbd70f14d6..2da52b429a 100644
--- a/src/libs/modelinglib/qmt/style/styleengine.h
+++ b/src/libs/modelinglib/qmt/style/styleengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_STYLEENGINE_H
-#define QMT_STYLEENGINE_H
+#pragma once
 
 #include "qmt/infrastructure/qmt_global.h"
 
@@ -81,5 +80,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_STYLEENGINE_H
diff --git a/src/libs/modelinglib/qmt/tasks/alignonrastervisitor.h b/src/libs/modelinglib/qmt/tasks/alignonrastervisitor.h
index b7e760e2f0..994cab48c3 100644
--- a/src/libs/modelinglib/qmt/tasks/alignonrastervisitor.h
+++ b/src/libs/modelinglib/qmt/tasks/alignonrastervisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ALIGNONRASTERVISITOR_H
-#define QMT_ALIGNONRASTERVISITOR_H
+#pragma once
 
 #include "qmt/diagram/dvisitor.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_ALIGNONRASTERVISITOR_H
diff --git a/src/libs/modelinglib/qmt/tasks/diagramscenecontroller.h b/src/libs/modelinglib/qmt/tasks/diagramscenecontroller.h
index cc678738a2..967e02f51c 100644
--- a/src/libs/modelinglib/qmt/tasks/diagramscenecontroller.h
+++ b/src/libs/modelinglib/qmt/tasks/diagramscenecontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_DIAGRAMSCENECONTROLLER_H
-#define QMT_DIAGRAMSCENECONTROLLER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/infrastructure/qmt_global.h"
@@ -133,5 +132,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_DIAGRAMSCENECONTROLLER_H
diff --git a/src/libs/modelinglib/qmt/tasks/finddiagramvisitor.h b/src/libs/modelinglib/qmt/tasks/finddiagramvisitor.h
index 1b14b29015..bd664629f1 100644
--- a/src/libs/modelinglib/qmt/tasks/finddiagramvisitor.h
+++ b/src/libs/modelinglib/qmt/tasks/finddiagramvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_FINDDIAGRAMVISITOR_H
-#define QMT_FINDDIAGRAMVISITOR_H
+#pragma once
 
 #include "qmt/model_controller/mvoidvisitor.h"
 
@@ -46,5 +45,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_FINDDIAGRAMVISITOR_H
diff --git a/src/libs/modelinglib/qmt/tasks/findrootdiagramvisitor.h b/src/libs/modelinglib/qmt/tasks/findrootdiagramvisitor.h
index 422376d27f..a520ef6e34 100644
--- a/src/libs/modelinglib/qmt/tasks/findrootdiagramvisitor.h
+++ b/src/libs/modelinglib/qmt/tasks/findrootdiagramvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_FINDROOTDIAGRAMVISITOR_H
-#define QMT_FINDROOTDIAGRAMVISITOR_H
+#pragma once
 
 #include "qmt/model_controller/mvoidvisitor.h"
 
@@ -47,5 +46,3 @@ private:
 };
 
 } // namespace qmt
-
-#endif // QMT_FINDROOTDIAGRAMVISITOR_H
diff --git a/src/libs/modelinglib/qmt/tasks/ielementtasks.h b/src/libs/modelinglib/qmt/tasks/ielementtasks.h
index f7837b7df8..3120474ea6 100644
--- a/src/libs/modelinglib/qmt/tasks/ielementtasks.h
+++ b/src/libs/modelinglib/qmt/tasks/ielementtasks.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_IELEMENTTASKS_H
-#define QMT_IELEMENTTASKS_H
+#pragma once
 
 namespace qmt {
 
@@ -77,5 +76,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_IELEMENTTASKS_H
diff --git a/src/libs/modelinglib/qmt/tasks/isceneinspector.h b/src/libs/modelinglib/qmt/tasks/isceneinspector.h
index d830f1ee7e..626bf06f66 100644
--- a/src/libs/modelinglib/qmt/tasks/isceneinspector.h
+++ b/src/libs/modelinglib/qmt/tasks/isceneinspector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_ISCENEINSPECTOR_H
-#define QMT_ISCENEINSPECTOR_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -51,5 +50,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_ISCENEINSPECTOR_H
diff --git a/src/libs/modelinglib/qmt/tasks/voidelementtasks.h b/src/libs/modelinglib/qmt/tasks/voidelementtasks.h
index 92a576edec..4ed1dd19b6 100644
--- a/src/libs/modelinglib/qmt/tasks/voidelementtasks.h
+++ b/src/libs/modelinglib/qmt/tasks/voidelementtasks.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMT_VOIDELEMENTTASKS_H
-#define QMT_VOIDELEMENTTASKS_H
+#pragma once
 
 #include "ielementtasks.h"
 #include "qmt/infrastructure/qmt_global.h"
@@ -76,5 +75,3 @@ public:
 };
 
 } // namespace qmt
-
-#endif // QMT_VOIDELEMENTTASKS_H
diff --git a/src/libs/modelinglib/qstringparser/qstringparser.h b/src/libs/modelinglib/qstringparser/qstringparser.h
index 43dae740ec..8735e9b60b 100644
--- a/src/libs/modelinglib/qstringparser/qstringparser.h
+++ b/src/libs/modelinglib/qstringparser/qstringparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QSTRINGPARSER_H
-#define QSTRINGPARSER_H
+#pragma once
 
 #include <QString>
 #include <QList>
@@ -138,5 +137,3 @@ public:
 private:
     const QString m_source;
 };
-
-#endif // QSTRINGPARSER_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/access.h b/src/libs/modelinglib/qtserialization/inc/qark/access.h
index bc12e32af8..276e6a275e 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/access.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/access.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_ACCESS_H
-#define QARK_ACCESS_H
+#pragma once
 
 namespace qark {
 
@@ -106,5 +105,3 @@ void serializeHelper(Archive &archive, T &t)
 #define QARK_ACCESS_SPECIALIZE(INARCHIVE, OUTARCHIVE, TYPE) \
     template class Access<INARCHIVE, TYPE>; \
     template class Access<OUTARCHIVE, TYPE>;
-
-#endif // QARK_ACCESS_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/archivebasics.h b/src/libs/modelinglib/qtserialization/inc/qark/archivebasics.h
index 4f9ad079d9..591954d20f 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/archivebasics.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/archivebasics.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_ARCHIVEBASICS_H
-#define QARK_ARCHIVEBASICS_H
+#pragma once
 
 #include "flag.h"
 
@@ -84,5 +83,3 @@ private:
 };
 
 } // namespace qark
-
-#endif // QARK_ARCHIVEBASICS_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/attribute.h b/src/libs/modelinglib/qtserialization/inc/qark/attribute.h
index da1203ad53..7070964d6f 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/attribute.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/attribute.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_ATTRIBUTE_H
-#define QARK_ATTRIBUTE_H
+#pragma once
 
 #include "parameters.h"
 
@@ -368,5 +367,3 @@ GetSetFuncAttr<U, T, V> attr(const QString &qualifiedName, U &u, T (*func)(const
 }
 
 } // namespace qark
-
-#endif // QARK_ATTRIBUTE_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/baseclass.h b/src/libs/modelinglib/qtserialization/inc/qark/baseclass.h
index 99776515a3..4fae0f2e7a 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/baseclass.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/baseclass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_BASECLASS_H
-#define QARK_BASECLASS_H
+#pragma once
 
 #include "typeregistry.h"
 #include "parameters.h"
@@ -99,5 +98,3 @@ Base<BASE, DERIVED> base(DERIVED &obj, const Parameters &parameters)
 }
 
 } // namespace qark
-
-#endif // QARK_BASECLASS_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/flag.h b/src/libs/modelinglib/qtserialization/inc/qark/flag.h
index 932c6b4083..e1ac63c484 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/flag.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/flag.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_FLAG_H
-#define QARK_FLAG_H
+#pragma once
 
 namespace qark {
 
@@ -43,5 +42,3 @@ private:
 };
 
 } // namespace qark
-
-#endif // QARK_FLAG_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/friend_access.h b/src/libs/modelinglib/qtserialization/inc/qark/friend_access.h
index 5c39a37aba..37b5fd35d0 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/friend_access.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/friend_access.h
@@ -23,11 +23,8 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_FRIEND_ACCESS_H
-#define QARK_FRIEND_ACCESS_H
+#pragma once
 
 #define QARK_FRIEND_ACCESS \
     template<class Archive, class T> \
     friend class qark::Access;
-
-#endif // QMT_FRIEND_ACCESS_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/impl/loadingrefmap.h b/src/libs/modelinglib/qtserialization/inc/qark/impl/loadingrefmap.h
index 1e44d169cf..6e290bd927 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/impl/loadingrefmap.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/impl/loadingrefmap.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_LOADINGREFMAP_H
-#define QARK_LOADINGREFMAP_H
+#pragma once
 
 #include "objectid.h"
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace impl
 } // namespace qark
-
-#endif // QARK_LOADINGREFMAP_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/impl/objectid.h b/src/libs/modelinglib/qtserialization/inc/qark/impl/objectid.h
index 142f2975b2..98c9b71343 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/impl/objectid.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/impl/objectid.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_OBJECTID_H
-#define QARK_OBJECTID_H
+#pragma once
 
 namespace qark {
 namespace impl {
@@ -51,5 +50,3 @@ inline bool operator<(const ObjectId &lhs, const ObjectId &rhs)
 
 } // namespace impl
 } // namespace qark
-
-#endif // QARK_OBJECTID_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/impl/savingrefmap.h b/src/libs/modelinglib/qtserialization/inc/qark/impl/savingrefmap.h
index f80f432ff5..b87fa6c3ed 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/impl/savingrefmap.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/impl/savingrefmap.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_SAVINGREFMAP_H
-#define QARK_SAVINGREFMAP_H
+#pragma once
 
 #include "objectid.h"
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace impl
 } // namespace qark
-
-#endif // QARK_SAVINGREFMAP_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/parameters.h b/src/libs/modelinglib/qtserialization/inc/qark/parameters.h
index 37f38aa74f..c583ff183b 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/parameters.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/parameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_PARAMETER_H
-#define QARK_PARAMETER_H
+#pragma once
 
 #include "flag.h"
 
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace qark
-
-#endif // QARK_PARAMETER_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/qxmlinarchive.h b/src/libs/modelinglib/qtserialization/inc/qark/qxmlinarchive.h
index b6f1ef077e..b11a4db04b 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/qxmlinarchive.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/qxmlinarchive.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_QXMLINARCHIVE_H
-#define QARK_QXMLINARCHIVE_H
+#pragma once
 
 #include "archivebasics.h"
 #include "tag.h"
@@ -925,5 +924,3 @@ void QXmlInArchive::skipUntilEndOfTag(const XmlTag &xmlTag)
 }
 
 } // namespace qark
-
-#endif // QARK_XMLINARCHIVE_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/qxmloutarchive.h b/src/libs/modelinglib/qtserialization/inc/qark/qxmloutarchive.h
index 651d7458e2..91525173cb 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/qxmloutarchive.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/qxmloutarchive.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_QXMLOUTARCHIVE_H
-#define QARK_QXMLOUTARCHIVE_H
+#pragma once
 
 #include "archivebasics.h"
 #include "tag.h"
@@ -327,5 +326,3 @@ private:
 };
 
 } // namespace qark
-
-#endif // QARK_QXMLOUTARCHIVE_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/reference.h b/src/libs/modelinglib/qtserialization/inc/qark/reference.h
index cd2f8ac93b..c00c6b6664 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/reference.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/reference.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_REFERENCE_H
-#define QARK_REFERENCE_H
+#pragma once
 
 #include "parameters.h"
 
@@ -422,5 +421,3 @@ GetSetFuncRef<U, T *, V * const &> ref(const QString &qualifiedName, U &u, T *(*
 }
 
 } // namespace qark
-
-#endif // QARK_REFERENCE_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/serialize.h b/src/libs/modelinglib/qtserialization/inc/qark/serialize.h
index bff84bbc62..57a3a19e08 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/serialize.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/serialize.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_SERIALIZE_H
-#define QARK_SERIALIZE_H
+#pragma once
 
 #include "tag.h"
 #include "baseclass.h"
@@ -494,5 +493,3 @@ typename std::enable_if<Archive::inArchive, Archive &>::type operator||(
 }
 
 } // namespace qark
-
-#endif // QARK_SERIALIZE_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/serialize_basic.h b/src/libs/modelinglib/qtserialization/inc/qark/serialize_basic.h
index 06e69d143c..695c53031d 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/serialize_basic.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/serialize_basic.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_SERIALIZE_BASIC_H
-#define QARK_SERIALIZE_BASIC_H
+#pragma once
 
 #include "parameters.h"
 #include "qstringparser/qstringparser.h"
@@ -126,5 +125,3 @@ inline void load(Archive &archive, QDateTime &dateTime, const Parameters &)
 }
 
 } // namespace qark
-
-#endif // QARK_SERIALIZE_BASIC_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/serialize_container.h b/src/libs/modelinglib/qtserialization/inc/qark/serialize_container.h
index 85865398b2..a9d8e2a922 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/serialize_container.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/serialize_container.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_SERIALIZE_CONTAINER_H
-#define QARK_SERIALIZE_CONTAINER_H
+#pragma once
 
 #include "parameters.h"
 
@@ -201,5 +200,3 @@ inline void load(Archive &archive, QHash<KEY, VALUE> &hash, const Parameters &)
 }
 
 } // namespace qark
-
-#endif // QARK_SERIALIZE_CONTAINER_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/serialize_enum.h b/src/libs/modelinglib/qtserialization/inc/qark/serialize_enum.h
index c4dcf219c6..f8c20f2896 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/serialize_enum.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/serialize_enum.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_SERIALIZE_ENUM_H
-#define QARK_SERIALIZE_ENUM_H
+#pragma once
 
 #include "parameters.h"
 
@@ -81,5 +80,3 @@ inline void load(Archive &archive, QFlags<T> &flags, const Parameters &)
 }
 
 } // namespace qark
-
-#endif // QARK_SERIALIZE_ENUM_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/serialize_pointer.h b/src/libs/modelinglib/qtserialization/inc/qark/serialize_pointer.h
index 2338676b24..876609643d 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/serialize_pointer.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/serialize_pointer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_SERIALIZE_POINTER_H
-#define QARK_SERIALIZE_POINTER_H
+#pragma once
 
 #include "typeregistry.h"
 
@@ -86,6 +85,3 @@ void load(Archive &archive, T *&p, const Parameters &)
 }
 
 } // namespace qark
-
-#endif // QARK_SERIALIZE_POINTER_H
-
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/tag.h b/src/libs/modelinglib/qtserialization/inc/qark/tag.h
index 5f6615bd36..24f81e5d92 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/tag.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/tag.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_TAG_H
-#define QARK_TAG_H
+#pragma once
 
 #include "typeregistry.h"
 #include "parameters.h"
@@ -150,5 +149,3 @@ inline End end(const Parameters &parameters)
 }
 
 } // namespace qark
-
-#endif // QARK_TAG_H
diff --git a/src/libs/modelinglib/qtserialization/inc/qark/typeregistry.h b/src/libs/modelinglib/qtserialization/inc/qark/typeregistry.h
index 50090e1826..aa0750cfdb 100644
--- a/src/libs/modelinglib/qtserialization/inc/qark/typeregistry.h
+++ b/src/libs/modelinglib/qtserialization/inc/qark/typeregistry.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QARK_TYPEREGISTRY_H
-#define QARK_TYPEREGISTRY_H
+#pragma once
 
 #include "parameters.h"
 
@@ -308,5 +307,3 @@ typename registry::TypeRegistry<Archive,T>::TypeInfo typeInfo(const QString &uid
     int qark::registry::DerivedTypeRegistry<OUTARCHIVE, typename std::add_const<BASE>::type, typename std::add_const<DERIVED>::type>::staticInit = \
             qark::registry::DerivedTypeRegistry<OUTARCHIVE, typename std::add_const<BASE>::type, typename std::add_const<DERIVED>::type>:: \
                 init(qark::registry::savePointer<OUTARCHIVE, typename std::add_const<BASE>::type, typename std::add_const<DERIVED>::type>, 0);
-
-#endif // QARK_TYPEREGISTRY_H
diff --git a/src/libs/qmldebug/baseenginedebugclient.h b/src/libs/qmldebug/baseenginedebugclient.h
index d490d05b24..b74397cf9d 100644
--- a/src/libs/qmldebug/baseenginedebugclient.h
+++ b/src/libs/qmldebug/baseenginedebugclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEENGINEDEBUGCLIENT_H
-#define BASEENGINEDEBUGCLIENT_H
+#pragma once
 
 #include "qmldebug_global.h"
 #include "qmldebugclient.h"
@@ -259,5 +258,3 @@ inline QDebug operator<<(QDebug dbg, const QmlDebug::ObjectReference &ref) {
     return dbg.space();
 }
 QT_END_NAMESPACE
-
-#endif // BASEENGINEDEBUGCLIENT_H
diff --git a/src/libs/qmldebug/basetoolsclient.h b/src/libs/qmldebug/basetoolsclient.h
index 7f2da7b167..d84e02066e 100644
--- a/src/libs/qmldebug/basetoolsclient.h
+++ b/src/libs/qmldebug/basetoolsclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASETOOLSCLIENT_H
-#define BASETOOLSCLIENT_H
+#pragma once
 
 #include "qmldebugclient.h"
 #include "baseenginedebugclient.h"
@@ -72,5 +71,3 @@ protected:
 };
 
 } // namespace QmlDebug
-
-#endif // BASETOOLSCLIENT_H
diff --git a/src/libs/qmldebug/declarativeenginedebugclient.h b/src/libs/qmldebug/declarativeenginedebugclient.h
index 5ef02c9395..793347e9c7 100644
--- a/src/libs/qmldebug/declarativeenginedebugclient.h
+++ b/src/libs/qmldebug/declarativeenginedebugclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DECLARATIVEENGINEDEBUGCLIENT_H
-#define DECLARATIVEENGINEDEBUGCLIENT_H
+#pragma once
 
 #include "baseenginedebugclient.h"
 
@@ -51,5 +50,3 @@ protected:
 };
 
 } // namespace QmlDebug
-
-#endif // DECLARATIVEENGINEDEBUGCLIENT_H
diff --git a/src/libs/qmldebug/declarativeenginedebugclientv2.h b/src/libs/qmldebug/declarativeenginedebugclientv2.h
index 286d95460b..00af9d5424 100644
--- a/src/libs/qmldebug/declarativeenginedebugclientv2.h
+++ b/src/libs/qmldebug/declarativeenginedebugclientv2.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DECLARATIVEENGINEDEBUGCLIENTV2_H
-#define DECLARATIVEENGINEDEBUGCLIENTV2_H
+#pragma once
 
 #include "baseenginedebugclient.h"
 
@@ -43,5 +42,3 @@ public:
 };
 
 } // namespace QmlDebug
-
-#endif // DECLARATIVEENGINEDEBUGCLIENTV2_H
diff --git a/src/libs/qmldebug/declarativetoolsclient.h b/src/libs/qmldebug/declarativetoolsclient.h
index 6e8d6e5378..83698b4037 100644
--- a/src/libs/qmldebug/declarativetoolsclient.h
+++ b/src/libs/qmldebug/declarativetoolsclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DECLARATIVETOOLSCLIENT_H
-#define DECLARATIVETOOLSCLIENT_H
+#pragma once
 
 #include "basetoolsclient.h"
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace QmlDebug
-
-#endif // DECLARATIVETOOLSCLIENT_H
diff --git a/src/libs/qmldebug/qdebugmessageclient.h b/src/libs/qmldebug/qdebugmessageclient.h
index c185e3ddfb..5a4e45bbac 100644
--- a/src/libs/qmldebug/qdebugmessageclient.h
+++ b/src/libs/qmldebug/qdebugmessageclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QDEBUGMESSAGECLIENT_H
-#define QDEBUGMESSAGECLIENT_H
+#pragma once
 
 #include "qmldebugclient.h"
 #include "qmldebug_global.h"
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace QmlDebug
-
-#endif // QDEBUGMESSAGECLIENT_H
diff --git a/src/libs/qmldebug/qmldebug_global.h b/src/libs/qmldebug/qmldebug_global.h
index b765adc477..3f6bc8ee30 100644
--- a/src/libs/qmldebug/qmldebug_global.h
+++ b/src/libs/qmldebug/qmldebug_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDEBUG_GLOBAL_H
-#define QMLDEBUG_GLOBAL_H
+#pragma once
 
 #if defined(QMLDEBUG_LIB)
 #  define QMLDEBUG_EXPORT Q_DECL_EXPORT
@@ -33,5 +32,3 @@
 #else
 #  define QMLDEBUG_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLDEBUG_GLOBAL_H
diff --git a/src/libs/qmldebug/qmldebugclient.h b/src/libs/qmldebug/qmldebugclient.h
index 95853f92a7..3ea50acae5 100644
--- a/src/libs/qmldebug/qmldebugclient.h
+++ b/src/libs/qmldebug/qmldebugclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDEBUGCLIENT_H
-#define QMLDEBUGCLIENT_H
+#pragma once
 
 #include "qmldebug_global.h"
 #include <qtcpsocket.h>
@@ -111,5 +110,3 @@ private:
 };
 
 } // namespace QmlDebug
-
-#endif // QMLDEBUGCLIENT_H
diff --git a/src/libs/qmldebug/qmldebugcommandlinearguments.h b/src/libs/qmldebug/qmldebugcommandlinearguments.h
index 3c060ea4db..4be2cbf386 100644
--- a/src/libs/qmldebug/qmldebugcommandlinearguments.h
+++ b/src/libs/qmldebug/qmldebugcommandlinearguments.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDEBUGCOMMANDLINEARGUMENTS_H
-#define QMLDEBUGCOMMANDLINEARGUMENTS_H
+#pragma once
 
 #include <QString>
 
@@ -83,6 +82,3 @@ static inline QString qmlDebugLocalArguments(QmlDebugServicesPreset services, co
 }
 
 } // namespace QmlDebug
-
-#endif // QMLDEBUGCOMMANDLINEARGUMENTS_H
-
diff --git a/src/libs/qmldebug/qmldebugconstants.h b/src/libs/qmldebug/qmldebugconstants.h
index 9b3d9ae431..74299b393f 100644
--- a/src/libs/qmldebug/qmldebugconstants.h
+++ b/src/libs/qmldebug/qmldebugconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDEBUGCONSTANTS_H
-#define QMLDEBUGCONSTANTS_H
+#pragma once
 
 namespace QmlDebug {
 namespace Constants {
@@ -40,5 +39,3 @@ const char QDECLARATIVE_ENGINE[] = "QDeclarativeEngine";
 
 } // namespace Constants
 } // namespace QmlDebug
-
-#endif // QMLDEBUGCONSTANTS_H
diff --git a/src/libs/qmldebug/qmlenginecontrolclient.h b/src/libs/qmldebug/qmlenginecontrolclient.h
index 5c57220bc2..c5da7a7130 100644
--- a/src/libs/qmldebug/qmlenginecontrolclient.h
+++ b/src/libs/qmldebug/qmlenginecontrolclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLENGINECONTROLCLIENT_H
-#define QMLENGINECONTROLCLIENT_H
+#pragma once
 
 #include "qmldebugclient.h"
 
@@ -73,5 +72,3 @@ protected:
 };
 
 }
-
-#endif // QMLENGINECONTROLCLIENT_H
diff --git a/src/libs/qmldebug/qmlenginedebugclient.h b/src/libs/qmldebug/qmlenginedebugclient.h
index fd7f7a30bc..706cbabe6b 100644
--- a/src/libs/qmldebug/qmlenginedebugclient.h
+++ b/src/libs/qmldebug/qmlenginedebugclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLENGINEDEBUGCLIENT_H
-#define QMLENGINEDEBUGCLIENT_H
+#pragma once
 
 #include "baseenginedebugclient.h"
 
@@ -43,5 +42,3 @@ public:
 };
 
 } // namespace QmlDebug
-
-#endif // QMLENGINEDEBUGCLIENT_H
diff --git a/src/libs/qmldebug/qmloutputparser.h b/src/libs/qmldebug/qmloutputparser.h
index bcfe5a9120..a9e08f08e6 100644
--- a/src/libs/qmldebug/qmloutputparser.h
+++ b/src/libs/qmldebug/qmloutputparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLOUTPUTPARSER_H
-#define QMLOUTPUTPARSER_H
+#pragma once
 
 #include "qmldebug_global.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace QmlDebug
-
-#endif // QMLOUTPUTPARSER_H
diff --git a/src/libs/qmldebug/qmlprofilereventlocation.h b/src/libs/qmldebug/qmlprofilereventlocation.h
index 725463698a..21de6d9305 100644
--- a/src/libs/qmldebug/qmlprofilereventlocation.h
+++ b/src/libs/qmldebug/qmlprofilereventlocation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREVENTLOCATION_H
-#define QMLPROFILEREVENTLOCATION_H
+#pragma once
 
 #include "qmldebug_global.h"
 
@@ -42,5 +41,3 @@ struct QMLDEBUG_EXPORT QmlEventLocation
 };
 
 }
-
-#endif // QMLPROFILEREVENTLOCATION_H
diff --git a/src/libs/qmldebug/qmlprofilereventtypes.h b/src/libs/qmldebug/qmlprofilereventtypes.h
index 82dd1a4357..7a9eefe179 100644
--- a/src/libs/qmldebug/qmlprofilereventtypes.h
+++ b/src/libs/qmldebug/qmlprofilereventtypes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREVENTTYPES_H
-#define QMLPROFILEREVENTTYPES_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -181,5 +180,3 @@ const quint64 QML_JS_RANGE_FEATURES = (1 << ProfileCompiling) |
 }
 
 } // namespace QmlDebug
-
-#endif //QMLPROFILEREVENTTYPES_H
diff --git a/src/libs/qmldebug/qmlprofilertraceclient.h b/src/libs/qmldebug/qmlprofilertraceclient.h
index 4c7bfcdfa1..adaf93971c 100644
--- a/src/libs/qmldebug/qmlprofilertraceclient.h
+++ b/src/libs/qmldebug/qmlprofilertraceclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERTRACECLIENT_H
-#define QMLPROFILERTRACECLIENT_H
+#pragma once
 
 #include "qmldebugclient.h"
 #include "qmlprofilereventtypes.h"
@@ -86,5 +85,3 @@ private:
 };
 
 } // namespace QmlDebug
-
-#endif // QMLPROFILERTRACECLIENT_H
diff --git a/src/libs/qmldebug/qmltoolsclient.h b/src/libs/qmldebug/qmltoolsclient.h
index ea4a0b7189..51dc6730af 100644
--- a/src/libs/qmldebug/qmltoolsclient.h
+++ b/src/libs/qmldebug/qmltoolsclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLTOOLSCLIENT_H
-#define QMLTOOLSCLIENT_H
+#pragma once
 
 #include "basetoolsclient.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace QmlDebug
-
-#endif // QMLTOOLSCLIENT_H
diff --git a/src/libs/qmldebug/qpacketprotocol.h b/src/libs/qmldebug/qpacketprotocol.h
index d3ad42ff15..33d1ecdbf6 100644
--- a/src/libs/qmldebug/qpacketprotocol.h
+++ b/src/libs/qmldebug/qpacketprotocol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QPACKETPROTOCOL_H
-#define QPACKETPROTOCOL_H
+#pragma once
 
 #include "qmldebug_global.h"
 
@@ -72,5 +71,3 @@ private:
 };
 
 } // QmlDebug
-
-#endif
diff --git a/src/libs/qmleditorwidgets/colorbox.h b/src/libs/qmleditorwidgets/colorbox.h
index 91b5451fd8..dd576f61f2 100644
--- a/src/libs/qmleditorwidgets/colorbox.h
+++ b/src/libs/qmleditorwidgets/colorbox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLORBOX_H
-#define COLORBOX_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QWidget>
@@ -86,5 +85,3 @@ private:
 };
 
 } //QmlEditorWidgets
-
-#endif //COLORBOX_H
diff --git a/src/libs/qmleditorwidgets/colorbutton.h b/src/libs/qmleditorwidgets/colorbutton.h
index 65f35c934d..c70fd2b309 100644
--- a/src/libs/qmleditorwidgets/colorbutton.h
+++ b/src/libs/qmleditorwidgets/colorbutton.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLORBUTTON_H
-#define COLORBUTTON_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QToolButton>
@@ -68,5 +67,3 @@ private:
 };
 
 } //QmlEditorWidgets
-
-#endif //COLORBUTTON_H
diff --git a/src/libs/qmleditorwidgets/contextpanetextwidget.h b/src/libs/qmleditorwidgets/contextpanetextwidget.h
index 02a6103965..4a15d85838 100644
--- a/src/libs/qmleditorwidgets/contextpanetextwidget.h
+++ b/src/libs/qmleditorwidgets/contextpanetextwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTEXTPANETEXTWIDGET_H
-#define CONTEXTPANETEXTWIDGET_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QWidget>
@@ -84,5 +83,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // CONTEXTPANETEXTWIDGET_H
diff --git a/src/libs/qmleditorwidgets/contextpanewidget.h b/src/libs/qmleditorwidgets/contextpanewidget.h
index 63794a8f98..f7cd9684ad 100644
--- a/src/libs/qmleditorwidgets/contextpanewidget.h
+++ b/src/libs/qmleditorwidgets/contextpanewidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTEXTPANEWIDGET_H
-#define CONTEXTPANEWIDGET_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QFrame>
@@ -141,5 +140,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // CONTEXTPANEWIDGET_H
diff --git a/src/libs/qmleditorwidgets/contextpanewidgetimage.h b/src/libs/qmleditorwidgets/contextpanewidgetimage.h
index 4990a93c09..50788b8562 100644
--- a/src/libs/qmleditorwidgets/contextpanewidgetimage.h
+++ b/src/libs/qmleditorwidgets/contextpanewidgetimage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTEXTPANEWIDGETIMAGE_H
-#define CONTEXTPANEWIDGETIMAGE_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include "contextpanewidget.h"
@@ -186,5 +185,3 @@ protected:
 
 
 } //QmlDesigner
-
-#endif // CONTEXTPANEWIDGETIMAGE_H
diff --git a/src/libs/qmleditorwidgets/contextpanewidgetrectangle.h b/src/libs/qmleditorwidgets/contextpanewidgetrectangle.h
index 8c57bd59f1..95221276d9 100644
--- a/src/libs/qmleditorwidgets/contextpanewidgetrectangle.h
+++ b/src/libs/qmleditorwidgets/contextpanewidgetrectangle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTEXTPANEWIDGETRECTANGLE_H
-#define CONTEXTPANEWIDGETRECTANGLE_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QWidget>
@@ -82,5 +81,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // CONTEXTPANEWIDGETRECTANGLE_H
diff --git a/src/libs/qmleditorwidgets/customcolordialog.h b/src/libs/qmleditorwidgets/customcolordialog.h
index 0431b695c0..a3753edc31 100644
--- a/src/libs/qmleditorwidgets/customcolordialog.h
+++ b/src/libs/qmleditorwidgets/customcolordialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMCOLORDIALOG_H
-#define CUSTOMCOLORDIALOG_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QFrame>
@@ -103,5 +102,3 @@ private:
 };
 
 } //QmlEditorWidgets
-
-#endif //CUSTOMCOLORDIALOG_H
diff --git a/src/libs/qmleditorwidgets/easingpane/easingcontextpane.h b/src/libs/qmleditorwidgets/easingpane/easingcontextpane.h
index 243bde11f5..8609f843b8 100644
--- a/src/libs/qmleditorwidgets/easingpane/easingcontextpane.h
+++ b/src/libs/qmleditorwidgets/easingpane/easingcontextpane.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EASINGCONTEXTPANE_H
-#define EASINGCONTEXTPANE_H
+#pragma once
 
 #include "easinggraph.h"
 
@@ -86,4 +85,3 @@ private slots:
 };
 
 }
-#endif // EASINGCONTEXTPANE_H
diff --git a/src/libs/qmleditorwidgets/easingpane/easinggraph.h b/src/libs/qmleditorwidgets/easingpane/easinggraph.h
index 03d72dca1b..37236caded 100644
--- a/src/libs/qmleditorwidgets/easingpane/easinggraph.h
+++ b/src/libs/qmleditorwidgets/easingpane/easinggraph.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EASINGGRAPH_H
-#define EASINGGRAPH_H
+#pragma once
 
 #include <QWidget>
 #include <QEasingCurve>
@@ -105,5 +104,3 @@ private:
 QT_END_NAMESPACE
 
 //QML_DECLARE_TYPE(EasingGraph)
-
-#endif // EASINGGRAPH_H
diff --git a/src/libs/qmleditorwidgets/filewidget.h b/src/libs/qmleditorwidgets/filewidget.h
index c130d53b18..ef445b0668 100644
--- a/src/libs/qmleditorwidgets/filewidget.h
+++ b/src/libs/qmleditorwidgets/filewidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEWIDGET_H
-#define FILEWIDGET_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 
@@ -117,6 +116,3 @@ private:
 };
 
 } //QmlEditorWidgets
-
-#endif
-
diff --git a/src/libs/qmleditorwidgets/fontsizespinbox.h b/src/libs/qmleditorwidgets/fontsizespinbox.h
index c288a984c4..2f86000fef 100644
--- a/src/libs/qmleditorwidgets/fontsizespinbox.h
+++ b/src/libs/qmleditorwidgets/fontsizespinbox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FONTSIZESPINBOX_H
-#define FONTSIZESPINBOX_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QAbstractSpinBox>
@@ -92,5 +91,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // FONTSIZESPINBOX_H
diff --git a/src/libs/qmleditorwidgets/gradientline.h b/src/libs/qmleditorwidgets/gradientline.h
index 493a59684f..99c101f2a4 100644
--- a/src/libs/qmleditorwidgets/gradientline.h
+++ b/src/libs/qmleditorwidgets/gradientline.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GRADIENTLINE_H
-#define GRADIENTLINE_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QWidget>
@@ -90,5 +89,3 @@ private:
 };
 
 } //QmlEditorWidgets
-
-#endif //GRADIENTLINE_H
diff --git a/src/libs/qmleditorwidgets/huecontrol.h b/src/libs/qmleditorwidgets/huecontrol.h
index ee88836441..f9db8790ed 100644
--- a/src/libs/qmleditorwidgets/huecontrol.h
+++ b/src/libs/qmleditorwidgets/huecontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HUECONTROL_H
-#define HUECONTROL_H
+#pragma once
 
 #include "qmleditorwidgets_global.h"
 #include <QWidget>
@@ -63,5 +62,3 @@ private:
 };
 
 } //QmlEditorWidgets
-
-#endif //HUECONTROL_H
diff --git a/src/libs/qmleditorwidgets/qmleditorwidgets_global.h b/src/libs/qmleditorwidgets/qmleditorwidgets_global.h
index 1c46500395..1b611c894a 100644
--- a/src/libs/qmleditorwidgets/qmleditorwidgets_global.h
+++ b/src/libs/qmleditorwidgets/qmleditorwidgets_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLEDITORWIDGETS_GLOBAL_H
-#define QMLEDITORWIDGETS_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -35,5 +34,3 @@
 # else
 #    define QMLEDITORWIDGETS_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLEDITORWIDGETS_GLOBAL_H
diff --git a/src/libs/qmljs/jsoncheck.h b/src/libs/qmljs/jsoncheck.h
index 6558c13d08..53246045ff 100644
--- a/src/libs/qmljs/jsoncheck.h
+++ b/src/libs/qmljs/jsoncheck.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONCHECK_H
-#define JSONCHECK_H
+#pragma once
 
 #include "qmljs_global.h"
 
@@ -83,5 +82,3 @@ private:
 };
 
 } // QmlJs
-
-#endif // JSONCHECK_H
diff --git a/src/libs/qmljs/parser/qmldirparser_p.h b/src/libs/qmljs/parser/qmldirparser_p.h
index be9e126f75..72a2cf9922 100644
--- a/src/libs/qmljs/parser/qmldirparser_p.h
+++ b/src/libs/qmljs/parser/qmldirparser_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QQMLDIRPARSER_P_H
-#define QQMLDIRPARSER_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -146,5 +145,3 @@ QDebug &operator<< (QDebug &, const QmlDirParser::Component &);
 QDebug &operator<< (QDebug &, const QmlDirParser::Script &);
 
 QT_END_NAMESPACE
-
-#endif // QQMLDIRPARSER_P_H
diff --git a/src/libs/qmljs/parser/qmlerror.h b/src/libs/qmljs/parser/qmlerror.h
index 3d4ebde73d..6219a7c8b5 100644
--- a/src/libs/qmljs/parser/qmlerror.h
+++ b/src/libs/qmljs/parser/qmlerror.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QQMLERROR_H
-#define QQMLERROR_H
+#pragma once
 
 
 
@@ -66,5 +65,3 @@ QDebug operator<<(QDebug debug, const QmlError &error);
 Q_DECLARE_TYPEINFO(QmlError, Q_MOVABLE_TYPE);
 
 QT_END_NAMESPACE
-
-#endif // QQMLERROR_H
diff --git a/src/libs/qmljs/parser/qmljs.g b/src/libs/qmljs/parser/qmljs.g
index 0a20e9e367..f0c1722dc6 100644
--- a/src/libs/qmljs/parser/qmljs.g
+++ b/src/libs/qmljs/parser/qmljs.g
@@ -201,8 +201,7 @@
 //    qlalr --no-debug --no-lines --qt qmljs.g
 //
 
-#ifndef QMLJSPARSER_P_H
-#define QMLJSPARSER_P_H
+#prama once
 
 #include "qmljsglobal_p.h"
 #include "qmljsgrammar_p.h"
@@ -3114,6 +3113,4 @@ QT_QML_END_NAMESPACE
 QT_QML_END_NAMESPACE
 
 
-
-#endif // QMLJSPARSER_P_H
 :/
diff --git a/src/libs/qmljs/parser/qmljsast_p.h b/src/libs/qmljs/parser/qmljsast_p.h
index 80f36c96b8..42c0046d4c 100644
--- a/src/libs/qmljs/parser/qmljsast_p.h
+++ b/src/libs/qmljs/parser/qmljsast_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSAST_P_H
-#define QMLJSAST_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -2759,5 +2758,3 @@ public:
 
 
 QT_QML_END_NAMESPACE
-
-#endif
diff --git a/src/libs/qmljs/parser/qmljsastfwd_p.h b/src/libs/qmljs/parser/qmljsastfwd_p.h
index e9ea732acd..4a818602bb 100644
--- a/src/libs/qmljs/parser/qmljsastfwd_p.h
+++ b/src/libs/qmljs/parser/qmljsastfwd_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSAST_FWD_P_H
-#define QMLJSAST_FWD_P_H
+#pragma once
 
 #include "qmljsglobal_p.h"
 
@@ -171,5 +170,3 @@ class UiHeaderItemList;
 } } // namespace AST
 
 QT_QML_END_NAMESPACE
-
-#endif
diff --git a/src/libs/qmljs/parser/qmljsastvisitor_p.h b/src/libs/qmljs/parser/qmljsastvisitor_p.h
index 036e34b4ba..769cb644a4 100644
--- a/src/libs/qmljs/parser/qmljsastvisitor_p.h
+++ b/src/libs/qmljs/parser/qmljsastvisitor_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSASTVISITOR_P_H
-#define QMLJSASTVISITOR_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -321,5 +320,3 @@ public:
 } } // namespace AST
 
 QT_QML_END_NAMESPACE
-
-#endif // QMLJSASTVISITOR_P_H
diff --git a/src/libs/qmljs/parser/qmljsengine_p.h b/src/libs/qmljs/parser/qmljsengine_p.h
index e9a72f6269..7078f3c6b4 100644
--- a/src/libs/qmljs/parser/qmljsengine_p.h
+++ b/src/libs/qmljs/parser/qmljsengine_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSENGINE_P_H
-#define QMLJSENGINE_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -111,5 +110,3 @@ double integerFromString(const char *buf, int size, int radix);
 } // end of namespace QmlJS
 
 QT_QML_END_NAMESPACE
-
-#endif // QMLJSENGINE_P_H
diff --git a/src/libs/qmljs/parser/qmljsglobal_p.h b/src/libs/qmljs/parser/qmljsglobal_p.h
index 8cdf617f66..f7810e6a43 100644
--- a/src/libs/qmljs/parser/qmljsglobal_p.h
+++ b/src/libs/qmljs/parser/qmljsglobal_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSGLOBAL_P_H
-#define QMLJSGLOBAL_P_H
+#pragma once
 
 #include <QtCore/qglobal.h>
 
@@ -52,5 +51,3 @@
 #    define QML_PARSER_EXPORT
 #  endif
 #endif // QT_CREATOR
-
-#endif // QMLJSGLOBAL_P_H
diff --git a/src/libs/qmljs/parser/qmljsgrammar_p.h b/src/libs/qmljs/parser/qmljsgrammar_p.h
index 9a84aa86f6..b36219f474 100644
--- a/src/libs/qmljs/parser/qmljsgrammar_p.h
+++ b/src/libs/qmljs/parser/qmljsgrammar_p.h
@@ -35,8 +35,7 @@
 //
 
 // This file was generated by qlalr - DO NOT EDIT!
-#ifndef QMLJSGRAMMAR_P_H
-#define QMLJSGRAMMAR_P_H
+#pragma once
 
 #include "qmljsglobal_p.h"
 #include <QtCore/qglobal.h>
@@ -196,5 +195,3 @@ public:
 
 
 QT_END_NAMESPACE
-#endif // QMLJSGRAMMAR_P_H
-
diff --git a/src/libs/qmljs/parser/qmljskeywords_p.h b/src/libs/qmljs/parser/qmljskeywords_p.h
index 36e04a732f..df0030d6dd 100644
--- a/src/libs/qmljs/parser/qmljskeywords_p.h
+++ b/src/libs/qmljs/parser/qmljskeywords_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSKEYWORDS_P_H
-#define QMLJSKEYWORDS_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -875,5 +874,3 @@ int Lexer::classify(const QChar *s, int n, bool qmlMode) {
 } // namespace QmlJS
 
 QT_QML_END_NAMESPACE
-
-#endif // QMLJSKEYWORDS_P_H
diff --git a/src/libs/qmljs/parser/qmljslexer_p.h b/src/libs/qmljs/parser/qmljslexer_p.h
index 463c551ee6..067161fb3f 100644
--- a/src/libs/qmljs/parser/qmljslexer_p.h
+++ b/src/libs/qmljs/parser/qmljslexer_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSLEXER_P_H
-#define QMLJSLEXER_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -233,5 +232,3 @@ private:
 } // end of namespace QmlJS
 
 QT_QML_END_NAMESPACE
-
-#endif // LEXER_H
diff --git a/src/libs/qmljs/parser/qmljsmemorypool_p.h b/src/libs/qmljs/parser/qmljsmemorypool_p.h
index bfa7ad6f9e..199f9dbbbd 100644
--- a/src/libs/qmljs/parser/qmljsmemorypool_p.h
+++ b/src/libs/qmljs/parser/qmljsmemorypool_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSMEMORYPOOL_P_H
-#define QMLJSMEMORYPOOL_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -153,5 +152,3 @@ public:
 } // namespace QmlJS
 
 QT_QML_END_NAMESPACE
-
-#endif
diff --git a/src/libs/qmljs/parser/qmljsparser_p.h b/src/libs/qmljs/parser/qmljsparser_p.h
index 0f00561d94..281c7bc6a3 100644
--- a/src/libs/qmljs/parser/qmljsparser_p.h
+++ b/src/libs/qmljs/parser/qmljsparser_p.h
@@ -46,8 +46,7 @@
 //    qlalr --no-debug --no-lines --qt qmljs.g
 //
 
-#ifndef QMLJSPARSER_P_H
-#define QMLJSPARSER_P_H
+#pragma once
 
 #include "qmljsglobal_p.h"
 #include "qmljsgrammar_p.h"
@@ -236,7 +235,3 @@ protected:
 #define J_SCRIPT_REGEXPLITERAL_RULE2 88
 
 QT_QML_END_NAMESPACE
-
-
-
-#endif // QMLJSPARSER_P_H
diff --git a/src/libs/qmljs/persistenttrie.h b/src/libs/qmljs/persistenttrie.h
index 65639bc4a3..35ab652967 100644
--- a/src/libs/qmljs/persistenttrie.h
+++ b/src/libs/qmljs/persistenttrie.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PERSISTENTTRIE_H
-#define PERSISTENTTRIE_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 
@@ -128,5 +127,3 @@ QMLJS_EXPORT QDebug &operator<<(QDebug &dbg, const Trie &trie);
 
 } // end namespace PersistentTrie
 } // end namespace QmlJS
-
-#endif // PERSISTENTTRIE_H
diff --git a/src/libs/qmljs/qmljs_global.h b/src/libs/qmljs/qmljs_global.h
index 3c9c4cc266..e34d6e5220 100644
--- a/src/libs/qmljs/qmljs_global.h
+++ b/src/libs/qmljs/qmljs_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_GLOBAL_H
-#define QMLJS_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -35,5 +34,3 @@
 #else
 #  define QMLJS_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLJS_GLOBAL_H
diff --git a/src/libs/qmljs/qmljsbind.h b/src/libs/qmljs/qmljsbind.h
index 15e23303e8..81da23b6fa 100644
--- a/src/libs/qmljs/qmljsbind.h
+++ b/src/libs/qmljs/qmljsbind.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSBIND_H
-#define QMLJSBIND_H
+#pragma once
 
 #include <qmljs/parser/qmljsastvisitor_p.h>
 #include <qmljs/qmljsvalueowner.h>
@@ -104,5 +103,3 @@ private:
 };
 
 } // namespace Qml
-
-#endif // QMLJSBIND_H
diff --git a/src/libs/qmljs/qmljsbundle.h b/src/libs/qmljs/qmljsbundle.h
index 8138b7315f..0bf00ab755 100644
--- a/src/libs/qmljs/qmljsbundle.h
+++ b/src/libs/qmljs/qmljsbundle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSBUNDLE_H
-#define QMLJSBUNDLE_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 #include <qmljs/persistenttrie.h>
@@ -104,5 +103,3 @@ private:
     QHash<Dialect,QmlBundle> m_bundles;
 };
 } // namespace QmlJS
-
-#endif // QMLJSBUNDLE_H
diff --git a/src/libs/qmljs/qmljscheck.h b/src/libs/qmljs/qmljscheck.h
index f449e331b3..810bdb8d26 100644
--- a/src/libs/qmljs/qmljscheck.h
+++ b/src/libs/qmljs/qmljscheck.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCHECK_H
-#define QMLJSCHECK_H
+#pragma once
 
 #include <qmljs/qmljsscopebuilder.h>
 #include <qmljs/qmljsscopechain.h>
@@ -155,5 +154,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSCHECK_H
diff --git a/src/libs/qmljs/qmljscodeformatter.h b/src/libs/qmljs/qmljscodeformatter.h
index 86540ece9a..990ec080ce 100644
--- a/src/libs/qmljs/qmljscodeformatter.h
+++ b/src/libs/qmljs/qmljscodeformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCODEFORMATTER_H
-#define QMLJSCODEFORMATTER_H
+#pragma once
 
 #include "qmljs_global.h"
 
@@ -328,5 +327,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSCODEFORMATTER_H
diff --git a/src/libs/qmljs/qmljscompletioncontextfinder.h b/src/libs/qmljs/qmljscompletioncontextfinder.h
index e3770bd1bc..34632807e7 100644
--- a/src/libs/qmljs/qmljscompletioncontextfinder.h
+++ b/src/libs/qmljs/qmljscompletioncontextfinder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCOMPLETIONCONTEXTFINDER_H
-#define QMLJSCOMPLETIONCONTEXTFINDER_H
+#pragma once
 
 #include "qmljs_global.h"
 #include <qmljs/qmljslineinfo.h>
@@ -70,5 +69,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSCOMPLETIONCONTEXTFINDER_H
diff --git a/src/libs/qmljs/qmljsconstants.h b/src/libs/qmljs/qmljsconstants.h
index 5d34c8f286..532b74697d 100644
--- a/src/libs/qmljs/qmljsconstants.h
+++ b/src/libs/qmljs/qmljsconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCONSTANTS_H
-#define QMLJSCONSTANTS_H
+#pragma once
 
 #include "qmljs_global.h"
 
@@ -91,4 +90,3 @@ const char TASK_IMPORT_SCAN[] = "QmlJSEditor.TaskImportScan";
 QMLJS_EXPORT Q_DECLARE_LOGGING_CATEGORY(qmljsLog)
 
 } // namespace QmlJS
-#endif // QMLJSCONSTANTS_H
diff --git a/src/libs/qmljs/qmljscontext.h b/src/libs/qmljs/qmljscontext.h
index 7aeb4500ac..fd7f0569eb 100644
--- a/src/libs/qmljs/qmljscontext.h
+++ b/src/libs/qmljs/qmljscontext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_CONTEXT_H
-#define QMLJS_CONTEXT_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsdocument.h"
@@ -97,5 +96,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJS_CONTEXT_H
diff --git a/src/libs/qmljs/qmljsdescribevalue.h b/src/libs/qmljs/qmljsdescribevalue.h
index d378c02434..3c27c320e5 100644
--- a/src/libs/qmljs/qmljsdescribevalue.h
+++ b/src/libs/qmljs/qmljsdescribevalue.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSDESCRIBEVALUE_H
-#define QMLJSDESCRIBEVALUE_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsinterpreter.h"
@@ -73,4 +72,3 @@ private:
 };
 
 } // namespace QmlJS
-#endif // QMLJSDESCRIBEVALUE_H
diff --git a/src/libs/qmljs/qmljsdialect.h b/src/libs/qmljs/qmljsdialect.h
index 7f2e87466f..5f63b51066 100644
--- a/src/libs/qmljs/qmljsdialect.h
+++ b/src/libs/qmljs/qmljsdialect.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSDIALECT_H
-#define QMLJSDIALECT_H
+#pragma once
 
 #include "qmljs_global.h"
 
@@ -168,4 +167,3 @@ private:
 };
 
 } // namespace QmlJS
-#endif // QMLJSDIALECT_H
diff --git a/src/libs/qmljs/qmljsdocument.h b/src/libs/qmljs/qmljsdocument.h
index ab04375f8e..0c39b52c02 100644
--- a/src/libs/qmljs/qmljsdocument.h
+++ b/src/libs/qmljs/qmljsdocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSDOCUMENT_H
-#define QMLJSDOCUMENT_H
+#pragma once
 
 #include <QList>
 #include <QSharedPointer>
@@ -246,5 +245,3 @@ public:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSDOCUMENT_H
diff --git a/src/libs/qmljs/qmljsevaluate.h b/src/libs/qmljs/qmljsevaluate.h
index 24b00967f2..0246bc453a 100644
--- a/src/libs/qmljs/qmljsevaluate.h
+++ b/src/libs/qmljs/qmljsevaluate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEVALUATE_H
-#define QMLJSEVALUATE_H
+#pragma once
 
 #include "parser/qmljsastvisitor_p.h"
 #include "qmljsdocument.h"
@@ -164,5 +163,3 @@ private:
 };
 
 } // namespace Qml
-
-#endif // QMLJSEVALUATE_H
diff --git a/src/libs/qmljs/qmljsfindexportedcpptypes.h b/src/libs/qmljs/qmljsfindexportedcpptypes.h
index 03d2b42840..fbc9126880 100644
--- a/src/libs/qmljs/qmljsfindexportedcpptypes.h
+++ b/src/libs/qmljs/qmljsfindexportedcpptypes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_QMLJSFINDEXPORTEDCPPTYPES_H
-#define QMLJS_QMLJSFINDEXPORTEDCPPTYPES_H
+#pragma once
 
 #include "qmljs_global.h"
 #include <cplusplus/CppDocument.h>
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJS_QMLJSFINDEXPORTEDCPPTYPES_H
diff --git a/src/libs/qmljs/qmljsicons.h b/src/libs/qmljs/qmljsicons.h
index 7772234535..989e088ad1 100644
--- a/src/libs/qmljs/qmljsicons.h
+++ b/src/libs/qmljs/qmljsicons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSICONS_H
-#define QMLJSICONS_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 #include <qmljs/parser/qmljsast_p.h>
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSICONS_H
diff --git a/src/libs/qmljs/qmljsicontextpane.h b/src/libs/qmljs/qmljsicontextpane.h
index 6578b49868..3a36a104ef 100644
--- a/src/libs/qmljs/qmljsicontextpane.h
+++ b/src/libs/qmljs/qmljsicontextpane.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSICONTEXTPANE_H
-#define QMLJSICONTEXTPANE_H
+#pragma once
 
 #include <QObject>
 
@@ -55,5 +54,3 @@ signals:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSICONTEXTPANE_H
diff --git a/src/libs/qmljs/qmljsimportdependencies.h b/src/libs/qmljs/qmljsimportdependencies.h
index c2885e27b0..f529629465 100644
--- a/src/libs/qmljs/qmljsimportdependencies.h
+++ b/src/libs/qmljs/qmljsimportdependencies.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSIMPORTCACHE_H
-#define QMLJSIMPORTCACHE_H
+#pragma once
 
 #include "qmljsconstants.h"
 #include "qmljsdialect.h"
@@ -232,5 +231,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSIMPORTCACHE_H
diff --git a/src/libs/qmljs/qmljsindenter.h b/src/libs/qmljs/qmljsindenter.h
index a140326406..97cf1eb6ab 100644
--- a/src/libs/qmljs/qmljsindenter.h
+++ b/src/libs/qmljs/qmljsindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSINDENTER_H
-#define QMLJSINDENTER_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 #include <qmljs/qmljslineinfo.h>
@@ -72,6 +71,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSINDENTER_H
-
diff --git a/src/libs/qmljs/qmljsinterpreter.h b/src/libs/qmljs/qmljsinterpreter.h
index 4ceece5e3d..3d86a5795e 100644
--- a/src/libs/qmljs/qmljsinterpreter.h
+++ b/src/libs/qmljs/qmljsinterpreter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_INTERPRETER_H
-#define QMLJS_INTERPRETER_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 #include <qmljs/qmljsconstants.h>
@@ -1129,5 +1128,3 @@ public:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJS_INTERPRETER_H
diff --git a/src/libs/qmljs/qmljslineinfo.h b/src/libs/qmljs/qmljslineinfo.h
index eac9eeba51..d687a1e18b 100644
--- a/src/libs/qmljs/qmljslineinfo.h
+++ b/src/libs/qmljs/qmljslineinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSLINEINFO_H
-#define QMLJSLINEINFO_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 
@@ -117,6 +116,3 @@ protected:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSLINEINFO_H
-
diff --git a/src/libs/qmljs/qmljslink.h b/src/libs/qmljs/qmljslink.h
index 0735f62bf9..59e5e3f85a 100644
--- a/src/libs/qmljs/qmljslink.h
+++ b/src/libs/qmljs/qmljslink.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSLINK_H
-#define QMLJSLINK_H
+#pragma once
 
 #include <qmljs/qmljscontext.h>
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSLINK_H
diff --git a/src/libs/qmljs/qmljsmodelmanagerinterface.h b/src/libs/qmljs/qmljsmodelmanagerinterface.h
index 690b178ec8..421a06b7b0 100644
--- a/src/libs/qmljs/qmljsmodelmanagerinterface.h
+++ b/src/libs/qmljs/qmljsmodelmanagerinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSMODELMANAGERINTERFACE_H
-#define QMLJSMODELMANAGERINTERFACE_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsbundle.h"
@@ -284,5 +283,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSMODELMANAGERINTERFACE_H
diff --git a/src/libs/qmljs/qmljsplugindumper.h b/src/libs/qmljs/qmljsplugindumper.h
index 7a93631751..f0a716df9c 100644
--- a/src/libs/qmljs/qmljsplugindumper.h
+++ b/src/libs/qmljs/qmljsplugindumper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSPLUGINDUMPER_H
-#define QMLJSPLUGINDUMPER_H
+#pragma once
 
 #include <qmljs/qmljsmodelmanagerinterface.h>
 
@@ -97,5 +96,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSPLUGINDUMPER_H
diff --git a/src/libs/qmljs/qmljspropertyreader.h b/src/libs/qmljs/qmljspropertyreader.h
index 79721f54be..650b3d075d 100644
--- a/src/libs/qmljs/qmljspropertyreader.h
+++ b/src/libs/qmljs/qmljspropertyreader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSPROPERTYREADER_H
-#define QMLJSPROPERTYREADER_H
+#pragma once
 
 #include <qmljs/qmljsdocument.h>
 
@@ -71,5 +70,3 @@ private:
 };
 
 } //QmlJS
-
-#endif // QMLJSPROPERTYREADER_H
diff --git a/src/libs/qmljs/qmljsqrcparser.h b/src/libs/qmljs/qmljsqrcparser.h
index 19bd4d0f78..b52f874e79 100644
--- a/src/libs/qmljs/qmljsqrcparser.h
+++ b/src/libs/qmljs/qmljsqrcparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSQRCPARSER_H
-#define QMLJSQRCPARSER_H
+#pragma once
 #include "qmljs_global.h"
 
 #include <QMap>
@@ -80,4 +79,3 @@ private:
     Internal::QrcCachePrivate *d;
 };
 }
-#endif // QMLJSQRCPARSER_H
diff --git a/src/libs/qmljs/qmljsreformatter.h b/src/libs/qmljs/qmljsreformatter.h
index 4d210463c0..18d5c6fd85 100644
--- a/src/libs/qmljs/qmljsreformatter.h
+++ b/src/libs/qmljs/qmljsreformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSREFORMATTER_H
-#define QMLJSREFORMATTER_H
+#pragma once
 
 #include "qmljs_global.h"
 
@@ -33,5 +32,3 @@
 namespace QmlJS {
 QMLJS_EXPORT QString reformat(const Document::Ptr &doc);
 }
-
-#endif // QMLJSREFORMATTER_H
diff --git a/src/libs/qmljs/qmljsrewriter.h b/src/libs/qmljs/qmljsrewriter.h
index d8dea16541..1bb68a01c1 100644
--- a/src/libs/qmljs/qmljsrewriter.h
+++ b/src/libs/qmljs/qmljsrewriter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSREWRITER_H
-#define QMLJSREWRITER_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 #include <qmljs/parser/qmljsastfwd_p.h>
@@ -112,5 +111,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSREWRITER_H
diff --git a/src/libs/qmljs/qmljsscanner.h b/src/libs/qmljs/qmljsscanner.h
index 9f038daf82..0cd8c69d7d 100644
--- a/src/libs/qmljs/qmljsscanner.h
+++ b/src/libs/qmljs/qmljsscanner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSSCANNER_H
-#define QMLJSSCANNER_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 
@@ -100,5 +99,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSSCANNER_H
diff --git a/src/libs/qmljs/qmljsscopeastpath.h b/src/libs/qmljs/qmljsscopeastpath.h
index d298e15e00..f06db11c5c 100644
--- a/src/libs/qmljs/qmljsscopeastpath.h
+++ b/src/libs/qmljs/qmljsscopeastpath.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSSCOPEASTPATH_H
-#define QMLJSSCOPEASTPATH_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "parser/qmljsastvisitor_p.h"
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSSCOPEASTPATH_H
diff --git a/src/libs/qmljs/qmljsscopebuilder.h b/src/libs/qmljs/qmljsscopebuilder.h
index 19b33b5a33..472a409105 100644
--- a/src/libs/qmljs/qmljsscopebuilder.h
+++ b/src/libs/qmljs/qmljsscopebuilder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSSCOPEBUILDER_H
-#define QMLJSSCOPEBUILDER_H
+#pragma once
 
 #include <qmljs/qmljsdocument.h>
 
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSSCOPEBUILDER_H
diff --git a/src/libs/qmljs/qmljsscopechain.h b/src/libs/qmljs/qmljsscopechain.h
index f8e2913e9c..a08d686248 100644
--- a/src/libs/qmljs/qmljsscopechain.h
+++ b/src/libs/qmljs/qmljsscopechain.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_SCOPECHAIN_H
-#define QMLJS_SCOPECHAIN_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsdocument.h"
@@ -123,5 +122,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJS_SCOPECHAIN_H
diff --git a/src/libs/qmljs/qmljssimplereader.h b/src/libs/qmljs/qmljssimplereader.h
index dc55042c96..a0ff03f455 100644
--- a/src/libs/qmljs/qmljssimplereader.h
+++ b/src/libs/qmljs/qmljssimplereader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_SIMPLEREADER_H
-#define QMLJS_SIMPLEREADER_H
+#pragma once
 
 #include <qmljs/qmljs_global.h>
 #include <qmljs/parser/qmljsastfwd_p.h>
@@ -127,5 +126,3 @@ private:
 };
 
 }  // namespace QmlJS
-
-#endif // QMLJS_SIMPLEREADER_H
diff --git a/src/libs/qmljs/qmljsstaticanalysismessage.h b/src/libs/qmljs/qmljsstaticanalysismessage.h
index e479b9adbb..e5b8f8d882 100644
--- a/src/libs/qmljs/qmljsstaticanalysismessage.h
+++ b/src/libs/qmljs/qmljsstaticanalysismessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_STATICANALYSIS_QMLJSSTATICANALYSISMESSAGE_H
-#define QMLJS_STATICANALYSIS_QMLJSSTATICANALYSISMESSAGE_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsconstants.h"
@@ -166,5 +165,3 @@ public:
 
 } // namespace StaticAnalysis
 } // namespace QmlJS
-
-#endif // QMLJS_STATICANALYSIS_QMLJSSTATICANALYSISMESSAGE_H
diff --git a/src/libs/qmljs/qmljstypedescriptionreader.h b/src/libs/qmljs/qmljstypedescriptionreader.h
index 826aa7dec0..85829d04ee 100644
--- a/src/libs/qmljs/qmljstypedescriptionreader.h
+++ b/src/libs/qmljs/qmljstypedescriptionreader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSTYPEDESCRIPTIONREADER_H
-#define QMLJSTYPEDESCRIPTIONREADER_H
+#pragma once
 
 #include "qmljs_global.h"
 #include <qmljs/parser/qmljsastfwd_p.h>
@@ -94,5 +93,3 @@ private:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJSTYPEDESCRIPTIONREADER_H
diff --git a/src/libs/qmljs/qmljsutils.h b/src/libs/qmljs/qmljsutils.h
index 41d89a9352..dbbfbd3995 100644
--- a/src/libs/qmljs/qmljsutils.h
+++ b/src/libs/qmljs/qmljsutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_QMLJSUTILS_H
-#define QMLJS_QMLJSUTILS_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsconstants.h"
@@ -70,5 +69,3 @@ DiagnosticMessage errorMessage(const T *node, const QString &message)
 }
 
 } // namespace QmlJS
-
-#endif // QMLJS_QMLJSUTILS_H
diff --git a/src/libs/qmljs/qmljsvalueowner.h b/src/libs/qmljs/qmljsvalueowner.h
index 88d58fe5cc..9fad48a235 100644
--- a/src/libs/qmljs/qmljsvalueowner.h
+++ b/src/libs/qmljs/qmljsvalueowner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJS_VALUEOWNER_H
-#define QMLJS_VALUEOWNER_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsinterpreter.h"
@@ -155,5 +154,3 @@ protected:
 };
 
 } // namespace QmlJS
-
-#endif // QMLJS_VALUEOWNER_H
diff --git a/src/libs/qmljs/qmljsviewercontext.h b/src/libs/qmljs/qmljsviewercontext.h
index 9d2db50807..7724d872d0 100644
--- a/src/libs/qmljs/qmljsviewercontext.h
+++ b/src/libs/qmljs/qmljsviewercontext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VIEWERCONTEXT_H
-#define VIEWERCONTEXT_H
+#pragma once
 
 #include "qmljs_global.h"
 #include "qmljsdialect.h"
@@ -59,4 +58,3 @@ public:
 };
 
 } // namespace QmlJS
-#endif // VIEWERCONTEXT_H
diff --git a/src/libs/qtcreatorcdbext/common.h b/src/libs/qtcreatorcdbext/common.h
index a33ec01ebb..e41a71df12 100644
--- a/src/libs/qtcreatorcdbext/common.h
+++ b/src/libs/qtcreatorcdbext/common.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMON_H
-#define COMMON_H
+#pragma once
 
 // Define KDEXT_64BIT to make all wdbgexts APIs recognize 64 bit addresses
 // It is recommended for extensions to use 64 bit headers from wdbgexts so
@@ -76,5 +75,3 @@ std::string sourceFileNameByOffset(CIDebugSymbols *symbols, ULONG64 offset, PULO
 #  define QTC_TRACE_IN
 #  define QTC_TRACE_OUT
 #endif
-
-#endif // COMMON_H
diff --git a/src/libs/qtcreatorcdbext/containers.h b/src/libs/qtcreatorcdbext/containers.h
index 9113a56fd9..ee991df439 100644
--- a/src/libs/qtcreatorcdbext/containers.h
+++ b/src/libs/qtcreatorcdbext/containers.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTAINERS_H
-#define CONTAINERS_H
+#pragma once
 
 struct SymbolGroupValueContext;
 class AbstractSymbolGroupNode;
@@ -45,5 +44,3 @@ std::vector<AbstractSymbolGroupNode *> containerChildren(SymbolGroupNode *node,
                                                          int type,
                                                          unsigned size,
                                                          const SymbolGroupValueContext &ctx);
-
-#endif // CONTAINERS_H
diff --git a/src/libs/qtcreatorcdbext/eventcallback.h b/src/libs/qtcreatorcdbext/eventcallback.h
index 07e124ecd1..d92f3e97f5 100644
--- a/src/libs/qtcreatorcdbext/eventcallback.h
+++ b/src/libs/qtcreatorcdbext/eventcallback.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EVENTCALLBACK_H
-#define EVENTCALLBACK_H
+#pragma once
 
 #include "common.h"
 #include "extensioncontext.h"
@@ -148,4 +147,3 @@ public:
     private:
         IDebugEventCallbacks *m_wrapped;
 };
-#endif // EVENTCALLBACK_H
diff --git a/src/libs/qtcreatorcdbext/extensioncontext.h b/src/libs/qtcreatorcdbext/extensioncontext.h
index 02066d69dd..428a5275f6 100644
--- a/src/libs/qtcreatorcdbext/extensioncontext.h
+++ b/src/libs/qtcreatorcdbext/extensioncontext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTENSIONCONTEXT_H
-#define EXTENSIONCONTEXT_H
+#pragma once
 
 #include "common.h"
 #include "iinterfacepointer.h"
@@ -187,5 +186,3 @@ private:
     IInterfacePointer<CIDebugRegisters> m_registers;
     IInterfacePointer<CIDebugDataSpaces> m_dataSpaces;
 };
-
-#endif // EXTENSIONCONTEXT_H
diff --git a/src/libs/qtcreatorcdbext/gdbmihelpers.h b/src/libs/qtcreatorcdbext/gdbmihelpers.h
index 6821e79596..4bf113d329 100644
--- a/src/libs/qtcreatorcdbext/gdbmihelpers.h
+++ b/src/libs/qtcreatorcdbext/gdbmihelpers.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBMIHELPERS_H
-#define GDBMIHELPERS_H
+#pragma once
 
 #include "common.h"
 #include <vector>
@@ -177,5 +176,3 @@ bool evaluateExpression(CIDebugControl *control, const std::string expression,
 
 bool evaluateInt64Expression(CIDebugControl *control, const std::string expression,
                              LONG64 *, std::string *errorMessage);
-
-#endif // GDBMIHELPERS_H
diff --git a/src/libs/qtcreatorcdbext/iinterfacepointer.h b/src/libs/qtcreatorcdbext/iinterfacepointer.h
index bd0b457ec7..64e7e56448 100644
--- a/src/libs/qtcreatorcdbext/iinterfacepointer.h
+++ b/src/libs/qtcreatorcdbext/iinterfacepointer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IINTERFACEPOINTER_H
-#define IINTERFACEPOINTER_H
+#pragma once
 
 #include "common.h"
 
@@ -80,5 +79,3 @@ private:
     IInterface *m_instance;
     HRESULT m_hr;
 };
-
-#endif // IINTERFACEPOINTER_H
diff --git a/src/libs/qtcreatorcdbext/knowntype.h b/src/libs/qtcreatorcdbext/knowntype.h
index 6ce6c94e73..6e4d9bf799 100644
--- a/src/libs/qtcreatorcdbext/knowntype.h
+++ b/src/libs/qtcreatorcdbext/knowntype.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef KNOWNTYPE_H
-#define KNOWNTYPE_H
+#pragma once
 
 // Enumeration describing a type.
 enum KnownType
@@ -178,5 +177,3 @@ enum KnownType
     KT_StdMultiMap =  KT_STL_Type + KT_ContainerType + KT_HasSimpleDumper + 7,
     KT_StdArray =  KT_STL_Type + KT_ContainerType + KT_HasSimpleDumper + 8
 };
-
-#endif // KNOWNTYPE_H
diff --git a/src/libs/qtcreatorcdbext/outputcallback.h b/src/libs/qtcreatorcdbext/outputcallback.h
index 2a5cd1f807..846e4a74c1 100644
--- a/src/libs/qtcreatorcdbext/outputcallback.h
+++ b/src/libs/qtcreatorcdbext/outputcallback.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTPUTCALLBACK_H
-#define OUTPUTCALLBACK_H
+#pragma once
 
 #include "common.h"
 
@@ -63,5 +62,3 @@ private:
     bool m_recording;
     std::wstring m_recorded;
 };
-
-#endif // OUTPUTCALLBACK_H
diff --git a/src/libs/qtcreatorcdbext/stringutils.h b/src/libs/qtcreatorcdbext/stringutils.h
index 5e8f422ad1..89316d7e9a 100644
--- a/src/libs/qtcreatorcdbext/stringutils.h
+++ b/src/libs/qtcreatorcdbext/stringutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STRINGUTILS_H
-#define STRINGUTILS_H
+#pragma once
 
 #include <string>
 #include <sstream>
@@ -222,5 +221,3 @@ void formatGdbmiHash(std::ostream &os, const std::map<std::string, std::string>
 
 // Hex encoding helpers
 void hexEncode(std::ostream &str, const unsigned char *source, size_t sourcelen);
-
-#endif // STRINGUTILS_H
diff --git a/src/libs/qtcreatorcdbext/symbolgroup.h b/src/libs/qtcreatorcdbext/symbolgroup.h
index 5da31d52df..20281a500b 100644
--- a/src/libs/qtcreatorcdbext/symbolgroup.h
+++ b/src/libs/qtcreatorcdbext/symbolgroup.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLGROUP_H
-#define SYMBOLGROUP_H
+#pragma once
 
 #include "common.h"
 #include "symbolgroupnode.h"
@@ -170,5 +169,3 @@ private:
     static inline std::string fixWatchExpressionI(CIDebugSymbols *s, const std::string &ex);
     bool collapsePointerItems(std::string *errorMessage);
 };
-
-#endif // SYMBOLGROUP_H
diff --git a/src/libs/qtcreatorcdbext/symbolgroupnode.h b/src/libs/qtcreatorcdbext/symbolgroupnode.h
index c46a491528..cf4994fb11 100644
--- a/src/libs/qtcreatorcdbext/symbolgroupnode.h
+++ b/src/libs/qtcreatorcdbext/symbolgroupnode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLGROUPNODE_H
-#define SYMBOLGROUPNODE_H
+#pragma once
 
 #include "common.h"
 
@@ -432,5 +431,3 @@ private:
     const DumpParameters &m_parameters;
     unsigned m_lastDepth;
 };
-
-#endif // SYMBOLGROUPNODE_H
diff --git a/src/libs/qtcreatorcdbext/symbolgroupvalue.h b/src/libs/qtcreatorcdbext/symbolgroupvalue.h
index 7a8edf8d42..ad19aff641 100644
--- a/src/libs/qtcreatorcdbext/symbolgroupvalue.h
+++ b/src/libs/qtcreatorcdbext/symbolgroupvalue.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLGROUPVALUE_H
-#define SYMBOLGROUPVALUE_H
+#pragma once
 
 #include "common.h"
 #include "knowntype.h"
@@ -274,5 +273,3 @@ bool assignType(SymbolGroupNode  *n, int valueEncoding, const std::string &value
 std::vector<AbstractSymbolGroupNode *>
     dumpComplexType(SymbolGroupNode *node, int type, void *specialInfo,
                     const SymbolGroupValueContext &ctx);
-
-#endif // SYMBOLGROUPVALUE_H
diff --git a/src/libs/sqlite/columndefinition.h b/src/libs/sqlite/columndefinition.h
index cf1715a33f..91f64cb24c 100644
--- a/src/libs/sqlite/columndefinition.h
+++ b/src/libs/sqlite/columndefinition.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLUMNDEFINITION_H
-#define COLUMNDEFINITION_H
+#pragma once
 
 #include "sqliteglobal.h"
 #include "utf8string.h"
@@ -51,5 +50,3 @@ private:
 };
 
 }
-
-#endif // COLUMNDEFINITION_H
diff --git a/src/libs/sqlite/createtablecommand.h b/src/libs/sqlite/createtablecommand.h
index 70b2146394..b4387e7ab7 100644
--- a/src/libs/sqlite/createtablecommand.h
+++ b/src/libs/sqlite/createtablecommand.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNAL_CREATETABLECOMMAND_H
-#define INTERNAL_CREATETABLECOMMAND_H
+#pragma once
 
 #include "columndefinition.h"
 #include "utf8string.h"
@@ -48,5 +47,3 @@ public:
 } // namespace Internal
 
 Q_DECLARE_METATYPE(Internal::CreateTableCommand)
-
-#endif // INTERNAL_CREATETABLECOMMAND_H
diff --git a/src/libs/sqlite/createtablesqlstatementbuilder.h b/src/libs/sqlite/createtablesqlstatementbuilder.h
index 25caf3ccda..3445d4946f 100644
--- a/src/libs/sqlite/createtablesqlstatementbuilder.h
+++ b/src/libs/sqlite/createtablesqlstatementbuilder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CREATETABLESQLSTATEMENTBUILDER_H
-#define CREATETABLESQLSTATEMENTBUILDER_H
+#pragma once
 
 #include "columndefinition.h"
 #include "sqlstatementbuilder.h"
@@ -62,5 +61,3 @@ private:
 };
 
 }
-
-#endif // CREATETABLESQLSTATEMENTBUILDER_H
diff --git a/src/libs/sqlite/sqlitecolumn.h b/src/libs/sqlite/sqlitecolumn.h
index c16ec3f212..136691e36d 100644
--- a/src/libs/sqlite/sqlitecolumn.h
+++ b/src/libs/sqlite/sqlitecolumn.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITECOLUMN_H
-#define SQLITECOLUMN_H
+#pragma once
 
 #include "columndefinition.h"
 #include "utf8string.h"
@@ -55,5 +54,3 @@ private:
     ColumnType type_;
     bool isPrimaryKey_;
 };
-
-#endif // SQLITECOLUMN_H
diff --git a/src/libs/sqlite/sqlitedatabase.h b/src/libs/sqlite/sqlitedatabase.h
index ec77d78f84..91454329ee 100644
--- a/src/libs/sqlite/sqlitedatabase.h
+++ b/src/libs/sqlite/sqlitedatabase.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEDATABASE_H
-#define SQLITEDATABASE_H
+#pragma once
 
 #include "sqlitedatabaseconnectionproxy.h"
 #include "sqliteglobal.h"
@@ -78,5 +77,3 @@ private:
     QString databaseFilePath_;
     JournalMode journalMode_;
 };
-
-#endif // SQLITEDATABASE_H
diff --git a/src/libs/sqlite/sqlitedatabasebackend.h b/src/libs/sqlite/sqlitedatabasebackend.h
index 674e0324d7..7d86519922 100644
--- a/src/libs/sqlite/sqlitedatabasebackend.h
+++ b/src/libs/sqlite/sqlitedatabasebackend.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEDATABASEBACKEND_H
-#define SQLITEDATABASEBACKEND_H
+#pragma once
 
 #include "sqliteglobal.h"
 
@@ -107,5 +106,3 @@ private:
     TextEncoding cachedTextEncoding;
 
 };
-
-#endif // SQLITEDATABASEBACKEND_H
diff --git a/src/libs/sqlite/sqlitedatabaseconnection.h b/src/libs/sqlite/sqlitedatabaseconnection.h
index 154cf250d9..bbf813ffe6 100644
--- a/src/libs/sqlite/sqlitedatabaseconnection.h
+++ b/src/libs/sqlite/sqlitedatabaseconnection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEDATABASECONNECTIONCONTROLLER_H
-#define SQLITEDATABASECONNECTIONCONTROLLER_H
+#pragma once
 
 #include "sqlitedatabasebackend.h"
 
@@ -56,5 +55,3 @@ signals:
 private:
     SqliteDatabaseBackend databaseBackend;
 };
-
-#endif // SQLITEDATABASECONNECTIONCONTROLLER_H
diff --git a/src/libs/sqlite/sqlitedatabaseconnectionproxy.h b/src/libs/sqlite/sqlitedatabaseconnectionproxy.h
index 2e3f1e7e96..ddc25f18b9 100644
--- a/src/libs/sqlite/sqlitedatabaseconnectionproxy.h
+++ b/src/libs/sqlite/sqlitedatabaseconnectionproxy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEDATABASECONNECTION_H
-#define SQLITEDATABASECONNECTION_H
+#pragma once
 
 #include <sqliteglobal.h>
 
@@ -62,5 +61,3 @@ private:
     QPointer<SqliteWorkerThread> databaseConnectionThread;
     bool databaseConnectionIsOpen;
 };
-
-#endif // SQLITEDATABASECONNECTION_H
diff --git a/src/libs/sqlite/sqliteexception.h b/src/libs/sqlite/sqliteexception.h
index 54d9084584..b778d39b58 100644
--- a/src/libs/sqlite/sqliteexception.h
+++ b/src/libs/sqlite/sqliteexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEEXCEPTION_H
-#define SQLITEEXCEPTION_H
+#pragma once
 
 #include "sqliteglobal.h"
 
@@ -41,5 +40,3 @@ private:
     const char *whatErrorHasHappen;
     QByteArray sqliteErrorMessage_;
 };
-
-#endif // SQLITEEXCEPTION_H
diff --git a/src/libs/sqlite/sqliteglobal.h b/src/libs/sqlite/sqliteglobal.h
index 5d75871b86..9349230fab 100644
--- a/src/libs/sqlite/sqliteglobal.h
+++ b/src/libs/sqlite/sqliteglobal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEGLOBAL_H
-#define SQLITEGLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -86,6 +85,3 @@ class Utf8StringVector;
 
 typedef QMap<Utf8String, QVariant> RowDictionary;
 typedef QVector<RowDictionary> RowDictionaries;
-
-
-#endif // SQLITEGLOBAL_H
diff --git a/src/libs/sqlite/sqlitereadstatement.h b/src/libs/sqlite/sqlitereadstatement.h
index 932c36af31..4f27c8657b 100644
--- a/src/libs/sqlite/sqlitereadstatement.h
+++ b/src/libs/sqlite/sqlitereadstatement.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEREADSTATEMENT_H
-#define SQLITEREADSTATEMENT_H
+#pragma once
 
 #include "sqlitestatement.h"
 
@@ -50,5 +49,3 @@ public:
 protected:
     void checkIsReadOnlyStatement();
 };
-
-#endif // SQLITEREADSTATEMENT_H
diff --git a/src/libs/sqlite/sqlitereadwritestatement.h b/src/libs/sqlite/sqlitereadwritestatement.h
index 1b7e4e8431..cb3c0707d4 100644
--- a/src/libs/sqlite/sqlitereadwritestatement.h
+++ b/src/libs/sqlite/sqlitereadwritestatement.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEREADWRITESTATEMENT_H
-#define SQLITEREADWRITESTATEMENT_H
+#pragma once
 
 #include "sqlitestatement.h"
 
@@ -49,5 +48,3 @@ public:
     using SqliteStatement::toValue;
     using SqliteStatement::execute;
 };
-
-#endif // SQLITEREADWRITESTATEMENT_H
diff --git a/src/libs/sqlite/sqlitestatement.h b/src/libs/sqlite/sqlitestatement.h
index 76762ef284..4cdf5ac262 100644
--- a/src/libs/sqlite/sqlitestatement.h
+++ b/src/libs/sqlite/sqlitestatement.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITESTATEMENT_H
-#define SQLITESTATEMENT_H
+#pragma once
 
 #include "sqliteglobal.h"
 
@@ -127,5 +126,3 @@ private:
     int columnCount_;
     mutable bool isReadyToFetchValues;
 };
-
-#endif // SQLITESTATEMENT_H
diff --git a/src/libs/sqlite/sqlitetable.h b/src/libs/sqlite/sqlitetable.h
index c945b96781..16a0661909 100644
--- a/src/libs/sqlite/sqlitetable.h
+++ b/src/libs/sqlite/sqlitetable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITETABLE_H
-#define SQLITETABLE_H
+#pragma once
 
 #include "sqliteglobal.h"
 #include "tablewriteworkerproxy.h"
@@ -75,5 +74,3 @@ private:
     SqliteDatabase *sqliteDatabase;
     bool withoutRowId;
 };
-
-#endif // SQLITETABLE_H
diff --git a/src/libs/sqlite/sqlitetransaction.h b/src/libs/sqlite/sqlitetransaction.h
index 90f83360ea..3ff6c8c739 100644
--- a/src/libs/sqlite/sqlitetransaction.h
+++ b/src/libs/sqlite/sqlitetransaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITETRANSACTION_H
-#define SQLITETRANSACTION_H
+#pragma once
 
 #include "sqliteglobal.h"
 
@@ -60,6 +59,3 @@ public:
     SqliteExclusiveTransaction();
 
 };
-
-
-#endif // SQLITETRANSACTION_H
diff --git a/src/libs/sqlite/sqliteworkerthread.h b/src/libs/sqlite/sqliteworkerthread.h
index 9f0d640483..b76852434a 100644
--- a/src/libs/sqlite/sqliteworkerthread.h
+++ b/src/libs/sqlite/sqliteworkerthread.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEWORKERTHREAD_H
-#define SQLITEWORKERTHREAD_H
+#pragma once
 
 #include <QMutex>
 #include <QPointer>
@@ -48,5 +47,3 @@ private:
     mutable QWaitCondition connectionChanged;
     QPointer<SqliteDatabaseConnection> connection;
 };
-
-#endif // SQLITEWORKERTHREAD_H
diff --git a/src/libs/sqlite/sqlitewritestatement.h b/src/libs/sqlite/sqlitewritestatement.h
index cf623afb76..abfb27d741 100644
--- a/src/libs/sqlite/sqlitewritestatement.h
+++ b/src/libs/sqlite/sqlitewritestatement.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLITEWRITESTATEMENT_H
-#define SQLITEWRITESTATEMENT_H
+#pragma once
 
 #include "sqlitestatement.h"
 
@@ -47,5 +46,3 @@ public:
 protected:
     void checkIsWritableStatement();
 };
-
-#endif // SQLITEWRITESTATEMENT_H
diff --git a/src/libs/sqlite/sqlstatementbuilder.h b/src/libs/sqlite/sqlstatementbuilder.h
index 674089d19b..6bc092900e 100644
--- a/src/libs/sqlite/sqlstatementbuilder.h
+++ b/src/libs/sqlite/sqlstatementbuilder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLSTATEMENTBUILDER_H
-#define SQLSTATEMENTBUILDER_H
+#pragma once
 
 #include "utf8string.h"
 
@@ -77,5 +76,3 @@ private:
     mutable Utf8String sqlStatement_;
     mutable std::vector<BindingPair> bindings;
 };
-
-#endif // SQLSTATEMENTBUILDER_H
diff --git a/src/libs/sqlite/sqlstatementbuilderexception.h b/src/libs/sqlite/sqlstatementbuilderexception.h
index 104e12d3e5..17e215ad4f 100644
--- a/src/libs/sqlite/sqlstatementbuilderexception.h
+++ b/src/libs/sqlite/sqlstatementbuilderexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SQLSTATEMENTBUILDEREXCEPTION_H
-#define SQLSTATEMENTBUILDEREXCEPTION_H
+#pragma once
 
 #include "sqliteexception.h"
 
@@ -33,5 +32,3 @@ class SQLITE_EXPORT SqlStatementBuilderException : public SqliteException
 public:
     SqlStatementBuilderException(const char *whatErrorHasHappen, const char *errorMessage = 0);
 };
-
-#endif // SQLSTATEMENTBUILDEREXCEPTION_H
diff --git a/src/libs/sqlite/tablewriteworker.h b/src/libs/sqlite/tablewriteworker.h
index 26f541a987..8ae95c44c3 100644
--- a/src/libs/sqlite/tablewriteworker.h
+++ b/src/libs/sqlite/tablewriteworker.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNAL_TABLEWRITEWORKER_H
-#define INTERNAL_TABLEWRITEWORKER_H
+#pragma once
 
 #include "createtablecommand.h"
 
@@ -47,5 +46,3 @@ signals:
 };
 
 } // namespace Internal
-
-#endif // INTERNAL_TABLEWRITEWORKER_H
diff --git a/src/libs/sqlite/tablewriteworkerproxy.h b/src/libs/sqlite/tablewriteworkerproxy.h
index cff996b70e..0bf481e69d 100644
--- a/src/libs/sqlite/tablewriteworkerproxy.h
+++ b/src/libs/sqlite/tablewriteworkerproxy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNAL_TABLEWRITEWORKERPROXY_H
-#define INTERNAL_TABLEWRITEWORKERPROXY_H
+#pragma once
 
 #include "createtablecommand.h"
 
@@ -62,5 +61,3 @@ private:
 };
 
 } // namespace Internal
-
-#endif // INTERNAL_TABLEWRITEWORKERPROXY_H
diff --git a/src/libs/sqlite/utf8string.h b/src/libs/sqlite/utf8string.h
index 15129c255c..26bf354e24 100644
--- a/src/libs/sqlite/utf8string.h
+++ b/src/libs/sqlite/utf8string.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTF8STRING_H
-#define UTF8STRING_H
+#pragma once
 
 #include "sqliteglobal.h"
 
@@ -127,5 +126,3 @@ SQLITE_EXPORT uint qHash(const Utf8String &utf8String);
 #define Utf8StringLiteral(str) Utf8String::fromByteArray(QByteArrayLiteral(str))
 
 Q_DECLARE_METATYPE(Utf8String)
-
-#endif // UTF8STRING_H
diff --git a/src/libs/sqlite/utf8stringvector.h b/src/libs/sqlite/utf8stringvector.h
index d68f68b811..7d77e283d0 100644
--- a/src/libs/sqlite/utf8stringvector.h
+++ b/src/libs/sqlite/utf8stringvector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTF8STRINGVECTOR_H
-#define UTF8STRINGVECTOR_H
+#pragma once
 
 #include "sqliteglobal.h"
 #include "utf8string.h"
@@ -69,5 +68,3 @@ SQLITE_EXPORT QDebug operator<<(QDebug debug, const Utf8StringVector &textVector
 SQLITE_EXPORT void PrintTo(const Utf8StringVector &textVector, ::std::ostream* os);
 
 Q_DECLARE_METATYPE(Utf8StringVector)
-
-#endif // UTF8STRINGVECTOR_H
diff --git a/src/libs/ssh/sftpchannel.h b/src/libs/ssh/sftpchannel.h
index 0cc5579f0d..78857459ee 100644
--- a/src/libs/ssh/sftpchannel.h
+++ b/src/libs/ssh/sftpchannel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPCHANNEL_H
-#define SFTPCHANNEL_H
+#pragma once
 
 #include "sftpdefs.h"
 #include "sftpincomingpacket_p.h"
@@ -102,5 +101,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // SFTPCHANNEL_H
diff --git a/src/libs/ssh/sftpchannel_p.h b/src/libs/ssh/sftpchannel_p.h
index a5769abba0..6ab1c3a2db 100644
--- a/src/libs/ssh/sftpchannel_p.h
+++ b/src/libs/ssh/sftpchannel_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPCHANNEL_P_H
-#define SFTPCHANNEL_P_H
+#pragma once
 
 #include "sftpdefs.h"
 #include "sftpincomingpacket_p.h"
@@ -123,5 +122,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SFTPCHANNEL_P_H
diff --git a/src/libs/ssh/sftpdefs.h b/src/libs/ssh/sftpdefs.h
index 08813fa750..71d2d6dd30 100644
--- a/src/libs/ssh/sftpdefs.h
+++ b/src/libs/ssh/sftpdefs.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPDEFS_H
-#define SFTPDEFS_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -58,5 +57,3 @@ public:
 };
 
 } // namespace QSsh
-
-#endif // SFTPDEFS_H
diff --git a/src/libs/ssh/sftpfilesystemmodel.h b/src/libs/ssh/sftpfilesystemmodel.h
index 344a4b0989..0dc1401fe6 100644
--- a/src/libs/ssh/sftpfilesystemmodel.h
+++ b/src/libs/ssh/sftpfilesystemmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPFILESYSTEMMODEL_H
-#define SFTPFILESYSTEMMODEL_H
+#pragma once
 
 #include "sftpdefs.h"
 
@@ -100,5 +99,3 @@ private:
 };
 
 } // namespace QSsh;
-
-#endif // SFTPFILESYSTEMMODEL_H
diff --git a/src/libs/ssh/sftpincomingpacket_p.h b/src/libs/ssh/sftpincomingpacket_p.h
index da56f5ffd9..fe372e30fb 100644
--- a/src/libs/ssh/sftpincomingpacket_p.h
+++ b/src/libs/ssh/sftpincomingpacket_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPINCOMINGPACKET_P_H
-#define SFTPINCOMINGPACKET_P_H
+#pragma once
 
 #include "sftppacket_p.h"
 
@@ -103,5 +102,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SFTPINCOMINGPACKET_P_H
diff --git a/src/libs/ssh/sftpoperation_p.h b/src/libs/ssh/sftpoperation_p.h
index bf3831e111..3ee703f666 100644
--- a/src/libs/ssh/sftpoperation_p.h
+++ b/src/libs/ssh/sftpoperation_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPOPERATION_P_H
-#define SFTPOPERATION_P_H
+#pragma once
 
 #include "sftpdefs.h"
 
@@ -243,5 +242,3 @@ struct SftpUploadDir
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SFTPOPERATION_P_H
diff --git a/src/libs/ssh/sftpoutgoingpacket_p.h b/src/libs/ssh/sftpoutgoingpacket_p.h
index fb0e1a145e..0fcc67c151 100644
--- a/src/libs/ssh/sftpoutgoingpacket_p.h
+++ b/src/libs/ssh/sftpoutgoingpacket_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPOUTGOINGPACKET_P_H
-#define SFTPOUTGOINGPACKET_P_H
+#pragma once
 
 #include "sftppacket_p.h"
 #include "sftpdefs.h"
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SFTPOUTGOINGPACKET_P_H
diff --git a/src/libs/ssh/sftppacket_p.h b/src/libs/ssh/sftppacket_p.h
index 63e26a279e..b99f7b36d6 100644
--- a/src/libs/ssh/sftppacket_p.h
+++ b/src/libs/ssh/sftppacket_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SFTPPACKET_P_H
-#define SFTPPACKET_P_H
+#pragma once
 
 #include <QByteArray>
 #include <QList>
@@ -108,5 +107,3 @@ protected:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SFTPPACKET_P_H
diff --git a/src/libs/ssh/ssh_global.h b/src/libs/ssh/ssh_global.h
index 4ac4fedaa3..63cfeeaf8c 100644
--- a/src/libs/ssh/ssh_global.h
+++ b/src/libs/ssh/ssh_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSH_GLOBAL_H
-#define SSH_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -38,5 +37,3 @@
 #define QSSH_ASSERT(cond) do { if (!(cond)) { QSSH_PRINT_WARNING; } } while (false)
 #define QSSH_ASSERT_AND_RETURN(cond) do { if (!(cond)) { QSSH_PRINT_WARNING; return; } } while (false)
 #define QSSH_ASSERT_AND_RETURN_VALUE(cond, value) do { if (!(cond)) { QSSH_PRINT_WARNING; return value; } } while (false)
-
-#endif // SSH_GLOBAL_H
diff --git a/src/libs/ssh/sshbotanconversions_p.h b/src/libs/ssh/sshbotanconversions_p.h
index 6213c19881..30849ad25c 100644
--- a/src/libs/ssh/sshbotanconversions_p.h
+++ b/src/libs/ssh/sshbotanconversions_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHBOTANCONVERSIONS_P_H
-#define SSHBOTANCONVERSIONS_P_H
+#pragma once
 
 #include "sshcapabilities_p.h"
 #include "sshexception_p.h"
@@ -131,5 +130,3 @@ inline quint32 botanHMacKeyLen(const QByteArray &rfcAlgoName)
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHBOTANCONVERSIONS_P_H
diff --git a/src/libs/ssh/sshcapabilities_p.h b/src/libs/ssh/sshcapabilities_p.h
index 60e043e3ee..46341681b1 100644
--- a/src/libs/ssh/sshcapabilities_p.h
+++ b/src/libs/ssh/sshcapabilities_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CAPABILITIES_P_H
-#define CAPABILITIES_P_H
+#pragma once
 
 #include <QByteArray>
 #include <QList>
@@ -82,5 +81,3 @@ public:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // CAPABILITIES_P_H
diff --git a/src/libs/ssh/sshchannel_p.h b/src/libs/ssh/sshchannel_p.h
index d1b92dc83e..a55567708f 100644
--- a/src/libs/ssh/sshchannel_p.h
+++ b/src/libs/ssh/sshchannel_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHCHANNEL_P_H
-#define SSHCHANNEL_P_H
+#pragma once
 
 #include <QByteArray>
 #include <QObject>
@@ -116,5 +115,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHCHANNEL_P_H
diff --git a/src/libs/ssh/sshchannelmanager_p.h b/src/libs/ssh/sshchannelmanager_p.h
index f36b3a7cf1..9f2865e4f3 100644
--- a/src/libs/ssh/sshchannelmanager_p.h
+++ b/src/libs/ssh/sshchannelmanager_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHCHANNELMANAGER_P_H
-#define SSHCHANNELMANAGER_P_H
+#pragma once
 
 #include <QHash>
 #include <QObject>
@@ -91,5 +90,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHCHANNELMANAGER_P_H
diff --git a/src/libs/ssh/sshconnection.h b/src/libs/ssh/sshconnection.h
index 6b72c524ef..136c91c199 100644
--- a/src/libs/ssh/sshconnection.h
+++ b/src/libs/ssh/sshconnection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHCONNECTION_H
-#define SSHCONNECTION_H
+#pragma once
 
 #include "ssherrors.h"
 #include "sshhostkeydatabase.h"
@@ -141,5 +140,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // SSHCONNECTION_H
diff --git a/src/libs/ssh/sshconnection_p.h b/src/libs/ssh/sshconnection_p.h
index a137276092..06eb959294 100644
--- a/src/libs/ssh/sshconnection_p.h
+++ b/src/libs/ssh/sshconnection_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHCONNECTION_P_H
-#define SSHCONNECTION_P_H
+#pragma once
 
 #include "sshconnection.h"
 #include "sshexception_p.h"
@@ -172,5 +171,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHCONNECTION_P_H
diff --git a/src/libs/ssh/sshconnectionmanager.h b/src/libs/ssh/sshconnectionmanager.h
index e3e0c93451..87d6c50145 100644
--- a/src/libs/ssh/sshconnectionmanager.h
+++ b/src/libs/ssh/sshconnectionmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHCONNECTIONMANAGER_H
-#define SSHCONNECTIONMANAGER_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -40,5 +39,3 @@ QSSH_EXPORT void releaseConnection(SshConnection *connection);
 QSSH_EXPORT void forceNewConnection(const SshConnectionParameters &sshParams);
 
 } // namespace QSsh
-
-#endif // SSHCONNECTIONMANAGER_H
diff --git a/src/libs/ssh/sshcryptofacility_p.h b/src/libs/ssh/sshcryptofacility_p.h
index ac5e85d3fb..db008207d1 100644
--- a/src/libs/ssh/sshcryptofacility_p.h
+++ b/src/libs/ssh/sshcryptofacility_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHCRYPTOFACILITY_P_H
-#define SSHCRYPTOFACILITY_P_H
+#pragma once
 
 #include <botan/botan.h>
 
@@ -137,5 +136,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHCRYPTOFACILITY_P_H
diff --git a/src/libs/ssh/sshdirecttcpiptunnel.h b/src/libs/ssh/sshdirecttcpiptunnel.h
index 9f831ee26a..e242629d6c 100644
--- a/src/libs/ssh/sshdirecttcpiptunnel.h
+++ b/src/libs/ssh/sshdirecttcpiptunnel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef  SSHDIRECTTCPIPTUNNEL_H
-#define  SSHDIRECTTCPIPTUNNEL_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -79,5 +78,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // SSHDIRECTTCPIPTUNNEL_H
diff --git a/src/libs/ssh/sshdirecttcpiptunnel_p.h b/src/libs/ssh/sshdirecttcpiptunnel_p.h
index 438eb71ed0..3d665c0711 100644
--- a/src/libs/ssh/sshdirecttcpiptunnel_p.h
+++ b/src/libs/ssh/sshdirecttcpiptunnel_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHDIRECTTCPIPTUNNEL_P_H
-#define SSHDIRECTTCPIPTUNNEL_P_H
+#pragma once
 
 #include "sshchannel_p.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHDIRECTTCPIPTUNNEL_P_H
diff --git a/src/libs/ssh/ssherrors.h b/src/libs/ssh/ssherrors.h
index a178f92ea8..4c85e071cf 100644
--- a/src/libs/ssh/ssherrors.h
+++ b/src/libs/ssh/ssherrors.h
@@ -23,7 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHERRORS_P_H
+#pragma once
 #define SSHERRORS_P_H
 
 namespace QSsh {
@@ -35,5 +35,3 @@ enum SshError {
 };
 
 } // namespace QSsh
-
-#endif // SSHERRORS_P_H
diff --git a/src/libs/ssh/sshexception_p.h b/src/libs/ssh/sshexception_p.h
index 9becda115c..b51ce4b04c 100644
--- a/src/libs/ssh/sshexception_p.h
+++ b/src/libs/ssh/sshexception_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHEXCEPTION_P_H
-#define SSHEXCEPTION_P_H
+#pragma once
 
 #include "ssherrors.h"
 
@@ -81,5 +80,3 @@ struct SshClientException
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHEXCEPTION_P_H
diff --git a/src/libs/ssh/sshhostkeydatabase.h b/src/libs/ssh/sshhostkeydatabase.h
index 258087f39f..bd58ab86b5 100644
--- a/src/libs/ssh/sshhostkeydatabase.h
+++ b/src/libs/ssh/sshhostkeydatabase.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHHOSTKEYDATABASE_H
-#define SSHHOSTKEYDATABASE_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // Include guard.
diff --git a/src/libs/ssh/sshincomingpacket_p.h b/src/libs/ssh/sshincomingpacket_p.h
index 1bea9369f6..5729108fea 100644
--- a/src/libs/ssh/sshincomingpacket_p.h
+++ b/src/libs/ssh/sshincomingpacket_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHINCOMINGPACKET_P_H
-#define SSHINCOMINGPACKET_P_H
+#pragma once
 
 #include "sshpacket_p.h"
 
@@ -196,5 +195,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHINCOMINGPACKET_P_H
diff --git a/src/libs/ssh/sshkeycreationdialog.h b/src/libs/ssh/sshkeycreationdialog.h
index 5d5957ef9f..adeaae0396 100644
--- a/src/libs/ssh/sshkeycreationdialog.h
+++ b/src/libs/ssh/sshkeycreationdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHKEYCREATIONDIALOG_H
-#define SSHKEYCREATIONDIALOG_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif  // SSHKEYCREATIONDIALOG_H
diff --git a/src/libs/ssh/sshkeyexchange_p.h b/src/libs/ssh/sshkeyexchange_p.h
index e4fca79cfa..b56597b6df 100644
--- a/src/libs/ssh/sshkeyexchange_p.h
+++ b/src/libs/ssh/sshkeyexchange_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHKEYEXCHANGE_P_H
-#define SSHKEYEXCHANGE_P_H
+#pragma once
 
 #include "sshconnection.h"
 
@@ -92,5 +91,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHKEYEXCHANGE_P_H
diff --git a/src/libs/ssh/sshkeygenerator.h b/src/libs/ssh/sshkeygenerator.h
index c82b2401f8..483614429e 100644
--- a/src/libs/ssh/sshkeygenerator.h
+++ b/src/libs/ssh/sshkeygenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHKEYGENERATOR_H
-#define SSHKEYGENERATOR_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // SSHKEYGENERATOR_H
diff --git a/src/libs/ssh/sshkeypasswordretriever_p.h b/src/libs/ssh/sshkeypasswordretriever_p.h
index 084e62594b..15301feb67 100644
--- a/src/libs/ssh/sshkeypasswordretriever_p.h
+++ b/src/libs/ssh/sshkeypasswordretriever_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef KEYPASSWORDRETRIEVER_H
-#define KEYPASSWORDRETRIEVER_H
+#pragma once
 
 #include <botan/botan.h>
 
@@ -42,5 +41,3 @@ public:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // KEYPASSWORDRETRIEVER_H
diff --git a/src/libs/ssh/sshlogging_p.h b/src/libs/ssh/sshlogging_p.h
index 7955efe982..07815313e5 100644
--- a/src/libs/ssh/sshlogging_p.h
+++ b/src/libs/ssh/sshlogging_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHLOGGING_P_H
-#define SSHLOGGING_P_H
+#pragma once
 
 #include <QLoggingCategory>
 
@@ -33,5 +32,3 @@ namespace Internal {
 Q_DECLARE_LOGGING_CATEGORY(sshLog)
 } // namespace Internal
 } // namespace QSsh
-
-#endif // Include guard
diff --git a/src/libs/ssh/sshoutgoingpacket_p.h b/src/libs/ssh/sshoutgoingpacket_p.h
index 8b892038c3..e68b213260 100644
--- a/src/libs/ssh/sshoutgoingpacket_p.h
+++ b/src/libs/ssh/sshoutgoingpacket_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHOUTGOINGPACKET_P_H
-#define SSHOUTGOINGPACKET_P_H
+#pragma once
 
 #include "sshpacket_p.h"
 
@@ -106,5 +105,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHOUTGOINGPACKET_P_H
diff --git a/src/libs/ssh/sshpacket_p.h b/src/libs/ssh/sshpacket_p.h
index 6171a12618..64fb65f7ab 100644
--- a/src/libs/ssh/sshpacket_p.h
+++ b/src/libs/ssh/sshpacket_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHPACKET_P_H
-#define SSHPACKET_P_H
+#pragma once
 
 #include "sshexception_p.h"
 
@@ -139,5 +138,3 @@ protected:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHPACKET_P_H
diff --git a/src/libs/ssh/sshpacketparser_p.h b/src/libs/ssh/sshpacketparser_p.h
index 2e41418aec..8dd70511d2 100644
--- a/src/libs/ssh/sshpacketparser_p.h
+++ b/src/libs/ssh/sshpacketparser_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHPACKETPARSER_P_H
-#define SSHPACKETPARSER_P_H
+#pragma once
 
 #include <botan/botan.h>
 
@@ -73,5 +72,3 @@ public:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHPACKETPARSER_P_H
diff --git a/src/libs/ssh/sshpseudoterminal.h b/src/libs/ssh/sshpseudoterminal.h
index 3838e53f91..827d6449e2 100644
--- a/src/libs/ssh/sshpseudoterminal.h
+++ b/src/libs/ssh/sshpseudoterminal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHPSEUDOTERMINAL_H
-#define SSHPSEUDOTERMINAL_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -109,5 +108,3 @@ class QSSH_EXPORT SshPseudoTerminal
 };
 
 } // namespace QSsh
-
-#endif // SSHPSEUDOTERMINAL_H
diff --git a/src/libs/ssh/sshremoteprocess.h b/src/libs/ssh/sshremoteprocess.h
index b65338bbd8..cd54a03ede 100644
--- a/src/libs/ssh/sshremoteprocess.h
+++ b/src/libs/ssh/sshremoteprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHREMOTEPROCESS_H
-#define SSHREMOTEPROCESS_H
+#pragma once
 
 #include "ssh_global.h"
 
@@ -120,5 +119,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // SSHREMOTEPROCESS_H
diff --git a/src/libs/ssh/sshremoteprocess_p.h b/src/libs/ssh/sshremoteprocess_p.h
index e4eacea415..edf0648329 100644
--- a/src/libs/ssh/sshremoteprocess_p.h
+++ b/src/libs/ssh/sshremoteprocess_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHREMOTEPROCESS_P_H
-#define SSHREMOTEPROCESS_P_H
+#pragma once
 
 #include "sshpseudoterminal.h"
 
@@ -102,5 +101,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHREMOTEPROCESS_P_H
diff --git a/src/libs/ssh/sshremoteprocessrunner.h b/src/libs/ssh/sshremoteprocessrunner.h
index 1d6075560c..a217d0c94c 100644
--- a/src/libs/ssh/sshremoteprocessrunner.h
+++ b/src/libs/ssh/sshremoteprocessrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHREMOTEPROCESSRUNNER_H
-#define SSHREMOTEPROCESSRUNNER_H
+#pragma once
 
 #include "sshconnection.h"
 #include "sshremoteprocess.h"
@@ -83,5 +82,3 @@ private:
 };
 
 } // namespace QSsh
-
-#endif // SSHREMOTEPROCESSRUNNER_H
diff --git a/src/libs/ssh/sshsendfacility_p.h b/src/libs/ssh/sshsendfacility_p.h
index 4921efb380..ba67464476 100644
--- a/src/libs/ssh/sshsendfacility_p.h
+++ b/src/libs/ssh/sshsendfacility_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHSENDFACILITY_P_H
-#define SSHSENDFACILITY_P_H
+#pragma once
 
 #include "sshcryptofacility_p.h"
 #include "sshoutgoingpacket_p.h"
@@ -99,5 +98,3 @@ private:
 
 } // namespace Internal
 } // namespace QSsh
-
-#endif // SSHSENDFACILITY_P_H
diff --git a/src/libs/timeline/timeline_global.h b/src/libs/timeline/timeline_global.h
index 82ac552d92..1b2a560fb4 100644
--- a/src/libs/timeline/timeline_global.h
+++ b/src/libs/timeline/timeline_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINE_GLOBAL_H
-#define TIMELINE_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define TIMELINE_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // TIMELINE_GLOBAL_H
-
diff --git a/src/libs/timeline/timelineabstractrenderer.h b/src/libs/timeline/timelineabstractrenderer.h
index 41df720c42..8ba388e116 100644
--- a/src/libs/timeline/timelineabstractrenderer.h
+++ b/src/libs/timeline/timelineabstractrenderer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEABSTRACTRENDERER_H
-#define TIMELINEABSTRACTRENDERER_H
+#pragma once
 
 #include "timelinezoomcontrol.h"
 #include "timelinemodel.h"
@@ -93,6 +92,3 @@ protected:
 };
 
 } // namespace Timeline
-
-
-#endif // TIMELINEABSTRACTRENDERER_H
diff --git a/src/libs/timeline/timelineabstractrenderer_p.h b/src/libs/timeline/timelineabstractrenderer_p.h
index 7beaa7262b..d2c3917e9d 100644
--- a/src/libs/timeline/timelineabstractrenderer_p.h
+++ b/src/libs/timeline/timelineabstractrenderer_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEABSTRACTRENDERER_P_H
-#define TIMELINEABSTRACTRENDERER_P_H
+#pragma once
 
 #include "timelineabstractrenderer.h"
 
@@ -49,6 +48,3 @@ public:
 };
 
 }
-
-#endif // TIMELINEABSTRACTRENDERER_P_H
-
diff --git a/src/libs/timeline/timelineitemsrenderpass.h b/src/libs/timeline/timelineitemsrenderpass.h
index 7d4044850f..720f1cd9d5 100644
--- a/src/libs/timeline/timelineitemsrenderpass.h
+++ b/src/libs/timeline/timelineitemsrenderpass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEITEMSRENDERPASS_H
-#define TIMELINEITEMSRENDERPASS_H
+#pragma once
 
 #include "timelineabstractrenderer.h"
 #include "timelinerenderpass.h"
@@ -81,5 +80,3 @@ protected:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINEITEMSRENDERPASS_H
diff --git a/src/libs/timeline/timelinemodel.h b/src/libs/timeline/timelinemodel.h
index 83ad4012cc..dd9b6701a7 100644
--- a/src/libs/timeline/timelinemodel.h
+++ b/src/libs/timeline/timelinemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEMODEL_H
-#define TIMELINEMODEL_H
+#pragma once
 
 #include "timeline_global.h"
 #include "timelinerenderpass.h"
@@ -149,5 +148,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINEMODEL_H
diff --git a/src/libs/timeline/timelinemodel_p.h b/src/libs/timeline/timelinemodel_p.h
index 0d775e9eda..dce63be8ed 100644
--- a/src/libs/timeline/timelinemodel_p.h
+++ b/src/libs/timeline/timelinemodel_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEMODEL_P_H
-#define TIMELINEMODEL_P_H
+#pragma once
 
 #include "timelinemodel.h"
 
@@ -146,5 +145,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINEMODEL_P_H
diff --git a/src/libs/timeline/timelinemodelaggregator.h b/src/libs/timeline/timelinemodelaggregator.h
index 6e27dfde60..17e5d78f1a 100644
--- a/src/libs/timeline/timelinemodelaggregator.h
+++ b/src/libs/timeline/timelinemodelaggregator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEMODELAGGREGATOR_H
-#define TIMELINEMODELAGGREGATOR_H
+#pragma once
 
 #include "timelinemodel.h"
 #include "timelinenotesmodel.h"
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINEMODELAGGREGATOR_H
diff --git a/src/libs/timeline/timelinenotesmodel.h b/src/libs/timeline/timelinenotesmodel.h
index 9f4039df58..2a83136704 100644
--- a/src/libs/timeline/timelinenotesmodel.h
+++ b/src/libs/timeline/timelinenotesmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINENOTESMODEL_H
-#define TIMELINENOTESMODEL_H
+#pragma once
 
 #include "timelinemodel.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINENOTESMODEL_H
diff --git a/src/libs/timeline/timelinenotesmodel_p.h b/src/libs/timeline/timelinenotesmodel_p.h
index ec02a19be1..455ee8af69 100644
--- a/src/libs/timeline/timelinenotesmodel_p.h
+++ b/src/libs/timeline/timelinenotesmodel_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINENOTESMODEL_P_H
-#define TIMELINENOTESMODEL_P_H
+#pragma once
 
 #include "timelinenotesmodel.h"
 
@@ -55,6 +54,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINENOTESMODEL_P_H
-
diff --git a/src/libs/timeline/timelinenotesrenderpass.h b/src/libs/timeline/timelinenotesrenderpass.h
index 75f40ddc4f..4eaa341863 100644
--- a/src/libs/timeline/timelinenotesrenderpass.h
+++ b/src/libs/timeline/timelinenotesrenderpass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINENOTESRENDERPASS_H
-#define TIMELINENOTESRENDERPASS_H
+#pragma once
 
 #include "timelineabstractrenderer.h"
 #include <QSGMaterial>
@@ -45,6 +44,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINENOTESRENDERPASS_H
-
diff --git a/src/libs/timeline/timelineoverviewrenderer.h b/src/libs/timeline/timelineoverviewrenderer.h
index 54548db0eb..d5c946dde7 100644
--- a/src/libs/timeline/timelineoverviewrenderer.h
+++ b/src/libs/timeline/timelineoverviewrenderer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEOVERVIEWRENDERER_H
-#define TIMELINEOVERVIEWRENDERER_H
+#pragma once
 
 #include "timelineabstractrenderer.h"
 
@@ -45,5 +44,3 @@ protected:
 } // namespace Timeline
 
 QML_DECLARE_TYPE(Timeline::TimelineOverviewRenderer)
-
-#endif // TIMELINEOVERVIEWRENDERER_H
diff --git a/src/libs/timeline/timelineoverviewrenderer_p.h b/src/libs/timeline/timelineoverviewrenderer_p.h
index bbc79e336e..d45d4d716b 100644
--- a/src/libs/timeline/timelineoverviewrenderer_p.h
+++ b/src/libs/timeline/timelineoverviewrenderer_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEOVERVIEWRENDERER_P_H
-#define TIMELINEOVERVIEWRENDERER_P_H
+#pragma once
 
 #include "timelineoverviewrenderer.h"
 #include "timelineabstractrenderer_p.h"
@@ -42,6 +41,3 @@ public:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINEOVERVIEWRENDERER_P_H
-
diff --git a/src/libs/timeline/timelinerenderer.h b/src/libs/timeline/timelinerenderer.h
index 0c6d877329..bd23b30321 100644
--- a/src/libs/timeline/timelinerenderer.h
+++ b/src/libs/timeline/timelinerenderer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINERENDERER_H
-#define TIMELINERENDERER_H
+#pragma once
 
 #include "timelinezoomcontrol.h"
 #include "timelinemodel.h"
@@ -71,5 +70,3 @@ private:
 } // namespace Timeline
 
 QML_DECLARE_TYPE(Timeline::TimelineRenderer)
-
-#endif // TIMELINERENDERER_H
diff --git a/src/libs/timeline/timelinerenderer_p.h b/src/libs/timeline/timelinerenderer_p.h
index 7ba5dcc685..eccab59f4d 100644
--- a/src/libs/timeline/timelinerenderer_p.h
+++ b/src/libs/timeline/timelinerenderer_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINERENDERER_P_H
-#define TIMELINERENDERER_P_H
+#pragma once
 
 #include "timelinerenderer.h"
 #include "timelineabstractrenderer_p.h"
@@ -66,6 +65,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINERENDERER_P_H
-
diff --git a/src/libs/timeline/timelinerenderpass.h b/src/libs/timeline/timelinerenderpass.h
index 60a77744e4..54dbe34388 100644
--- a/src/libs/timeline/timelinerenderpass.h
+++ b/src/libs/timeline/timelinerenderpass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINERENDERPASS_H
-#define TIMELINERENDERPASS_H
+#pragma once
 
 #include "timeline_global.h"
 #include <QVector>
@@ -54,5 +53,3 @@ public:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINERENDERPASS_H
diff --git a/src/libs/timeline/timelinerenderstate.h b/src/libs/timeline/timelinerenderstate.h
index 7cc0a2313c..c4e44da018 100644
--- a/src/libs/timeline/timelinerenderstate.h
+++ b/src/libs/timeline/timelinerenderstate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINERENDERSTATE_H
-#define TIMELINERENDERSTATE_H
+#pragma once
 
 #include <QSGNode>
 #include "timelinerenderpass.h"
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINERENDERSTATE_H
diff --git a/src/libs/timeline/timelinerenderstate_p.h b/src/libs/timeline/timelinerenderstate_p.h
index e7967a9ac1..d76dd6b3de 100644
--- a/src/libs/timeline/timelinerenderstate_p.h
+++ b/src/libs/timeline/timelinerenderstate_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINERENDERSTATE_P_H
-#define TIMELINERENDERSTATE_P_H
+#pragma once
 
 #include "timelinerenderstate.h"
 
@@ -46,6 +45,3 @@ public:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINERENDERSTATE_P_H
-
diff --git a/src/libs/timeline/timelineselectionrenderpass.h b/src/libs/timeline/timelineselectionrenderpass.h
index 15f43f3284..b66328259b 100644
--- a/src/libs/timeline/timelineselectionrenderpass.h
+++ b/src/libs/timeline/timelineselectionrenderpass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINESELECTIONRENDERPASS_H
-#define TIMELINESELECTIONRENDERPASS_H
+#pragma once
 
 #include "timelineabstractrenderer.h"
 #include "timelinerenderpass.h"
@@ -46,6 +45,3 @@ protected:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINESELECTIONRENDERPASS_H
-
diff --git a/src/libs/timeline/timelinezoomcontrol.h b/src/libs/timeline/timelinezoomcontrol.h
index 57ef9ae511..2236e754f3 100644
--- a/src/libs/timeline/timelinezoomcontrol.h
+++ b/src/libs/timeline/timelinezoomcontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIMELINEZOOMCONTROL_H
-#define TIMELINEZOOMCONTROL_H
+#pragma once
 
 #include "timeline_global.h"
 #include <QTimer>
@@ -117,5 +116,3 @@ protected:
 };
 
 } // namespace Timeline
-
-#endif // TIMELINEZOOMCONTROL_H
diff --git a/src/libs/utils/algorithm.h b/src/libs/utils/algorithm.h
index fbb9eda5be..61a0a5d10f 100644
--- a/src/libs/utils/algorithm.h
+++ b/src/libs/utils/algorithm.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ALGORITHM_H
-#define ALGORITHM_H
+#pragma once
 
 #include <qcompilerdetection.h> // for Q_REQUIRED_RESULT
 
@@ -430,5 +429,3 @@ inline void sort(Container &c, Predicate p)
 }
 
 }
-
-#endif // ALGORITHM_H
diff --git a/src/libs/utils/annotateditemdelegate.h b/src/libs/utils/annotateditemdelegate.h
index 4e054fe25d..c14b1d49d4 100644
--- a/src/libs/utils/annotateditemdelegate.h
+++ b/src/libs/utils/annotateditemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANNOTATEDITEMDELEGATE_H
-#define ANNOTATEDITEMDELEGATE_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -56,5 +55,3 @@ private:
 };
 
 } // Utils
-
-#endif // ANNOTATEDITEMDELEGATE_H
diff --git a/src/libs/utils/ansiescapecodehandler.h b/src/libs/utils/ansiescapecodehandler.h
index 50e3e341bb..0451297621 100644
--- a/src/libs/utils/ansiescapecodehandler.h
+++ b/src/libs/utils/ansiescapecodehandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_ANSIESCAPECODEHANDLER_H
-#define UTILS_ANSIESCAPECODEHANDLER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_ANSIESCAPECODEHANDLER_H
diff --git a/src/libs/utils/appmainwindow.h b/src/libs/utils/appmainwindow.h
index 51e1b72e3c..c93695550d 100644
--- a/src/libs/utils/appmainwindow.h
+++ b/src/libs/utils/appmainwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef APPMAINWINDOW_H
-#define APPMAINWINDOW_H
+#pragma once
 
 #include "utils_global.h"
 #include <QMainWindow>
@@ -54,5 +53,3 @@ private:
 };
 
 } // Utils
-
-#endif // APPMAINWINDOW_H
diff --git a/src/libs/utils/basetreeview.h b/src/libs/utils/basetreeview.h
index ec696ba2d8..390fdba321 100644
--- a/src/libs/utils/basetreeview.h
+++ b/src/libs/utils/basetreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASETREEVIEW_H
-#define BASETREEVIEW_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -72,5 +71,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // BASETREEVIEW_H
diff --git a/src/libs/utils/bracematcher.h b/src/libs/utils/bracematcher.h
index 910c3549ff..e2fa0928d3 100644
--- a/src/libs/utils/bracematcher.h
+++ b/src/libs/utils/bracematcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BRACEMATCHER_H
-#define BRACEMATCHER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 }  // namespace Utils
-
-#endif // BRACEMATCHER_H
diff --git a/src/libs/utils/buildablehelperlibrary.h b/src/libs/utils/buildablehelperlibrary.h
index ab5c99bcdf..c818749f2b 100644
--- a/src/libs/utils/buildablehelperlibrary.h
+++ b/src/libs/utils/buildablehelperlibrary.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BUILDABLEHELPERLIBRARY_H
-#define BUILDABLEHELPERLIBRARY_H
+#pragma once
 
 #include "environment.h"
 #include "fileutils.h"
@@ -79,5 +78,3 @@ public:
 };
 
 }
-
-#endif // BUILDABLEHELPERLIBRARY_H
diff --git a/src/libs/utils/categorysortfiltermodel.h b/src/libs/utils/categorysortfiltermodel.h
index 9956f69149..a0ae25ff69 100644
--- a/src/libs/utils/categorysortfiltermodel.h
+++ b/src/libs/utils/categorysortfiltermodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CATEGORYSORTFILTERMODEL_H
-#define CATEGORYSORTFILTERMODEL_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -42,5 +41,3 @@ protected:
 };
 
 } // Utils
-
-#endif // CATEGORYSORTFILTERMODEL_H
diff --git a/src/libs/utils/changeset.h b/src/libs/utils/changeset.h
index ef2cc559f5..d445237b44 100644
--- a/src/libs/utils/changeset.h
+++ b/src/libs/utils/changeset.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CHANGESET_H
-#define CHANGESET_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -124,5 +123,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // CHANGESET_H
diff --git a/src/libs/utils/checkablemessagebox.h b/src/libs/utils/checkablemessagebox.h
index 7975da1864..c120098e00 100644
--- a/src/libs/utils/checkablemessagebox.h
+++ b/src/libs/utils/checkablemessagebox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CHECKABLEMESSAGEBOX_H
-#define CHECKABLEMESSAGEBOX_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -130,5 +129,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // CHECKABLEMESSAGEBOX_H
diff --git a/src/libs/utils/classnamevalidatinglineedit.h b/src/libs/utils/classnamevalidatinglineedit.h
index f707008a71..f3ba7acc0c 100644
--- a/src/libs/utils/classnamevalidatinglineedit.h
+++ b/src/libs/utils/classnamevalidatinglineedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSNAMEVALIDATINGLINEEDIT_H
-#define CLASSNAMEVALIDATINGLINEEDIT_H
+#pragma once
 
 #include "fancylineedit.h"
 
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // CLASSNAMEVALIDATINGLINEEDIT_H
diff --git a/src/libs/utils/codegeneration.h b/src/libs/utils/codegeneration.h
index 41dadf350c..2738d7b27a 100644
--- a/src/libs/utils/codegeneration.h
+++ b/src/libs/utils/codegeneration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODEGENERATION_H
-#define CODEGENERATION_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -69,5 +68,3 @@ void writeClosingNameSpaces(const QStringList &namespaces,
                             QTextStream &str);
 
 } // namespace Utils
-
-#endif // CODEGENERATION_H
diff --git a/src/libs/utils/completinglineedit.h b/src/libs/utils/completinglineedit.h
index 875262f393..abcced4de3 100644
--- a/src/libs/utils/completinglineedit.h
+++ b/src/libs/utils/completinglineedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPLETINGLINEEDIT_H
-#define COMPLETINGLINEEDIT_H
+#pragma once
 
 #include "utils_global.h"
 #include <QLineEdit>
@@ -44,5 +43,3 @@ protected:
 };
 
 } // namespace Utils
-
-#endif // COMPLETINGLINEEDIT_H
diff --git a/src/libs/utils/completingtextedit.h b/src/libs/utils/completingtextedit.h
index 6d5e937ccf..666e2f21dd 100644
--- a/src/libs/utils/completingtextedit.h
+++ b/src/libs/utils/completingtextedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPLETINGTEXTEDIT_H
-#define COMPLETINGTEXTEDIT_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // COMPLETINGTEXTEDIT_H
diff --git a/src/libs/utils/consoleprocess.h b/src/libs/utils/consoleprocess.h
index d81cdbecff..59a51d98cf 100644
--- a/src/libs/utils/consoleprocess.h
+++ b/src/libs/utils/consoleprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONSOLEPROCESS_H
-#define CONSOLEPROCESS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -135,5 +134,3 @@ private:
 };
 
 } //namespace Utils
-
-#endif
diff --git a/src/libs/utils/consoleprocess_p.h b/src/libs/utils/consoleprocess_p.h
index 8b4e76c850..8fa610a709 100644
--- a/src/libs/utils/consoleprocess_p.h
+++ b/src/libs/utils/consoleprocess_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONSOLEPROCESS_P_H
-#define CONSOLEPROCESS_P_H
+#pragma once
 
 #include "consoleprocess.h"
 #include "environment.h"
@@ -79,5 +78,3 @@ struct ConsoleProcessPrivate {
 };
 
 } //namespace Utils
-
-#endif
diff --git a/src/libs/utils/crumblepath.h b/src/libs/utils/crumblepath.h
index 4bc43e2597..d3d1962535 100644
--- a/src/libs/utils/crumblepath.h
+++ b/src/libs/utils/crumblepath.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CRUMBLEPATH_H
-#define CRUMBLEPATH_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -73,5 +72,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // CRUMBLEPATH_H
diff --git a/src/libs/utils/declarationmacros.h b/src/libs/utils/declarationmacros.h
index 24baaee135..4b7b894544 100644
--- a/src/libs/utils/declarationmacros.h
+++ b/src/libs/utils/declarationmacros.h
@@ -30,4 +30,3 @@
     Class &operator=(const Class&) = delete; \
     Class(Class&&) = delete; \
     Class &operator=(Class&&) = delete;
-
diff --git a/src/libs/utils/detailsbutton.h b/src/libs/utils/detailsbutton.h
index f5754f5d28..3540d8d116 100644
--- a/src/libs/utils/detailsbutton.h
+++ b/src/libs/utils/detailsbutton.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DETAILSBUTTON_H
-#define DETAILSBUTTON_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -80,4 +79,3 @@ private:
     float m_fader;
 };
 } // namespace Utils
-#endif // DETAILSBUTTON_H
diff --git a/src/libs/utils/detailswidget.h b/src/libs/utils/detailswidget.h
index 7170324d7a..5ce8c04f5d 100644
--- a/src/libs/utils/detailswidget.h
+++ b/src/libs/utils/detailswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DETAILSWIDGET_H
-#define DETAILSWIDGET_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -101,5 +100,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // DETAILSWIDGET_H
diff --git a/src/libs/utils/dropsupport.h b/src/libs/utils/dropsupport.h
index 77ec885450..c91f2c5c8a 100644
--- a/src/libs/utils/dropsupport.h
+++ b/src/libs/utils/dropsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_DROPSUPPORT_H
-#define UTILS_DROPSUPPORT_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -105,5 +104,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_DROPSUPPORT_H
diff --git a/src/libs/utils/elfreader.h b/src/libs/utils/elfreader.h
index 3df707c920..fe965a0fc8 100644
--- a/src/libs/utils/elfreader.h
+++ b/src/libs/utils/elfreader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_ELFREADER_H
-#define UTILS_ELFREADER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -189,5 +188,3 @@ public:
 };
 
 } // namespace Utils
-
-#endif // UTILS_ELFREADER_H
diff --git a/src/libs/utils/elidinglabel.h b/src/libs/utils/elidinglabel.h
index 8d7daf5546..fa7bab29d2 100644
--- a/src/libs/utils/elidinglabel.h
+++ b/src/libs/utils/elidinglabel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ELIDINGLABEL_H
-#define ELIDINGLABEL_H
+#pragma once
 
 #include "utils_global.h"
 #include <QLabel>
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // ELIDINGLABEL_H
diff --git a/src/libs/utils/environment.h b/src/libs/utils/environment.h
index 7e01a877a2..c7773179e5 100644
--- a/src/libs/utils/environment.h
+++ b/src/libs/utils/environment.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_ENVIRONMENT_H
-#define UTILS_ENVIRONMENT_H
+#pragma once
 
 #include "fileutils.h"
 #include "hostosinfo.h"
@@ -115,5 +114,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_ENVIRONMENT_H
diff --git a/src/libs/utils/environmentmodel.h b/src/libs/utils/environmentmodel.h
index 0e658e4f02..171c19b8f2 100644
--- a/src/libs/utils/environmentmodel.h
+++ b/src/libs/utils/environmentmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_ENVIRONMENTMODEL_H
-#define UTILS_ENVIRONMENTMODEL_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -76,5 +75,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_ENVIRONMENTMODEL_H
diff --git a/src/libs/utils/execmenu.h b/src/libs/utils/execmenu.h
index 7d5b34bd19..90c3c35673 100644
--- a/src/libs/utils/execmenu.h
+++ b/src/libs/utils/execmenu.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXECMENU_H
-#define EXECMENU_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -39,5 +38,3 @@ namespace Utils {
 QTCREATOR_UTILS_EXPORT QAction *execMenuAtWidget(QMenu *menu, QWidget *widget);
 
 } // namespace Utils
-
-#endif // EXECMENU_H
diff --git a/src/libs/utils/executeondestruction.h b/src/libs/utils/executeondestruction.h
index 71b69c1aa5..1e95af297d 100644
--- a/src/libs/utils/executeondestruction.h
+++ b/src/libs/utils/executeondestruction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXECUTEONDESTRUCTION_H
-#define EXECUTEONDESTRUCTION_H
+#pragma once
 
 #include <functional>
 
@@ -41,5 +40,3 @@ private:
 };
 
 } // Utils
-
-#endif // EXECUTEONDESTRUCTION_H
diff --git a/src/libs/utils/fadingindicator.h b/src/libs/utils/fadingindicator.h
index 31e52ad920..5f4e96436c 100644
--- a/src/libs/utils/fadingindicator.h
+++ b/src/libs/utils/fadingindicator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FADINGINDICATOR_H
-#define FADINGINDICATOR_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -45,6 +44,3 @@ QTCREATOR_UTILS_EXPORT void showPixmap(QWidget *parent, const QString &pixmap);
 
 } // FadingIndicator
 } // Utils
-
-#endif // FADINGINDICATOR_H
-
diff --git a/src/libs/utils/faketooltip.h b/src/libs/utils/faketooltip.h
index ff9cfc3541..3cb5cbeb47 100644
--- a/src/libs/utils/faketooltip.h
+++ b/src/libs/utils/faketooltip.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FAKETOOLTIP_H
-#define FAKETOOLTIP_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -45,5 +44,3 @@ protected:
 };
 
 } // namespace Utils
-
-#endif // FAKETOOLTIP_H
diff --git a/src/libs/utils/fancylineedit.h b/src/libs/utils/fancylineedit.h
index fdc85b273a..9df78961bb 100644
--- a/src/libs/utils/fancylineedit.h
+++ b/src/libs/utils/fancylineedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FANCYLINEEDIT_H
-#define FANCYLINEEDIT_H
+#pragma once
 
 #include "utils_global.h"
 #include "completinglineedit.h"
@@ -182,5 +181,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FANCYLINEEDIT_H
diff --git a/src/libs/utils/fancymainwindow.h b/src/libs/utils/fancymainwindow.h
index 1b1cbde4a1..1960bea384 100644
--- a/src/libs/utils/fancymainwindow.h
+++ b/src/libs/utils/fancymainwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FANCYMAINWINDOW_H
-#define FANCYMAINWINDOW_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -90,5 +89,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FANCYMAINWINDOW_H
diff --git a/src/libs/utils/fileinprojectfinder.h b/src/libs/utils/fileinprojectfinder.h
index d47261939f..4fc3af8ece 100644
--- a/src/libs/utils/fileinprojectfinder.h
+++ b/src/libs/utils/fileinprojectfinder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEINPROJECTFINDER_H
-#define FILEINPROJECTFINDER_H
+#pragma once
 
 #include <utils/utils_global.h>
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FILEINPROJECTFINDER_H
diff --git a/src/libs/utils/filenamevalidatinglineedit.h b/src/libs/utils/filenamevalidatinglineedit.h
index 4fc63a1620..1185723fdf 100644
--- a/src/libs/utils/filenamevalidatinglineedit.h
+++ b/src/libs/utils/filenamevalidatinglineedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILENAMEVALIDATINGLINEEDIT_H
-#define FILENAMEVALIDATINGLINEEDIT_H
+#pragma once
 
 #include "fancylineedit.h"
 
@@ -79,5 +78,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FILENAMEVALIDATINGLINEEDIT_H
diff --git a/src/libs/utils/filesearch.h b/src/libs/utils/filesearch.h
index 39a8fa0661..05cadc261d 100644
--- a/src/libs/utils/filesearch.h
+++ b/src/libs/utils/filesearch.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILESEARCH_H
-#define FILESEARCH_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -178,5 +177,3 @@ QTCREATOR_UTILS_EXPORT QString expandRegExpReplacement(const QString &replaceTex
 QTCREATOR_UTILS_EXPORT QString matchCaseReplacement(const QString &originalText, const QString &replaceText);
 
 } // namespace Utils
-
-#endif // FILESEARCH_H
diff --git a/src/libs/utils/filesystemwatcher.h b/src/libs/utils/filesystemwatcher.h
index 71c5ab64ce..59f5938204 100644
--- a/src/libs/utils/filesystemwatcher.h
+++ b/src/libs/utils/filesystemwatcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILESYSTEMWATCHER_H
-#define FILESYSTEMWATCHER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FILESYSTEMWATCHER_H
diff --git a/src/libs/utils/fileutils.h b/src/libs/utils/fileutils.h
index 286ffd02f7..79f5b9ddac 100644
--- a/src/libs/utils/fileutils.h
+++ b/src/libs/utils/fileutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEUTILS_H
-#define FILEUTILS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -207,5 +206,3 @@ QTCREATOR_UTILS_EXPORT uint qHash(const Utils::FileName &a);
 QT_END_NAMESPACE
 
 Q_DECLARE_METATYPE(Utils::FileName)
-
-#endif // FILEUTILS_H
diff --git a/src/libs/utils/fileutils_mac.h b/src/libs/utils/fileutils_mac.h
index 640a8f8a3f..5b66130274 100644
--- a/src/libs/utils/fileutils_mac.h
+++ b/src/libs/utils/fileutils_mac.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEUTILS_MAC_H
-#define FILEUTILS_MAC_H
+#pragma once
 
 #include <QUrl>
 
@@ -36,6 +35,3 @@ QString normalizePathName(const QString &filePath);
 
 } // Internal
 } // Utils
-
-#endif // FILEUTILS_MAC_H
-
diff --git a/src/libs/utils/filewizardpage.h b/src/libs/utils/filewizardpage.h
index ffcc7dad7e..e0f19d03db 100644
--- a/src/libs/utils/filewizardpage.h
+++ b/src/libs/utils/filewizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEWIZARDPAGE_H
-#define FILEWIZARDPAGE_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FILEWIZARDPAGE_H
diff --git a/src/libs/utils/flowlayout.h b/src/libs/utils/flowlayout.h
index fe727107a9..c76472fafb 100644
--- a/src/libs/utils/flowlayout.h
+++ b/src/libs/utils/flowlayout.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FLOWLAYOUT_H
-#define FLOWLAYOUT_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // FLOWLAYOUT_H
diff --git a/src/libs/utils/headerviewstretcher.h b/src/libs/utils/headerviewstretcher.h
index 2e9190ddeb..e360ff58b1 100644
--- a/src/libs/utils/headerviewstretcher.h
+++ b/src/libs/utils/headerviewstretcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HEADERVIEWSTRETCHER_H
-#define HEADERVIEWSTRETCHER_H
+#pragma once
 
 #include "utils_global.h"
 #include <QObject>
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace Utils
-
-#endif // HEADERVIEWSTRETCHER_H
diff --git a/src/libs/utils/historycompleter.h b/src/libs/utils/historycompleter.h
index eaaca115a1..4ab08f8700 100644
--- a/src/libs/utils/historycompleter.h
+++ b/src/libs/utils/historycompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HISTORYCOMPLETER_H
-#define HISTORYCOMPLETER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // HISTORYCOMPLETER_H
diff --git a/src/libs/utils/hostosinfo.h b/src/libs/utils/hostosinfo.h
index 9991c6605b..72327a5c40 100644
--- a/src/libs/utils/hostosinfo.h
+++ b/src/libs/utils/hostosinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HOSTOSINFO_H
-#define HOSTOSINFO_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -114,5 +113,3 @@ bool HostOsInfo::isAnyUnixHost()
 }
 
 } // namespace Utils
-
-#endif // HOSTOSINFO_H
diff --git a/src/libs/utils/htmldocextractor.h b/src/libs/utils/htmldocextractor.h
index 5b975666d3..f7c82f54a1 100644
--- a/src/libs/utils/htmldocextractor.h
+++ b/src/libs/utils/htmldocextractor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HTMLDOCEXTRACTOR_H
-#define HTMLDOCEXTRACTOR_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -87,5 +86,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // HTMLDOCEXTRACTOR_H
diff --git a/src/libs/utils/icon.h b/src/libs/utils/icon.h
index be012d3fea..8041b838e6 100644
--- a/src/libs/utils/icon.h
+++ b/src/libs/utils/icon.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THEMEHELPER_H
-#define THEMEHELPER_H
+#pragma once
 
 #include "utils_global.h"
 #include "theme/theme.h"
@@ -86,5 +85,3 @@ private:
 } // namespace Utils
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Utils::Icon::IconStyleOptions)
-
-#endif // THEMEHELPER_H
diff --git a/src/libs/utils/itemviews.h b/src/libs/utils/itemviews.h
index 7604bc59bd..5708c6dc4d 100644
--- a/src/libs/utils/itemviews.h
+++ b/src/libs/utils/itemviews.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TREEVIEW_H
-#define TREEVIEW_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -122,7 +121,4 @@ public:
     {}
 };
 
-
-}
-
-#endif // TREEVIEW_H
+} // Utils
diff --git a/src/libs/utils/json.h b/src/libs/utils/json.h
index fe4918230f..09b74d8950 100644
--- a/src/libs/utils/json.h
+++ b/src/libs/utils/json.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSON_H
-#define JSON_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -417,5 +416,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // JSON_H
diff --git a/src/libs/utils/linecolumnlabel.h b/src/libs/utils/linecolumnlabel.h
index 1ae57ad292..4eeb55f257 100644
--- a/src/libs/utils/linecolumnlabel.h
+++ b/src/libs/utils/linecolumnlabel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LINECOLUMNLABEL_H
-#define LINECOLUMNLABEL_H
+#pragma once
 
 #include "utils_global.h"
 #include <QLabel>
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // LINECOLUMNLABEL_H
diff --git a/src/libs/utils/listutils.h b/src/libs/utils/listutils.h
index 2b32073547..a116801176 100644
--- a/src/libs/utils/listutils.h
+++ b/src/libs/utils/listutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LISTUTILS_H
-#define LISTUTILS_H
+#pragma once
 
 #include <QList>
 
@@ -41,5 +40,3 @@ QList<T1> qwConvertList(const QList<T2> &list)
 }
 
 } // namespace Utils
-
-#endif // LISTUTILS_H
diff --git a/src/libs/utils/macroexpander.h b/src/libs/utils/macroexpander.h
index eebb315549..a8fd1afdab 100644
--- a/src/libs/utils/macroexpander.h
+++ b/src/libs/utils/macroexpander.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_MACROEXPANDER_H
-#define UTILS_MACROEXPANDER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -103,5 +102,3 @@ private:
 QTCREATOR_UTILS_EXPORT MacroExpander *globalMacroExpander();
 
 } // namespace Utils
-
-#endif // UTILS_MACROEXPANDER_H
diff --git a/src/libs/utils/mimetypes/mimedatabase.h b/src/libs/utils/mimetypes/mimedatabase.h
index 884d5a7552..7d69cde501 100644
--- a/src/libs/utils/mimetypes/mimedatabase.h
+++ b/src/libs/utils/mimetypes/mimedatabase.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef XMIMEDATABASE_H
-#define XMIMEDATABASE_H
+#pragma once
 
 #include "mimetype.h"
 #include "mimemagicrule_p.h"
@@ -103,5 +102,3 @@ private:
 };
 
 } // Utils
-
-#endif   // MIMEDATABASE_H
diff --git a/src/libs/utils/mimetypes/mimedatabase_p.h b/src/libs/utils/mimetypes/mimedatabase_p.h
index a1cc7c3769..b576cada8f 100644
--- a/src/libs/utils/mimetypes/mimedatabase_p.h
+++ b/src/libs/utils/mimetypes/mimedatabase_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMEDATABASE_P_H
-#define MIMEDATABASE_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -101,5 +100,3 @@ public:
 
 } // Internal
 } // Utils
-
-#endif   // MIMEDATABASE_P_H
diff --git a/src/libs/utils/mimetypes/mimeglobpattern_p.h b/src/libs/utils/mimetypes/mimeglobpattern_p.h
index 5816a634e6..863c432653 100644
--- a/src/libs/utils/mimetypes/mimeglobpattern_p.h
+++ b/src/libs/utils/mimetypes/mimeglobpattern_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMEGLOBPATTERN_P_H
-#define MIMEGLOBPATTERN_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -153,5 +152,3 @@ public:
 
 } // Internal
 } // Utils
-
-#endif // MIMEGLOBPATTERN_P_H
diff --git a/src/libs/utils/mimetypes/mimemagicrule_p.h b/src/libs/utils/mimetypes/mimemagicrule_p.h
index 2d55619e46..e1c8017903 100644
--- a/src/libs/utils/mimetypes/mimemagicrule_p.h
+++ b/src/libs/utils/mimetypes/mimemagicrule_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMEMAGICRULE_P_H
-#define MIMEMAGICRULE_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -107,5 +106,3 @@ private:
 QT_BEGIN_NAMESPACE
 Q_DECLARE_TYPEINFO(Utils::Internal::MimeMagicRule, Q_MOVABLE_TYPE);
 QT_END_NAMESPACE
-
-#endif // MIMEMAGICRULE_H
diff --git a/src/libs/utils/mimetypes/mimemagicrulematcher_p.h b/src/libs/utils/mimetypes/mimemagicrulematcher_p.h
index f57cfd5a62..dd54f515d9 100644
--- a/src/libs/utils/mimetypes/mimemagicrulematcher_p.h
+++ b/src/libs/utils/mimetypes/mimemagicrulematcher_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMEMAGICRULEMATCHER_P_H
-#define MIMEMAGICRULEMATCHER_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -86,5 +85,3 @@ private:
 
 } // Internal
 } // Utils
-
-#endif // MIMEMAGICRULEMATCHER_P_H
diff --git a/src/libs/utils/mimetypes/mimeprovider_p.h b/src/libs/utils/mimetypes/mimeprovider_p.h
index 44a7bbdd52..267a54fbaf 100644
--- a/src/libs/utils/mimetypes/mimeprovider_p.h
+++ b/src/libs/utils/mimetypes/mimeprovider_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMEPROVIDER_P_H
-#define MIMEPROVIDER_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -191,5 +190,3 @@ private:
 
 } // Internal
 } // Utils
-
-#endif // MIMEPROVIDER_P_H
diff --git a/src/libs/utils/mimetypes/mimetype.h b/src/libs/utils/mimetypes/mimetype.h
index 39ce6a7753..8b47696d7d 100644
--- a/src/libs/utils/mimetypes/mimetype.h
+++ b/src/libs/utils/mimetypes/mimetype.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMETYPE_H
-#define MIMETYPE_H
+#pragma once
 
 #include <utils/utils_global.h>
 
@@ -132,5 +131,3 @@ class QDebug;
 QTCREATOR_UTILS_EXPORT QDebug operator<<(QDebug debug, const Utils::MimeType &mime);
 QT_END_NAMESPACE
 #endif
-
-#endif   // MIMETYPE_H
diff --git a/src/libs/utils/mimetypes/mimetype_p.h b/src/libs/utils/mimetypes/mimetype_p.h
index 5e2260a7f4..c143a0d01b 100644
--- a/src/libs/utils/mimetypes/mimetype_p.h
+++ b/src/libs/utils/mimetypes/mimetype_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMETYPE_P_H
-#define MIMETYPE_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -119,5 +118,3 @@ public:
     } \
     QT_END_NAMESPACE
 #endif
-
-#endif   // MIMETYPE_P_H
diff --git a/src/libs/utils/mimetypes/mimetypeparser_p.h b/src/libs/utils/mimetypes/mimetypeparser_p.h
index 1cae1fc9d9..2cc47fd30c 100644
--- a/src/libs/utils/mimetypes/mimetypeparser_p.h
+++ b/src/libs/utils/mimetypes/mimetypeparser_p.h
@@ -37,8 +37,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMETYPEPARSER_P_H
-#define MIMETYPEPARSER_P_H
+#pragma once
 
 //
 //  W A R N I N G
@@ -130,5 +129,3 @@ private:
 
 } // Internal
 } // Utils
-
-#endif // MIMETYPEPARSER_P_H
diff --git a/src/libs/utils/navigationtreeview.h b/src/libs/utils/navigationtreeview.h
index 6222dd7bed..4718a96b3e 100644
--- a/src/libs/utils/navigationtreeview.h
+++ b/src/libs/utils/navigationtreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATIONTREEVIEW_H
-#define NAVIGATIONTREEVIEW_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -45,5 +44,3 @@ protected:
 };
 
 } // Utils
-
-#endif // NAVIGATIONTREEVIEW_H
diff --git a/src/libs/utils/networkaccessmanager.h b/src/libs/utils/networkaccessmanager.h
index a258e1c4e8..d1f92379c5 100644
--- a/src/libs/utils/networkaccessmanager.h
+++ b/src/libs/utils/networkaccessmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NETWORKACCESSMANAGER_H
-#define NETWORKACCESSMANAGER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -48,5 +47,3 @@ protected:
 
 
 } // namespace utils
-
-#endif // NETWORKACCESSMANAGER_H
diff --git a/src/libs/utils/newclasswidget.h b/src/libs/utils/newclasswidget.h
index cbda607b5e..18a5029f5b 100644
--- a/src/libs/utils/newclasswidget.h
+++ b/src/libs/utils/newclasswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NEWCLASSWIDGET_H
-#define NEWCLASSWIDGET_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -166,5 +165,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // NEWCLASSWIDGET_H
diff --git a/src/libs/utils/osspecificaspects.h b/src/libs/utils/osspecificaspects.h
index 04fba72223..15609794c9 100644
--- a/src/libs/utils/osspecificaspects.h
+++ b/src/libs/utils/osspecificaspects.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTC_OSSPECIFICASPECTS_H
-#define QTC_OSSPECIFICASPECTS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // Include guard.
diff --git a/src/libs/utils/outputformat.h b/src/libs/utils/outputformat.h
index a3ce484323..6a5f495de0 100644
--- a/src/libs/utils/outputformat.h
+++ b/src/libs/utils/outputformat.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTPUTFORMAT_H
-#define OUTPUTFORMAT_H
+#pragma once
 
 namespace Utils {
 
@@ -41,5 +40,3 @@ enum OutputFormat
 };
 
 } // namespace Utils
-
-#endif // OUTPUTFORMATR_H
diff --git a/src/libs/utils/outputformatter.h b/src/libs/utils/outputformatter.h
index ecb6ba9580..def0172f42 100644
--- a/src/libs/utils/outputformatter.h
+++ b/src/libs/utils/outputformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTPUTFORMATTER_H
-#define OUTPUTFORMATTER_H
+#pragma once
 
 #include "utils_global.h"
 #include "outputformat.h"
@@ -73,5 +72,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // OUTPUTFORMATTER_H
diff --git a/src/libs/utils/overridecursor.h b/src/libs/utils/overridecursor.h
index b29350a9c4..5ca2bb5800 100644
--- a/src/libs/utils/overridecursor.h
+++ b/src/libs/utils/overridecursor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OVERRIDECURSOR_H
-#define OVERRIDECURSOR_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -45,5 +44,3 @@ private:
 };
 
 }
-
-#endif // OVERRIDECURSOR_H
diff --git a/src/libs/utils/parameteraction.h b/src/libs/utils/parameteraction.h
index f5743b383c..a402844987 100644
--- a/src/libs/utils/parameteraction.h
+++ b/src/libs/utils/parameteraction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PARAMETERACTION_H
-#define PARAMETERACTION_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // PARAMETERACTION_H
diff --git a/src/libs/utils/pathchooser.h b/src/libs/utils/pathchooser.h
index 1e9ab523ce..17b572310d 100644
--- a/src/libs/utils/pathchooser.h
+++ b/src/libs/utils/pathchooser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PATHCHOOSER_H
-#define PATHCHOOSER_H
+#pragma once
 
 #include "fancylineedit.h"
 #include "fileutils.h"
@@ -178,6 +177,3 @@ private:
 };
 
 } // namespace Utils
-
-
-#endif // PATHCHOOSER_H
diff --git a/src/libs/utils/pathlisteditor.h b/src/libs/utils/pathlisteditor.h
index e95fc1e4f9..8636450406 100644
--- a/src/libs/utils/pathlisteditor.h
+++ b/src/libs/utils/pathlisteditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PATHLISTEDITOR_H
-#define PATHLISTEDITOR_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // PATHLISTEDITOR_H
diff --git a/src/libs/utils/persistentsettings.h b/src/libs/utils/persistentsettings.h
index 6e5fd5c598..e424a5fbc1 100644
--- a/src/libs/utils/persistentsettings.h
+++ b/src/libs/utils/persistentsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PERSISTENTSETTINGS_H
-#define PERSISTENTSETTINGS_H
+#pragma once
 
 #include "fileutils.h"
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // PERSISTENTSETTINGS_H
diff --git a/src/libs/utils/port.h b/src/libs/utils/port.h
index 1fe429aa11..779d5b7524 100644
--- a/src/libs/utils/port.h
+++ b/src/libs/utils/port.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_PORT_H
-#define UTILS_PORT_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -44,5 +43,3 @@ private:
 };
 
 } // Utils
-
-#endif // UTILS_PORT_H
diff --git a/src/libs/utils/portlist.h b/src/libs/utils/portlist.h
index 289a280ca7..21e05a43e5 100644
--- a/src/libs/utils/portlist.h
+++ b/src/libs/utils/portlist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PORTLIST_H
-#define PORTLIST_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // PORTLIST_H
diff --git a/src/libs/utils/progressindicator.h b/src/libs/utils/progressindicator.h
index 98c63fde8c..4fee8b1956 100644
--- a/src/libs/utils/progressindicator.h
+++ b/src/libs/utils/progressindicator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROGRESSINDICATOR_H
-#define PROGRESSINDICATOR_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -72,5 +71,3 @@ private:
 };
 
 } // Utils
-
-#endif // PROGRESSINDICATOR_H
diff --git a/src/libs/utils/projectintropage.h b/src/libs/utils/projectintropage.h
index 4a6798f624..eb26a839c2 100644
--- a/src/libs/utils/projectintropage.h
+++ b/src/libs/utils/projectintropage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROJECTINTROPAGE_H
-#define PROJECTINTROPAGE_H
+#pragma once
 
 #include "utils_global.h"
 #include "wizardpage.h"
@@ -89,5 +88,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // PROJECTINTROPAGE_H
diff --git a/src/libs/utils/proxyaction.h b/src/libs/utils/proxyaction.h
index e2eea9908d..d6187d047e 100644
--- a/src/libs/utils/proxyaction.h
+++ b/src/libs/utils/proxyaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROXYACTION_H
-#define PROXYACTION_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -80,5 +79,3 @@ private:
 } // namespace Utils
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Utils::ProxyAction::Attributes)
-
-#endif // PROXYACTION_H
diff --git a/src/libs/utils/proxycredentialsdialog.h b/src/libs/utils/proxycredentialsdialog.h
index 76b11ce5b4..d18af5b2d5 100644
--- a/src/libs/utils/proxycredentialsdialog.h
+++ b/src/libs/utils/proxycredentialsdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROXYCREDENTIALSDIALOG_H
-#define PROXYCREDENTIALSDIALOG_H
+#pragma once
 
 #include "utils_global.h"
 #include <QDialog>
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // PROXYCREDENTIALSDIALOG_H
diff --git a/src/libs/utils/qtcassert.h b/src/libs/utils/qtcassert.h
index 004c4e0439..544221ee8c 100644
--- a/src/libs/utils/qtcassert.h
+++ b/src/libs/utils/qtcassert.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTC_ASSERT_H
-#define QTC_ASSERT_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -40,6 +39,3 @@ namespace Utils { QTCREATOR_UTILS_EXPORT void writeAssertLocation(const char *ms
 
 #define QTC_ASSERT(cond, action) if (cond) {} else { QTC_ASSERT_STRING(#cond); action; } do {} while (0)
 #define QTC_CHECK(cond) if (cond) {} else { QTC_ASSERT_STRING(#cond); } do {} while (0)
-
-#endif // QTC_ASSERT_H
-
diff --git a/src/libs/utils/qtcolorbutton.h b/src/libs/utils/qtcolorbutton.h
index d22421497e..07b3c63a22 100644
--- a/src/libs/utils/qtcolorbutton.h
+++ b/src/libs/utils/qtcolorbutton.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTCOLORBUTTON_H
-#define QTCOLORBUTTON_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -70,5 +69,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // QTCOLORBUTTON_H
diff --git a/src/libs/utils/qtcprocess.h b/src/libs/utils/qtcprocess.h
index 3a3ba788e9..fed5ad484d 100644
--- a/src/libs/utils/qtcprocess.h
+++ b/src/libs/utils/qtcprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTCPROCESS_H
-#define QTCPROCESS_H
+#pragma once
 
 #include "environment.h"
 
@@ -153,5 +152,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // QTCPROCESS_H
diff --git a/src/libs/utils/reloadpromptutils.h b/src/libs/utils/reloadpromptutils.h
index a5105bc6cb..b01bd25b53 100644
--- a/src/libs/utils/reloadpromptutils.h
+++ b/src/libs/utils/reloadpromptutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RELOADPROMPTUTILS_H
-#define RELOADPROMPTUTILS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -63,5 +62,3 @@ QTCREATOR_UTILS_EXPORT FileDeletedPromptAnswer fileDeletedPrompt(const QString &
                                                                  QWidget *parent);
 
 } // namespace Utils
-
-#endif // RELOADPROMPTUTILS_H
diff --git a/src/libs/utils/runextensions.h b/src/libs/utils/runextensions.h
index bd20b862c4..1fc9005bbb 100644
--- a/src/libs/utils/runextensions.h
+++ b/src/libs/utils/runextensions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RUNEXTENSIONS_H
-#define RUNEXTENSIONS_H
+#pragma once
 
 #include "functiontraits.h"
 #include "utils_global.h"
@@ -509,5 +508,3 @@ runAsync(QThreadPool *pool, Function &&function, Args&&... args)
 }
 
 } // Utils
-
-#endif // RUNEXTENSIONS_H
diff --git a/src/libs/utils/savedaction.h b/src/libs/utils/savedaction.h
index f03150d637..4fb98496b4 100644
--- a/src/libs/utils/savedaction.h
+++ b/src/libs/utils/savedaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SAVED_ACTION_H
-#define SAVED_ACTION_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -103,5 +102,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // SAVED_ACTION_H
diff --git a/src/libs/utils/savefile.h b/src/libs/utils/savefile.h
index 4584d56b05..0be71967fd 100644
--- a/src/libs/utils/savefile.h
+++ b/src/libs/utils/savefile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SAVEFILE_H
-#define SAVEFILE_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // SAVEFILE_H
diff --git a/src/libs/utils/scopedswap.h b/src/libs/utils/scopedswap.h
index 0af542a126..6e996c11f2 100644
--- a/src/libs/utils/scopedswap.h
+++ b/src/libs/utils/scopedswap.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SCOPEDSWAP_H
-#define SCOPEDSWAP_H
+#pragma once
 
 #if !(__cplusplus > 199711L || __GXX_EXPERIMENTAL_CXX0X__ || _MSC_VER >= 1600 || defined( _LIBCPP_VERSION )) || \
     (defined(__GNUC_LIBSTD__) && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402))
@@ -59,5 +58,3 @@ public:
 typedef ScopedSwap<bool> ScopedBoolSwap;
 
 } // Utils namespace
-
-#endif // SCOPEDSWAP_H
diff --git a/src/libs/utils/settingsselector.h b/src/libs/utils/settingsselector.h
index 06ca19b924..6df875a6e4 100644
--- a/src/libs/utils/settingsselector.h
+++ b/src/libs/utils/settingsselector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSSELECTORWIDGET_H
-#define SETTINGSSELECTORWIDGET_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // SETTINGSSELECTORWIDGET_H
diff --git a/src/libs/utils/settingsutils.h b/src/libs/utils/settingsutils.h
index 965293dee8..c693dc7442 100644
--- a/src/libs/utils/settingsutils.h
+++ b/src/libs/utils/settingsutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSUTILS_H
-#define SETTINGSUTILS_H
+#pragma once
 
 #include <QSettings>
 #include <QString>
@@ -70,5 +69,3 @@ void toSettings(const QString &postFix,
 }
 
 } // Utils
-
-#endif // SETTINGSUTILS_H
diff --git a/src/libs/utils/shellcommand.h b/src/libs/utils/shellcommand.h
index d139842d0f..f6024fb4b3 100644
--- a/src/libs/utils/shellcommand.h
+++ b/src/libs/utils/shellcommand.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_SHELLCOMMAND_H
-#define UTILS_SHELLCOMMAND_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -179,5 +178,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_SHELLCOMMAND_H
diff --git a/src/libs/utils/shellcommandpage.h b/src/libs/utils/shellcommandpage.h
index f716ab913b..63cb3aed78 100644
--- a/src/libs/utils/shellcommandpage.h
+++ b/src/libs/utils/shellcommandpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SHELLCOMMANDPAGE_H
-#define SHELLCOMMANDPAGE_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -77,5 +76,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // SHELLCOMMANDPAGE_H
diff --git a/src/libs/utils/sleep.h b/src/libs/utils/sleep.h
index 4f2c43f6e1..c7df10f8f7 100644
--- a/src/libs/utils/sleep.h
+++ b/src/libs/utils/sleep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SLEEP_H
-#define SLEEP_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -33,5 +32,3 @@ namespace Utils {
 void QTCREATOR_UTILS_EXPORT sleep(int msec);
 
 }
-
-#endif // SLEEP_H
diff --git a/src/libs/utils/smallstringliteral.h b/src/libs/utils/smallstringliteral.h
index 5b5a03a265..0f631d03e6 100644
--- a/src/libs/utils/smallstringliteral.h
+++ b/src/libs/utils/smallstringliteral.h
@@ -134,4 +134,3 @@ private:
 
 #pragma pop_macro("noexcept")
 #pragma pop_macro("constexpr")
-
diff --git a/src/libs/utils/statuslabel.h b/src/libs/utils/statuslabel.h
index 53395adee0..8531a66d1b 100644
--- a/src/libs/utils/statuslabel.h
+++ b/src/libs/utils/statuslabel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_STATUSLABEL_H
-#define UTILS_STATUSLABEL_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_STATUSLABEL_H
diff --git a/src/libs/utils/stringutils.h b/src/libs/utils/stringutils.h
index 94e1e28d50..8e0c78f028 100644
--- a/src/libs/utils/stringutils.h
+++ b/src/libs/utils/stringutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STRINGUTILS_H
-#define STRINGUTILS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -75,5 +74,3 @@ QTCREATOR_UTILS_EXPORT void expandMacros(QString *str, AbstractMacroExpander *mx
 QTCREATOR_UTILS_EXPORT QString expandMacros(const QString &str, AbstractMacroExpander *mx);
 
 } // namespace Utils
-
-#endif // STRINGUTILS_H
diff --git a/src/libs/utils/styledbar.h b/src/libs/utils/styledbar.h
index 39c3e02761..4b76c13e30 100644
--- a/src/libs/utils/styledbar.h
+++ b/src/libs/utils/styledbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STYLEDBAR_H
-#define STYLEDBAR_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -57,5 +56,3 @@ protected:
 };
 
 } // Utils
-
-#endif // STYLEDBAR_H
diff --git a/src/libs/utils/stylehelper.h b/src/libs/utils/stylehelper.h
index 7e483c43f1..e6a1da0302 100644
--- a/src/libs/utils/stylehelper.h
+++ b/src/libs/utils/stylehelper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STYLEHELPER_H
-#define STYLEHELPER_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -100,4 +99,3 @@ private:
 };
 
 } // namespace Utils
-#endif // STYLEHELPER_H
diff --git a/src/libs/utils/synchronousprocess.h b/src/libs/utils/synchronousprocess.h
index cb19aeea3d..c8891122cf 100644
--- a/src/libs/utils/synchronousprocess.h
+++ b/src/libs/utils/synchronousprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYNCHRONOUSPROCESS_H
-#define SYNCHRONOUSPROCESS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -171,5 +170,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif
diff --git a/src/libs/utils/tcpportsgatherer.h b/src/libs/utils/tcpportsgatherer.h
index 712cc5a885..dc56f75281 100644
--- a/src/libs/utils/tcpportsgatherer.h
+++ b/src/libs/utils/tcpportsgatherer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TCPPORTSGATHERER_H
-#define TCPPORTSGATHERER_H
+#pragma once
 
 #include "portlist.h"
 
@@ -49,5 +48,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // TCPPORTSGATHERER_H
diff --git a/src/libs/utils/templateengine.h b/src/libs/utils/templateengine.h
index c3e3d354e8..5073992347 100644
--- a/src/libs/utils/templateengine.h
+++ b/src/libs/utils/templateengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEMPLATEENGINE_H
-#define TEMPLATEENGINE_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -48,5 +47,3 @@ public:
 };
 
 } // namespace Utils
-
-#endif // TEMPLATEENGINE_H
diff --git a/src/libs/utils/textfieldcheckbox.h b/src/libs/utils/textfieldcheckbox.h
index 3d37c0bc8c..456e156370 100644
--- a/src/libs/utils/textfieldcheckbox.h
+++ b/src/libs/utils/textfieldcheckbox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTFIELDCHECKBOX_H
-#define TEXTFIELDCHECKBOX_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // TEXTFIELDCHECKBOX_H
diff --git a/src/libs/utils/textfieldcombobox.h b/src/libs/utils/textfieldcombobox.h
index a3fca807e1..943e7a677c 100644
--- a/src/libs/utils/textfieldcombobox.h
+++ b/src/libs/utils/textfieldcombobox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTFIELDCOMBOBOX_H
-#define TEXTFIELDCOMBOBOX_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // TEXTFIELDCOMBOBOX_H
diff --git a/src/libs/utils/textfileformat.h b/src/libs/utils/textfileformat.h
index 07398fb09d..6cb6c7ede8 100644
--- a/src/libs/utils/textfileformat.h
+++ b/src/libs/utils/textfileformat.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTFILEFORMAT_H
-#define TEXTFILEFORMAT_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -85,5 +84,3 @@ public:
 };
 
 } // namespace Utils
-
-#endif // TEXTFILEFORMAT_H
diff --git a/src/libs/utils/theme/theme.h b/src/libs/utils/theme/theme.h
index 884b76104f..e9727bb999 100644
--- a/src/libs/utils/theme/theme.h
+++ b/src/libs/utils/theme/theme.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THEME_H
-#define THEME_H
+#pragma once
 
 #include "../utils_global.h"
 
@@ -293,5 +292,3 @@ private:
 QTCREATOR_UTILS_EXPORT Theme *creatorTheme();
 
 } // namespace Utils
-
-#endif // THEME_H
diff --git a/src/libs/utils/theme/theme_p.h b/src/libs/utils/theme/theme_p.h
index 7382905a6a..8dafe9db57 100644
--- a/src/libs/utils/theme/theme_p.h
+++ b/src/libs/utils/theme/theme_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THEME_P_H
-#define THEME_P_H
+#pragma once
 
 #include "theme.h"
 #include "../utils_global.h"
@@ -55,5 +54,3 @@ public:
 QTCREATOR_UTILS_EXPORT void setCreatorTheme(Theme *theme);
 
 } // namespace Utils
-
-#endif // THEME_P_H
diff --git a/src/libs/utils/tooltip/effects.h b/src/libs/utils/tooltip/effects.h
index 02afec45a8..9e6b571e89 100644
--- a/src/libs/utils/tooltip/effects.h
+++ b/src/libs/utils/tooltip/effects.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EFFECTS_H
-#define EFFECTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -50,5 +49,3 @@ extern void Q_GUI_EXPORT qScrollEffect(QWidget*, QEffects::DirFlags dir = QEffec
 extern void Q_GUI_EXPORT qFadeEffect(QWidget*, int time = -1);
 
 QT_END_NAMESPACE
-
-#endif // EFFECTS_H
diff --git a/src/libs/utils/tooltip/reuse.h b/src/libs/utils/tooltip/reuse.h
index 8f8519b37a..ee2fca72de 100644
--- a/src/libs/utils/tooltip/reuse.h
+++ b/src/libs/utils/tooltip/reuse.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TOOLTIPREUSE_H
-#define TOOLTIPREUSE_H
+#pragma once
 
 #include <utils/hostosinfo.h>
 
@@ -54,5 +53,3 @@ inline QRect screenGeometry(const QPoint &pos, QWidget *w)
 
 } // namespace Internal
 } // namespace Utils
-
-#endif // TOOLTIPREUSE_H
diff --git a/src/libs/utils/tooltip/tips.h b/src/libs/utils/tooltip/tips.h
index f0389e404c..e2d467f6db 100644
--- a/src/libs/utils/tooltip/tips.h
+++ b/src/libs/utils/tooltip/tips.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TIPS_H
-#define TIPS_H
+#pragma once
 
 #include "../utils_global.h"
 
@@ -117,5 +116,3 @@ private:
 } // namespace Internal
 } // namespace Utils
 #endif
-
-#endif // TIPS_H
diff --git a/src/libs/utils/tooltip/tooltip.h b/src/libs/utils/tooltip/tooltip.h
index d6ad642ece..2d6d197528 100644
--- a/src/libs/utils/tooltip/tooltip.h
+++ b/src/libs/utils/tooltip/tooltip.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TOOLTIP_H
-#define TOOLTIP_H
+#pragma once
 
 #include "../utils_global.h"
 
@@ -116,5 +115,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // TOOLTIP_H
diff --git a/src/libs/utils/treemodel.h b/src/libs/utils/treemodel.h
index 62a17ecda7..0fcabcf85c 100644
--- a/src/libs/utils/treemodel.h
+++ b/src/libs/utils/treemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_TREEMODEL_H
-#define UTILS_TREEMODEL_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -300,5 +299,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // UTILS_TREEMODEL_H
diff --git a/src/libs/utils/treeviewcombobox.h b/src/libs/utils/treeviewcombobox.h
index b904a641e3..e32d64d4ae 100644
--- a/src/libs/utils/treeviewcombobox.h
+++ b/src/libs/utils/treeviewcombobox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TREEVIEWCOMBOBOX_H
-#define TREEVIEWCOMBOBOX_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -65,5 +64,3 @@ private:
     bool m_skipNextHide;
 };
 }
-
-#endif // TREEVIEWCOMBOBOX_H
diff --git a/src/libs/utils/uncommentselection.h b/src/libs/utils/uncommentselection.h
index bba6798c9a..46efe8da97 100644
--- a/src/libs/utils/uncommentselection.h
+++ b/src/libs/utils/uncommentselection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UNCOMMENTSELECTION_H
-#define UNCOMMENTSELECTION_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -60,5 +59,3 @@ void unCommentSelection(QPlainTextEdit *edit,
                         const CommentDefinition &definiton = CommentDefinition());
 
 } // namespace Utils
-
-#endif // UNCOMMENTSELECTION_H
diff --git a/src/libs/utils/unixutils.h b/src/libs/utils/unixutils.h
index 5e6bbeecaf..b43cb09142 100644
--- a/src/libs/utils/unixutils.h
+++ b/src/libs/utils/unixutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UNIXUTILS_H
-#define UNIXUTILS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -46,5 +45,3 @@ public:
 };
 
 }
-
-#endif // UNIXUTILS_H
diff --git a/src/libs/utils/utils_global.h b/src/libs/utils/utils_global.h
index 2313d16b2c..76ed9c6445 100644
--- a/src/libs/utils/utils_global.h
+++ b/src/libs/utils/utils_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_GLOBAL_H
-#define UTILS_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -35,5 +34,3 @@
 #else
 #  define QTCREATOR_UTILS_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // UTILS_GLOBAL_H
diff --git a/src/libs/utils/utilsicons.h b/src/libs/utils/utilsicons.h
index 51da2999c4..bf481e9b4f 100644
--- a/src/libs/utils/utilsicons.h
+++ b/src/libs/utils/utilsicons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILSICONS_H
-#define UTILSICONS_H
+#pragma once
 
 #include "icon.h"
 
@@ -36,5 +35,3 @@ const Utils::Icon EDIT_CLEAR({
 
 } // namespace Icons
 } // namespace Utils
-
-#endif // UTILSICONS_H
diff --git a/src/libs/utils/winutils.h b/src/libs/utils/winutils.h
index 28a1b5c113..6bb75f97d6 100644
--- a/src/libs/utils/winutils.h
+++ b/src/libs/utils/winutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINUTILS_H
-#define WINUTILS_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // WINUTILS_H
diff --git a/src/libs/utils/wizard.h b/src/libs/utils/wizard.h
index 587ac48356..070b6ff4a2 100644
--- a/src/libs/utils/wizard.h
+++ b/src/libs/utils/wizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WIZARD_H
-#define WIZARD_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -170,5 +169,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // WIZARD_H
diff --git a/src/libs/utils/wizardpage.h b/src/libs/utils/wizardpage.h
index 2570da5d75..c9f9a462ec 100644
--- a/src/libs/utils/wizardpage.h
+++ b/src/libs/utils/wizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WIZARDPAGE_H
-#define WIZARDPAGE_H
+#pragma once
 
 #include "utils_global.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace Utils
-
-#endif // WIZARDPAGE_H
diff --git a/src/plugins/android/android_global.h b/src/plugins/android/android_global.h
index 3be55983cd..1f79d86ebc 100644
--- a/src/plugins/android/android_global.h
+++ b/src/plugins/android/android_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROID_GLOBAL_H
-#define ANDROID_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define ANDROID_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // ANDROID_GLOBAL_H
diff --git a/src/plugins/android/androidanalyzesupport.h b/src/plugins/android/androidanalyzesupport.h
index e272688a27..54460cdb1d 100644
--- a/src/plugins/android/androidanalyzesupport.h
+++ b/src/plugins/android/androidanalyzesupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDANALYZESUPPORT_H
-#define ANDROIDANALYZESUPPORT_H
+#pragma once
 
 #include "androidrunconfiguration.h"
 #include <qmldebug/qmloutputparser.h>
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDANALYZESUPPORT_H
diff --git a/src/plugins/android/androidbuildapkstep.h b/src/plugins/android/androidbuildapkstep.h
index 42d446bd7c..302a5c714d 100644
--- a/src/plugins/android/androidbuildapkstep.h
+++ b/src/plugins/android/androidbuildapkstep.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDBUILDAPKSTEP_H
-#define ANDROIDBUILDAPKSTEP_H
+#pragma once
 
 #include "android_global.h"
 #include <projectexplorer/abstractprocessstep.h>
@@ -114,5 +113,3 @@ protected:
 };
 
 } // namespace Android
-
-#endif // ANDROIDBUILDAPKSTEP_H
diff --git a/src/plugins/android/androidbuildapkwidget.h b/src/plugins/android/androidbuildapkwidget.h
index 52d765275e..42e3dc3c79 100644
--- a/src/plugins/android/androidbuildapkwidget.h
+++ b/src/plugins/android/androidbuildapkwidget.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDBUILDAPKWIDGET_H
-#define ANDROIDBUILDAPKWIDGET_H
+#pragma once
 
 #include "android_global.h"
 
@@ -76,5 +75,3 @@ private:
 };
 
 }
-
-#endif // ANDROIDBUILDAPKWIDGET_H
diff --git a/src/plugins/android/androidconfigurations.h b/src/plugins/android/androidconfigurations.h
index 740dafc9bd..85a1e15f8d 100644
--- a/src/plugins/android/androidconfigurations.h
+++ b/src/plugins/android/androidconfigurations.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDCONFIGURATIONS_H
-#define ANDROIDCONFIGURATIONS_H
+#pragma once
 
 #include "android_global.h"
 
@@ -248,5 +247,3 @@ private:
 };
 
 } // namespace Android
-
-#endif // ANDROIDCONFIGURATIONS_H
diff --git a/src/plugins/android/androidconstants.h b/src/plugins/android/androidconstants.h
index e9002b5e88..d51c40b13f 100644
--- a/src/plugins/android/androidconstants.h
+++ b/src/plugins/android/androidconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDCONSTANTS_H
-#define ANDROIDCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -71,5 +70,3 @@ const char ANDROID_EXTRA_LIBS[] = "AndroidExtraLibs";
 
 } // namespace Constants;
 } // namespace Android
-
-#endif  // ANDROIDCONSTANTS_H
diff --git a/src/plugins/android/androidcreatekeystorecertificate.h b/src/plugins/android/androidcreatekeystorecertificate.h
index eba9b73ea9..22030d2c24 100644
--- a/src/plugins/android/androidcreatekeystorecertificate.h
+++ b/src/plugins/android/androidcreatekeystorecertificate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDCREATEKEYSTORECERTIFICATE_H
-#define ANDROIDCREATEKEYSTORECERTIFICATE_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDCREATEKEYSTORECERTIFICATE_H
diff --git a/src/plugins/android/androiddebugsupport.h b/src/plugins/android/androiddebugsupport.h
index cf46aa8069..368b66c11c 100644
--- a/src/plugins/android/androiddebugsupport.h
+++ b/src/plugins/android/androiddebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEBUGSUPPORT_H
-#define ANDROIDDEBUGSUPPORT_H
+#pragma once
 
 #include "androidrunconfiguration.h"
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDDEBUGSUPPORT_H
diff --git a/src/plugins/android/androiddeployconfiguration.h b/src/plugins/android/androiddeployconfiguration.h
index d1cd85b054..8ce9191e6d 100644
--- a/src/plugins/android/androiddeployconfiguration.h
+++ b/src/plugins/android/androiddeployconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEPLOYCONFIGURATION_H
-#define ANDROIDDEPLOYCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/deployconfiguration.h>
 
@@ -65,5 +64,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDDEPLOYCONFIGURATION_H
diff --git a/src/plugins/android/androiddeployqtstep.h b/src/plugins/android/androiddeployqtstep.h
index acd0b9aa96..470b8a4115 100644
--- a/src/plugins/android/androiddeployqtstep.h
+++ b/src/plugins/android/androiddeployqtstep.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEPLOYQTSTEP_H
-#define ANDROIDDEPLOYQTSTEP_H
+#pragma once
 
 #include "androidbuildapkstep.h"
 #include "androidconfigurations.h"
@@ -143,5 +142,3 @@ private:
 
 }
 } // namespace Android
-
-#endif // ANDROIDDEPLOYQTSTEP_H
diff --git a/src/plugins/android/androiddeployqtwidget.h b/src/plugins/android/androiddeployqtwidget.h
index b8cc586e0b..81ae354676 100644
--- a/src/plugins/android/androiddeployqtwidget.h
+++ b/src/plugins/android/androiddeployqtwidget.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEPLOYQTWIDGET_H
-#define ANDROIDDEPLOYQTWIDGET_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -62,4 +61,3 @@ private:
 
 }
 }
-#endif // ANDROIDDEPLOYQTWIDGET_H
diff --git a/src/plugins/android/androiddevice.h b/src/plugins/android/androiddevice.h
index 5ed6fb5804..364628d8b2 100644
--- a/src/plugins/android/androiddevice.h
+++ b/src/plugins/android/androiddevice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEVICE_H
-#define ANDROIDDEVICE_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 
@@ -58,5 +57,3 @@ protected:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDDEVICE_H
diff --git a/src/plugins/android/androiddevicedialog.h b/src/plugins/android/androiddevicedialog.h
index fa17aa5d56..39b9abcc7d 100644
--- a/src/plugins/android/androiddevicedialog.h
+++ b/src/plugins/android/androiddevicedialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEVICEDIALOG_H
-#define ANDROIDDEVICEDIALOG_H
+#pragma once
 
 #include "androidconfigurations.h"
 
@@ -83,5 +82,3 @@ private:
 
 }
 }
-
-#endif // ANDROIDDEVICEDIALOG_H
diff --git a/src/plugins/android/androiddevicefactory.h b/src/plugins/android/androiddevicefactory.h
index d57109615e..8d6dc109b8 100644
--- a/src/plugins/android/androiddevicefactory.h
+++ b/src/plugins/android/androiddevicefactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDDEVICEFACTORY_H
-#define ANDROIDDEVICEFACTORY_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicefactory.h>
 
@@ -48,5 +47,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDDEVICEFACTORY_H
diff --git a/src/plugins/android/androiderrormessage.h b/src/plugins/android/androiderrormessage.h
index 133cc562bf..add3807b88 100644
--- a/src/plugins/android/androiderrormessage.h
+++ b/src/plugins/android/androiderrormessage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDERRORMESSAGE_H
-#define ANDROIDERRORMESSAGE_H
+#pragma once
 
 #include <QVariantList>
 #include <QCoreApplication>
@@ -53,5 +52,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDERRORMESSAGE_H
diff --git a/src/plugins/android/androidgdbserverkitinformation.h b/src/plugins/android/androidgdbserverkitinformation.h
index 5a0122e8de..1aaadd4e3b 100644
--- a/src/plugins/android/androidgdbserverkitinformation.h
+++ b/src/plugins/android/androidgdbserverkitinformation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDGDBSERVERKITINFORMATION_H
-#define ANDROIDGDBSERVERKITINFORMATION_H
+#pragma once
 
 #include <projectexplorer/kitinformation.h>
 #include <projectexplorer/kitconfigwidget.h>
@@ -85,5 +84,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDGDBSERVERKITINFORMATION_H
diff --git a/src/plugins/android/androidglobal.h b/src/plugins/android/androidglobal.h
index c2de68148a..66c942c8f9 100644
--- a/src/plugins/android/androidglobal.h
+++ b/src/plugins/android/androidglobal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDGLOBAL_H
-#define ANDROIDGLOBAL_H
+#pragma once
 
 #include <utils/environment.h>
 
@@ -74,5 +73,3 @@ public:
 };
 
 } // namespace Android
-
-#endif // ANDROIDGLOBAL_H
diff --git a/src/plugins/android/androidmanager.h b/src/plugins/android/androidmanager.h
index d2f03531c8..344a4330de 100644
--- a/src/plugins/android/androidmanager.h
+++ b/src/plugins/android/androidmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDMANAGER_H
-#define ANDROIDMANAGER_H
+#pragma once
 
 #include "android_global.h"
 
@@ -90,5 +89,3 @@ public:
 };
 
 } // namespace Android
-
-#endif // ANDROIDMANAGER_H
diff --git a/src/plugins/android/androidmanifestdocument.h b/src/plugins/android/androidmanifestdocument.h
index aad62b8f9a..169047f051 100644
--- a/src/plugins/android/androidmanifestdocument.h
+++ b/src/plugins/android/androidmanifestdocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDMANIFESTDOCUMENT_H
-#define ANDROIDMANIFESTDOCUMENT_H
+#pragma once
 
 #include <texteditor/textdocument.h>
 
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDMANIFESTDOCUMENT_H
diff --git a/src/plugins/android/androidmanifesteditor.h b/src/plugins/android/androidmanifesteditor.h
index a2c2956e32..32ed8476f0 100644
--- a/src/plugins/android/androidmanifesteditor.h
+++ b/src/plugins/android/androidmanifesteditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDMANIFESTEDITOR_H
-#define ANDROIDMANIFESTEDITOR_H
+#pragma once
 
 #include "androidmanifestdocument.h"
 #include "androidmanifesteditorwidget.h"
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDMANIFESTEDITOR_H
diff --git a/src/plugins/android/androidmanifesteditorfactory.h b/src/plugins/android/androidmanifesteditorfactory.h
index 6ab7289877..a25e02cef5 100644
--- a/src/plugins/android/androidmanifesteditorfactory.h
+++ b/src/plugins/android/androidmanifesteditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDMANIFESTEDITORFACTORY_H
-#define ANDROIDMANIFESTEDITORFACTORY_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditorfactory.h>
 
@@ -43,5 +42,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDMANIFESTEDITORFACTORY_H
diff --git a/src/plugins/android/androidmanifesteditorwidget.h b/src/plugins/android/androidmanifesteditorwidget.h
index 7581ca0939..8a0afa166f 100644
--- a/src/plugins/android/androidmanifesteditorwidget.h
+++ b/src/plugins/android/androidmanifesteditorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDMANIFESTEDITORWIDGET_H
-#define ANDROIDMANIFESTEDITORWIDGET_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -191,6 +190,3 @@ private:
 };
 } // namespace Internal
 } // namespace Android
-
-
-#endif // ANDROIDMANIFESTEDITORWIDGET_H
diff --git a/src/plugins/android/androidplugin.h b/src/plugins/android/androidplugin.h
index afde90ccc9..6f2bbd7544 100644
--- a/src/plugins/android/androidplugin.h
+++ b/src/plugins/android/androidplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDPLUGIN_H
-#define ANDROIDPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -47,5 +46,3 @@ private slots:
 };
 
 } // namespace Android
-
-#endif // ANDROIDPLUGIN_H
diff --git a/src/plugins/android/androidpotentialkit.h b/src/plugins/android/androidpotentialkit.h
index dbffe2c782..fe10550f4d 100644
--- a/src/plugins/android/androidpotentialkit.h
+++ b/src/plugins/android/androidpotentialkit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDPOTENTIALKIT_H
-#define ANDROIDPOTENTIALKIT_H
+#pragma once
 
 #include <projectexplorer/ipotentialkit.h>
 #include <utils/detailswidget.h>
@@ -56,5 +55,3 @@ private slots:
 
 }
 }
-
-#endif // ANDROIDPOTENTIALKIT_H
diff --git a/src/plugins/android/androidqtsupport.h b/src/plugins/android/androidqtsupport.h
index b4c1e9d7d7..021e5d7cff 100644
--- a/src/plugins/android/androidqtsupport.h
+++ b/src/plugins/android/androidqtsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDSUPPORT_H
-#define ANDROIDSUPPORT_H
+#pragma once
 
 #include "android_global.h"
 
@@ -66,6 +65,3 @@ public:
 };
 
 } // namespace Android
-
-
-#endif // ANDROIDSUPPORT_H
diff --git a/src/plugins/android/androidqtversion.h b/src/plugins/android/androidqtversion.h
index 05df491ed2..865c31e65c 100644
--- a/src/plugins/android/androidqtversion.h
+++ b/src/plugins/android/androidqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDQTVERSION_H
-#define ANDROIDQTVERSION_H
+#pragma once
 
 #include <qtsupport/baseqtversion.h>
 
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDQTVERSION_H
diff --git a/src/plugins/android/androidqtversionfactory.h b/src/plugins/android/androidqtversionfactory.h
index e75fa9b580..8f551b9b86 100644
--- a/src/plugins/android/androidqtversionfactory.h
+++ b/src/plugins/android/androidqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDQTVERSIONFACTORY_H
-#define ANDROIDQTVERSIONFACTORY_H
+#pragma once
 
 #include <qtsupport/qtversionfactory.h>
 
@@ -46,5 +45,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDQTVERSIONFACTORY_H
diff --git a/src/plugins/android/androidrunconfiguration.h b/src/plugins/android/androidrunconfiguration.h
index ca895e2c0b..cfa54312d9 100644
--- a/src/plugins/android/androidrunconfiguration.h
+++ b/src/plugins/android/androidrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDRUNCONFIGURATION_H
-#define ANDROIDRUNCONFIGURATION_H
+#pragma once
 
 #include "android_global.h"
 
@@ -47,5 +46,3 @@ protected:
 };
 
 } // namespace Android
-
-#endif // ANDROIDRUNCONFIGURATION_H
diff --git a/src/plugins/android/androidruncontrol.h b/src/plugins/android/androidruncontrol.h
index 2ee21c3bcb..343164de49 100644
--- a/src/plugins/android/androidruncontrol.h
+++ b/src/plugins/android/androidruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDRUNCONTROL_H
-#define ANDROIDRUNCONTROL_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDRUNCONTROL_H
diff --git a/src/plugins/android/androidrunfactories.h b/src/plugins/android/androidrunfactories.h
index 58362cf8c8..5556b44f48 100644
--- a/src/plugins/android/androidrunfactories.h
+++ b/src/plugins/android/androidrunfactories.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDRUNFACTORIES_H
-#define ANDROIDRUNFACTORIES_H
+#pragma once
 
 #include "android_global.h"
 #include <projectexplorer/runconfiguration.h>
@@ -55,5 +54,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif  // ANDROIDRUNFACTORIES_H
diff --git a/src/plugins/android/androidrunnable.h b/src/plugins/android/androidrunnable.h
index 453807c359..5f09a50355 100644
--- a/src/plugins/android/androidrunnable.h
+++ b/src/plugins/android/androidrunnable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDRUNNABLE_H
-#define ANDROIDRUNNABLE_H
+#pragma once
 
 #include "android_global.h"
 #include <projectexplorer/runnables.h>
@@ -54,5 +53,3 @@ inline bool operator==(const AndroidRunnable &r1, const AndroidRunnable &r2)
 }
 
 } // namespace Android
-
-#endif // ANDROIDRUNNABLE_H
diff --git a/src/plugins/android/androidrunner.h b/src/plugins/android/androidrunner.h
index 32f7418ad9..d32018c869 100644
--- a/src/plugins/android/androidrunner.h
+++ b/src/plugins/android/androidrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDRUNNER_H
-#define ANDROIDRUNNER_H
+#pragma once
 
 #include "androidconfigurations.h"
 #include "androidrunnable.h"
@@ -120,5 +119,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDRUNNER_H
diff --git a/src/plugins/android/androidsettingspage.h b/src/plugins/android/androidsettingspage.h
index 2f45863c71..1330721dbf 100644
--- a/src/plugins/android/androidsettingspage.h
+++ b/src/plugins/android/androidsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDSETTINGSPAGE_H
-#define ANDROIDSETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDSETTINGSPAGE_H
diff --git a/src/plugins/android/androidsettingswidget.h b/src/plugins/android/androidsettingswidget.h
index 4e68c596ff..f39c7eaf52 100644
--- a/src/plugins/android/androidsettingswidget.h
+++ b/src/plugins/android/androidsettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDSETTINGSWIDGET_H
-#define ANDROIDSETTINGSWIDGET_H
+#pragma once
 
 #include "androidconfigurations.h"
 
@@ -124,5 +123,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDSETTINGSWIDGET_H
diff --git a/src/plugins/android/androidsignaloperation.h b/src/plugins/android/androidsignaloperation.h
index ae35d6cc6e..f31972e3fa 100644
--- a/src/plugins/android/androidsignaloperation.h
+++ b/src/plugins/android/androidsignaloperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDSIGNALOPERATION_H
-#define ANDROIDSIGNALOPERATION_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 
@@ -74,5 +73,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDSIGNALOPERATION_H
diff --git a/src/plugins/android/androidtoolchain.h b/src/plugins/android/androidtoolchain.h
index c1ecc9fde2..0f15f2db61 100644
--- a/src/plugins/android/androidtoolchain.h
+++ b/src/plugins/android/androidtoolchain.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDTOOLCHAIN_H
-#define ANDROIDTOOLCHAIN_H
+#pragma once
 
 #include <projectexplorer/gcctoolchain.h>
 #include <projectexplorer/toolchainconfigwidget.h>
@@ -124,5 +123,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // ANDROIDTOOLCHAIN_H
diff --git a/src/plugins/android/avddialog.h b/src/plugins/android/avddialog.h
index d4e6c355ac..6d98aa0124 100644
--- a/src/plugins/android/avddialog.h
+++ b/src/plugins/android/avddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AVDDIALOG_H
-#define AVDDIALOG_H
+#pragma once
 
 #include "ui_addnewavddialog.h"
 
@@ -62,5 +61,3 @@ private:
 };
 }
 }
-
-#endif // AVDDIALOG_H
diff --git a/src/plugins/android/certificatesmodel.h b/src/plugins/android/certificatesmodel.h
index e77bc06c8d..57c0a6ab43 100644
--- a/src/plugins/android/certificatesmodel.h
+++ b/src/plugins/android/certificatesmodel.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef CERTIFICATESMODEL_H
-#define CERTIFICATESMODEL_H
+#pragma once
 
 #include <QAbstractListModel>
 #include <QVector>
@@ -50,5 +49,3 @@ private:
 
 }
 }
-
-#endif // CERTIFICATESMODEL_H
diff --git a/src/plugins/android/javaautocompleter.h b/src/plugins/android/javaautocompleter.h
index 6372d15695..ed088c033d 100644
--- a/src/plugins/android/javaautocompleter.h
+++ b/src/plugins/android/javaautocompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JAVAAUTOCOMPLETER_H
-#define JAVAAUTOCOMPLETER_H
+#pragma once
 
 #include <texteditor/autocompleter.h>
 
@@ -42,6 +41,3 @@ public:
 };
 }
 }
-
-
-#endif // JAVAAUTOCOMPLETER_H
diff --git a/src/plugins/android/javacompletionassistprovider.h b/src/plugins/android/javacompletionassistprovider.h
index 5e90bcf2fe..f58685250f 100644
--- a/src/plugins/android/javacompletionassistprovider.h
+++ b/src/plugins/android/javacompletionassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JAVACOMPLETIONASSISTPROVIDER_H
-#define JAVACOMPLETIONASSISTPROVIDER_H
+#pragma once
 
 #include <texteditor/codeassist/completionassistprovider.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // JAVACOMPLETIONASSISTPROVIDER_H
diff --git a/src/plugins/android/javaeditor.h b/src/plugins/android/javaeditor.h
index 6f176b784c..c442484daf 100644
--- a/src/plugins/android/javaeditor.h
+++ b/src/plugins/android/javaeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JAVAEDITOR_H
-#define JAVAEDITOR_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // JAVAEDITOR_H
diff --git a/src/plugins/android/javaindenter.h b/src/plugins/android/javaindenter.h
index 9be0b47a95..2b40851fd4 100644
--- a/src/plugins/android/javaindenter.h
+++ b/src/plugins/android/javaindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JAVAINDENTER_H
-#define JAVAINDENTER_H
+#pragma once
 
 #include <texteditor/indenter.h>
 
@@ -47,5 +46,3 @@ public:
 };
 } // namespace Internal
 } // namespace Android
-
-#endif // JAVAINDENTER_H
diff --git a/src/plugins/android/javaparser.h b/src/plugins/android/javaparser.h
index 6a5d237985..642db44e23 100644
--- a/src/plugins/android/javaparser.h
+++ b/src/plugins/android/javaparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JAVAPARSER_H
-#define JAVAPARSER_H
+#pragma once
 
 #include <projectexplorer/ioutputparser.h>
 #include <utils/fileutils.h>
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace Android
-
-#endif // JAVAPARSER_H
diff --git a/src/plugins/autotest/autotest_global.h b/src/plugins/autotest/autotest_global.h
index 03822d4131..c485ad2185 100644
--- a/src/plugins/autotest/autotest_global.h
+++ b/src/plugins/autotest/autotest_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOTEST_GLOBAL_H
-#define AUTOTEST_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define AUTOTESTSHARED_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // AUTOTEST_GLOBAL_H
-
diff --git a/src/plugins/autotest/autotest_utils.h b/src/plugins/autotest/autotest_utils.h
index c9447d3bbd..db3decf6c0 100644
--- a/src/plugins/autotest/autotest_utils.h
+++ b/src/plugins/autotest/autotest_utils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOTEST_UTILS_H
-#define AUTOTEST_UTILS_H
+#pragma once
 
 #include <QStringList>
 
@@ -68,5 +67,3 @@ public:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // AUTOTEST_UTILS_H
diff --git a/src/plugins/autotest/autotestconstants.h b/src/plugins/autotest/autotestconstants.h
index 5e9f3c56c4..9b1f1a2adb 100644
--- a/src/plugins/autotest/autotestconstants.h
+++ b/src/plugins/autotest/autotestconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOTESTCONSTANTS_H
-#define AUTOTESTCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -54,6 +53,3 @@ enum TestType
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // AUTOTESTCONSTANTS_H
-
diff --git a/src/plugins/autotest/autotesticons.h b/src/plugins/autotest/autotesticons.h
index 88c929dc97..35a9614a5f 100644
--- a/src/plugins/autotest/autotesticons.h
+++ b/src/plugins/autotest/autotesticons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOTESTICONS_H
-#define AUTOTESTICONS_H
+#pragma once
 
 #include <utils/icon.h>
 
@@ -45,5 +44,3 @@ const Utils::Icon RUN_SELECTED_OVERLAY({
 
 } // namespace Icons
 } // namespace Autotest
-
-#endif // AUTOTESTICONS_H
diff --git a/src/plugins/autotest/autotestplugin.h b/src/plugins/autotest/autotestplugin.h
index 18ffbaf4ed..5cef24fd10 100644
--- a/src/plugins/autotest/autotestplugin.h
+++ b/src/plugins/autotest/autotestplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOTESTPLUGIN_H
-#define AUTOTESTPLUGIN_H
+#pragma once
 
 #include "autotest_global.h"
 
@@ -64,6 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // AUTOTESTPLUGIN_H
-
diff --git a/src/plugins/autotest/autotestunittests.h b/src/plugins/autotest/autotestunittests.h
index 6eab3749d4..e57d265a40 100644
--- a/src/plugins/autotest/autotestunittests.h
+++ b/src/plugins/autotest/autotestunittests.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOTESTUNITTESTS_H
-#define AUTOTESTUNITTESTS_H
+#pragma once
 
 #include <QObject>
 #include <QTemporaryDir>
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // AUTOTESTUNITTESTS_H
diff --git a/src/plugins/autotest/testcodeparser.h b/src/plugins/autotest/testcodeparser.h
index 2755d33dd6..1ae34ffa33 100644
--- a/src/plugins/autotest/testcodeparser.h
+++ b/src/plugins/autotest/testcodeparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTCODEPARSER_H
-#define TESTCODEPARSER_H
+#pragma once
 
 #include "testtreeitem.h"
 #include "testtreemodel.h"
@@ -107,5 +106,3 @@ private:
 
 } // namespace Internal
 } // Autotest
-
-#endif // TESTCODEPARSER_H
diff --git a/src/plugins/autotest/testconfiguration.h b/src/plugins/autotest/testconfiguration.h
index f3bcbbd161..ff00ad0d9f 100644
--- a/src/plugins/autotest/testconfiguration.h
+++ b/src/plugins/autotest/testconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTCONFIGURATION_H
-#define TESTCONFIGURATION_H
+#pragma once
 
 #include "autotestconstants.h"
 
@@ -98,5 +97,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTCONFIGURATION_H
diff --git a/src/plugins/autotest/testnavigationwidget.h b/src/plugins/autotest/testnavigationwidget.h
index 5f92909b93..02a709162c 100644
--- a/src/plugins/autotest/testnavigationwidget.h
+++ b/src/plugins/autotest/testnavigationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTNAVIGATIONWIDGETTREEVIEW_H
-#define TESTNAVIGATIONWIDGETTREEVIEW_H
+#pragma once
 
 #include <coreplugin/inavigationwidgetfactory.h>
 
@@ -102,5 +101,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTNAVIGATIONWIDGETTREEVIEW_H
diff --git a/src/plugins/autotest/testoutputreader.h b/src/plugins/autotest/testoutputreader.h
index 1c557d9dd7..4700af4c8a 100644
--- a/src/plugins/autotest/testoutputreader.h
+++ b/src/plugins/autotest/testoutputreader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTXMLOUTPUTREADER_H
-#define TESTXMLOUTPUTREADER_H
+#pragma once
 
 #include "testresult.h"
 
@@ -106,5 +105,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTOUTPUTREADER_H
diff --git a/src/plugins/autotest/testresult.h b/src/plugins/autotest/testresult.h
index 66073f0ca4..86439b4640 100644
--- a/src/plugins/autotest/testresult.h
+++ b/src/plugins/autotest/testresult.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTRESULT_H
-#define TESTRESULT_H
+#pragma once
 
 #include "autotestconstants.h"
 
@@ -132,5 +131,3 @@ bool operator==(const TestResult &t1, const TestResult &t2);
 
 Q_DECLARE_METATYPE(Autotest::Internal::TestResult)
 Q_DECLARE_METATYPE(Autotest::Internal::Result::Type)
-
-#endif // TESTRESULT_H
diff --git a/src/plugins/autotest/testresultdelegate.h b/src/plugins/autotest/testresultdelegate.h
index 521ac0505d..9e87df63b9 100644
--- a/src/plugins/autotest/testresultdelegate.h
+++ b/src/plugins/autotest/testresultdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTRESULTDELEGATE_H
-#define TESTRESULTDELEGATE_H
+#pragma once
 
 #include "testresultmodel.h"
 
@@ -127,5 +126,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTRESULTDELEGATE_H
diff --git a/src/plugins/autotest/testresultmodel.h b/src/plugins/autotest/testresultmodel.h
index 2fe124178b..9f32a71450 100644
--- a/src/plugins/autotest/testresultmodel.h
+++ b/src/plugins/autotest/testresultmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTRESULTMODEL_H
-#define TESTRESULTMODEL_H
+#pragma once
 
 #include "testresult.h"
 
@@ -101,5 +100,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTRESULTMODEL_H
diff --git a/src/plugins/autotest/testresultspane.h b/src/plugins/autotest/testresultspane.h
index 86b9bbd4a9..4955783f89 100644
--- a/src/plugins/autotest/testresultspane.h
+++ b/src/plugins/autotest/testresultspane.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTRESULTSPANE_H
-#define TESTRESULTSPANE_H
+#pragma once
 
 #include "testresult.h"
 
@@ -136,5 +135,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTRESULTSPANE_H
diff --git a/src/plugins/autotest/testrunner.h b/src/plugins/autotest/testrunner.h
index 63b8eaccbc..aca76ac5ce 100644
--- a/src/plugins/autotest/testrunner.h
+++ b/src/plugins/autotest/testrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTRUNNER_H
-#define TESTRUNNER_H
+#pragma once
 
 #include "testconfiguration.h"
 #include "testresult.h"
@@ -79,5 +78,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTRUNNER_H
diff --git a/src/plugins/autotest/testsettings.h b/src/plugins/autotest/testsettings.h
index 7a9aa1d97d..e34ab202fa 100644
--- a/src/plugins/autotest/testsettings.h
+++ b/src/plugins/autotest/testsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTSETTINGS_H
-#define TESTSETTINGS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -70,5 +69,3 @@ inline bool operator!=(const TestSettings &s1, const TestSettings &s2) { return
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTSETTINGS_H
diff --git a/src/plugins/autotest/testsettingspage.h b/src/plugins/autotest/testsettingspage.h
index c41929c667..5ae3b98b3a 100644
--- a/src/plugins/autotest/testsettingspage.h
+++ b/src/plugins/autotest/testsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTSETTINGSPAGE_H
-#define TESTSETTINGSPAGE_H
+#pragma once
 
 #include "ui_testsettingspage.h"
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTSETTINGSPAGE_H
diff --git a/src/plugins/autotest/testtreeitem.h b/src/plugins/autotest/testtreeitem.h
index 5f45a723ef..c38a7ae4fe 100644
--- a/src/plugins/autotest/testtreeitem.h
+++ b/src/plugins/autotest/testtreeitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTTREEITEM_H
-#define TESTTREEITEM_H
+#pragma once
 
 #include <utils/treemodel.h>
 
@@ -228,5 +227,3 @@ struct GTestCaseSpec
 
 Q_DECLARE_METATYPE(Autotest::Internal::TestTreeItem *)
 Q_DECLARE_METATYPE(Autotest::Internal::TestCodeLocationAndType)
-
-#endif // TESTTREEITEM_H
diff --git a/src/plugins/autotest/testtreeitemdelegate.h b/src/plugins/autotest/testtreeitemdelegate.h
index 0391ea28d3..7c6f0ef67e 100644
--- a/src/plugins/autotest/testtreeitemdelegate.h
+++ b/src/plugins/autotest/testtreeitemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTTREEITEMDELEGATE_H
-#define TESTTREEITEMDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -44,5 +43,3 @@ public:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTTREEITEMDELEGATE_H
diff --git a/src/plugins/autotest/testtreemodel.h b/src/plugins/autotest/testtreemodel.h
index dae8d34ba3..5770393779 100644
--- a/src/plugins/autotest/testtreemodel.h
+++ b/src/plugins/autotest/testtreemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTTREEMODEL_H
-#define TESTTREEMODEL_H
+#pragma once
 
 #include "testconfiguration.h"
 #include "testtreeitem.h"
@@ -170,5 +169,3 @@ struct TestParseResult
 
 Q_DECLARE_METATYPE(Autotest::Internal::TestTreeModel::Type)
 Q_DECLARE_METATYPE(Autotest::Internal::TestParseResult)
-
-#endif // TESTTREEMODEL_H
diff --git a/src/plugins/autotest/testtreeview.h b/src/plugins/autotest/testtreeview.h
index a75c2fdaa7..dffc3be835 100644
--- a/src/plugins/autotest/testtreeview.h
+++ b/src/plugins/autotest/testtreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTTREEVIEW_H
-#define TESTTREEVIEW_H
+#pragma once
 
 #include <utils/navigationtreeview.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTTREEVIEW_H
diff --git a/src/plugins/autotest/testvisitor.h b/src/plugins/autotest/testvisitor.h
index 5d171216f5..f79d612a4c 100644
--- a/src/plugins/autotest/testvisitor.h
+++ b/src/plugins/autotest/testvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTVISITOR_H
-#define TESTVISITOR_H
+#pragma once
 
 #include "testtreeitem.h"
 
@@ -164,5 +163,3 @@ private:
 
 } // namespace Internal
 } // namespace Autotest
-
-#endif // TESTVISITOR_H
diff --git a/src/plugins/autotest/unit_test/plain/test_plain/tst_simple.h b/src/plugins/autotest/unit_test/plain/test_plain/tst_simple.h
index 25523237cb..4c30299624 100644
--- a/src/plugins/autotest/unit_test/plain/test_plain/tst_simple.h
+++ b/src/plugins/autotest/unit_test/plain/test_plain/tst_simple.h
@@ -1,4 +1,2 @@
-#ifndef TST_SIMPLE_H
-#define TST_SIMPLE_H
+#pragma once
 #include <QTest>
-#endif // TST_SIMPLE_H
diff --git a/src/plugins/baremetal/baremetalconstants.h b/src/plugins/baremetal/baremetalconstants.h
index efca7cd688..7b1358cc33 100644
--- a/src/plugins/baremetal/baremetalconstants.h
+++ b/src/plugins/baremetal/baremetalconstants.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALCONSTANTS_H
-#define BAREMETALCONSTANTS_H
+#pragma once
 
 namespace BareMetal {
 namespace Constants {
@@ -48,5 +47,3 @@ const char STLINK_UTIL_PROVIDER_ID[] = "BareMetal.GdbServerProvider.STLinkUtil";
 
 } // namespace BareMetal
 } // namespace Constants
-
-#endif // BAREMETALCONSTANTS_H
diff --git a/src/plugins/baremetal/baremetalcustomrunconfiguration.h b/src/plugins/baremetal/baremetalcustomrunconfiguration.h
index a52c58eabb..9c9118033a 100644
--- a/src/plugins/baremetal/baremetalcustomrunconfiguration.h
+++ b/src/plugins/baremetal/baremetalcustomrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALCUSTOMRUNCONFIGURATION_H
-#define BAREMETALCUSTOMRUNCONFIGURATION_H
+#pragma once
 
 #include "baremetalrunconfiguration.h"
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // Include guard.
diff --git a/src/plugins/baremetal/baremetaldebugsupport.h b/src/plugins/baremetal/baremetaldebugsupport.h
index 502833cd31..5130a62a65 100644
--- a/src/plugins/baremetal/baremetaldebugsupport.h
+++ b/src/plugins/baremetal/baremetaldebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALDEBUGSUPPORT_H
-#define BAREMETALDEBUGSUPPORT_H
+#pragma once
 
 #include <QObject>
 #include <QPointer>
@@ -82,5 +81,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALDEBUGSUPPORT_H
diff --git a/src/plugins/baremetal/baremetaldevice.h b/src/plugins/baremetal/baremetaldevice.h
index 6707040038..6fbb00c7e1 100644
--- a/src/plugins/baremetal/baremetaldevice.h
+++ b/src/plugins/baremetal/baremetaldevice.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALDEVICE_H
-#define BAREMETALDEVICE_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 
@@ -74,5 +73,3 @@ private:
 
 } //namespace Internal
 } //namespace BareMetal
-
-#endif // BAREMETALDEVICE_H
diff --git a/src/plugins/baremetal/baremetaldeviceconfigurationfactory.h b/src/plugins/baremetal/baremetaldeviceconfigurationfactory.h
index ee55c7dc22..c05b9afa78 100644
--- a/src/plugins/baremetal/baremetaldeviceconfigurationfactory.h
+++ b/src/plugins/baremetal/baremetaldeviceconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALDEVICECONFIGURATIONFACTORY_H
-#define BAREMETALDEVICECONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicefactory.h>
 
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALDEVICECONFIGURATIONFACTORY_H
diff --git a/src/plugins/baremetal/baremetaldeviceconfigurationwidget.h b/src/plugins/baremetal/baremetaldeviceconfigurationwidget.h
index 660e85c565..520eeb81d8 100644
--- a/src/plugins/baremetal/baremetaldeviceconfigurationwidget.h
+++ b/src/plugins/baremetal/baremetaldeviceconfigurationwidget.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALDEVICECONFIGURATIONWIDGET_H
-#define BAREMETALDEVICECONFIGURATIONWIDGET_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicewidget.h>
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALDEVICECONFIGURATIONWIDGET_H
diff --git a/src/plugins/baremetal/baremetaldeviceconfigurationwizard.h b/src/plugins/baremetal/baremetaldeviceconfigurationwizard.h
index 1e99ec890d..dd49659021 100644
--- a/src/plugins/baremetal/baremetaldeviceconfigurationwizard.h
+++ b/src/plugins/baremetal/baremetaldeviceconfigurationwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALDEVICECONFIGURATIONWIZARD_H
-#define BAREMETALDEVICECONFIGURATIONWIZARD_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 #include <utils/wizard.h>
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALDEVICECONFIGURATIONWIZARD_H
diff --git a/src/plugins/baremetal/baremetaldeviceconfigurationwizardpages.h b/src/plugins/baremetal/baremetaldeviceconfigurationwizardpages.h
index 71a5cac00f..af61c11d65 100644
--- a/src/plugins/baremetal/baremetaldeviceconfigurationwizardpages.h
+++ b/src/plugins/baremetal/baremetaldeviceconfigurationwizardpages.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALDEVICECONFIGURATIONWIZARDPAGES_H
-#define BAREMETALDEVICECONFIGURATIONWIZARDPAGES_H
+#pragma once
 
 #include <QWizardPage>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALDEVICECONFIGURATIONWIZARDPAGES_H
diff --git a/src/plugins/baremetal/baremetalgdbcommandsdeploystep.h b/src/plugins/baremetal/baremetalgdbcommandsdeploystep.h
index 8ef99da7ba..0c0b610f7d 100644
--- a/src/plugins/baremetal/baremetalgdbcommandsdeploystep.h
+++ b/src/plugins/baremetal/baremetalgdbcommandsdeploystep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALGDBCOMMANDSDEPLOYSTEP_H
-#define BAREMETALGDBCOMMANDSDEPLOYSTEP_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALGDBCOMMANDSDEPLOYSTEP_H
diff --git a/src/plugins/baremetal/baremetalplugin.h b/src/plugins/baremetal/baremetalplugin.h
index 69ca47fe79..92cb604a82 100644
--- a/src/plugins/baremetal/baremetalplugin.h
+++ b/src/plugins/baremetal/baremetalplugin.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETAL_H
-#define BAREMETAL_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETAL_H
diff --git a/src/plugins/baremetal/baremetalrunconfiguration.h b/src/plugins/baremetal/baremetalrunconfiguration.h
index b000f31b0b..d69287059b 100644
--- a/src/plugins/baremetal/baremetalrunconfiguration.h
+++ b/src/plugins/baremetal/baremetalrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALRUNCONFIGURATION_H
-#define BAREMETALRUNCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -87,5 +86,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALRUNCONFIGURATION_H
diff --git a/src/plugins/baremetal/baremetalrunconfigurationfactory.h b/src/plugins/baremetal/baremetalrunconfigurationfactory.h
index c83fd163a0..eff00764e5 100644
--- a/src/plugins/baremetal/baremetalrunconfigurationfactory.h
+++ b/src/plugins/baremetal/baremetalrunconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALRUNCONFIGURATIONFACTORY_H
-#define BAREMETALRUNCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // BAREMETALRUNCONFIGURATIONFACTORY_H
diff --git a/src/plugins/baremetal/baremetalrunconfigurationwidget.h b/src/plugins/baremetal/baremetalrunconfigurationwidget.h
index a4e4060dbd..d6c0d5347c 100644
--- a/src/plugins/baremetal/baremetalrunconfigurationwidget.h
+++ b/src/plugins/baremetal/baremetalrunconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALRUNCONFIGURATIONWIDGET_H
-#define BAREMETALRUNCONFIGURATIONWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALRUNCONFIGURATIONWIDGET_H
diff --git a/src/plugins/baremetal/baremetalruncontrolfactory.h b/src/plugins/baremetal/baremetalruncontrolfactory.h
index 740d7138c5..1cab1af9ee 100644
--- a/src/plugins/baremetal/baremetalruncontrolfactory.h
+++ b/src/plugins/baremetal/baremetalruncontrolfactory.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef BAREMETALRUNCONTROLFACTORY_H
-#define BAREMETALRUNCONTROLFACTORY_H
+#pragma once
 
 #include "baremetalrunconfiguration.h"
 
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // BAREMETALRUNCONTROLFACTORY_H
diff --git a/src/plugins/baremetal/defaultgdbserverprovider.h b/src/plugins/baremetal/defaultgdbserverprovider.h
index de672f2f68..2c114ec63f 100644
--- a/src/plugins/baremetal/defaultgdbserverprovider.h
+++ b/src/plugins/baremetal/defaultgdbserverprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEFAULTGDBSERVERPROVIDER_H
-#define DEFAULTGDBSERVERPROVIDER_H
+#pragma once
 
 #include "gdbserverprovider.h"
 
@@ -104,5 +103,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // DEFAULTGDBSERVERPROVIDER_H
diff --git a/src/plugins/baremetal/gdbserverprovider.h b/src/plugins/baremetal/gdbserverprovider.h
index 6718a45bfa..a206f5acb5 100644
--- a/src/plugins/baremetal/gdbserverprovider.h
+++ b/src/plugins/baremetal/gdbserverprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBSERVERPROVIDER_H
-#define GDBSERVERPROVIDER_H
+#pragma once
 
 #include <QObject>
 #include <QVariantMap>
@@ -197,5 +196,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // GDBSERVERPROVIDER_H
diff --git a/src/plugins/baremetal/gdbserverproviderchooser.h b/src/plugins/baremetal/gdbserverproviderchooser.h
index 9f26f7a2d4..a5e090516a 100644
--- a/src/plugins/baremetal/gdbserverproviderchooser.h
+++ b/src/plugins/baremetal/gdbserverproviderchooser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBSERVERPROVIDERCHOOSER_H
-#define GDBSERVERPROVIDERCHOOSER_H
+#pragma once
 
 #include <QWidget>
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // GDBSERVERPROVIDERCHOOSER_H
diff --git a/src/plugins/baremetal/gdbserverprovidermanager.h b/src/plugins/baremetal/gdbserverprovidermanager.h
index 2d5097de32..33cbbcea44 100644
--- a/src/plugins/baremetal/gdbserverprovidermanager.h
+++ b/src/plugins/baremetal/gdbserverprovidermanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBSERVERPROVIDERMANAGER_H
-#define GDBSERVERPROVIDERMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QList>
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // GDBSERVERPROVIDERMANAGER_H
diff --git a/src/plugins/baremetal/gdbserverproviderprocess.h b/src/plugins/baremetal/gdbserverproviderprocess.h
index af69851780..fde68ab59d 100644
--- a/src/plugins/baremetal/gdbserverproviderprocess.h
+++ b/src/plugins/baremetal/gdbserverproviderprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBSERVERPROVIDERPROCESS_H
-#define GDBSERVERPROVIDERPROCESS_H
+#pragma once
 
 #include <projectexplorer/devicesupport/deviceprocess.h>
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // GDBSERVERPROVIDERPROCESS_H
diff --git a/src/plugins/baremetal/gdbserverproviderssettingspage.h b/src/plugins/baremetal/gdbserverproviderssettingspage.h
index 800bdce621..be8e00c422 100644
--- a/src/plugins/baremetal/gdbserverproviderssettingspage.h
+++ b/src/plugins/baremetal/gdbserverproviderssettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBSERVERPROVIDERSSETTINGSPAGE_H
-#define GDBSERVERPROVIDERSSETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -95,5 +94,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // GDBSERVERPROVIDERSSETTINGSPAGE_H
diff --git a/src/plugins/baremetal/openocdgdbserverprovider.h b/src/plugins/baremetal/openocdgdbserverprovider.h
index 29db9ebbc3..68ef66bc25 100644
--- a/src/plugins/baremetal/openocdgdbserverprovider.h
+++ b/src/plugins/baremetal/openocdgdbserverprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENOCDGDBSERVERPROVIDER_H
-#define OPENOCDGDBSERVERPROVIDER_H
+#pragma once
 
 #include "gdbserverprovider.h"
 
@@ -116,5 +115,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // OPENOCDGDBSERVERPROVIDER_H
diff --git a/src/plugins/baremetal/stlinkutilgdbserverprovider.h b/src/plugins/baremetal/stlinkutilgdbserverprovider.h
index 0b9c5b43fc..288bb3177b 100644
--- a/src/plugins/baremetal/stlinkutilgdbserverprovider.h
+++ b/src/plugins/baremetal/stlinkutilgdbserverprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STLINKUTILGDBSERVERPROVIDER_H
-#define STLINKUTILGDBSERVERPROVIDER_H
+#pragma once
 
 #include "gdbserverprovider.h"
 
@@ -128,5 +127,3 @@ private:
 
 } // namespace Internal
 } // namespace BareMetal
-
-#endif // STLINKUTILGDBSERVERPROVIDER_H
diff --git a/src/plugins/beautifier/abstractsettings.h b/src/plugins/beautifier/abstractsettings.h
index 88c1dce543..86195857fa 100644
--- a/src/plugins/beautifier/abstractsettings.h
+++ b/src/plugins/beautifier/abstractsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_ABSTRACTSETTINGS_H
-#define BEAUTIFIER_ABSTRACTSETTINGS_H
+#pragma once
 
 #include <QCoreApplication>
 #include <QDir>
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_ABSTRACTSETTINGS_H
diff --git a/src/plugins/beautifier/artisticstyle/artisticstyle.h b/src/plugins/beautifier/artisticstyle/artisticstyle.h
index 29bc1cce72..1bf00d0c77 100644
--- a/src/plugins/beautifier/artisticstyle/artisticstyle.h
+++ b/src/plugins/beautifier/artisticstyle/artisticstyle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_ARTISTICSTYLE_H
-#define BEAUTIFIER_ARTISTICSTYLE_H
+#pragma once
 
 #include "../beautifierabstracttool.h"
 #include "../command.h"
@@ -65,5 +64,3 @@ private:
 } // namespace ArtisticStyle
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_ARTISTICSTYLE_H
diff --git a/src/plugins/beautifier/artisticstyle/artisticstyleconstants.h b/src/plugins/beautifier/artisticstyle/artisticstyleconstants.h
index 743c21d4f6..88a98ec457 100644
--- a/src/plugins/beautifier/artisticstyle/artisticstyleconstants.h
+++ b/src/plugins/beautifier/artisticstyle/artisticstyleconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_ARTISTICSTYLECONSTANTS_H
-#define BEAUTIFIER_ARTISTICSTYLECONSTANTS_H
+#pragma once
 
 namespace Beautifier {
 namespace Constants {
@@ -39,5 +38,3 @@ const char SETTINGS_NAME[]         = "artisticstyle";
 } // namespace ArtisticStyle
 } // namespace Constants
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_ARTISTICSTYLECONSTANTS_H
diff --git a/src/plugins/beautifier/artisticstyle/artisticstyleoptionspage.h b/src/plugins/beautifier/artisticstyle/artisticstyleoptionspage.h
index 470d0e6054..d31b8f80f1 100644
--- a/src/plugins/beautifier/artisticstyle/artisticstyleoptionspage.h
+++ b/src/plugins/beautifier/artisticstyle/artisticstyleoptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_ARTISTICSTYLEOPTIONSPAGE_H
-#define BEAUTIFIER_ARTISTICSTYLEOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -72,6 +71,3 @@ private:
 } // namespace ArtisticStyle
 } // namespace Internal
 } // namespace Beautifier
-
-
-#endif // BEAUTIFIER_ARTISTICSTYLEOPTIONSPAGE_H
diff --git a/src/plugins/beautifier/artisticstyle/artisticstylesettings.h b/src/plugins/beautifier/artisticstyle/artisticstylesettings.h
index 9085d90165..e1094743c7 100644
--- a/src/plugins/beautifier/artisticstyle/artisticstylesettings.h
+++ b/src/plugins/beautifier/artisticstyle/artisticstylesettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_ARTISTICSTYLESETTINGS_H
-#define BEAUTIFIER_ARTISTICSTYLESETTINGS_H
+#pragma once
 
 #include "../abstractsettings.h"
 
@@ -75,5 +74,3 @@ private:
 } // namespace ArtisticStyle
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_ARTISTICSTYLESETTINGS_H
diff --git a/src/plugins/beautifier/beautifierabstracttool.h b/src/plugins/beautifier/beautifierabstracttool.h
index 080183c140..3d12980bfa 100644
--- a/src/plugins/beautifier/beautifierabstracttool.h
+++ b/src/plugins/beautifier/beautifierabstracttool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_BEAUTIFIERABSTRACTTOOL_H
-#define BEAUTIFIER_BEAUTIFIERABSTRACTTOOL_H
+#pragma once
 
 #include <QList>
 #include <QObject>
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_BEAUTIFIERABSTRACTTOOL_H
diff --git a/src/plugins/beautifier/beautifierconstants.h b/src/plugins/beautifier/beautifierconstants.h
index deb0502b31..3bfa94b39f 100644
--- a/src/plugins/beautifier/beautifierconstants.h
+++ b/src/plugins/beautifier/beautifierconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_BEAUTIFIERCONSTANTS_H
-#define BEAUTIFIER_BEAUTIFIERCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -47,6 +46,3 @@ const char DOCUMENTATION_XMLDOC[]   = "doc";
 
 } // namespace Constants
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_BEAUTIFIERCONSTANTS_H
-
diff --git a/src/plugins/beautifier/beautifierplugin.h b/src/plugins/beautifier/beautifierplugin.h
index 49dfd06690..6e310eb818 100644
--- a/src/plugins/beautifier/beautifierplugin.h
+++ b/src/plugins/beautifier/beautifierplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_BEAUTIFIER_H
-#define BEAUTIFIER_BEAUTIFIER_H
+#pragma once
 
 #include "command.h"
 
@@ -102,6 +101,3 @@ private:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_BEAUTIFIER_H
-
diff --git a/src/plugins/beautifier/clangformat/clangformat.h b/src/plugins/beautifier/clangformat/clangformat.h
index 3a71b3ba93..83f2f5ec5b 100644
--- a/src/plugins/beautifier/clangformat/clangformat.h
+++ b/src/plugins/beautifier/clangformat/clangformat.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CLANGFORMAT_H
-#define BEAUTIFIER_CLANGFORMAT_H
+#pragma once
 
 #include "../beautifierabstracttool.h"
 #include "../command.h"
@@ -67,5 +66,3 @@ private:
 } // namespace ClangFormat
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CLANGFORMAT_H
diff --git a/src/plugins/beautifier/clangformat/clangformatconstants.h b/src/plugins/beautifier/clangformat/clangformatconstants.h
index fb0218cc65..51f6fa1bf8 100644
--- a/src/plugins/beautifier/clangformat/clangformatconstants.h
+++ b/src/plugins/beautifier/clangformat/clangformatconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CLANGFORMATCONSTANTS_H
-#define BEAUTIFIER_CLANGFORMATCONSTANTS_H
+#pragma once
 
 namespace Beautifier {
 namespace Constants {
@@ -40,5 +39,3 @@ const char SETTINGS_NAME[]         = "clangformat";
 } // namespace ClangFormat
 } // namespace Constants
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CLANGFORMATCONSTANTS_H
diff --git a/src/plugins/beautifier/clangformat/clangformatoptionspage.h b/src/plugins/beautifier/clangformat/clangformatoptionspage.h
index 5947fab240..60f9f77b46 100644
--- a/src/plugins/beautifier/clangformat/clangformatoptionspage.h
+++ b/src/plugins/beautifier/clangformat/clangformatoptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CLANGFORMATOPTIONSPAGE_H
-#define BEAUTIFIER_CLANGFORMATOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -72,5 +71,3 @@ private:
 } // namespace ClangFormat
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CLANGFORMATOPTIONSPAGE_H
diff --git a/src/plugins/beautifier/clangformat/clangformatsettings.h b/src/plugins/beautifier/clangformat/clangformatsettings.h
index f73a6cc7fd..783677123a 100644
--- a/src/plugins/beautifier/clangformat/clangformatsettings.h
+++ b/src/plugins/beautifier/clangformat/clangformatsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CLANGFORMATSETTINGS_H
-#define BEAUTIFIER_CLANGFORMATSETTINGS_H
+#pragma once
 
 #include "../abstractsettings.h"
 
@@ -62,5 +61,3 @@ public:
 } // namespace ClangFormat
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CLANGFORMATSETTINGS_H
diff --git a/src/plugins/beautifier/command.h b/src/plugins/beautifier/command.h
index e204db17f2..b374debaf1 100644
--- a/src/plugins/beautifier/command.h
+++ b/src/plugins/beautifier/command.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_COMMAND_H
-#define BEAUTIFIER_COMMAND_H
+#pragma once
 
 #include <QString>
 #include <QStringList>
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_COMMAND_H
diff --git a/src/plugins/beautifier/configurationdialog.h b/src/plugins/beautifier/configurationdialog.h
index 13e1a9825e..cc81096c14 100644
--- a/src/plugins/beautifier/configurationdialog.h
+++ b/src/plugins/beautifier/configurationdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CONFIGURATIONDIALOG_H
-#define BEAUTIFIER_CONFIGURATIONDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QString>
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CONFIGURATIONDIALOG_H
diff --git a/src/plugins/beautifier/configurationeditor.h b/src/plugins/beautifier/configurationeditor.h
index 27ed01a03b..9c72c79fc4 100644
--- a/src/plugins/beautifier/configurationeditor.h
+++ b/src/plugins/beautifier/configurationeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CONFIGURATIONEDITOR_H
-#define BEAUTIFIER_CONFIGURATIONEDITOR_H
+#pragma once
 
 
 #include <QPlainTextEdit>
@@ -97,5 +96,3 @@ private:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CONFIGURATIONEDITOR_H
diff --git a/src/plugins/beautifier/configurationpanel.h b/src/plugins/beautifier/configurationpanel.h
index 670cdc7a18..226f1bcc32 100644
--- a/src/plugins/beautifier/configurationpanel.h
+++ b/src/plugins/beautifier/configurationpanel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_CONFIGURATIONPANEL_H
-#define BEAUTIFIER_CONFIGURATIONPANEL_H
+#pragma once
 
 #include <QWidget>
 
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_CONFIGURATIONPANEL_H
diff --git a/src/plugins/beautifier/uncrustify/uncrustify.h b/src/plugins/beautifier/uncrustify/uncrustify.h
index 8861910dc5..495111b38f 100644
--- a/src/plugins/beautifier/uncrustify/uncrustify.h
+++ b/src/plugins/beautifier/uncrustify/uncrustify.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_UNCRUSTIFY_H
-#define BEAUTIFIER_UNCRUSTIFY_H
+#pragma once
 
 #include "../beautifierabstracttool.h"
 #include "../command.h"
@@ -67,5 +66,3 @@ private:
 } // namespace Uncrustify
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_UNCRUSTIFY_H
diff --git a/src/plugins/beautifier/uncrustify/uncrustifyconstants.h b/src/plugins/beautifier/uncrustify/uncrustifyconstants.h
index 4b8dd0de29..9936689c3f 100644
--- a/src/plugins/beautifier/uncrustify/uncrustifyconstants.h
+++ b/src/plugins/beautifier/uncrustify/uncrustifyconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_UNCRUSTIFYCONSTANTS_H
-#define BEAUTIFIER_UNCRUSTIFYCONSTANTS_H
+#pragma once
 
 namespace Beautifier {
 namespace Constants {
@@ -40,5 +39,3 @@ const char SETTINGS_NAME[]         = "uncrustify";
 } // namespace Uncrustify
 } // namespace Constants
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_UNCRUSTIFYCONSTANTS_H
diff --git a/src/plugins/beautifier/uncrustify/uncrustifyoptionspage.h b/src/plugins/beautifier/uncrustify/uncrustifyoptionspage.h
index 2f833d48fa..656edce2d9 100644
--- a/src/plugins/beautifier/uncrustify/uncrustifyoptionspage.h
+++ b/src/plugins/beautifier/uncrustify/uncrustifyoptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_UNCRUSTIFYOPTIONSPAGE_H
-#define BEAUTIFIER_UNCRUSTIFYOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -72,6 +71,3 @@ private:
 } // namespace Uncrustify
 } // namespace Internal
 } // namespace Beautifier
-
-
-#endif // BEAUTIFIER_UNCRUSTIFYOPTIONSPAGE_H
diff --git a/src/plugins/beautifier/uncrustify/uncrustifysettings.h b/src/plugins/beautifier/uncrustify/uncrustifysettings.h
index 3306177faf..2725323186 100644
--- a/src/plugins/beautifier/uncrustify/uncrustifysettings.h
+++ b/src/plugins/beautifier/uncrustify/uncrustifysettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEAUTIFIER_UNCRUSTIFYSETTINGS_H
-#define BEAUTIFIER_UNCRUSTIFYSETTINGS_H
+#pragma once
 
 #include "../abstractsettings.h"
 
@@ -60,5 +59,3 @@ public:
 } // namespace Uncrustify
 } // namespace Internal
 } // namespace Beautifier
-
-#endif // BEAUTIFIER_UNCRUSTIFYSETTINGS_H
diff --git a/src/plugins/bineditor/bineditor.h b/src/plugins/bineditor/bineditor.h
index f8e7433125..a742e9e07d 100644
--- a/src/plugins/bineditor/bineditor.h
+++ b/src/plugins/bineditor/bineditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BINEDITOR_H
-#define BINEDITOR_H
+#pragma once
 
 #include "markup.h"
 
@@ -244,5 +243,3 @@ private:
 };
 
 } // namespace BinEditor
-
-#endif // BINEDITOR_H
diff --git a/src/plugins/bineditor/bineditorconstants.h b/src/plugins/bineditor/bineditorconstants.h
index fbade116e5..940f0a0606 100644
--- a/src/plugins/bineditor/bineditorconstants.h
+++ b/src/plugins/bineditor/bineditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BINEDITORCONSTANTS_H
-#define BINEDITORCONSTANTS_H
+#pragma once
 
 namespace BinEditor {
 namespace Constants {
@@ -35,5 +34,3 @@ const char C_BINEDITOR_MIMETYPE[] = "application/octet-stream";
 
 } // namespace Constants
 } // namespace BinEditor
-
-#endif // BINEDITORCONSTANTS_H
diff --git a/src/plugins/bineditor/bineditorplugin.h b/src/plugins/bineditor/bineditorplugin.h
index eb0b72ad46..2dba62e5e9 100644
--- a/src/plugins/bineditor/bineditorplugin.h
+++ b/src/plugins/bineditor/bineditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BINEDITORPLUGIN_H
-#define BINEDITORPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <coreplugin/editormanager/ieditorfactory.h>
@@ -92,5 +91,3 @@ private:
 
 } // namespace Internal
 } // namespace BinEditor
-
-#endif // BINEDITORPLUGIN_H
diff --git a/src/plugins/bineditor/markup.h b/src/plugins/bineditor/markup.h
index c024fbd247..3a976ab1d4 100644
--- a/src/plugins/bineditor/markup.h
+++ b/src/plugins/bineditor/markup.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MARKUP_H
-#define MARKUP_H
+#pragma once
 
 #include <QColor>
 #include <QString>
@@ -49,5 +48,3 @@ public:
 } // namespace BinEditor
 
 Q_DECLARE_METATYPE(BinEditor::Markup)
-
-#endif // MARKUP_H
diff --git a/src/plugins/bookmarks/bookmark.h b/src/plugins/bookmarks/bookmark.h
index e1cb8b6b51..af9c219b9c 100644
--- a/src/plugins/bookmarks/bookmark.h
+++ b/src/plugins/bookmarks/bookmark.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BOOKMARK_H
-#define BOOKMARK_H
+#pragma once
 
 #include <texteditor/textmark.h>
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Internal
 } // namespace Bookmarks
-
-#endif // BOOKMARK_H
diff --git a/src/plugins/bookmarks/bookmarkmanager.h b/src/plugins/bookmarks/bookmarkmanager.h
index d136225362..0bc81ad135 100644
--- a/src/plugins/bookmarks/bookmarkmanager.h
+++ b/src/plugins/bookmarks/bookmarkmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BOOKMARKMANAGER_H
-#define BOOKMARKMANAGER_H
+#pragma once
 
 #include <utils/itemviews.h>
 #include <coreplugin/editormanager/ieditor.h>
@@ -188,5 +187,3 @@ private:
 
 } // namespace Internal
 } // namespace Bookmarks
-
-#endif // BOOKMARKMANAGER_H
diff --git a/src/plugins/bookmarks/bookmarks_global.h b/src/plugins/bookmarks/bookmarks_global.h
index b1cab45207..6f22b7eb09 100644
--- a/src/plugins/bookmarks/bookmarks_global.h
+++ b/src/plugins/bookmarks/bookmarks_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BOOKMARKS_GLOBAL_H
-#define BOOKMARKS_GLOBAL_H
+#pragma once
 
 namespace Bookmarks {
 namespace Constants {
@@ -46,6 +45,3 @@ const char BOOKMARKS_CONTEXT[]            = "Bookmarks";
 
 } // namespace Constants
 } // namespace Bookmarks
-
-#endif // BOOKMARKS_GLOBAL_H
-
diff --git a/src/plugins/bookmarks/bookmarksplugin.h b/src/plugins/bookmarks/bookmarksplugin.h
index 58bbc5e3f2..4cb16b2218 100644
--- a/src/plugins/bookmarks/bookmarksplugin.h
+++ b/src/plugins/bookmarks/bookmarksplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BOOKMARKSPLUGIN_H
-#define BOOKMARKSPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace Bookmarks
-
-#endif // BOOKMARKS_H
diff --git a/src/plugins/clangcodemodel/clangactivationsequencecontextprocessor.h b/src/plugins/clangcodemodel/clangactivationsequencecontextprocessor.h
index 0e0bd55f84..6bb25da086 100644
--- a/src/plugins/clangcodemodel/clangactivationsequencecontextprocessor.h
+++ b/src/plugins/clangcodemodel/clangactivationsequencecontextprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_ACTIVATIONSEQUENCECONTEXTPROCESSOR_H
-#define CLANGCODEMODEL_INTERNAL_ACTIVATIONSEQUENCECONTEXTPROCESSOR_H
+#pragma once
 
 #include <clangcodemodel/clangcompletionassistinterface.h>
 
@@ -87,5 +86,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_ACTIVATIONSEQUENCECONTEXTPROCESSOR_H
diff --git a/src/plugins/clangcodemodel/clangactivationsequenceprocessor.h b/src/plugins/clangcodemodel/clangactivationsequenceprocessor.h
index cb674fbf19..d8d4d77ed2 100644
--- a/src/plugins/clangcodemodel/clangactivationsequenceprocessor.h
+++ b/src/plugins/clangcodemodel/clangactivationsequenceprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_ACTIVATIONSEQUENCEPROCESSOR_H
-#define CLANGCODEMODEL_INTERNAL_ACTIVATIONSEQUENCEPROCESSOR_H
+#pragma once
 
 #include <cplusplus/Token.h>
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_ACTIVATIONSEQUENCEPROCESSOR_H
diff --git a/src/plugins/clangcodemodel/clangassistproposal.h b/src/plugins/clangcodemodel/clangassistproposal.h
index 9c201c2cc0..8fc29b8374 100644
--- a/src/plugins/clangcodemodel/clangassistproposal.h
+++ b/src/plugins/clangcodemodel/clangassistproposal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSAL_H
-#define CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSAL_H
+#pragma once
 
 #include "clangassistproposalmodel.h"
 
@@ -44,5 +43,3 @@ public:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSAL_H
diff --git a/src/plugins/clangcodemodel/clangassistproposalitem.h b/src/plugins/clangcodemodel/clangassistproposalitem.h
index 5e7ec8fefa..442764bdbf 100644
--- a/src/plugins/clangcodemodel/clangassistproposalitem.h
+++ b/src/plugins/clangcodemodel/clangassistproposalitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSALITEM_H
-#define CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSALITEM_H
+#pragma once
 
 #include <codecompletion.h>
 
@@ -70,5 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSALITEM_H
diff --git a/src/plugins/clangcodemodel/clangassistproposalmodel.h b/src/plugins/clangcodemodel/clangassistproposalmodel.h
index e722daf03d..32b25bf9d0 100644
--- a/src/plugins/clangcodemodel/clangassistproposalmodel.h
+++ b/src/plugins/clangcodemodel/clangassistproposalmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSALMODEL_H
-#define CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSALMODEL_H
+#pragma once
 
 #include <cplusplus/Token.h>
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGASSISTPROPOSALMODEL_H
diff --git a/src/plugins/clangcodemodel/clangbackendipcintegration.h b/src/plugins/clangcodemodel/clangbackendipcintegration.h
index 2871ec3062..66b9c05111 100644
--- a/src/plugins/clangcodemodel/clangbackendipcintegration.h
+++ b/src/plugins/clangcodemodel/clangbackendipcintegration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGBACKENDIPCINTEGRATION_H
-#define CLANGCODEMODEL_INTERNAL_CLANGBACKENDIPCINTEGRATION_H
+#pragma once
 
 #include <cpptools/projectpart.h>
 
@@ -187,5 +186,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGBACKENDIPCINTEGRATION_H
diff --git a/src/plugins/clangcodemodel/clangcodemodelplugin.h b/src/plugins/clangcodemodel/clangcodemodelplugin.h
index fb6be15ad0..0b94c93c2c 100644
--- a/src/plugins/clangcodemodel/clangcodemodelplugin.h
+++ b/src/plugins/clangcodemodel/clangcodemodelplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODELPLUGIN_H
-#define CLANGCODEMODELPLUGIN_H
+#pragma once
 
 #include "clangmodelmanagersupport.h"
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Clang
-
-#endif // CLANGCODEMODELPLUGIN_H
diff --git a/src/plugins/clangcodemodel/clangcompletionassistinterface.h b/src/plugins/clangcodemodel/clangcompletionassistinterface.h
index 6012cf6508..fc0724777e 100644
--- a/src/plugins/clangcodemodel/clangcompletionassistinterface.h
+++ b/src/plugins/clangcodemodel/clangcompletionassistinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTINTERFACE_H
-#define CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTINTERFACE_H
+#pragma once
 
 #include "clangbackendipcintegration.h"
 #include "clangutils.h"
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTINTERFACE_H
diff --git a/src/plugins/clangcodemodel/clangcompletionassistprocessor.h b/src/plugins/clangcodemodel/clangcompletionassistprocessor.h
index cfc1604b86..56779a4b01 100644
--- a/src/plugins/clangcodemodel/clangcompletionassistprocessor.h
+++ b/src/plugins/clangcodemodel/clangcompletionassistprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTPROCESSOR_H
-#define CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTPROCESSOR_H
+#pragma once
 
 #include "clangcompletionassistinterface.h"
 
@@ -96,5 +95,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTPROCESSOR_H
diff --git a/src/plugins/clangcodemodel/clangcompletionassistprovider.h b/src/plugins/clangcodemodel/clangcompletionassistprovider.h
index 8e752f289f..7c1ac168be 100644
--- a/src/plugins/clangcodemodel/clangcompletionassistprovider.h
+++ b/src/plugins/clangcodemodel/clangcompletionassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTPROVIDER_H
-#define CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTPROVIDER_H
+#pragma once
 
 #include "clangbackendipcintegration.h"
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGCOMPLETIONASSISTPROVIDER_H
diff --git a/src/plugins/clangcodemodel/clangcompletionchunkstotextconverter.h b/src/plugins/clangcodemodel/clangcompletionchunkstotextconverter.h
index 57c5e2b8f1..8b0590fda6 100644
--- a/src/plugins/clangcodemodel/clangcompletionchunkstotextconverter.h
+++ b/src/plugins/clangcodemodel/clangcompletionchunkstotextconverter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_COMPLETIONCHUNKSTOTEXTCONVERTER_H
-#define CLANGCODEMODEL_INTERNAL_COMPLETIONCHUNKSTOTEXTCONVERTER_H
+#pragma once
 
 #include <clangbackendipc/codecompletionchunk.h>
 
@@ -106,5 +105,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_COMPLETIONCHUNKSTOTEXTCONVERTER_H
diff --git a/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h b/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h
index 4041f531a4..8f0e79a45b 100644
--- a/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h
+++ b/src/plugins/clangcodemodel/clangcompletioncontextanalyzer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCOMPLETIONCONTEXTANALYZER_H
-#define CLANGCOMPLETIONCONTEXTANALYZER_H
+#pragma once
 
 #include <cplusplus/Token.h>
 
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCOMPLETIONCONTEXTANALYZER_H
diff --git a/src/plugins/clangcodemodel/clangconstants.h b/src/plugins/clangcodemodel/clangconstants.h
index 90466029f3..6197ba5412 100644
--- a/src/plugins/clangcodemodel/clangconstants.h
+++ b/src/plugins/clangcodemodel/clangconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCONSTANTS_H
-#define CLANGCONSTANTS_H
+#pragma once
 
 namespace ClangCodeModel {
 namespace Constants {
@@ -35,5 +34,3 @@ const char CLANG_WARNING[] = "Clang.Warning";
 
 } // namespace Constants
 } // namespace ClangCodeModel
-
-#endif // CLANGCONSTANTS_H
diff --git a/src/plugins/clangcodemodel/clangdiagnosticfilter.h b/src/plugins/clangcodemodel/clangdiagnosticfilter.h
index c4384160be..9329d43ceb 100644
--- a/src/plugins/clangcodemodel/clangdiagnosticfilter.h
+++ b/src/plugins/clangcodemodel/clangdiagnosticfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGDIAGNOSTICFILTER_H
-#define CLANGCODEMODEL_INTERNAL_CLANGDIAGNOSTICFILTER_H
+#pragma once
 
 #include <clangbackendipc/diagnosticcontainer.h>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGDIAGNOSTICFILTER_H
diff --git a/src/plugins/clangcodemodel/clangdiagnosticmanager.h b/src/plugins/clangcodemodel/clangdiagnosticmanager.h
index dbfd72ec04..45def83d3a 100644
--- a/src/plugins/clangcodemodel/clangdiagnosticmanager.h
+++ b/src/plugins/clangcodemodel/clangdiagnosticmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGDIAGNOSTICMANAGER_H
-#define CLANGCODEMODEL_INTERNAL_CLANGDIAGNOSTICMANAGER_H
+#pragma once
 
 #include "clangtextmark.h"
 
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGDIAGNOSTICMANAGER_H
diff --git a/src/plugins/clangcodemodel/clangeditordocumentparser.h b/src/plugins/clangcodemodel/clangeditordocumentparser.h
index 17749428f0..65da483e2f 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentparser.h
+++ b/src/plugins/clangcodemodel/clangeditordocumentparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGEDITORDOCUMENTPARSER_H
-#define CLANGEDITORDOCUMENTPARSER_H
+#pragma once
 
 #include <cpptools/baseeditordocumentparser.h>
 
@@ -42,5 +41,3 @@ private:
 };
 
 } // namespace ClangCodeModel
-
-#endif // CLANGEDITORDOCUMENTPARSER_H
diff --git a/src/plugins/clangcodemodel/clangeditordocumentprocessor.h b/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
index a2a9755e25..31c4f5e9a6 100644
--- a/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
+++ b/src/plugins/clangcodemodel/clangeditordocumentprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGEDITORDOCUMENTPROCESSOR_H
-#define CLANGEDITORDOCUMENTPROCESSOR_H
+#pragma once
 
 #include "clangdiagnosticmanager.h"
 #include "clangeditordocumentparser.h"
@@ -114,5 +113,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGEDITORDOCUMENTPROCESSOR_H
diff --git a/src/plugins/clangcodemodel/clangfixitoperation.h b/src/plugins/clangcodemodel/clangfixitoperation.h
index 95e0df846f..83a8c8ed2e 100644
--- a/src/plugins/clangcodemodel/clangfixitoperation.h
+++ b/src/plugins/clangcodemodel/clangfixitoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_CLANGFIXITOPERATION_H
-#define CLANGCODEMODEL_CLANGFIXITOPERATION_H
+#pragma once
 
 #include <texteditor/quickfix.h>
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_CLANGFIXITOPERATION_H
diff --git a/src/plugins/clangcodemodel/clangfixitoperationsextractor.h b/src/plugins/clangcodemodel/clangfixitoperationsextractor.h
index 8477a5308a..e504d27dea 100644
--- a/src/plugins/clangcodemodel/clangfixitoperationsextractor.h
+++ b/src/plugins/clangcodemodel/clangfixitoperationsextractor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGFIXITOPERATIONSEXTRACTOR_H
-#define CLANGFIXITOPERATIONSEXTRACTOR_H
+#pragma once
 
 #include <texteditor/quickfix.h>
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace ClangCodeModel
-
-#endif // CLANGFIXITOPERATIONSEXTRACTOR_H
diff --git a/src/plugins/clangcodemodel/clangfunctionhintmodel.h b/src/plugins/clangcodemodel/clangfunctionhintmodel.h
index 32d25db1b4..edfb2f6d74 100644
--- a/src/plugins/clangcodemodel/clangfunctionhintmodel.h
+++ b/src/plugins/clangcodemodel/clangfunctionhintmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGFUNCTIONHINTMODEL_H
-#define CLANGCODEMODEL_INTERNAL_CLANGFUNCTIONHINTMODEL_H
+#pragma once
 
 #include <codecompletion.h>
 
@@ -50,5 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGFUNCTIONHINTMODEL_H
diff --git a/src/plugins/clangcodemodel/clanghighlightingmarksreporter.h b/src/plugins/clangcodemodel/clanghighlightingmarksreporter.h
index b275982d1e..af4f1773b0 100644
--- a/src/plugins/clangcodemodel/clanghighlightingmarksreporter.h
+++ b/src/plugins/clangcodemodel/clanghighlightingmarksreporter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_HIGHLIGHTINGMARKSREPORTER_H
-#define CLANGCODEMODEL_HIGHLIGHTINGMARKSREPORTER_H
+#pragma once
 
 #include <QFutureInterface>
 #include <QObject>
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_HIGHLIGHTINGMARKSREPORTER_H
diff --git a/src/plugins/clangcodemodel/clangmodelmanagersupport.h b/src/plugins/clangcodemodel/clangmodelmanagersupport.h
index 8e37c28f18..4a6a791db7 100644
--- a/src/plugins/clangcodemodel/clangmodelmanagersupport.h
+++ b/src/plugins/clangcodemodel/clangmodelmanagersupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_INTERNAL_CLANGMODELMANAGERSUPPORT_H
-#define CLANGCODEMODEL_INTERNAL_CLANGMODELMANAGERSUPPORT_H
+#pragma once
 
 #include "clangcompletionassistprovider.h"
 
@@ -112,5 +111,3 @@ public:
 
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_INTERNAL_CLANGMODELMANAGERSUPPORT_H
diff --git a/src/plugins/clangcodemodel/clangpreprocessorassistproposalitem.h b/src/plugins/clangcodemodel/clangpreprocessorassistproposalitem.h
index 771cb0aa3d..8498c8514f 100644
--- a/src/plugins/clangcodemodel/clangpreprocessorassistproposalitem.h
+++ b/src/plugins/clangcodemodel/clangpreprocessorassistproposalitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_PREPROCESSORASSISTPROPOSALITEM_H
-#define CLANGCODEMODEL_PREPROCESSORASSISTPROPOSALITEM_H
+#pragma once
 
 #include <texteditor/codeassist/assistproposaliteminterface.h>
 
@@ -70,5 +69,3 @@ private:
 };
 
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_PREPROCESSORASSISTPROPOSALITEM_H
diff --git a/src/plugins/clangcodemodel/clangtextmark.h b/src/plugins/clangcodemodel/clangtextmark.h
index ac70a50ccf..b669a86d16 100644
--- a/src/plugins/clangcodemodel/clangtextmark.h
+++ b/src/plugins/clangcodemodel/clangtextmark.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODEMODEL_CLANGTEXTMARK_H
-#define CLANGCODEMODEL_CLANGTEXTMARK_H
+#pragma once
 
 #include <clangbackendipc_global.h>
 
@@ -47,5 +46,3 @@ private:
 };
 
 } // namespace ClangCodeModel
-
-#endif // CLANGCODEMODEL_CLANGTEXTMARK_H
diff --git a/src/plugins/clangcodemodel/clangutils.h b/src/plugins/clangcodemodel/clangutils.h
index 44b574f368..4bdc6c00d4 100644
--- a/src/plugins/clangcodemodel/clangutils.h
+++ b/src/plugins/clangcodemodel/clangutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CLANGUTILS_H
-#define CPPTOOLS_CLANGUTILS_H
+#pragma once
 
 #include <cpptools/projectpart.h>
 
@@ -44,5 +43,3 @@ QString projectPartIdForFile(const QString &filePath);
 
 } // namespace Utils
 } // namespace Clang
-
-#endif // CPPTOOLS_CLANGUTILS_H
diff --git a/src/plugins/clangcodemodel/test/clangcodecompletion_test.h b/src/plugins/clangcodemodel/test/clangcodecompletion_test.h
index 54dba98c4e..bd9151bcac 100644
--- a/src/plugins/clangcodemodel/test/clangcodecompletion_test.h
+++ b/src/plugins/clangcodemodel/test/clangcodecompletion_test.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGCODECOMPLETIONTEST_H
-#define CLANGCODECOMPLETIONTEST_H
+#pragma once
 
 #include <QObject>
 
@@ -65,5 +64,3 @@ private slots:
 } // namespace Tests
 } // namespace Internal
 } // namespace ClangCodeModel
-
-#endif // CLANGCODECOMPLETIONTEST_H
diff --git a/src/plugins/clangcodemodel/test/data/myheader.h b/src/plugins/clangcodemodel/test/data/myheader.h
index da584c9137..b025d66c01 100644
--- a/src/plugins/clangcodemodel/test/data/myheader.h
+++ b/src/plugins/clangcodemodel/test/data/myheader.h
@@ -1,2 +1 @@
 int globalFromHeader;
-
diff --git a/src/plugins/clangcodemodel/test/data/qt-widgets-app/mainwindow.h b/src/plugins/clangcodemodel/test/data/qt-widgets-app/mainwindow.h
index d252888e89..596295b643 100644
--- a/src/plugins/clangcodemodel/test/data/qt-widgets-app/mainwindow.h
+++ b/src/plugins/clangcodemodel/test/data/qt-widgets-app/mainwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
+#pragma once
 
 #include <QMainWindow>
 
@@ -43,5 +42,3 @@ public:
 private:
     Ui::MainWindow *ui;
 };
-
-#endif // MAINWINDOW_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzer_global.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzer_global.h
index 39fb523976..c42bd95ccf 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzer_global.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzer_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZER_GLOBAL_H
-#define CLANGSTATICANALYZER_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define CLANGSTATICANALYZER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // CLANGSTATICANALYZER_GLOBAL_H
-
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerconfigwidget.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerconfigwidget.h
index 4655a07eec..f410670e50 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerconfigwidget.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERCONFIGWIDGET_H
-#define CLANGSTATICANALYZERCONFIGWIDGET_H
+#pragma once
 
 #include "clangstaticanalyzersettings.h"
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERCONFIGWIDGET_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerconstants.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerconstants.h
index 66b1f149fe..63982c8f1e 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerconstants.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERCONSTANTS_H
-#define CLANGSTATICANALYZERCONSTANTS_H
+#pragma once
 
 namespace ClangStaticAnalyzer {
 namespace Constants {
@@ -34,5 +33,3 @@ const char CLANGSTATICANALYZER_RUN_MODE[] = "ClangStaticAnalyzer.RunMode";
 
 } // Constants
 } // ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERCONSTANTS_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnostic.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnostic.h
index 708b5137f5..e40e90ec98 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnostic.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnostic.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALZYERDIAGNOSTIC_H
-#define CLANGSTATICANALZYERDIAGNOSTIC_H
+#pragma once
 
 #include <debugger/analyzer/diagnosticlocation.h>
 
@@ -67,5 +66,3 @@ public:
 } // namespace ClangStaticAnalyzer
 
 Q_DECLARE_METATYPE(ClangStaticAnalyzer::Internal::Diagnostic)
-
-#endif // CLANGSTATICANALZYERDIAGNOSTIC_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticmodel.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticmodel.h
index e8a30f34ef..d4bdcfbf58 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticmodel.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERDIAGNOSTICMODEL_H
-#define CLANGSTATICANALYZERDIAGNOSTICMODEL_H
+#pragma once
 
 #include "clangstaticanalyzerdiagnostic.h"
 #include "clangstaticanalyzerprojectsettings.h"
@@ -78,5 +77,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERDIAGNOSTICMODEL_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticview.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticview.h
index 55ba24642c..39a58804f9 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticview.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerdiagnosticview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERDIAGNOSTICVIEW_H
-#define CLANGSTATICANALYZERDIAGNOSTICVIEW_H
+#pragma once
 
 #include <debugger/analyzer/detailederrorview.h>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERDIAGNOSTICVIEW_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerlogfilereader.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerlogfilereader.h
index 8b05ada7aa..e29a4c1a10 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerlogfilereader.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerlogfilereader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERLOGFILEREADER_H
-#define CLANGSTATICANALYZERLOGFILEREADER_H
+#pragma once
 
 #include "clangstaticanalyzerdiagnostic.h"
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERLOGFILEREADER_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.h
index b663a16487..7d8d2fe1d0 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERPLUGIN_H
-#define CLANGSTATICANALYZERPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -56,6 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzerPlugin
-
-#endif // CLANGSTATICANALYZERPLUGIN_H
-
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettings.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettings.h
index f30298b69f..31a3941005 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettings.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERPROJECTSETTINGS_H
-#define CLANGSTATICANALYZERPROJECTSETTINGS_H
+#pragma once
 
 #include <projectexplorer/project.h>
 #include <utils/fileutils.h>
@@ -91,5 +90,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // Include guard.
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingsmanager.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingsmanager.h
index a588a7824d..50af615372 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingsmanager.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingsmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERPROJECTSETTINGSMANAGER_H
-#define CLANGSTATICANALYZERPROJECTSETTINGSMANAGER_H
+#pragma once
 
 namespace ProjectExplorer { class Project; }
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // Include guard.
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingswidget.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingswidget.h
index b68003b25c..18090788ac 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingswidget.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerprojectsettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERPROJECTSETTINGSWIDGET_H
-#define CLANGSTATICANALYZERPROJECTSETTINGSWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // Include guard.
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h
index 0293f4d3b1..0d286e17fe 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERRUNCONTROL_H
-#define CLANGSTATICANALYZERRUNCONTROL_H
+#pragma once
 
 #include <debugger/analyzer/analyzerruncontrol.h>
 #include <cpptools/projectinfo.h>
@@ -99,5 +98,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERRUNCONTROL_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h
index a116b1df94..13f4ac8043 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrolfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERRUNCONTROLFACTORY_H
-#define CLANGSTATICANALYZERRUNCONTROLFACTORY_H
+#pragma once
 
 #include "clangstaticanalyzertool.h"
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERRUNCONTROLFACTORY_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerrunner.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerrunner.h
index 92852d34c2..eb20359062 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerrunner.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERRUNNER_H
-#define CLANGSTATICANALYZERRUNNER_H
+#pragma once
 
 #include <QString>
 #include <QProcess>
@@ -82,5 +81,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERRUNNER_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzersettings.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzersettings.h
index 5f7d80a01f..1a2ff5286c 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzersettings.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzersettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERSETTINGS_H
-#define CLANGSTATICANALYZERSETTINGS_H
+#pragma once
 
 #include <QString>
 
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERSETTINGS_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzertool.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzertool.h
index 08580b3953..4e1f491693 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzertool.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzertool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERTOOL_H
-#define CLANGSTATICANALYZERTOOL_H
+#pragma once
 
 #include <debugger/analyzer/analyzermanager.h>
 #include <cpptools/projectinfo.h>
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERTOOL_H
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerunittests.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerunittests.h
index b49ef5b1d3..cc85fda603 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerunittests.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerunittests.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERUNITTESTS_H
-#define CLANGSTATICANALYZERUNITTESTS_H
+#pragma once
 
 #include <QObject>
 #include <QTemporaryDir>
@@ -55,6 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzerPlugin
-
-#endif // Include guard
-
diff --git a/src/plugins/clangstaticanalyzer/clangstaticanalyzerutils.h b/src/plugins/clangstaticanalyzer/clangstaticanalyzerutils.h
index 1531d050c6..a4137164de 100644
--- a/src/plugins/clangstaticanalyzer/clangstaticanalyzerutils.h
+++ b/src/plugins/clangstaticanalyzer/clangstaticanalyzerutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGSTATICANALYZERUTILS_H
-#define CLANGSTATICANALYZERUTILS_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -48,5 +47,3 @@ QString createFullLocationString(const Debugger::DiagnosticLocation &location);
 
 } // namespace Internal
 } // namespace ClangStaticAnalyzer
-
-#endif // CLANGSTATICANALYZERUTILS_H
diff --git a/src/plugins/clangstaticanalyzer/unit-tests/qt-widgets-app/mainwindow.h b/src/plugins/clangstaticanalyzer/unit-tests/qt-widgets-app/mainwindow.h
index ce76956bad..77673e9e57 100644
--- a/src/plugins/clangstaticanalyzer/unit-tests/qt-widgets-app/mainwindow.h
+++ b/src/plugins/clangstaticanalyzer/unit-tests/qt-widgets-app/mainwindow.h
@@ -1,5 +1,4 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
+#pragma once
 
 #include <QMainWindow>
 
@@ -20,5 +19,3 @@ public:
 private:
     Ui::MainWindow *ui;
 };
-
-#endif // MAINWINDOW_H
diff --git a/src/plugins/classview/classviewconstants.h b/src/plugins/classview/classviewconstants.h
index fdb575f70a..424305322c 100644
--- a/src/plugins/classview/classviewconstants.h
+++ b/src/plugins/classview/classviewconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWCONSTANTS_H
-#define CLASSVIEWCONSTANTS_H
+#pragma once
 
 namespace ClassView {
 namespace Constants {
@@ -40,5 +39,3 @@ enum ItemRole
 
 } // namespace Constants
 } // namespace ClassView
-
-#endif // CLASSVIEWCONSTANTS_H
diff --git a/src/plugins/classview/classviewmanager.h b/src/plugins/classview/classviewmanager.h
index 86b2d96c78..9a2f46524b 100644
--- a/src/plugins/classview/classviewmanager.h
+++ b/src/plugins/classview/classviewmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWMANAGER_H
-#define CLASSVIEWMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QSharedPointer>
@@ -106,5 +105,3 @@ private:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWMANAGER_H
diff --git a/src/plugins/classview/classviewnavigationwidget.h b/src/plugins/classview/classviewnavigationwidget.h
index e1fdae993b..55c15d02a5 100644
--- a/src/plugins/classview/classviewnavigationwidget.h
+++ b/src/plugins/classview/classviewnavigationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWNAVIGATIONWIDGET_H
-#define CLASSVIEWNAVIGATIONWIDGET_H
+#pragma once
 
 #include "classviewtreeitemmodel.h"
 
@@ -90,5 +89,3 @@ private:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWNAVIGATIONWIDGET_H
diff --git a/src/plugins/classview/classviewnavigationwidgetfactory.h b/src/plugins/classview/classviewnavigationwidgetfactory.h
index 5be9b61891..8675760c74 100644
--- a/src/plugins/classview/classviewnavigationwidgetfactory.h
+++ b/src/plugins/classview/classviewnavigationwidgetfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWNAVIGATIONWIDGETFACTORY_H
-#define CLASSVIEWNAVIGATIONWIDGETFACTORY_H
+#pragma once
 
 #include <coreplugin/inavigationwidgetfactory.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWNAVIGATIONWIDGETFACTORY_H
diff --git a/src/plugins/classview/classviewparser.h b/src/plugins/classview/classviewparser.h
index c230a3eca7..902ec8cb5a 100644
--- a/src/plugins/classview/classviewparser.h
+++ b/src/plugins/classview/classviewparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWPARSER_H
-#define CLASSVIEWPARSER_H
+#pragma once
 
 #include <QObject>
 
@@ -128,5 +127,3 @@ private:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWPARSER_H
diff --git a/src/plugins/classview/classviewparsertreeitem.h b/src/plugins/classview/classviewparsertreeitem.h
index e8cb82590c..60ca284cee 100644
--- a/src/plugins/classview/classviewparsertreeitem.h
+++ b/src/plugins/classview/classviewparsertreeitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWPARSERTREEITEM_H
-#define CLASSVIEWPARSERTREEITEM_H
+#pragma once
 
 #include "classviewsymbollocation.h"
 #include "classviewsymbolinformation.h"
@@ -99,5 +98,3 @@ private:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWPARSERTREEITEM_H
diff --git a/src/plugins/classview/classviewplugin.h b/src/plugins/classview/classviewplugin.h
index 663cce587f..223a963efc 100644
--- a/src/plugins/classview/classviewplugin.h
+++ b/src/plugins/classview/classviewplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWPLUGIN_H
-#define CLASSVIEWPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWPLUGIN_H
diff --git a/src/plugins/classview/classviewsymbolinformation.h b/src/plugins/classview/classviewsymbolinformation.h
index 7032a07d15..80d13a873b 100644
--- a/src/plugins/classview/classviewsymbolinformation.h
+++ b/src/plugins/classview/classviewsymbolinformation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWSYMBOLINFORMATION_H
-#define CLASSVIEWSYMBOLINFORMATION_H
+#pragma once
 
 #include <QMetaType>
 #include <QString>
@@ -73,5 +72,3 @@ inline uint qHash(const SymbolInformation &information)
 } // namespace ClassView
 
 Q_DECLARE_METATYPE(ClassView::Internal::SymbolInformation)
-
-#endif // CLASSVIEWSYMBOLINFORMATION_H
diff --git a/src/plugins/classview/classviewsymbollocation.h b/src/plugins/classview/classviewsymbollocation.h
index 5f4f5660f4..144c0227cd 100644
--- a/src/plugins/classview/classviewsymbollocation.h
+++ b/src/plugins/classview/classviewsymbollocation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWSYMBOLLOCATION_H
-#define CLASSVIEWSYMBOLLOCATION_H
+#pragma once
 
 #include <QMetaType>
 #include <QString>
@@ -68,5 +67,3 @@ inline uint qHash(const SymbolLocation &location)
 } // namespace ClassView
 
 Q_DECLARE_METATYPE(ClassView::Internal::SymbolLocation)
-
-#endif // CLASSVIEWSYMBOLLOCATION_H
diff --git a/src/plugins/classview/classviewtreeitemmodel.h b/src/plugins/classview/classviewtreeitemmodel.h
index e3171c8357..9864d179db 100644
--- a/src/plugins/classview/classviewtreeitemmodel.h
+++ b/src/plugins/classview/classviewtreeitemmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWTREEITEMMODEL_H
-#define CLASSVIEWTREEITEMMODEL_H
+#pragma once
 
 #include <QStandardItemModel>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWTREEMODEL_H
diff --git a/src/plugins/classview/classviewutils.h b/src/plugins/classview/classviewutils.h
index 4b7001f943..9a731e90e0 100644
--- a/src/plugins/classview/classviewutils.h
+++ b/src/plugins/classview/classviewutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWUTILS_H
-#define CLASSVIEWUTILS_H
+#pragma once
 
 #include "classviewsymbollocation.h"
 #include "classviewsymbolinformation.h"
@@ -61,5 +60,3 @@ public:
 
 } // namespace Internal
 } // namespace ClassView
-
-#endif // CLASSVIEWUTILS_H
diff --git a/src/plugins/cmakeprojectmanager/configmodel.h b/src/plugins/cmakeprojectmanager/configmodel.h
index d3a335dbe2..ea80eb7a07 100644
--- a/src/plugins/cmakeprojectmanager/configmodel.h
+++ b/src/plugins/cmakeprojectmanager/configmodel.h
@@ -83,4 +83,3 @@ private:
 };
 
 } // namespace CMakeProjectManager
-
diff --git a/src/plugins/coreplugin/actionmanager/actioncontainer.h b/src/plugins/coreplugin/actionmanager/actioncontainer.h
index 65b9748042..03d69c4841 100644
--- a/src/plugins/coreplugin/actionmanager/actioncontainer.h
+++ b/src/plugins/coreplugin/actionmanager/actioncontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ACTIONCONTAINER_H
-#define ACTIONCONTAINER_H
+#pragma once
 
 #include "coreplugin/core_global.h"
 #include "coreplugin/icontext.h"
@@ -75,5 +74,3 @@ public:
 };
 
 } // namespace Core
-
-#endif // ACTIONCONTAINER_H
diff --git a/src/plugins/coreplugin/actionmanager/actioncontainer_p.h b/src/plugins/coreplugin/actionmanager/actioncontainer_p.h
index 2350119ee7..048f0854a6 100644
--- a/src/plugins/coreplugin/actionmanager/actioncontainer_p.h
+++ b/src/plugins/coreplugin/actionmanager/actioncontainer_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ACTIONCONTAINER_P_H
-#define ACTIONCONTAINER_P_H
+#pragma once
 
 #include "actionmanager_p.h"
 
@@ -141,5 +140,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // ACTIONCONTAINER_P_H
diff --git a/src/plugins/coreplugin/actionmanager/actionmanager.h b/src/plugins/coreplugin/actionmanager/actionmanager.h
index 5add94044f..d1128b984b 100644
--- a/src/plugins/coreplugin/actionmanager/actionmanager.h
+++ b/src/plugins/coreplugin/actionmanager/actionmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ACTIONMANAGER_H
-#define ACTIONMANAGER_H
+#pragma once
 
 #include "coreplugin/core_global.h"
 #include "coreplugin/coreconstants.h"
@@ -89,5 +88,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // ACTIONMANAGER_H
diff --git a/src/plugins/coreplugin/actionmanager/actionmanager_p.h b/src/plugins/coreplugin/actionmanager/actionmanager_p.h
index fabfa7917e..0269fc4992 100644
--- a/src/plugins/coreplugin/actionmanager/actionmanager_p.h
+++ b/src/plugins/coreplugin/actionmanager/actionmanager_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ACTIONMANAGERPRIVATE_H
-#define ACTIONMANAGERPRIVATE_H
+#pragma once
 
 #include <coreplugin/actionmanager/command_p.h>
 #include <coreplugin/actionmanager/actioncontainer_p.h>
@@ -84,5 +83,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // ACTIONMANAGERPRIVATE_H
diff --git a/src/plugins/coreplugin/actionmanager/command.h b/src/plugins/coreplugin/actionmanager/command.h
index 4555abe898..1d9f9c940b 100644
--- a/src/plugins/coreplugin/actionmanager/command.h
+++ b/src/plugins/coreplugin/actionmanager/command.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMAND_H
-#define COMMAND_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <coreplugin/id.h>
@@ -97,5 +96,3 @@ signals:
 } // namespace Core
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::Command::CommandAttributes)
-
-#endif // COMMAND_H
diff --git a/src/plugins/coreplugin/actionmanager/command_p.h b/src/plugins/coreplugin/actionmanager/command_p.h
index eec5f814f2..eebb826aab 100644
--- a/src/plugins/coreplugin/actionmanager/command_p.h
+++ b/src/plugins/coreplugin/actionmanager/command_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMAND_P_H
-#define COMMAND_P_H
+#pragma once
 
 #include "command.h"
 
@@ -100,5 +99,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // COMMAND_P_H
diff --git a/src/plugins/coreplugin/actionmanager/commandbutton.h b/src/plugins/coreplugin/actionmanager/commandbutton.h
index 5828eb6563..deb7c1ed0c 100644
--- a/src/plugins/coreplugin/actionmanager/commandbutton.h
+++ b/src/plugins/coreplugin/actionmanager/commandbutton.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMANDBUTTON_H
-#define COMMANDBUTTON_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -56,5 +55,3 @@ private:
 };
 
 }
-
-#endif // COMMANDBUTTON_H
diff --git a/src/plugins/coreplugin/actionmanager/commandmappings.h b/src/plugins/coreplugin/actionmanager/commandmappings.h
index 7e9ea25f4d..89abe7efb0 100644
--- a/src/plugins/coreplugin/actionmanager/commandmappings.h
+++ b/src/plugins/coreplugin/actionmanager/commandmappings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMANDMAPPINGS_H
-#define COMMANDMAPPINGS_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -80,5 +79,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // COMMANDMAPPINGS_H
diff --git a/src/plugins/coreplugin/actionmanager/commandsfile.h b/src/plugins/coreplugin/actionmanager/commandsfile.h
index a7c2f2db6f..891856383f 100644
--- a/src/plugins/coreplugin/actionmanager/commandsfile.h
+++ b/src/plugins/coreplugin/actionmanager/commandsfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMANDSFILE_H
-#define COMMANDSFILE_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif //COMMANDSFILE_H
diff --git a/src/plugins/coreplugin/basefilewizard.h b/src/plugins/coreplugin/basefilewizard.h
index b00e7cc13c..860056a040 100644
--- a/src/plugins/coreplugin/basefilewizard.h
+++ b/src/plugins/coreplugin/basefilewizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEFILEWIZARD_H
-#define BASEFILEWIZARD_H
+#pragma once
 
 #include "core_global.h"
 
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // BASEFILEWIZARD_H
diff --git a/src/plugins/coreplugin/basefilewizardfactory.h b/src/plugins/coreplugin/basefilewizardfactory.h
index 3f9c95b840..0026a1d638 100644
--- a/src/plugins/coreplugin/basefilewizardfactory.h
+++ b/src/plugins/coreplugin/basefilewizardfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEFILEWIZARDFACTORY_H
-#define BASEFILEWIZARDFACTORY_H
+#pragma once
 
 #include "core_global.h"
 #include "generatedfile.h"
@@ -126,5 +125,3 @@ private:
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::GeneratedFile::Attributes)
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::WizardDialogParameters::DialogParameterFlags)
-
-#endif // BASEFILEWIZARDFACTORY_H
diff --git a/src/plugins/coreplugin/core_global.h b/src/plugins/coreplugin/core_global.h
index 4d2ac897e3..663b2e7e5c 100644
--- a/src/plugins/coreplugin/core_global.h
+++ b/src/plugins/coreplugin/core_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_GLOBAL_H
-#define CORE_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define CORE_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // CORE_GLOBAL_H
diff --git a/src/plugins/coreplugin/coreconstants.h b/src/plugins/coreplugin/coreconstants.h
index 77052130fd..dd4f11737f 100644
--- a/src/plugins/coreplugin/coreconstants.h
+++ b/src/plugins/coreplugin/coreconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORECONSTANTS_H
-#define CORECONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -210,5 +209,3 @@ const int TARGET_ICON_SIZE = 32;
 
 } // namespace Constants
 } // namespace Core
-
-#endif // CORECONSTANTS_H
diff --git a/src/plugins/coreplugin/coreicons.h b/src/plugins/coreplugin/coreicons.h
index cdf6a7d66a..b429060546 100644
--- a/src/plugins/coreplugin/coreicons.h
+++ b/src/plugins/coreplugin/coreicons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COREICONS_H
-#define COREICONS_H
+#pragma once
 
 #include "core_global.h"
 
@@ -99,5 +98,3 @@ CORE_EXPORT extern const Utils::Icon MODE_DESIGN_FLAT_ACTIVE;
 
 } // namespace Icons
 } // namespace Core
-
-#endif // COREICONS_H
diff --git a/src/plugins/coreplugin/corejsextensions.h b/src/plugins/coreplugin/corejsextensions.h
index a90584cc4f..861e10bd01 100644
--- a/src/plugins/coreplugin/corejsextensions.h
+++ b/src/plugins/coreplugin/corejsextensions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COREJSEXTENSIONS_H
-#define COREJSEXTENSIONS_H
+#pragma once
 
 #include <utils/stringutils.h>
 
@@ -73,5 +72,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // COREJSEXTENSIONS_H
diff --git a/src/plugins/coreplugin/coreplugin.h b/src/plugins/coreplugin/coreplugin.h
index 246b54c608..c6135ed85c 100644
--- a/src/plugins/coreplugin/coreplugin.h
+++ b/src/plugins/coreplugin/coreplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COREPLUGIN_H
-#define COREPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -90,5 +89,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // COREPLUGIN_H
diff --git a/src/plugins/coreplugin/designmode.h b/src/plugins/coreplugin/designmode.h
index 7c261f800a..fca1bf03f9 100644
--- a/src/plugins/coreplugin/designmode.h
+++ b/src/plugins/coreplugin/designmode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNMODE_H
-#define DESIGNMODE_H
+#pragma once
 
 #include <coreplugin/imode.h>
 
@@ -77,5 +76,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // DESIGNMODE_H
diff --git a/src/plugins/coreplugin/dialogs/addtovcsdialog.h b/src/plugins/coreplugin/dialogs/addtovcsdialog.h
index 588ba9c856..2aabc530c2 100644
--- a/src/plugins/coreplugin/dialogs/addtovcsdialog.h
+++ b/src/plugins/coreplugin/dialogs/addtovcsdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDTOVCSDIALOG_H
-#define ADDTOVCSDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -49,4 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-#endif // ADDTOVCSDIALOG_H
diff --git a/src/plugins/coreplugin/dialogs/externaltoolconfig.h b/src/plugins/coreplugin/dialogs/externaltoolconfig.h
index b7f395a653..e0f588b764 100644
--- a/src/plugins/coreplugin/dialogs/externaltoolconfig.h
+++ b/src/plugins/coreplugin/dialogs/externaltoolconfig.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTERNALTOOLCONFIG_H
-#define EXTERNALTOOLCONFIG_H
+#pragma once
 
 #include "coreplugin/externaltool.h"
 
@@ -125,6 +124,3 @@ private:
 
 } // Internal
 } // Core
-
-
-#endif // EXTERNALTOOLCONFIG_H
diff --git a/src/plugins/coreplugin/dialogs/ioptionspage.h b/src/plugins/coreplugin/dialogs/ioptionspage.h
index 20b7ef7686..c27cec3c3a 100644
--- a/src/plugins/coreplugin/dialogs/ioptionspage.h
+++ b/src/plugins/coreplugin/dialogs/ioptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOPTIONSPAGE_H
-#define IOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -107,5 +106,3 @@ protected:
 };
 
 } // namespace Core
-
-#endif // IOPTIONSPAGE_H
diff --git a/src/plugins/coreplugin/dialogs/newdialog.h b/src/plugins/coreplugin/dialogs/newdialog.h
index cd51db330b..13385b7f98 100644
--- a/src/plugins/coreplugin/dialogs/newdialog.h
+++ b/src/plugins/coreplugin/dialogs/newdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NEWDIALOG_H
-#define NEWDIALOG_H
+#pragma once
 
 #include "../iwizardfactory.h"
 
@@ -94,5 +93,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // NEWDIALOG_H
diff --git a/src/plugins/coreplugin/dialogs/openwithdialog.h b/src/plugins/coreplugin/dialogs/openwithdialog.h
index 4d1fd3f762..d93ea71d6d 100644
--- a/src/plugins/coreplugin/dialogs/openwithdialog.h
+++ b/src/plugins/coreplugin/dialogs/openwithdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENWITHDIALOG_H
-#define OPENWITHDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include "ui_openwithdialog.h"
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // OPENWITHDIALOG_H
diff --git a/src/plugins/coreplugin/dialogs/promptoverwritedialog.h b/src/plugins/coreplugin/dialogs/promptoverwritedialog.h
index f235d16660..38d93c6a8a 100644
--- a/src/plugins/coreplugin/dialogs/promptoverwritedialog.h
+++ b/src/plugins/coreplugin/dialogs/promptoverwritedialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROMPTOVERWRITEDIALOG_H
-#define PROMPTOVERWRITEDIALOG_H
+#pragma once
 
 #include "../core_global.h"
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // PROMPTOVERWRITEDIALOG_H
diff --git a/src/plugins/coreplugin/dialogs/readonlyfilesdialog.h b/src/plugins/coreplugin/dialogs/readonlyfilesdialog.h
index 25b5d3e517..b0498aaa8e 100644
--- a/src/plugins/coreplugin/dialogs/readonlyfilesdialog.h
+++ b/src/plugins/coreplugin/dialogs/readonlyfilesdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef READONLYFILESDIALOG_H
-#define READONLYFILESDIALOG_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -81,5 +80,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // READONLYFILESDIALOG_H
diff --git a/src/plugins/coreplugin/dialogs/saveitemsdialog.h b/src/plugins/coreplugin/dialogs/saveitemsdialog.h
index cd988eb05e..623cb2e85f 100644
--- a/src/plugins/coreplugin/dialogs/saveitemsdialog.h
+++ b/src/plugins/coreplugin/dialogs/saveitemsdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SAVEITEMSDIALOG_H
-#define SAVEITEMSDIALOG_H
+#pragma once
 
 #include <QList>
 #include <QDialog>
@@ -68,5 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SAVEITEMSDIALOG_H
diff --git a/src/plugins/coreplugin/dialogs/shortcutsettings.h b/src/plugins/coreplugin/dialogs/shortcutsettings.h
index 1383523860..4607d68419 100644
--- a/src/plugins/coreplugin/dialogs/shortcutsettings.h
+++ b/src/plugins/coreplugin/dialogs/shortcutsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SHORTCUTSETTINGS_H
-#define SHORTCUTSETTINGS_H
+#pragma once
 
 #include <coreplugin/actionmanager/commandmappings.h>
 #include <coreplugin/dialogs/ioptionspage.h>
@@ -131,5 +130,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SHORTCUTSETTINGS_H
diff --git a/src/plugins/coreplugin/documentmanager.h b/src/plugins/coreplugin/documentmanager.h
index f2eaf8fc26..bf8692f3cb 100644
--- a/src/plugins/coreplugin/documentmanager.h
+++ b/src/plugins/coreplugin/documentmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DOCUMENTMANAGER_H
-#define DOCUMENTMANAGER_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -184,5 +183,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_METATYPE(Core::DocumentManager::RecentFile)
-
-#endif // DOCUMENTMANAGER_H
diff --git a/src/plugins/coreplugin/editmode.h b/src/plugins/coreplugin/editmode.h
index a3f9abdde9..7fed4f361b 100644
--- a/src/plugins/coreplugin/editmode.h
+++ b/src/plugins/coreplugin/editmode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITMODE_H
-#define EDITMODE_H
+#pragma once
 
 #include <coreplugin/imode.h>
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // EDITMODE_H
diff --git a/src/plugins/coreplugin/editormanager/documentmodel.h b/src/plugins/coreplugin/editormanager/documentmodel.h
index b7029a65b9..5c9dab8ecf 100644
--- a/src/plugins/coreplugin/editormanager/documentmodel.h
+++ b/src/plugins/coreplugin/editormanager/documentmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DOCUMENTMODEL_H
-#define DOCUMENTMODEL_H
+#pragma once
 
 #include "../core_global.h"
 #include "../id.h"
@@ -96,5 +95,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_METATYPE(Core::DocumentModel::Entry *)
-
-#endif // DOCUMENTMODEL_H
diff --git a/src/plugins/coreplugin/editormanager/editorarea.h b/src/plugins/coreplugin/editormanager/editorarea.h
index 011f868808..2cbece9065 100644
--- a/src/plugins/coreplugin/editormanager/editorarea.h
+++ b/src/plugins/coreplugin/editormanager/editorarea.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORAREA_H
-#define EDITORAREA_H
+#pragma once
 
 #include "editorview.h"
 
@@ -62,5 +61,3 @@ private:
 
 } // Internal
 } // Core
-
-#endif // EDITORAREA_H
diff --git a/src/plugins/coreplugin/editormanager/editormanager.h b/src/plugins/coreplugin/editormanager/editormanager.h
index d543db4293..3d80e73e69 100644
--- a/src/plugins/coreplugin/editormanager/editormanager.h
+++ b/src/plugins/coreplugin/editormanager/editormanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORMANAGER_H
-#define EDITORMANAGER_H
+#pragma once
 
 #include "../core_global.h"
 #include "../idocument.h"
@@ -210,5 +209,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::EditorManager::OpenEditorFlags)
-
-#endif // EDITORMANAGER_H
diff --git a/src/plugins/coreplugin/editormanager/editormanager_p.h b/src/plugins/coreplugin/editormanager/editormanager_p.h
index 326a3a2e37..085a392cd8 100644
--- a/src/plugins/coreplugin/editormanager/editormanager_p.h
+++ b/src/plugins/coreplugin/editormanager/editormanager_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORMANAGER_P_H
-#define EDITORMANAGER_P_H
+#pragma once
 
 #include "documentmodel.h"
 #include "editorarea.h"
@@ -259,5 +258,3 @@ private:
 
 } // Internal
 } // Core
-
-#endif // EDITORMANAGER_P_H
diff --git a/src/plugins/coreplugin/editormanager/editorview.h b/src/plugins/coreplugin/editormanager/editorview.h
index 831b84c3b1..df0a62a9cb 100644
--- a/src/plugins/coreplugin/editormanager/editorview.h
+++ b/src/plugins/coreplugin/editormanager/editorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORVIEW_H
-#define EDITORVIEW_H
+#pragma once
 
 #include "coreplugin/id.h"
 
@@ -213,4 +212,3 @@ private:
 
 }
 }
-#endif // EDITORVIEW_H
diff --git a/src/plugins/coreplugin/editormanager/editorwindow.h b/src/plugins/coreplugin/editormanager/editorwindow.h
index bf02169199..2fc2f324dc 100644
--- a/src/plugins/coreplugin/editormanager/editorwindow.h
+++ b/src/plugins/coreplugin/editormanager/editorwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORWINDOW_H
-#define EDITORWINDOW_H
+#pragma once
 
 #include <QWidget>
 
@@ -50,5 +49,3 @@ private:
 
 } // Internal
 } // Core
-
-#endif // EDITORWINDOW_H
diff --git a/src/plugins/coreplugin/editormanager/ieditor.h b/src/plugins/coreplugin/editormanager/ieditor.h
index 033064e536..fccf619779 100644
--- a/src/plugins/coreplugin/editormanager/ieditor.h
+++ b/src/plugins/coreplugin/editormanager/ieditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IEDITOR_H
-#define IEDITOR_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <coreplugin/icontext.h>
@@ -67,5 +66,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_METATYPE(Core::IEditor*)
-
-#endif // IEDITOR_H
diff --git a/src/plugins/coreplugin/editormanager/ieditorfactory.h b/src/plugins/coreplugin/editormanager/ieditorfactory.h
index 1d50cdf26b..583001951c 100644
--- a/src/plugins/coreplugin/editormanager/ieditorfactory.h
+++ b/src/plugins/coreplugin/editormanager/ieditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IEDITORFACTORY_H
-#define IEDITORFACTORY_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <coreplugin/id.h>
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // IEDITORFACTORY_H
diff --git a/src/plugins/coreplugin/editormanager/iexternaleditor.h b/src/plugins/coreplugin/editormanager/iexternaleditor.h
index 0bc67774fa..24784b1e4a 100644
--- a/src/plugins/coreplugin/editormanager/iexternaleditor.h
+++ b/src/plugins/coreplugin/editormanager/iexternaleditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IEXTERNALEDITOR_H
-#define IEXTERNALEDITOR_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -48,5 +47,3 @@ public:
 };
 
 } // namespace Core
-
-#endif // IEXTERNALEDITOR_H
diff --git a/src/plugins/coreplugin/editormanager/openeditorsview.h b/src/plugins/coreplugin/editormanager/openeditorsview.h
index fcca6b6e42..758a479ede 100644
--- a/src/plugins/coreplugin/editormanager/openeditorsview.h
+++ b/src/plugins/coreplugin/editormanager/openeditorsview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENEDITORSVIEW_H
-#define OPENEDITORSVIEW_H
+#pragma once
 
 #include <coreplugin/inavigationwidgetfactory.h>
 #include <coreplugin/opendocumentstreeview.h>
@@ -94,6 +93,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-
-#endif // OPENEDITORSVIEW_H
diff --git a/src/plugins/coreplugin/editormanager/openeditorswindow.h b/src/plugins/coreplugin/editormanager/openeditorswindow.h
index 1a18159d56..e497411b77 100644
--- a/src/plugins/coreplugin/editormanager/openeditorswindow.h
+++ b/src/plugins/coreplugin/editormanager/openeditorswindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENEDITORSWINDOW_H
-#define OPENEDITORSWINDOW_H
+#pragma once
 
 #include "documentmodel.h"
 #include "editorview.h"
@@ -96,5 +95,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // OPENEDITORSWINDOW_H
diff --git a/src/plugins/coreplugin/editormanager/systemeditor.h b/src/plugins/coreplugin/editormanager/systemeditor.h
index 10a90d0f8c..1589dd21ce 100644
--- a/src/plugins/coreplugin/editormanager/systemeditor.h
+++ b/src/plugins/coreplugin/editormanager/systemeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYSTEMEDITOR_H
-#define SYSTEMEDITOR_H
+#pragma once
 
 #include "iexternaleditor.h"
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SYSTEMEDITOR_H
diff --git a/src/plugins/coreplugin/editortoolbar.h b/src/plugins/coreplugin/editortoolbar.h
index e395b4c392..13f50a0943 100644
--- a/src/plugins/coreplugin/editortoolbar.h
+++ b/src/plugins/coreplugin/editortoolbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORTOOLBAR_H
-#define EDITORTOOLBAR_H
+#pragma once
 
 #include "core_global.h"
 
@@ -114,5 +113,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // EDITORTOOLBAR_H
diff --git a/src/plugins/coreplugin/externaltool.h b/src/plugins/coreplugin/externaltool.h
index eafd198f42..2bd86bd9d9 100644
--- a/src/plugins/coreplugin/externaltool.h
+++ b/src/plugins/coreplugin/externaltool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTERNALTOOL_H
-#define EXTERNALTOOL_H
+#pragma once
 
 #include <utils/fileutils.h>
 #include <utils/environment.h>
@@ -159,5 +158,3 @@ private:
 } // Core
 
 Q_DECLARE_METATYPE(Core::Internal::ExternalTool *)
-
-#endif // EXTERNALTOOL_H
diff --git a/src/plugins/coreplugin/externaltoolmanager.h b/src/plugins/coreplugin/externaltoolmanager.h
index 142e823a39..6e1ca666ff 100644
--- a/src/plugins/coreplugin/externaltoolmanager.h
+++ b/src/plugins/coreplugin/externaltoolmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTERNALTOOLMANAGER_H
-#define EXTERNALTOOLMANAGER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -56,6 +55,3 @@ signals:
 };
 
 } // namespace Core
-
-
-#endif // EXTERNALTOOLMANAGER_H
diff --git a/src/plugins/coreplugin/fancyactionbar.h b/src/plugins/coreplugin/fancyactionbar.h
index 590694186b..90e1e33b81 100644
--- a/src/plugins/coreplugin/fancyactionbar.h
+++ b/src/plugins/coreplugin/fancyactionbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FANCYACTIONBAR_H
-#define FANCYACTIONBAR_H
+#pragma once
 
 #include <QToolButton>
 
@@ -78,5 +77,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // FANCYACTIONBAR_H
diff --git a/src/plugins/coreplugin/fancytabwidget.h b/src/plugins/coreplugin/fancytabwidget.h
index b871af08c6..e59d6189ea 100644
--- a/src/plugins/coreplugin/fancytabwidget.h
+++ b/src/plugins/coreplugin/fancytabwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FANCYTABWIDGET_H
-#define FANCYTABWIDGET_H
+#pragma once
 
 #include <QIcon>
 #include <QWidget>
@@ -180,5 +179,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // FANCYTABWIDGET_H
diff --git a/src/plugins/coreplugin/featureprovider.h b/src/plugins/coreplugin/featureprovider.h
index 24e8c93222..43c1a3a536 100644
--- a/src/plugins/coreplugin/featureprovider.h
+++ b/src/plugins/coreplugin/featureprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FEATUREPROVIDER_H
-#define FEATUREPROVIDER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -48,5 +47,3 @@ public:
 };
 
 } // namespace Core
-
-#endif // FEATUREPROVIDER_H
diff --git a/src/plugins/coreplugin/fileiconprovider.h b/src/plugins/coreplugin/fileiconprovider.h
index 2c1d629912..5262bd26bc 100644
--- a/src/plugins/coreplugin/fileiconprovider.h
+++ b/src/plugins/coreplugin/fileiconprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEICONPROVIDER_H
-#define FILEICONPROVIDER_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -51,5 +50,3 @@ CORE_EXPORT void registerIconOverlayForMimeType(const QIcon &icon, const char *m
 
 } // namespace FileIconProvider
 } // namespace Core
-
-#endif // FILEICONPROVIDER_H
diff --git a/src/plugins/coreplugin/fileutils.h b/src/plugins/coreplugin/fileutils.h
index 969deb848c..c82d93bb0e 100644
--- a/src/plugins/coreplugin/fileutils.h
+++ b/src/plugins/coreplugin/fileutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_FILEUTILS_H
-#define CORE_FILEUTILS_H
+#pragma once
 
 #include "coreplugin/core_global.h"
 
@@ -49,5 +48,3 @@ struct CORE_EXPORT FileUtils
 };
 
 } // namespace Core
-
-#endif // CORE_FILEUTILS_H
diff --git a/src/plugins/coreplugin/find/basetextfind.h b/src/plugins/coreplugin/find/basetextfind.h
index a0a3b52533..c320cc95bd 100644
--- a/src/plugins/coreplugin/find/basetextfind.h
+++ b/src/plugins/coreplugin/find/basetextfind.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASETEXTFIND_H
-#define BASETEXTFIND_H
+#pragma once
 
 #include "ifindsupport.h"
 
@@ -85,5 +84,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // BASETEXTFIND_H
diff --git a/src/plugins/coreplugin/find/currentdocumentfind.h b/src/plugins/coreplugin/find/currentdocumentfind.h
index 613eab7adc..a0d40d8706 100644
--- a/src/plugins/coreplugin/find/currentdocumentfind.h
+++ b/src/plugins/coreplugin/find/currentdocumentfind.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CURRENTDOCUMENTFIND_H
-#define CURRENTDOCUMENTFIND_H
+#pragma once
 
 #include "ifindsupport.h"
 
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // CURRENTDOCUMENTFIND_H
diff --git a/src/plugins/coreplugin/find/findplugin.h b/src/plugins/coreplugin/find/findplugin.h
index 67e15bd003..ecb33175e9 100644
--- a/src/plugins/coreplugin/find/findplugin.h
+++ b/src/plugins/coreplugin/find/findplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDPLUGIN_H
-#define FINDPLUGIN_H
+#pragma once
 
 #include "textfindconstants.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // FINDPLUGIN_H
diff --git a/src/plugins/coreplugin/find/findtoolbar.h b/src/plugins/coreplugin/find/findtoolbar.h
index 854eba481a..8407645a45 100644
--- a/src/plugins/coreplugin/find/findtoolbar.h
+++ b/src/plugins/coreplugin/find/findtoolbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDTOOLBAR_H
-#define FINDTOOLBAR_H
+#pragma once
 
 #include "ui_findwidget.h"
 #include "currentdocumentfind.h"
@@ -193,5 +192,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // FINDTOOLBAR_H
diff --git a/src/plugins/coreplugin/find/findtoolwindow.h b/src/plugins/coreplugin/find/findtoolwindow.h
index c51a301e5d..641c29d2e7 100644
--- a/src/plugins/coreplugin/find/findtoolwindow.h
+++ b/src/plugins/coreplugin/find/findtoolwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDTOOLWINDOW_H
-#define FINDTOOLWINDOW_H
+#pragma once
 
 #include "ui_finddialog.h"
 #include "findplugin.h"
@@ -78,5 +77,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // FINDTOOLWINDOW_H
diff --git a/src/plugins/coreplugin/find/highlightscrollbar.h b/src/plugins/coreplugin/find/highlightscrollbar.h
index f8ae3c1667..d049e9b49f 100644
--- a/src/plugins/coreplugin/find/highlightscrollbar.h
+++ b/src/plugins/coreplugin/find/highlightscrollbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTSCROLLBAR_H
-#define HIGHLIGHTSCROLLBAR_H
+#pragma once
 
 #include <QMap>
 #include <QScrollBar>
@@ -116,5 +115,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // HIGHLIGHTSCROLLBAR_H
diff --git a/src/plugins/coreplugin/find/ifindfilter.h b/src/plugins/coreplugin/find/ifindfilter.h
index bf1cd751be..14396f59d4 100644
--- a/src/plugins/coreplugin/find/ifindfilter.h
+++ b/src/plugins/coreplugin/find/ifindfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IFINDFILTER_H
-#define IFINDFILTER_H
+#pragma once
 
 #include "textfindconstants.h"
 
@@ -69,5 +68,3 @@ signals:
 };
 
 } // namespace Core
-
-#endif // IFINDFILTER_H
diff --git a/src/plugins/coreplugin/find/ifindsupport.h b/src/plugins/coreplugin/find/ifindsupport.h
index 4861b9aefa..18a2762784 100644
--- a/src/plugins/coreplugin/find/ifindsupport.h
+++ b/src/plugins/coreplugin/find/ifindsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IFINDSUPPORT_H
-#define IFINDSUPPORT_H
+#pragma once
 
 #include "textfindconstants.h"
 
@@ -72,5 +71,3 @@ signals:
 inline void IFindSupport::highlightAll(const QString &, FindFlags) {}
 
 } // namespace Core
-
-#endif // IFINDSUPPORT_H
diff --git a/src/plugins/coreplugin/find/itemviewfind.h b/src/plugins/coreplugin/find/itemviewfind.h
index c25e9029ea..dad9089dc5 100644
--- a/src/plugins/coreplugin/find/itemviewfind.h
+++ b/src/plugins/coreplugin/find/itemviewfind.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMVIEWFIND_H
-#define ITEMVIEWFIND_H
+#pragma once
 
 #include "ifindsupport.h"
 
@@ -81,5 +80,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // ITEMVIEWFIND_H
diff --git a/src/plugins/coreplugin/find/searchresultcolor.h b/src/plugins/coreplugin/find/searchresultcolor.h
index 67b88af269..51da45b9ca 100644
--- a/src/plugins/coreplugin/find/searchresultcolor.h
+++ b/src/plugins/coreplugin/find/searchresultcolor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTCOLOR_H
-#define SEARCHRESULTCOLOR_H
+#pragma once
 
 #include <QColor>
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SEARCHRESULTCOLOR_H
diff --git a/src/plugins/coreplugin/find/searchresulttreeitemdelegate.h b/src/plugins/coreplugin/find/searchresulttreeitemdelegate.h
index 8e4560c9bd..99e05c2248 100644
--- a/src/plugins/coreplugin/find/searchresulttreeitemdelegate.h
+++ b/src/plugins/coreplugin/find/searchresulttreeitemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTTREEITEMDELEGATE_H
-#define SEARCHRESULTTREEITEMDELEGATE_H
+#pragma once
 
 #include <QItemDelegate>
 
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SEARCHRESULTTREEITEMDELEGATE_H
diff --git a/src/plugins/coreplugin/find/searchresulttreeitemroles.h b/src/plugins/coreplugin/find/searchresulttreeitemroles.h
index aa504983d3..4563e316b1 100644
--- a/src/plugins/coreplugin/find/searchresulttreeitemroles.h
+++ b/src/plugins/coreplugin/find/searchresulttreeitemroles.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTTREEITEMROLES_H
-#define SEARCHRESULTTREEITEMROLES_H
+#pragma once
 
 #include <QAbstractItemView>
 
@@ -48,5 +47,3 @@ enum Roles
 } // namespace Internal
 } // namespace Core
 } // namespace ItemDataRoles
-
-#endif // SEARCHRESULTTREEITEMROLES_H
diff --git a/src/plugins/coreplugin/find/searchresulttreeitems.h b/src/plugins/coreplugin/find/searchresulttreeitems.h
index 81fee12b86..1709bc11d0 100644
--- a/src/plugins/coreplugin/find/searchresulttreeitems.h
+++ b/src/plugins/coreplugin/find/searchresulttreeitems.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTTREEITEMS_H
-#define SEARCHRESULTTREEITEMS_H
+#pragma once
 
 #include "searchresultwindow.h"
 
@@ -70,5 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SEARCHRESULTTREEITEMS_H
diff --git a/src/plugins/coreplugin/find/searchresulttreemodel.h b/src/plugins/coreplugin/find/searchresulttreemodel.h
index bbc69b078f..08237db837 100644
--- a/src/plugins/coreplugin/find/searchresulttreemodel.h
+++ b/src/plugins/coreplugin/find/searchresulttreemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTTREEMODEL_H
-#define SEARCHRESULTTREEMODEL_H
+#pragma once
 
 #include "searchresultwindow.h"
 #include "searchresultcolor.h"
@@ -91,5 +90,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SEARCHRESULTTREEMODEL_H
diff --git a/src/plugins/coreplugin/find/searchresulttreeview.h b/src/plugins/coreplugin/find/searchresulttreeview.h
index c8d6d15aca..bf80cba1ad 100644
--- a/src/plugins/coreplugin/find/searchresulttreeview.h
+++ b/src/plugins/coreplugin/find/searchresulttreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTTREEVIEW_H
-#define SEARCHRESULTTREEVIEW_H
+#pragma once
 
 #include "searchresultwindow.h"
 
@@ -64,5 +63,3 @@ protected:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SEARCHRESULTTREEVIEW_H
diff --git a/src/plugins/coreplugin/find/searchresultwidget.h b/src/plugins/coreplugin/find/searchresultwidget.h
index 2a671b1dee..ef9961f3d8 100644
--- a/src/plugins/coreplugin/find/searchresultwidget.h
+++ b/src/plugins/coreplugin/find/searchresultwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTWIDGET_H
-#define SEARCHRESULTWIDGET_H
+#pragma once
 
 #include "searchresultwindow.h"
 
@@ -142,5 +141,3 @@ private:
 
 } // Internal
 } // Find
-
-#endif // SEARCHRESULTWIDGET_H
diff --git a/src/plugins/coreplugin/find/searchresultwindow.h b/src/plugins/coreplugin/find/searchresultwindow.h
index 25985bcde6..8a7e1b918f 100644
--- a/src/plugins/coreplugin/find/searchresultwindow.h
+++ b/src/plugins/coreplugin/find/searchresultwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHRESULTWINDOW_H
-#define SEARCHRESULTWINDOW_H
+#pragma once
 
 #include <coreplugin/ioutputpane.h>
 
@@ -194,5 +193,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_METATYPE(Core::SearchResultItem)
-
-#endif // SEARCHRESULTWINDOW_H
diff --git a/src/plugins/coreplugin/find/textfindconstants.h b/src/plugins/coreplugin/find/textfindconstants.h
index 22eed71a78..d670abd0f0 100644
--- a/src/plugins/coreplugin/find/textfindconstants.h
+++ b/src/plugins/coreplugin/find/textfindconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTFINDCONSTANTS_H
-#define TEXTFINDCONSTANTS_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -78,5 +77,3 @@ QTextDocument::FindFlags CORE_EXPORT textDocumentFlagsForFindFlags(FindFlags fla
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::FindFlags)
 Q_DECLARE_METATYPE(Core::FindFlags)
-
-#endif // TEXTFINDCONSTANTS_H
diff --git a/src/plugins/coreplugin/findplaceholder.h b/src/plugins/coreplugin/findplaceholder.h
index 90afde4b02..4073354dc1 100644
--- a/src/plugins/coreplugin/findplaceholder.h
+++ b/src/plugins/coreplugin/findplaceholder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDPLACEHOLDER_H
-#define FINDPLACEHOLDER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // FINDPLACEHOLDER_H
diff --git a/src/plugins/coreplugin/generalsettings.h b/src/plugins/coreplugin/generalsettings.h
index 5fbcaab636..584048bf72 100644
--- a/src/plugins/coreplugin/generalsettings.h
+++ b/src/plugins/coreplugin/generalsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERALSETTINGS_H
-#define GENERALSETTINGS_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <QPointer>
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // GENERALSETTINGS_H
diff --git a/src/plugins/coreplugin/generatedfile.h b/src/plugins/coreplugin/generatedfile.h
index de0b8b5e26..9fb2815837 100644
--- a/src/plugins/coreplugin/generatedfile.h
+++ b/src/plugins/coreplugin/generatedfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_GENERATEDFILE_H
-#define CORE_GENERATEDFILE_H
+#pragma once
 
 #include "coreplugin/id.h"
 
@@ -88,5 +87,3 @@ private:
 typedef QList<GeneratedFile> GeneratedFiles;
 
 } // namespace Core
-
-#endif // CORE_GENERATEDFILE_H
diff --git a/src/plugins/coreplugin/helpmanager.h b/src/plugins/coreplugin/helpmanager.h
index 3d2bc7be80..07b22cbe9e 100644
--- a/src/plugins/coreplugin/helpmanager.h
+++ b/src/plugins/coreplugin/helpmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPMANAGER_H
-#define HELPMANAGER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -109,5 +108,3 @@ private:
 };
 
 }   // Core
-
-#endif  // HELPMANAGER_H
diff --git a/src/plugins/coreplugin/icontext.h b/src/plugins/coreplugin/icontext.h
index 35deb2c6ea..b2153656a7 100644
--- a/src/plugins/coreplugin/icontext.h
+++ b/src/plugins/coreplugin/icontext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ICONTEXT_H
-#define ICONTEXT_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <coreplugin/id.h>
@@ -85,5 +84,3 @@ protected:
 };
 
 } // namespace Core
-
-#endif //ICONTEXT_H
diff --git a/src/plugins/coreplugin/icore.h b/src/plugins/coreplugin/icore.h
index 6dd3561713..5bba154fd0 100644
--- a/src/plugins/coreplugin/icore.h
+++ b/src/plugins/coreplugin/icore.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ICORE_H
-#define ICORE_H
+#pragma once
 
 #include "core_global.h"
 #include "id.h"
@@ -156,5 +155,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // ICORE_H
diff --git a/src/plugins/coreplugin/id.h b/src/plugins/coreplugin/id.h
index 1450592cf9..af56c32b10 100644
--- a/src/plugins/coreplugin/id.h
+++ b/src/plugins/coreplugin/id.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_ID_H
-#define CORE_ID_H
+#pragma once
 
 #include "core_global.h"
 
@@ -92,5 +91,3 @@ QDataStream &operator<<(QDataStream &ds, Core::Id id);
 QDataStream &operator>>(QDataStream &ds, Core::Id &id);
 CORE_EXPORT QDebug operator<<(QDebug dbg, const Core::Id &id);
 QT_END_NAMESPACE
-
-#endif // CORE_ID_H
diff --git a/src/plugins/coreplugin/idocument.h b/src/plugins/coreplugin/idocument.h
index 72a3dd4333..40cd861fa5 100644
--- a/src/plugins/coreplugin/idocument.h
+++ b/src/plugins/coreplugin/idocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IDOCUMENT_H
-#define IDOCUMENT_H
+#pragma once
 
 #include "core_global.h"
 
@@ -148,5 +147,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // IDOCUMENT_H
diff --git a/src/plugins/coreplugin/idocumentfactory.h b/src/plugins/coreplugin/idocumentfactory.h
index 6b507107d0..518cb23f1f 100644
--- a/src/plugins/coreplugin/idocumentfactory.h
+++ b/src/plugins/coreplugin/idocumentfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IDOCUMENTFACTORY_H
-#define IDOCUMENTFACTORY_H
+#pragma once
 
 #include "id.h"
 
@@ -62,5 +61,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // IDOCUMENTFACTORY_H
diff --git a/src/plugins/coreplugin/ifilewizardextension.h b/src/plugins/coreplugin/ifilewizardextension.h
index 79679b7265..2e788eb8c7 100644
--- a/src/plugins/coreplugin/ifilewizardextension.h
+++ b/src/plugins/coreplugin/ifilewizardextension.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IFILEWIZARDEXTENSION_H
-#define IFILEWIZARDEXTENSION_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -72,5 +71,3 @@ public slots:
 };
 
 } // namespace Core
-
-#endif // IFILEWIZARDEXTENSION_H
diff --git a/src/plugins/coreplugin/imode.h b/src/plugins/coreplugin/imode.h
index 8cd9d558d8..cf745b4516 100644
--- a/src/plugins/coreplugin/imode.h
+++ b/src/plugins/coreplugin/imode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMODE_H
-#define IMODE_H
+#pragma once
 
 #include "icontext.h"
 #include "id.h"
@@ -65,5 +64,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // IMODE_H
diff --git a/src/plugins/coreplugin/inavigationwidgetfactory.h b/src/plugins/coreplugin/inavigationwidgetfactory.h
index 245c084a68..940e0543b2 100644
--- a/src/plugins/coreplugin/inavigationwidgetfactory.h
+++ b/src/plugins/coreplugin/inavigationwidgetfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INAVIGATIONWIDGET_H
-#define INAVIGATIONWIDGET_H
+#pragma once
 
 #include "id.h"
 
@@ -81,5 +80,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // INAVIGATIONWIDGET_H
diff --git a/src/plugins/coreplugin/infobar.h b/src/plugins/coreplugin/infobar.h
index e096e0e9db..8c2cc7f211 100644
--- a/src/plugins/coreplugin/infobar.h
+++ b/src/plugins/coreplugin/infobar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INFOBAR_H
-#define INFOBAR_H
+#pragma once
 
 #include "core_global.h"
 #include <coreplugin/id.h>
@@ -120,5 +119,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // INFOBAR_H
diff --git a/src/plugins/coreplugin/ioutputpane.h b/src/plugins/coreplugin/ioutputpane.h
index e952d5136f..55d266b406 100644
--- a/src/plugins/coreplugin/ioutputpane.h
+++ b/src/plugins/coreplugin/ioutputpane.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOUTPUTPANE_H
-#define IOUTPUTPANE_H
+#pragma once
 
 #include "core_global.h"
 
@@ -88,5 +87,3 @@ signals:
 } // namespace Core
 
  Q_DECLARE_OPERATORS_FOR_FLAGS(Core::IOutputPane::Flags)
-
-#endif // IOUTPUTPANE_H
diff --git a/src/plugins/coreplugin/iversioncontrol.h b/src/plugins/coreplugin/iversioncontrol.h
index daaa860153..a78775bae3 100644
--- a/src/plugins/coreplugin/iversioncontrol.h
+++ b/src/plugins/coreplugin/iversioncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IVERSIONCONTROL_H
-#define IVERSIONCONTROL_H
+#pragma once
 
 #include "core_global.h"
 #include "id.h"
@@ -264,6 +263,3 @@ private:
 
 } // namespace Core
 #endif
-
-
-#endif // IVERSIONCONTROL_H
diff --git a/src/plugins/coreplugin/iwelcomepage.h b/src/plugins/coreplugin/iwelcomepage.h
index 465130e6a4..521af86f6a 100644
--- a/src/plugins/coreplugin/iwelcomepage.h
+++ b/src/plugins/coreplugin/iwelcomepage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IWELCOMEPAGE_H
-#define IWELCOMEPAGE_H
+#pragma once
 
 #include "core_global.h"
 
@@ -59,5 +58,3 @@ public:
 };
 
 } // Core
-
-#endif // IWELCOMEPAGE_H
diff --git a/src/plugins/coreplugin/iwizardfactory.h b/src/plugins/coreplugin/iwizardfactory.h
index 2adb5be81b..7cf3cbcf8c 100644
--- a/src/plugins/coreplugin/iwizardfactory.h
+++ b/src/plugins/coreplugin/iwizardfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IWIZARDFACTORY_H
-#define IWIZARDFACTORY_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <coreplugin/featureprovider.h>
@@ -139,5 +138,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::IWizardFactory::WizardFlags)
-
-#endif // IWIZARDFACTORY_H
diff --git a/src/plugins/coreplugin/jsexpander.h b/src/plugins/coreplugin/jsexpander.h
index f736cab651..dbffc8c159 100644
--- a/src/plugins/coreplugin/jsexpander.h
+++ b/src/plugins/coreplugin/jsexpander.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSEXPANDER_H
-#define JSEXPANDER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // JSEXPANDER_H
diff --git a/src/plugins/coreplugin/locator/basefilefilter.h b/src/plugins/coreplugin/locator/basefilefilter.h
index b472aadce4..16cfc45c71 100644
--- a/src/plugins/coreplugin/locator/basefilefilter.h
+++ b/src/plugins/coreplugin/locator/basefilefilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEFILEFILTER_H
-#define BASEFILEFILTER_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -85,5 +84,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // BASEFILEFILTER_H
diff --git a/src/plugins/coreplugin/locator/commandlocator.h b/src/plugins/coreplugin/locator/commandlocator.h
index bf18b6aee0..f9704fa43b 100644
--- a/src/plugins/coreplugin/locator/commandlocator.h
+++ b/src/plugins/coreplugin/locator/commandlocator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMANDLOCATOR_H
-#define COMMANDLOCATOR_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // COMMANDLOCATOR_H
diff --git a/src/plugins/coreplugin/locator/directoryfilter.h b/src/plugins/coreplugin/locator/directoryfilter.h
index ae9dfdb3fd..e0c5d0c379 100644
--- a/src/plugins/coreplugin/locator/directoryfilter.h
+++ b/src/plugins/coreplugin/locator/directoryfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIRECTORYFILTER_H
-#define DIRECTORYFILTER_H
+#pragma once
 
 #include "ui_directoryfilter.h"
 #include "basefilefilter.h"
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // DIRECTORYFILTER_H
diff --git a/src/plugins/coreplugin/locator/executefilter.h b/src/plugins/coreplugin/locator/executefilter.h
index 988bb9b44c..890468354e 100644
--- a/src/plugins/coreplugin/locator/executefilter.h
+++ b/src/plugins/coreplugin/locator/executefilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXECUTEFILTER_H
-#define EXECUTEFILTER_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // EXECUTEFILTER_H
diff --git a/src/plugins/coreplugin/locator/externaltoolsfilter.h b/src/plugins/coreplugin/locator/externaltoolsfilter.h
index 13b9a6e706..86ebf5f851 100644
--- a/src/plugins/coreplugin/locator/externaltoolsfilter.h
+++ b/src/plugins/coreplugin/locator/externaltoolsfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTERNALTOOLSFILTER_H
-#define EXTERNALTOOLSFILTER_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // EXTERNALTOOLSFILTER_H
diff --git a/src/plugins/coreplugin/locator/filesystemfilter.h b/src/plugins/coreplugin/locator/filesystemfilter.h
index daa4c5c1ca..e7b7bdbc5a 100644
--- a/src/plugins/coreplugin/locator/filesystemfilter.h
+++ b/src/plugins/coreplugin/locator/filesystemfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILESYSTEMFILTER_H
-#define FILESYSTEMFILTER_H
+#pragma once
 
 #include "ilocatorfilter.h"
 #include "ui_filesystemfilter.h"
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // FILESYSTEMFILTER_H
diff --git a/src/plugins/coreplugin/locator/ilocatorfilter.h b/src/plugins/coreplugin/locator/ilocatorfilter.h
index e9051712cf..d2d083d8cb 100644
--- a/src/plugins/coreplugin/locator/ilocatorfilter.h
+++ b/src/plugins/coreplugin/locator/ilocatorfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ILOCATORFILTER_H
-#define ILOCATORFILTER_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -171,5 +170,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // ILOCATORFILTER_H
diff --git a/src/plugins/coreplugin/locator/locator.h b/src/plugins/coreplugin/locator/locator.h
index c47dd2dc13..62b6d2b896 100644
--- a/src/plugins/coreplugin/locator/locator.h
+++ b/src/plugins/coreplugin/locator/locator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORPLUGIN_H
-#define LOCATORPLUGIN_H
+#pragma once
 
 #include "ilocatorfilter.h"
 #include "directoryfilter.h"
@@ -125,5 +124,3 @@ void Locator::loadSettingsHelper(S *settings)
 
 } // namespace Internal
 } // namespace Core
-
-#endif // LOCATORPLUGIN_H
diff --git a/src/plugins/coreplugin/locator/locatorconstants.h b/src/plugins/coreplugin/locator/locatorconstants.h
index 68c0bc7860..35faa771ce 100644
--- a/src/plugins/coreplugin/locator/locatorconstants.h
+++ b/src/plugins/coreplugin/locator/locatorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORCONSTANTS_H
-#define LOCATORCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -38,5 +37,3 @@ const char TASK_INDEX[] = "Locator.Task.Index";
 
 } // namespace Constants
 } // namespace Core
-
-#endif // LOCATORCONSTANTS_H
diff --git a/src/plugins/coreplugin/locator/locatorfiltersfilter.h b/src/plugins/coreplugin/locator/locatorfiltersfilter.h
index a6c77f3644..b0e8a1ba0a 100644
--- a/src/plugins/coreplugin/locator/locatorfiltersfilter.h
+++ b/src/plugins/coreplugin/locator/locatorfiltersfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORFILTERSFILTER_H
-#define LOCATORFILTERSFILTER_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // LOCATORFILTERSFILTER_H
diff --git a/src/plugins/coreplugin/locator/locatorfiltertest.h b/src/plugins/coreplugin/locator/locatorfiltertest.h
index e40df74332..c41d5ba23e 100644
--- a/src/plugins/coreplugin/locator/locatorfiltertest.h
+++ b/src/plugins/coreplugin/locator/locatorfiltertest.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORFILTERTEST_H
-#define LOCATORFILTERTEST_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -86,5 +85,3 @@ template<> inline char *toString(const Core::Tests::ResultData &data)
 
 } // namespace QTest
 QT_END_NAMESPACE
-
-#endif // LOCATORFILTERTEST_H
diff --git a/src/plugins/coreplugin/locator/locatormanager.h b/src/plugins/coreplugin/locator/locatormanager.h
index 1946065ba9..f9edb89f90 100644
--- a/src/plugins/coreplugin/locator/locatormanager.h
+++ b/src/plugins/coreplugin/locator/locatormanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORMANAGER_H
-#define LOCATORMANAGER_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace Core
-
-#endif // LOCATORMANAGER_H
diff --git a/src/plugins/coreplugin/locator/locatorsearchutils.h b/src/plugins/coreplugin/locator/locatorsearchutils.h
index 47bfdd4b69..cd2582f509 100644
--- a/src/plugins/coreplugin/locator/locatorsearchutils.h
+++ b/src/plugins/coreplugin/locator/locatorsearchutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORSEARCHUTILS_H
-#define LOCATORSEARCHUTILS_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -37,6 +36,3 @@ void CORE_EXPORT runSearch(QFutureInterface<LocatorFilterEntry> &future,
 
 } // namespace Internal
 } // namespace Core
-
-#endif // LOCATORSEARCHUTILS_H
-
diff --git a/src/plugins/coreplugin/locator/locatorsettingspage.h b/src/plugins/coreplugin/locator/locatorsettingspage.h
index e1648d9ad7..47cde6d5ad 100644
--- a/src/plugins/coreplugin/locator/locatorsettingspage.h
+++ b/src/plugins/coreplugin/locator/locatorsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORSETTINGSPAGE_H
-#define LOCATORSETTINGSPAGE_H
+#pragma once
 
 #include "ui_locatorsettingspage.h"
 
@@ -91,5 +90,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // LOCATORSETTINGSPAGE_H
diff --git a/src/plugins/coreplugin/locator/locatorwidget.h b/src/plugins/coreplugin/locator/locatorwidget.h
index 0ff07166c2..876492fa06 100644
--- a/src/plugins/coreplugin/locator/locatorwidget.h
+++ b/src/plugins/coreplugin/locator/locatorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCATORWIDGET_H
-#define LOCATORWIDGET_H
+#pragma once
 
 #include "locator.h"
 
@@ -100,5 +99,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // LOCATORWIDGET_H
diff --git a/src/plugins/coreplugin/locator/opendocumentsfilter.h b/src/plugins/coreplugin/locator/opendocumentsfilter.h
index a4a9e49cbf..d676618331 100644
--- a/src/plugins/coreplugin/locator/opendocumentsfilter.h
+++ b/src/plugins/coreplugin/locator/opendocumentsfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENDOCUMENTSFILTER_H
-#define OPENDOCUMENTSFILTER_H
+#pragma once
 
 #include "ilocatorfilter.h"
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // OPENDOCUMENTSFILTER_H
diff --git a/src/plugins/coreplugin/locator/spotlightlocatorfilter.h b/src/plugins/coreplugin/locator/spotlightlocatorfilter.h
index 6469ce24c0..0ce8c89230 100644
--- a/src/plugins/coreplugin/locator/spotlightlocatorfilter.h
+++ b/src/plugins/coreplugin/locator/spotlightlocatorfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SPOTLIGHTLOCATORFILTER_H
-#define SPOTLIGHTLOCATORFILTER_H
+#pragma once
 
 #include "basefilefilter.h"
 
@@ -42,6 +41,3 @@ public:
 
 } // Internal
 } // Core
-
-#endif // SPOTLIGHTLOCATORFILTER_H
-
diff --git a/src/plugins/coreplugin/mainwindow.h b/src/plugins/coreplugin/mainwindow.h
index 0f1125f2f4..b2e374662d 100644
--- a/src/plugins/coreplugin/mainwindow.h
+++ b/src/plugins/coreplugin/mainwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
+#pragma once
 
 #include "icontext.h"
 #include "icore.h"
@@ -204,5 +203,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // MAINWINDOW_H
diff --git a/src/plugins/coreplugin/manhattanstyle.h b/src/plugins/coreplugin/manhattanstyle.h
index 2bdaabffc8..752aa08369 100644
--- a/src/plugins/coreplugin/manhattanstyle.h
+++ b/src/plugins/coreplugin/manhattanstyle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MANHATTANSTYLE_H
-#define MANHATTANSTYLE_H
+#pragma once
 
 #include "core_global.h"
 
@@ -72,5 +71,3 @@ private:
 
     ManhattanStylePrivate *d;
 };
-
-#endif // MANHATTANSTYLE_H
diff --git a/src/plugins/coreplugin/messagebox.h b/src/plugins/coreplugin/messagebox.h
index 3ced8ea3a5..b679636d1f 100644
--- a/src/plugins/coreplugin/messagebox.h
+++ b/src/plugins/coreplugin/messagebox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MESSAGEBOX_H
-#define MESSAGEBOX_H
+#pragma once
 
 #include "core_global.h"
 
@@ -40,6 +39,3 @@ namespace AsynchronousMessageBox {
     CORE_EXPORT void critical(const QString &title, const QString &desciption);
 }
 }
-
-#endif // MESSAGEBOX_H
-
diff --git a/src/plugins/coreplugin/messagemanager.h b/src/plugins/coreplugin/messagemanager.h
index 4ccdaae977..39daa4d138 100644
--- a/src/plugins/coreplugin/messagemanager.h
+++ b/src/plugins/coreplugin/messagemanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MESSAGEMANAGER_H
-#define MESSAGEMANAGER_H
+#pragma once
 
 #include "core_global.h"
 #include "ioutputpane.h"
@@ -71,5 +70,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_METATYPE(Core::MessageManager::PrintToOutputPaneFlags)
-
-#endif // MESSAGEMANAGER_H
diff --git a/src/plugins/coreplugin/messageoutputwindow.h b/src/plugins/coreplugin/messageoutputwindow.h
index b926e028a2..bb301f0f0e 100644
--- a/src/plugins/coreplugin/messageoutputwindow.h
+++ b/src/plugins/coreplugin/messageoutputwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MESSAGEOUTPUTWINDOW_H
-#define MESSAGEOUTPUTWINDOW_H
+#pragma once
 
 #include "ioutputpane.h"
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // MESSAGEOUTPUTWINDOW_H
diff --git a/src/plugins/coreplugin/mimetypemagicdialog.h b/src/plugins/coreplugin/mimetypemagicdialog.h
index ffba915ec0..5f5bf8bfe6 100644
--- a/src/plugins/coreplugin/mimetypemagicdialog.h
+++ b/src/plugins/coreplugin/mimetypemagicdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMETYPEMAGICDIALOG_H
-#define MIMETYPEMAGICDIALOG_H
+#pragma once
 
 #include "ui_mimetypemagicdialog.h"
 
@@ -82,5 +81,3 @@ private:
 } // Core
 
 Q_DECLARE_METATYPE(Core::Internal::MagicData)
-
-#endif // MIMETYPEMAGICDIALOG_H
diff --git a/src/plugins/coreplugin/mimetypesettings.h b/src/plugins/coreplugin/mimetypesettings.h
index fe4a075c2e..8153ecbb1b 100644
--- a/src/plugins/coreplugin/mimetypesettings.h
+++ b/src/plugins/coreplugin/mimetypesettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MIMETYPESETTINGSPAGE_H
-#define MIMETYPESETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // Internal
 } // Core
-
-#endif // MIMETYPESETTINGSPAGE_H
diff --git a/src/plugins/coreplugin/minisplitter.h b/src/plugins/coreplugin/minisplitter.h
index fd571b09fa..8679a8e836 100644
--- a/src/plugins/coreplugin/minisplitter.h
+++ b/src/plugins/coreplugin/minisplitter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MINISPLITTER_H
-#define MINISPLITTER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // MINISPLITTER_H
diff --git a/src/plugins/coreplugin/modemanager.h b/src/plugins/coreplugin/modemanager.h
index 0f73a12b79..324684bdd7 100644
--- a/src/plugins/coreplugin/modemanager.h
+++ b/src/plugins/coreplugin/modemanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODEMANAGER_H
-#define MODEMANAGER_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <QObject>
@@ -86,5 +85,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // MODEMANAGER_H
diff --git a/src/plugins/coreplugin/navigationsubwidget.h b/src/plugins/coreplugin/navigationsubwidget.h
index 2b945df780..545b0113d3 100644
--- a/src/plugins/coreplugin/navigationsubwidget.h
+++ b/src/plugins/coreplugin/navigationsubwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATIONSUBWIDGET_H
-#define NAVIGATIONSUBWIDGET_H
+#pragma once
 
 #include <QComboBox>
 
@@ -122,5 +121,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // NAVIGATIONSUBWIDGET_H
diff --git a/src/plugins/coreplugin/navigationwidget.h b/src/plugins/coreplugin/navigationwidget.h
index 444d2365d8..a1909b120c 100644
--- a/src/plugins/coreplugin/navigationwidget.h
+++ b/src/plugins/coreplugin/navigationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATIONWIDGET_H
-#define NAVIGATIONWIDGET_H
+#pragma once
 
 #include <coreplugin/minisplitter.h>
 #include <coreplugin/id.h>
@@ -115,5 +114,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // NAVIGATIONWIDGET_H
diff --git a/src/plugins/coreplugin/opendocumentstreeview.h b/src/plugins/coreplugin/opendocumentstreeview.h
index 05d10174e8..50286b63d4 100644
--- a/src/plugins/coreplugin/opendocumentstreeview.h
+++ b/src/plugins/coreplugin/opendocumentstreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENDOCUMENTSTREEVIEW_H
-#define OPENDOCUMENTSTREEVIEW_H
+#pragma once
 
 #include "core_global.h"
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // OPENDOCUMENTSTREEVIEW_H
diff --git a/src/plugins/coreplugin/outputpane.h b/src/plugins/coreplugin/outputpane.h
index 6486cc999f..1b75131093 100644
--- a/src/plugins/coreplugin/outputpane.h
+++ b/src/plugins/coreplugin/outputpane.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTPUTPANE_H
-#define OUTPUTPANE_H
+#pragma once
 
 #include "core_global.h"
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // OUTPUTPANE_H
diff --git a/src/plugins/coreplugin/outputpanemanager.h b/src/plugins/coreplugin/outputpanemanager.h
index 304774856d..b8885dd21d 100644
--- a/src/plugins/coreplugin/outputpanemanager.h
+++ b/src/plugins/coreplugin/outputpanemanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTPUTPANEMANAGER_H
-#define OUTPUTPANEMANAGER_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -182,5 +181,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // OUTPUTPANEMANAGER_H
diff --git a/src/plugins/coreplugin/outputwindow.h b/src/plugins/coreplugin/outputwindow.h
index 862ead16bf..eee83dd63a 100644
--- a/src/plugins/coreplugin/outputwindow.h
+++ b/src/plugins/coreplugin/outputwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTPUTWINDOW_H
-#define OUTPUTWINDOW_H
+#pragma once
 
 #include "core_global.h"
 #include "icontext.h"
@@ -98,5 +97,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // OUTPUTWINDOW_H
diff --git a/src/plugins/coreplugin/patchtool.h b/src/plugins/coreplugin/patchtool.h
index 6297460995..9047bce7fb 100644
--- a/src/plugins/coreplugin/patchtool.h
+++ b/src/plugins/coreplugin/patchtool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_PATCHTOOL_H
-#define CORE_PATCHTOOL_H
+#pragma once
 
 #include "coreplugin/core_global.h"
 
@@ -44,5 +43,3 @@ public:
 };
 
 } // namespace Core
-
-#endif // CORE_PATCHTOOL_H
diff --git a/src/plugins/coreplugin/plugindialog.h b/src/plugins/coreplugin/plugindialog.h
index 5ef4e0cfc7..44e84637dd 100644
--- a/src/plugins/coreplugin/plugindialog.h
+++ b/src/plugins/coreplugin/plugindialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINDIALOG_H
-#define PLUGINDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // PLUGINDIALOG_H
diff --git a/src/plugins/coreplugin/progressmanager/futureprogress.h b/src/plugins/coreplugin/progressmanager/futureprogress.h
index 6647103009..e079b7e9e4 100644
--- a/src/plugins/coreplugin/progressmanager/futureprogress.h
+++ b/src/plugins/coreplugin/progressmanager/futureprogress.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FUTUREPROGRESS_H
-#define FUTUREPROGRESS_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 
@@ -102,5 +101,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // FUTUREPROGRESS_H
diff --git a/src/plugins/coreplugin/progressmanager/progressbar.h b/src/plugins/coreplugin/progressmanager/progressbar.h
index d2b9abc357..e2334447a2 100644
--- a/src/plugins/coreplugin/progressmanager/progressbar.h
+++ b/src/plugins/coreplugin/progressmanager/progressbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROGRESSBAR_H
-#define PROGRESSBAR_H
+#pragma once
 
 #include <QString>
 #include <QWidget>
@@ -93,5 +92,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // PROGRESSBAR_H
diff --git a/src/plugins/coreplugin/progressmanager/progressmanager.h b/src/plugins/coreplugin/progressmanager/progressmanager.h
index 6653a70b1f..4d006a45a7 100644
--- a/src/plugins/coreplugin/progressmanager/progressmanager.h
+++ b/src/plugins/coreplugin/progressmanager/progressmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROGRESSMANAGER_H
-#define PROGRESSMANAGER_H
+#pragma once
 
 #include <coreplugin/core_global.h>
 #include <coreplugin/id.h>
@@ -90,5 +89,3 @@ private:
 } // namespace Core
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Core::ProgressManager::ProgressFlags)
-
-#endif //PROGRESSMANAGER_H
diff --git a/src/plugins/coreplugin/progressmanager/progressmanager_p.h b/src/plugins/coreplugin/progressmanager/progressmanager_p.h
index 2217f78186..47e5c4334a 100644
--- a/src/plugins/coreplugin/progressmanager/progressmanager_p.h
+++ b/src/plugins/coreplugin/progressmanager/progressmanager_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROGRESSMANAGER_P_H
-#define PROGRESSMANAGER_P_H
+#pragma once
 
 #include "progressmanager.h"
 
@@ -122,5 +121,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // PROGRESSMANAGER_P_H
diff --git a/src/plugins/coreplugin/progressmanager/progressview.h b/src/plugins/coreplugin/progressmanager/progressview.h
index c8d312fb28..93a030793a 100644
--- a/src/plugins/coreplugin/progressmanager/progressview.h
+++ b/src/plugins/coreplugin/progressmanager/progressview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROGRESSVIEW_H
-#define PROGRESSVIEW_H
+#pragma once
 
 #include "progressmanager.h"
 
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // PROGRESSVIEW_H
diff --git a/src/plugins/coreplugin/removefiledialog.h b/src/plugins/coreplugin/removefiledialog.h
index db499ce9c7..f79dc82e02 100644
--- a/src/plugins/coreplugin/removefiledialog.h
+++ b/src/plugins/coreplugin/removefiledialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOVEFILEDIALOG_H
-#define REMOVEFILEDIALOG_H
+#pragma once
 
 #include "core_global.h"
 
@@ -50,5 +49,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // REMOVEFILEDIALOG_H
diff --git a/src/plugins/coreplugin/rightpane.h b/src/plugins/coreplugin/rightpane.h
index 1170fb6f80..4bcce788bb 100644
--- a/src/plugins/coreplugin/rightpane.h
+++ b/src/plugins/coreplugin/rightpane.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RIGHTPANE_H
-#define RIGHTPANE_H
+#pragma once
 
 #include "core_global.h"
 
@@ -89,5 +88,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // RIGHTPANE_H
diff --git a/src/plugins/coreplugin/settingsdatabase.h b/src/plugins/coreplugin/settingsdatabase.h
index d40fea13b4..382618552c 100644
--- a/src/plugins/coreplugin/settingsdatabase.h
+++ b/src/plugins/coreplugin/settingsdatabase.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSDATABASE_H
-#define SETTINGSDATABASE_H
+#pragma once
 
 #include "core_global.h"
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // SETTINGSDATABASE_H
diff --git a/src/plugins/coreplugin/shellcommand.h b/src/plugins/coreplugin/shellcommand.h
index 063ec7394a..7de7246d3d 100644
--- a/src/plugins/coreplugin/shellcommand.h
+++ b/src/plugins/coreplugin/shellcommand.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_SHELLCOMMAND_H
-#define CORE_SHELLCOMMAND_H
+#pragma once
 
 #include "core_global.h"
 
@@ -46,5 +45,3 @@ protected:
 };
 
 } // namespace Core
-
-#endif // CORE_SHELLCOMMAND_H
diff --git a/src/plugins/coreplugin/sidebar.h b/src/plugins/coreplugin/sidebar.h
index ab25daeea4..2a09357573 100644
--- a/src/plugins/coreplugin/sidebar.h
+++ b/src/plugins/coreplugin/sidebar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIDEBAR_H
-#define SIDEBAR_H
+#pragma once
 
 #include "core_global.h"
 #include "minisplitter.h"
@@ -126,5 +125,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // SIDEBAR_H
diff --git a/src/plugins/coreplugin/sidebarwidget.h b/src/plugins/coreplugin/sidebarwidget.h
index ad5ab85848..fbc6c09acc 100644
--- a/src/plugins/coreplugin/sidebarwidget.h
+++ b/src/plugins/coreplugin/sidebarwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIDEBARWIDGET_H
-#define SIDEBARWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SIDEBARWIDGET_H
diff --git a/src/plugins/coreplugin/statusbarmanager.h b/src/plugins/coreplugin/statusbarmanager.h
index 979df19ab9..1ca9c043c6 100644
--- a/src/plugins/coreplugin/statusbarmanager.h
+++ b/src/plugins/coreplugin/statusbarmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STATUSBARMANAGER_H
-#define STATUSBARMANAGER_H
+#pragma once
 
 #include "minisplitter.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // STATUSBARMANAGER_H
diff --git a/src/plugins/coreplugin/statusbarwidget.h b/src/plugins/coreplugin/statusbarwidget.h
index 45ba8b70f5..a21fbe1300 100644
--- a/src/plugins/coreplugin/statusbarwidget.h
+++ b/src/plugins/coreplugin/statusbarwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STATUSBARWIDGET_H
-#define STATUSBARWIDGET_H
+#pragma once
 
 #include "core_global.h"
 #include "icontext.h"
@@ -49,5 +48,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // STATUSBARWIDGET_H
diff --git a/src/plugins/coreplugin/styleanimator.h b/src/plugins/coreplugin/styleanimator.h
index b4926a00ed..020c00edef 100644
--- a/src/plugins/coreplugin/styleanimator.h
+++ b/src/plugins/coreplugin/styleanimator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STYLEANIMATOR_H
-#define STYLEANIMATOR_H
+#pragma once
 
 #include <QPointer>
 #include <QTime>
@@ -93,5 +92,3 @@ private:
     QBasicTimer animationTimer;
     QList <Animation*> animations;
 };
-
-#endif // STYLEANIMATOR_H
diff --git a/src/plugins/coreplugin/systemsettings.h b/src/plugins/coreplugin/systemsettings.h
index 7645b29eb3..a4b99be557 100644
--- a/src/plugins/coreplugin/systemsettings.h
+++ b/src/plugins/coreplugin/systemsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYSTEMSETTINGS_H
-#define SYSTEMSETTINGS_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <QPointer>
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // SYSTEMSETTINGS_H
diff --git a/src/plugins/coreplugin/testdatadir.h b/src/plugins/coreplugin/testdatadir.h
index 9e4d779e56..d60b0190d1 100644
--- a/src/plugins/coreplugin/testdatadir.h
+++ b/src/plugins/coreplugin/testdatadir.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTDATADIR_H
-#define TESTDATADIR_H
+#pragma once
 
 #include "core_global.h"
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Tests
 } // namespace Core
-
-#endif // TESTDATADIR_H
diff --git a/src/plugins/coreplugin/textdocument.h b/src/plugins/coreplugin/textdocument.h
index 42d38a5d15..1a2b27c356 100644
--- a/src/plugins/coreplugin/textdocument.h
+++ b/src/plugins/coreplugin/textdocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CORE_TEXTDOCUMENT_H
-#define CORE_TEXTDOCUMENT_H
+#pragma once
 
 #include "idocument.h"
 
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // CORE_TEXTDOCUMENT_H
diff --git a/src/plugins/coreplugin/themechooser.h b/src/plugins/coreplugin/themechooser.h
index 58186f116d..e95c480269 100644
--- a/src/plugins/coreplugin/themechooser.h
+++ b/src/plugins/coreplugin/themechooser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THEMECHOOSER_H
-#define THEMECHOOSER_H
+#pragma once
 
 #include "id.h"
 
@@ -70,5 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // THEMESETTINGS_H
diff --git a/src/plugins/coreplugin/toolsettings.h b/src/plugins/coreplugin/toolsettings.h
index c8ed371571..8ce3a8d8ba 100644
--- a/src/plugins/coreplugin/toolsettings.h
+++ b/src/plugins/coreplugin/toolsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TOOLSETTINGS_H
-#define TOOLSETTINGS_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // TOOLSETTINGS_H
diff --git a/src/plugins/coreplugin/variablechooser.h b/src/plugins/coreplugin/variablechooser.h
index cdc4f1be1c..00f79defeb 100644
--- a/src/plugins/coreplugin/variablechooser.h
+++ b/src/plugins/coreplugin/variablechooser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VARIABLECHOOSER_H
-#define VARIABLECHOOSER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // VARIABLECHOOSER_H
diff --git a/src/plugins/coreplugin/vcsmanager.h b/src/plugins/coreplugin/vcsmanager.h
index 51e559b4f9..71e3adeaf8 100644
--- a/src/plugins/coreplugin/vcsmanager.h
+++ b/src/plugins/coreplugin/vcsmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VCSMANAGER_H
-#define VCSMANAGER_H
+#pragma once
 
 #include "core_global.h"
 
@@ -110,5 +109,3 @@ private:
 };
 
 } // namespace Core
-
-#endif // VCSMANAGER_H
diff --git a/src/plugins/coreplugin/versiondialog.h b/src/plugins/coreplugin/versiondialog.h
index bbb39fc1bd..52efab01fe 100644
--- a/src/plugins/coreplugin/versiondialog.h
+++ b/src/plugins/coreplugin/versiondialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VERSIONDIALOG_H
-#define VERSIONDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace Core
-
-#endif // VERSIONDIALOG_H
diff --git a/src/plugins/coreplugin/windowsupport.h b/src/plugins/coreplugin/windowsupport.h
index a39a5707c2..6dc13914bf 100644
--- a/src/plugins/coreplugin/windowsupport.h
+++ b/src/plugins/coreplugin/windowsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINDOWSUPPORT_H
-#define WINDOWSUPPORT_H
+#pragma once
 
 #include "icontext.h"
 
@@ -84,5 +83,3 @@ private:
 
 } // Internal
 } // Core
-
-#endif // WINDOWSUPPORT_H
diff --git a/src/plugins/cpaster/frontend/argumentscollector.h b/src/plugins/cpaster/frontend/argumentscollector.h
index 6fc5d1fefb..d3d94c8b75 100644
--- a/src/plugins/cpaster/frontend/argumentscollector.h
+++ b/src/plugins/cpaster/frontend/argumentscollector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ARGUMENTSCOLLECTOR_H
-#define ARGUMENTSCOLLECTOR_H
+#pragma once
 
 #include <QStringList>
 
@@ -56,5 +55,3 @@ private:
     QString m_protocol;
     QString m_errorString;
 };
-
-#endif // ARGUMENTSCOLLECTOR_H
diff --git a/src/plugins/cppeditor/cppautocompleter.h b/src/plugins/cppeditor/cppautocompleter.h
index 9df35f1330..d58acda608 100644
--- a/src/plugins/cppeditor/cppautocompleter.h
+++ b/src/plugins/cppeditor/cppautocompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPAUTOCOMPLETER_H
-#define CPPAUTOCOMPLETER_H
+#pragma once
 
 #include <texteditor/autocompleter.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // Internal
 } // CppEditor
-
-#endif // CPPAUTOCOMPLETER_H
diff --git a/src/plugins/cppeditor/cppcanonicalsymbol.h b/src/plugins/cppeditor/cppcanonicalsymbol.h
index aca83a387a..293859e9a5 100644
--- a/src/plugins/cppeditor/cppcanonicalsymbol.h
+++ b/src/plugins/cppeditor/cppcanonicalsymbol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCANONICALSYMBOL_H
-#define CPPCANONICALSYMBOL_H
+#pragma once
 
 #include <cplusplus/LookupContext.h>
 #include <cplusplus/Symbol.h>
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPCANONICALSYMBOL_H
diff --git a/src/plugins/cppeditor/cppcodemodelinspectordialog.h b/src/plugins/cppeditor/cppcodemodelinspectordialog.h
index bbb8d35810..ca17d960ba 100644
--- a/src/plugins/cppeditor/cppcodemodelinspectordialog.h
+++ b/src/plugins/cppeditor/cppcodemodelinspectordialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODEMODELINSPECTORDIALOG_H
-#define CPPCODEMODELINSPECTORDIALOG_H
+#pragma once
 
 #include <cpptools/cppmodelmanager.h>
 
@@ -121,5 +120,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPCODEMODELINSPECTORDIALOG_H
diff --git a/src/plugins/cppeditor/cppdocumentationcommenthelper.h b/src/plugins/cppeditor/cppdocumentationcommenthelper.h
index f384968965..af864b1bfc 100644
--- a/src/plugins/cppeditor/cppdocumentationcommenthelper.h
+++ b/src/plugins/cppeditor/cppdocumentationcommenthelper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPDOCUMENTATIONCOMMENTHELPER_H
-#define CPPDOCUMENTATIONCOMMENTHELPER_H
+#pragma once
 
 #include "cppeditor_global.h"
 
@@ -39,5 +38,3 @@ bool trySplitComment(TextEditor::TextEditorWidget *editorWidget,
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPDOCUMENTATIONCOMMENTHELPER_H
diff --git a/src/plugins/cppeditor/cppdoxygen_test.h b/src/plugins/cppeditor/cppdoxygen_test.h
index 68f6b2509a..99af70ce0f 100644
--- a/src/plugins/cppeditor/cppdoxygen_test.h
+++ b/src/plugins/cppeditor/cppdoxygen_test.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPDOXYGEN_TEST_H
-#define CPPDOXYGEN_TEST_H
+#pragma once
 
 #include "cppeditortestcase.h"
 
@@ -68,5 +67,3 @@ private:
 } // namespace Tests
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPDOXYGEN_TEST_H
diff --git a/src/plugins/cppeditor/cppeditor.h b/src/plugins/cppeditor/cppeditor.h
index 8b74d74d40..8317ebfd91 100644
--- a/src/plugins/cppeditor/cppeditor.h
+++ b/src/plugins/cppeditor/cppeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITOR_H
-#define CPPEDITOR_H
+#pragma once
 
 #include "cppfunctiondecldeflink.h"
 
@@ -145,5 +144,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPEDITOR_H
diff --git a/src/plugins/cppeditor/cppeditor_global.h b/src/plugins/cppeditor/cppeditor_global.h
index 4491614d7c..df1a19f39e 100644
--- a/src/plugins/cppeditor/cppeditor_global.h
+++ b/src/plugins/cppeditor/cppeditor_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITOR_GLOBAL_H
-#define CPPEDITOR_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define CPPEDITOR_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // CPPEDITOR_GLOBAL_H
diff --git a/src/plugins/cppeditor/cppeditorconstants.h b/src/plugins/cppeditor/cppeditorconstants.h
index 417a637351..1d72be7a7a 100644
--- a/src/plugins/cppeditor/cppeditorconstants.h
+++ b/src/plugins/cppeditor/cppeditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITORCONSTANTS_H
-#define CPPEDITORCONSTANTS_H
+#pragma once
 
 namespace CppEditor {
 namespace Constants {
@@ -53,5 +52,3 @@ const char CPP_PREPROCESSOR_PROJECT_PREFIX[] = "CppPreprocessorProject-";
 
 } // namespace Constants
 } // namespace CppEditor
-
-#endif // CPPEDITORCONSTANTS_H
diff --git a/src/plugins/cppeditor/cppeditordocument.h b/src/plugins/cppeditor/cppeditordocument.h
index c932aa1389..61185f9738 100644
--- a/src/plugins/cppeditor/cppeditordocument.h
+++ b/src/plugins/cppeditor/cppeditordocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITORDOCUMENT_H
-#define CPPEDITORDOCUMENT_H
+#pragma once
 
 #include <cpptools/baseeditordocumentprocessor.h>
 #include <cpptools/cppcompletionassistprovider.h>
@@ -119,5 +118,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPEDITORDOCUMENT_H
diff --git a/src/plugins/cppeditor/cppeditorenums.h b/src/plugins/cppeditor/cppeditorenums.h
index 6437f38fc8..909073c3ee 100644
--- a/src/plugins/cppeditor/cppeditorenums.h
+++ b/src/plugins/cppeditor/cppeditorenums.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITORENUMS_H
-#define CPPEDITORENUMS_H
+#pragma once
 
 namespace CppEditor {
 namespace Internal {
@@ -52,5 +51,3 @@ enum CppFormats {
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPEDITORENUMS_H
diff --git a/src/plugins/cppeditor/cppeditorplugin.h b/src/plugins/cppeditor/cppeditorplugin.h
index 7c36b2ee7c..935de13e33 100644
--- a/src/plugins/cppeditor/cppeditorplugin.h
+++ b/src/plugins/cppeditor/cppeditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITORPLUGIN_H
-#define CPPEDITORPLUGIN_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditorfactory.h>
 
@@ -252,5 +251,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPEDITORPLUGIN_H
diff --git a/src/plugins/cppeditor/cppeditortestcase.h b/src/plugins/cppeditor/cppeditortestcase.h
index 4b4239c295..dafca4ec14 100644
--- a/src/plugins/cppeditor/cppeditortestcase.h
+++ b/src/plugins/cppeditor/cppeditortestcase.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITORTESTCASE_H
-#define CPPEDITORTESTCASE_H
+#pragma once
 
 #include "cppeditor.h"
 
@@ -76,5 +75,3 @@ public:
 } // namespace Tests
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPEDITORTESTCASE_H
diff --git a/src/plugins/cppeditor/cppelementevaluator.h b/src/plugins/cppeditor/cppelementevaluator.h
index a528148350..ffc6bd760a 100644
--- a/src/plugins/cppeditor/cppelementevaluator.h
+++ b/src/plugins/cppeditor/cppelementevaluator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPELEMENTEVALUATOR_H
-#define CPPELEMENTEVALUATOR_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 #include <texteditor/helpitem.h>
@@ -193,5 +192,3 @@ public:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPELEMENTEVALUATOR_H
diff --git a/src/plugins/cppeditor/cppfollowsymbolundercursor.h b/src/plugins/cppeditor/cppfollowsymbolundercursor.h
index bedea8f4d9..3121fe00e8 100644
--- a/src/plugins/cppeditor/cppfollowsymbolundercursor.h
+++ b/src/plugins/cppeditor/cppfollowsymbolundercursor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPFOLLOWSYMBOLUNDERCURSOR_H
-#define CPPFOLLOWSYMBOLUNDERCURSOR_H
+#pragma once
 
 #include <cplusplus/CppDocument.h>
 #include <texteditor/texteditor.h>
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPFOLLOWSYMBOLUNDERCURSOR_H
diff --git a/src/plugins/cppeditor/cppfunctiondecldeflink.h b/src/plugins/cppeditor/cppfunctiondecldeflink.h
index ec866c551f..03c1992271 100644
--- a/src/plugins/cppeditor/cppfunctiondecldeflink.h
+++ b/src/plugins/cppeditor/cppfunctiondecldeflink.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPFUNCTIONDECLDEFLINK_H
-#define CPPFUNCTIONDECLDEFLINK_H
+#pragma once
 
 #include "cppquickfix.h"
 
@@ -118,5 +117,3 @@ private:
 } // namespace CppEditor
 
 Q_DECLARE_METATYPE(CppEditor::Internal::FunctionDeclDefLink::Marker)
-
-#endif // CPPFUNCTIONDECLDEFLINK_H
diff --git a/src/plugins/cppeditor/cpphighlighter.h b/src/plugins/cppeditor/cpphighlighter.h
index b7da0c14be..fd9ba578a5 100644
--- a/src/plugins/cppeditor/cpphighlighter.h
+++ b/src/plugins/cppeditor/cpphighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPHIGHLIGHTER_H
-#define CPPHIGHLIGHTER_H
+#pragma once
 
 #include <texteditor/syntaxhighlighter.h>
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPHIGHLIGHTER_H
diff --git a/src/plugins/cppeditor/cpphoverhandler.h b/src/plugins/cppeditor/cpphoverhandler.h
index 7562f42e25..accc275152 100644
--- a/src/plugins/cppeditor/cpphoverhandler.h
+++ b/src/plugins/cppeditor/cpphoverhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPHOVERHANDLER_H
-#define CPPHOVERHANDLER_H
+#pragma once
 
 #include <texteditor/basehoverhandler.h>
 
@@ -44,5 +43,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPHOVERHANDLER_H
diff --git a/src/plugins/cppeditor/cppincludehierarchy.h b/src/plugins/cppeditor/cppincludehierarchy.h
index ba50706033..9ae1efdaf8 100644
--- a/src/plugins/cppeditor/cppincludehierarchy.h
+++ b/src/plugins/cppeditor/cppincludehierarchy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPINCLUDEHIERARCHY_H
-#define CPPINCLUDEHIERARCHY_H
+#pragma once
 
 #include <coreplugin/inavigationwidgetfactory.h>
 
@@ -111,5 +110,3 @@ public:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPINCLUDEHIERARCHY_H
diff --git a/src/plugins/cppeditor/cppincludehierarchyitem.h b/src/plugins/cppeditor/cppincludehierarchyitem.h
index 8723be14b2..f7cd897dab 100644
--- a/src/plugins/cppeditor/cppincludehierarchyitem.h
+++ b/src/plugins/cppeditor/cppincludehierarchyitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPINCLUDEHIERARCHYITEM_H
-#define CPPINCLUDEHIERARCHYITEM_H
+#pragma once
 
 #include <QList>
 #include <QString>
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPINCLUDEHIERARCHYITEM_H
diff --git a/src/plugins/cppeditor/cppincludehierarchymodel.h b/src/plugins/cppeditor/cppincludehierarchymodel.h
index 35f96ac7b3..2bc80bcb12 100644
--- a/src/plugins/cppeditor/cppincludehierarchymodel.h
+++ b/src/plugins/cppeditor/cppincludehierarchymodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPINCLUDEHIERARCHYMODEL_H
-#define CPPINCLUDEHIERARCHYMODEL_H
+#pragma once
 
 #include <QAbstractItemModel>
 
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPINCLUDEHIERARCHYMODEL_H
diff --git a/src/plugins/cppeditor/cppincludehierarchytreeview.h b/src/plugins/cppeditor/cppincludehierarchytreeview.h
index 06b53708cf..083b6f1614 100644
--- a/src/plugins/cppeditor/cppincludehierarchytreeview.h
+++ b/src/plugins/cppeditor/cppincludehierarchytreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPINCLUDEHIERARCHYTREEVIEW_H
-#define CPPINCLUDEHIERARCHYTREEVIEW_H
+#pragma once
 
 #include <utils/navigationtreeview.h>
 
@@ -41,5 +40,3 @@ protected:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPINCLUDEHIERARCHYTREEVIEW_H
diff --git a/src/plugins/cppeditor/cppinsertvirtualmethods.h b/src/plugins/cppeditor/cppinsertvirtualmethods.h
index ea5d2ee1fb..cc48fede93 100644
--- a/src/plugins/cppeditor/cppinsertvirtualmethods.h
+++ b/src/plugins/cppeditor/cppinsertvirtualmethods.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INSERTVIRTUALMETHODS_H
-#define INSERTVIRTUALMETHODS_H
+#pragma once
 
 #include "cppquickfix.h"
 
@@ -50,5 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // INSERTVIRTUALMETHODS_H
diff --git a/src/plugins/cppeditor/cppoutline.h b/src/plugins/cppeditor/cppoutline.h
index 573d559bb5..fdc8671639 100644
--- a/src/plugins/cppeditor/cppoutline.h
+++ b/src/plugins/cppeditor/cppoutline.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPOUTLINE_H
-#define CPPOUTLINE_H
+#pragma once
 
 #include "cppeditor.h"
 
@@ -100,5 +99,3 @@ public:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPOUTLINE_H
diff --git a/src/plugins/cppeditor/cpppreprocessordialog.h b/src/plugins/cppeditor/cpppreprocessordialog.h
index 470a2ad93a..bce7f4e343 100644
--- a/src/plugins/cppeditor/cpppreprocessordialog.h
+++ b/src/plugins/cppeditor/cpppreprocessordialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPPREPROCESSORDIALOG_H
-#define CPPPREPROCESSORDIALOG_H
+#pragma once
 
 #include <cpptools/cppmodelmanager.h>
 
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPPREPROCESSORDIALOG_H
diff --git a/src/plugins/cppeditor/cppquickfix.h b/src/plugins/cppeditor/cppquickfix.h
index 38b5fe3468..02c63534c7 100644
--- a/src/plugins/cppeditor/cppquickfix.h
+++ b/src/plugins/cppeditor/cppquickfix.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPQUICKFIX_H
-#define CPPQUICKFIX_H
+#pragma once
 
 #include "cppeditor_global.h"
 #include "cppquickfixassistant.h"
@@ -64,5 +63,3 @@ public:
 };
 
 } // namespace CppEditor
-
-#endif // CPPQUICKFIX_H
diff --git a/src/plugins/cppeditor/cppquickfixassistant.h b/src/plugins/cppeditor/cppquickfixassistant.h
index 8da6b1da6a..96c259aab4 100644
--- a/src/plugins/cppeditor/cppquickfixassistant.h
+++ b/src/plugins/cppeditor/cppquickfixassistant.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPQUICKFIXASSISTANT_H
-#define CPPQUICKFIXASSISTANT_H
+#pragma once
 
 #include <cpptools/cppsemanticinfo.h>
 #include <texteditor/codeassist/assistinterface.h>
@@ -81,5 +80,3 @@ public:
 
 } // Internal
 } // CppEditor
-
-#endif // CPPQUICKFIXASSISTANT_H
diff --git a/src/plugins/cppeditor/cppquickfixes.h b/src/plugins/cppeditor/cppquickfixes.h
index eb99e732a4..55e3a4e80c 100644
--- a/src/plugins/cppeditor/cppquickfixes.h
+++ b/src/plugins/cppeditor/cppquickfixes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPQUICKFIXES_H
-#define CPPQUICKFIXES_H
+#pragma once
 
 #include "cppeditor_global.h"
 #include "cppquickfix.h"
@@ -567,5 +566,3 @@ public:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPQUICKFIXES_H
diff --git a/src/plugins/cppeditor/cppsnippetprovider.h b/src/plugins/cppeditor/cppsnippetprovider.h
index 361413181d..fd6d3b26bb 100644
--- a/src/plugins/cppeditor/cppsnippetprovider.h
+++ b/src/plugins/cppeditor/cppsnippetprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPSNIPPETPROVIDER_H
-#define CPPSNIPPETPROVIDER_H
+#pragma once
 
 #include <texteditor/snippets/isnippetprovider.h>
 
@@ -45,5 +44,3 @@ public:
 
 } // Internal
 } // CppEditor
-
-#endif // CPPSNIPPETPROVIDER_H
diff --git a/src/plugins/cppeditor/cpptypehierarchy.h b/src/plugins/cppeditor/cpptypehierarchy.h
index a9d4ac0626..861a7875b3 100644
--- a/src/plugins/cppeditor/cpptypehierarchy.h
+++ b/src/plugins/cppeditor/cpptypehierarchy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTYPEHIERARCHY_H
-#define CPPTYPEHIERARCHY_H
+#pragma once
 
 #include <coreplugin/inavigationwidgetfactory.h>
 
@@ -111,5 +110,3 @@ public:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPTYPEHIERARCHY_H
diff --git a/src/plugins/cppeditor/cppuseselectionsupdater.h b/src/plugins/cppeditor/cppuseselectionsupdater.h
index d1bc479dc9..00f173c194 100644
--- a/src/plugins/cppeditor/cppuseselectionsupdater.h
+++ b/src/plugins/cppeditor/cppuseselectionsupdater.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPUSESELECTIONSUPDATER_H
-#define CPPUSESELECTIONSUPDATER_H
+#pragma once
 
 #include <cpptools/cppsemanticinfo.h>
 #include <texteditor/texteditorconstants.h>
@@ -114,5 +113,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPUSESELECTIONSUPDATER_H
diff --git a/src/plugins/cppeditor/cppvirtualfunctionassistprovider.h b/src/plugins/cppeditor/cppvirtualfunctionassistprovider.h
index 11c67de2a4..5a930530b5 100644
--- a/src/plugins/cppeditor/cppvirtualfunctionassistprovider.h
+++ b/src/plugins/cppeditor/cppvirtualfunctionassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPFOLLOWVIRTUALSYMBOLS_H
-#define CPPFOLLOWVIRTUALSYMBOLS_H
+#pragma once
 
 #include <texteditor/codeassist/iassistprovider.h>
 
@@ -68,5 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPFOLLOWVIRTUALSYMBOLS_H
diff --git a/src/plugins/cppeditor/cppvirtualfunctionproposalitem.h b/src/plugins/cppeditor/cppvirtualfunctionproposalitem.h
index 5a28e1f902..5d86d4b390 100644
--- a/src/plugins/cppeditor/cppvirtualfunctionproposalitem.h
+++ b/src/plugins/cppeditor/cppvirtualfunctionproposalitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPVIRTUALFUNCTIONPROPOSALITEM_H
-#define CPPVIRTUALFUNCTIONPROPOSALITEM_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 #include <texteditor/codeassist/assistproposalitem.h>
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace CppEditor
-
-#endif // CPPVIRTUALFUNCTIONPROPOSALITEM_H
diff --git a/src/plugins/cpptools/abstracteditorsupport.h b/src/plugins/cpptools/abstracteditorsupport.h
index 7db8c69f99..0aacf3a4d2 100644
--- a/src/plugins/cpptools/abstracteditorsupport.h
+++ b/src/plugins/cpptools/abstracteditorsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTEDITORSUPPORT_H
-#define ABSTRACTEDITORSUPPORT_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // ABSTRACTEDITORSUPPORT_H
diff --git a/src/plugins/cpptools/baseeditordocumentparser.h b/src/plugins/cpptools/baseeditordocumentparser.h
index 82d2532326..3822394c61 100644
--- a/src/plugins/cpptools/baseeditordocumentparser.h
+++ b/src/plugins/cpptools/baseeditordocumentparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEEDITORDOCUMENTPARSER_H
-#define BASEEDITORDOCUMENTPARSER_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppworkingcopy.h"
@@ -86,5 +85,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // BASEEDITORDOCUMENTPARSER_H
diff --git a/src/plugins/cpptools/baseeditordocumentprocessor.h b/src/plugins/cpptools/baseeditordocumentprocessor.h
index 5f8e9a7353..844cadc64c 100644
--- a/src/plugins/cpptools/baseeditordocumentprocessor.h
+++ b/src/plugins/cpptools/baseeditordocumentprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEEDITORDOCUMENTPROCESSOR_H
-#define BASEEDITORDOCUMENTPROCESSOR_H
+#pragma once
 
 #include "baseeditordocumentparser.h"
 #include "cppsemanticinfo.h"
@@ -99,6 +98,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // BASEEDITORDOCUMENTPROCESSOR_H
-
diff --git a/src/plugins/cpptools/builtineditordocumentparser.h b/src/plugins/cpptools/builtineditordocumentparser.h
index e86939ab53..c2eb4c86ee 100644
--- a/src/plugins/cpptools/builtineditordocumentparser.h
+++ b/src/plugins/cpptools/builtineditordocumentparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BUILTINEDITORDOCUMENTPARSER_H
-#define BUILTINEDITORDOCUMENTPARSER_H
+#pragma once
 
 #include "baseeditordocumentparser.h"
 #include "cpptools_global.h"
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // BUILTINEDITORDOCUMENTPARSER_H
diff --git a/src/plugins/cpptools/builtineditordocumentprocessor.h b/src/plugins/cpptools/builtineditordocumentprocessor.h
index e971655101..2efd6af078 100644
--- a/src/plugins/cpptools/builtineditordocumentprocessor.h
+++ b/src/plugins/cpptools/builtineditordocumentprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BUILTINEDITORDOCUMENTPROCESSOR_H
-#define BUILTINEDITORDOCUMENTPROCESSOR_H
+#pragma once
 
 #include "baseeditordocumentprocessor.h"
 #include "builtineditordocumentparser.h"
@@ -73,5 +72,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // BUILTINEDITORDOCUMENTPROCESSOR_H
diff --git a/src/plugins/cpptools/builtinindexingsupport.h b/src/plugins/cpptools/builtinindexingsupport.h
index d40948a14f..82414338ec 100644
--- a/src/plugins/cpptools/builtinindexingsupport.h
+++ b/src/plugins/cpptools/builtinindexingsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BUILTININDEXINGSUPPORT_H
-#define BUILTININDEXINGSUPPORT_H
+#pragma once
 
 #include "cppindexingsupport.h"
 #include "cppmodelmanager.h"
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // BUILTININDEXINGSUPPORT_H
diff --git a/src/plugins/cpptools/commentssettings.h b/src/plugins/cpptools/commentssettings.h
index d0d3d5da29..f5ba5f0f09 100644
--- a/src/plugins/cpptools/commentssettings.h
+++ b/src/plugins/cpptools/commentssettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMMENTSSETTINGS_H
-#define COMMENTSSETTINGS_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -56,5 +55,3 @@ inline bool operator!=(const CommentsSettings &a, const CommentsSettings &b)
 { return !(a == b); }
 
 } // namespace CppTools
-
-#endif // COMMENTSSETTINGS_H
diff --git a/src/plugins/cpptools/compileroptionsbuilder.h b/src/plugins/cpptools/compileroptionsbuilder.h
index f3e4cbd9df..e83d15f2c1 100644
--- a/src/plugins/cpptools/compileroptionsbuilder.h
+++ b/src/plugins/cpptools/compileroptionsbuilder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_COMPILEROPTIONSBUILDER_H
-#define CPPTOOLS_COMPILEROPTIONSBUILDER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_COMPILEROPTIONSBUILDER_H
diff --git a/src/plugins/cpptools/completionsettingspage.h b/src/plugins/cpptools/completionsettingspage.h
index f972ab5fa6..3cc1a3eb14 100644
--- a/src/plugins/cpptools/completionsettingspage.h
+++ b/src/plugins/cpptools/completionsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPLETIONSETTINGSPAGE_H
-#define COMPLETIONSETTINGSPAGE_H
+#pragma once
 
 #include "commentssettings.h"
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // COMPLETIONSETTINGSPAGE_H
diff --git a/src/plugins/cpptools/cppchecksymbols.h b/src/plugins/cpptools/cppchecksymbols.h
index e91bab1f57..1cbd3f1030 100644
--- a/src/plugins/cpptools/cppchecksymbols.h
+++ b/src/plugins/cpptools/cppchecksymbols.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUSCHECKSYMBOLS_H
-#define CPLUSPLUSCHECKSYMBOLS_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppsemanticinfo.h"
@@ -193,5 +192,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPLUSPLUSCHECKSYMBOLS_H
diff --git a/src/plugins/cpptools/cppclassesfilter.h b/src/plugins/cpptools/cppclassesfilter.h
index 2ae81cbc57..89d80df26b 100644
--- a/src/plugins/cpptools/cppclassesfilter.h
+++ b/src/plugins/cpptools/cppclassesfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCLASSESFILTER_H
-#define CPPCLASSESFILTER_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cpplocatorfilter.h"
@@ -48,5 +47,3 @@ protected:
 };
 
 } // namespace CppTools
-
-#endif // CPPCLASSESFILTER_H
diff --git a/src/plugins/cpptools/cppcodeformatter.h b/src/plugins/cpptools/cppcodeformatter.h
index e686deb8b6..f6e2e7e17c 100644
--- a/src/plugins/cpptools/cppcodeformatter.h
+++ b/src/plugins/cpptools/cppcodeformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODEFORMATTER_H
-#define CPPCODEFORMATTER_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppcodestylesettings.h"
@@ -288,5 +287,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPCODEFORMATTER_H
diff --git a/src/plugins/cpptools/cppcodemodelinspectordumper.h b/src/plugins/cpptools/cppcodemodelinspectordumper.h
index 01b836b75e..c548b92bc4 100644
--- a/src/plugins/cpptools/cppcodemodelinspectordumper.h
+++ b/src/plugins/cpptools/cppcodemodelinspectordumper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODEMODELINSPECTORDUMPER_H
-#define CPPCODEMODELINSPECTORDUMPER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -88,5 +87,3 @@ private:
 
 } // namespace CppCodeModelInspector
 } // namespace CppTools
-
-#endif // CPPCODEMODELINSPECTORDUMPER_H
diff --git a/src/plugins/cpptools/cppcodemodelsettings.h b/src/plugins/cpptools/cppcodemodelsettings.h
index 81dab011af..92a212f8a8 100644
--- a/src/plugins/cpptools/cppcodemodelsettings.h
+++ b/src/plugins/cpptools/cppcodemodelsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPCODEMODELSETTINGS_H
-#define CPPTOOLS_CPPCODEMODELSETTINGS_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_CPPCODEMODELSETTINGS_H
diff --git a/src/plugins/cpptools/cppcodemodelsettingspage.h b/src/plugins/cpptools/cppcodemodelsettingspage.h
index 29fbb77069..6641c7898c 100644
--- a/src/plugins/cpptools/cppcodemodelsettingspage.h
+++ b/src/plugins/cpptools/cppcodemodelsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_INTERNAL_CPPCODEMODELSETTINGSPAGE_H
-#define CPPTOOLS_INTERNAL_CPPCODEMODELSETTINGSPAGE_H
+#pragma once
 
 #include "cppcodemodelsettings.h"
 
@@ -85,5 +84,3 @@ private:
 
 } // Internal namespace
 } // CppTools namespace
-
-#endif // CPPTOOLS_INTERNAL_CPPCODEMODELSETTINGSPAGE_H
diff --git a/src/plugins/cpptools/cppcodestylepreferences.h b/src/plugins/cpptools/cppcodestylepreferences.h
index 2190c35b47..7317528a02 100644
--- a/src/plugins/cpptools/cppcodestylepreferences.h
+++ b/src/plugins/cpptools/cppcodestylepreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODESTYLEPREFERENCES_H
-#define CPPCODESTYLEPREFERENCES_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppcodestylesettings.h"
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPCODESTYLEPREFERENCES_H
diff --git a/src/plugins/cpptools/cppcodestylepreferencesfactory.h b/src/plugins/cpptools/cppcodestylepreferencesfactory.h
index bcd3d46928..05f28ede6e 100644
--- a/src/plugins/cpptools/cppcodestylepreferencesfactory.h
+++ b/src/plugins/cpptools/cppcodestylepreferencesfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODESTYLEPREFERENCESFACTORY_H
-#define CPPCODESTYLEPREFERENCESFACTORY_H
+#pragma once
 
 #include <texteditor/icodestylepreferencesfactory.h>
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace CppTools
-
-#endif // CPPCODESTYLEPREFERENCESFACTORY_H
diff --git a/src/plugins/cpptools/cppcodestylesettings.h b/src/plugins/cpptools/cppcodestylesettings.h
index 0646010cf5..60dcc2fbf6 100644
--- a/src/plugins/cpptools/cppcodestylesettings.h
+++ b/src/plugins/cpptools/cppcodestylesettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODESTYLESETTINGS_H
-#define CPPCODESTYLESETTINGS_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -110,5 +109,3 @@ public:
 } // namespace CppTools
 
 Q_DECLARE_METATYPE(CppTools::CppCodeStyleSettings)
-
-#endif // CPPCODESTYLESETTINGS_H
diff --git a/src/plugins/cpptools/cppcodestylesettingspage.h b/src/plugins/cpptools/cppcodestylesettingspage.h
index 63e3ed4aca..c9ae76e1cd 100644
--- a/src/plugins/cpptools/cppcodestylesettingspage.h
+++ b/src/plugins/cpptools/cppcodestylesettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCODESTYLESETTINGSPAGE_H
-#define CPPCODESTYLESETTINGSPAGE_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppcodestylesettings.h"
@@ -98,5 +97,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPCODESTYLESETTINGSPAGE_H
diff --git a/src/plugins/cpptools/cppcompletionassist.h b/src/plugins/cpptools/cppcompletionassist.h
index 738840cd15..14a9e9190c 100644
--- a/src/plugins/cpptools/cppcompletionassist.h
+++ b/src/plugins/cpptools/cppcompletionassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCOMPLETIONASSIST_H
-#define CPPCOMPLETIONASSIST_H
+#pragma once
 
 #include "builtineditordocumentparser.h"
 #include "cppcompletionassistprocessor.h"
@@ -214,5 +213,3 @@ private:
 } // CppTools
 
 Q_DECLARE_METATYPE(CPlusPlus::Symbol *)
-
-#endif // CPPCOMPLETIONASSIST_H
diff --git a/src/plugins/cpptools/cppcompletionassistprocessor.h b/src/plugins/cpptools/cppcompletionassistprocessor.h
index 862d77f53f..49634539ce 100644
--- a/src/plugins/cpptools/cppcompletionassistprocessor.h
+++ b/src/plugins/cpptools/cppcompletionassistprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCOMPLETIONASSISTPROCESSOR_H
-#define CPPCOMPLETIONASSISTPROCESSOR_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPCOMPLETIONASSISTPROCESSOR_H
diff --git a/src/plugins/cpptools/cppcompletionassistprovider.h b/src/plugins/cpptools/cppcompletionassistprovider.h
index 975f880c61..16382581c7 100644
--- a/src/plugins/cpptools/cppcompletionassistprovider.h
+++ b/src/plugins/cpptools/cppcompletionassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPCOMPLETIONASSISTPROVIDER_H
-#define CPPTOOLS_CPPCOMPLETIONASSISTPROVIDER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -67,5 +66,3 @@ public:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_CPPCOMPLETIONASSISTPROVIDER_H
diff --git a/src/plugins/cpptools/cppcurrentdocumentfilter.h b/src/plugins/cpptools/cppcurrentdocumentfilter.h
index 3b664ac650..3e30f6ddab 100644
--- a/src/plugins/cpptools/cppcurrentdocumentfilter.h
+++ b/src/plugins/cpptools/cppcurrentdocumentfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPCURRENTDOCUMENTFILTER_H
-#define CPPCURRENTDOCUMENTFILTER_H
+#pragma once
 
 #include "searchsymbols.h"
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPCURRENTDOCUMENTFILTER_H
diff --git a/src/plugins/cpptools/cppdoxygen.h b/src/plugins/cpptools/cppdoxygen.h
index 29c258a3d1..2eb8b001f1 100644
--- a/src/plugins/cpptools/cppdoxygen.h
+++ b/src/plugins/cpptools/cppdoxygen.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPDOXYGEN_H
-#define CPPDOXYGEN_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -258,5 +257,3 @@ CPPTOOLS_EXPORT int classifyDoxygenTag(const QChar *s, int n);
 CPPTOOLS_EXPORT const char *doxygenTagSpell(int index);
 
 } // namespace ::CppTools
-
-#endif // CPPDOXYGEN_H
diff --git a/src/plugins/cpptools/cppeditoroutline.h b/src/plugins/cpptools/cppeditoroutline.h
index 9c561eec82..361b2fe25a 100644
--- a/src/plugins/cpptools/cppeditoroutline.h
+++ b/src/plugins/cpptools/cppeditoroutline.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPEDITOROUTLINE_H
-#define CPPEDITOROUTLINE_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -90,5 +89,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPEDITOROUTLINE_H
diff --git a/src/plugins/cpptools/cppfileiterationorder.h b/src/plugins/cpptools/cppfileiterationorder.h
index 3db83e749f..3df02ee22b 100644
--- a/src/plugins/cpptools/cppfileiterationorder.h
+++ b/src/plugins/cpptools/cppfileiterationorder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEITERATIONORDER_H
-#define FILEITERATIONORDER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -75,5 +74,3 @@ CPPTOOLS_EXPORT bool operator<(const FileIterationOrder::Entry &first,
                                const FileIterationOrder::Entry &second);
 
 } // namespace CppTools
-
-#endif // FILEITERATIONORDER_H
diff --git a/src/plugins/cpptools/cppfilesettingspage.h b/src/plugins/cpptools/cppfilesettingspage.h
index 24f5b368ec..4731adc7c9 100644
--- a/src/plugins/cpptools/cppfilesettingspage.h
+++ b/src/plugins/cpptools/cppfilesettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPFILESETTINGSPAGE_H
-#define CPPFILESETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -103,5 +102,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPFILESETTINGSPAGE_H
diff --git a/src/plugins/cpptools/cppfindreferences.h b/src/plugins/cpptools/cppfindreferences.h
index 233e1bff4d..c747e502dd 100644
--- a/src/plugins/cpptools/cppfindreferences.h
+++ b/src/plugins/cpptools/cppfindreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPFINDREFERENCES_H
-#define CPPFINDREFERENCES_H
+#pragma once
 
 #include <cplusplus/FindUsages.h>
 
@@ -100,5 +99,3 @@ private:
 } // namespace CppTools
 
 Q_DECLARE_METATYPE(CppTools::Internal::CppFindReferencesParameters)
-
-#endif // CPPFINDREFERENCES_H
diff --git a/src/plugins/cpptools/cppfunctionsfilter.h b/src/plugins/cpptools/cppfunctionsfilter.h
index 6976d4b35f..f052a7a2d2 100644
--- a/src/plugins/cpptools/cppfunctionsfilter.h
+++ b/src/plugins/cpptools/cppfunctionsfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPFUNCTIONSFILTER_H
-#define CPPFUNCTIONSFILTER_H
+#pragma once
 
 #include "cpplocatordata.h"
 #include "cpplocatorfilter.h"
@@ -48,5 +47,3 @@ protected:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPFUNCTIONSFILTER_H
diff --git a/src/plugins/cpptools/cppincludesfilter.h b/src/plugins/cpptools/cppincludesfilter.h
index c1c87a6d38..84700c8a10 100644
--- a/src/plugins/cpptools/cppincludesfilter.h
+++ b/src/plugins/cpptools/cppincludesfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPINCLUDESFILTER_H
-#define CPPINCLUDESFILTER_H
+#pragma once
 
 #include <coreplugin/locator/basefilefilter.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPINCLUDESFILTER_H
diff --git a/src/plugins/cpptools/cppindexingsupport.h b/src/plugins/cpptools/cppindexingsupport.h
index d201592663..e97bb50f67 100644
--- a/src/plugins/cpptools/cppindexingsupport.h
+++ b/src/plugins/cpptools/cppindexingsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPINDEXINGSUPPORT_H
-#define CPPTOOLS_CPPINDEXINGSUPPORT_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -90,5 +89,3 @@ public:
 Q_DECLARE_METATYPE(CppTools::SymbolSearcher::SearchScope)
 Q_DECLARE_METATYPE(CppTools::SymbolSearcher::Parameters)
 Q_DECLARE_METATYPE(CppTools::SymbolSearcher::SymbolTypes)
-
-#endif // CPPTOOLS_CPPINDEXINGSUPPORT_H
diff --git a/src/plugins/cpptools/cpplocalsymbols.h b/src/plugins/cpptools/cpplocalsymbols.h
index b58a4add01..ef2a37f3aa 100644
--- a/src/plugins/cpptools/cpplocalsymbols.h
+++ b/src/plugins/cpptools/cpplocalsymbols.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPLOCALSYMBOLS_H
-#define CPPLOCALSYMBOLS_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppsemanticinfo.h"
@@ -42,5 +41,3 @@ public:
 };
 
 } // namespace CppTools
-
-#endif // CPPLOCALSYMBOLS_H
diff --git a/src/plugins/cpptools/cpplocatordata.h b/src/plugins/cpptools/cpplocatordata.h
index 292fa650e0..393d8dc198 100644
--- a/src/plugins/cpptools/cpplocatordata.h
+++ b/src/plugins/cpptools/cpplocatordata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPLOCATORDATA_H
-#define CPPLOCATORDATA_H
+#pragma once
 
 #include <functional>
 #include <QHash>
@@ -84,5 +83,3 @@ private:
 };
 
 } // CppTools namespace
-
-#endif // CPPLOCATORDATA_H
diff --git a/src/plugins/cpptools/cpplocatorfilter.h b/src/plugins/cpptools/cpplocatorfilter.h
index 42f6badc6e..90716a5286 100644
--- a/src/plugins/cpptools/cpplocatorfilter.h
+++ b/src/plugins/cpptools/cpplocatorfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPLOCATORFILTER_H
-#define CPPLOCATORFILTER_H
+#pragma once
 
 #include "cpplocatordata.h"
 #include "searchsymbols.h"
@@ -57,5 +56,3 @@ protected:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPLOCATORFILTER_H
diff --git a/src/plugins/cpptools/cppmodelmanager.h b/src/plugins/cpptools/cppmodelmanager.h
index 41ec74ee67..b13f3f0bb1 100644
--- a/src/plugins/cpptools/cppmodelmanager.h
+++ b/src/plugins/cpptools/cppmodelmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPMODELMANAGER_H
-#define CPPMODELMANAGER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -225,5 +224,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPMODELMANAGER_H
diff --git a/src/plugins/cpptools/cppmodelmanagersupport.h b/src/plugins/cpptools/cppmodelmanagersupport.h
index 27fad98094..cfef02e1a0 100644
--- a/src/plugins/cpptools/cppmodelmanagersupport.h
+++ b/src/plugins/cpptools/cppmodelmanagersupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPMODELMANAGERSUPPORT_H
-#define CPPTOOLS_CPPMODELMANAGERSUPPORT_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -63,5 +62,3 @@ public:
 };
 
 } // CppTools namespace
-
-#endif // CPPTOOLS_CPPMODELMANAGERSUPPORT_H
diff --git a/src/plugins/cpptools/cppmodelmanagersupportinternal.h b/src/plugins/cpptools/cppmodelmanagersupportinternal.h
index 3aa9088515..0a2290f595 100644
--- a/src/plugins/cpptools/cppmodelmanagersupportinternal.h
+++ b/src/plugins/cpptools/cppmodelmanagersupportinternal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_INTERNAL_CPPMODELMANAGERSUPPORTINTERNAL_H
-#define CPPTOOLS_INTERNAL_CPPMODELMANAGERSUPPORTINTERNAL_H
+#pragma once
 
 #include "cppmodelmanagersupport.h"
 
@@ -60,5 +59,3 @@ public:
 
 } // Internal namespace
 } // CppTools namespace
-
-#endif // CPPTOOLS_INTERNAL_CPPMODELMANAGERSUPPORTINTERNAL_H
diff --git a/src/plugins/cpptools/cpppointerdeclarationformatter.h b/src/plugins/cpptools/cpppointerdeclarationformatter.h
index 773f139590..f1e3952709 100644
--- a/src/plugins/cpptools/cpppointerdeclarationformatter.h
+++ b/src/plugins/cpptools/cpppointerdeclarationformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPPOINTERDECLARATIONFORMATTER_H
-#define CPPPOINTERDECLARATIONFORMATTER_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cpprefactoringchanges.h"
@@ -120,5 +119,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPPOINTERDECLARATIONFORMATTER_H
diff --git a/src/plugins/cpptools/cppprojectfile.h b/src/plugins/cpptools/cppprojectfile.h
index 74539b5d8e..a4b47dee87 100644
--- a/src/plugins/cpptools/cppprojectfile.h
+++ b/src/plugins/cpptools/cppprojectfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPPROJECTFILE_H
-#define CPPTOOLS_CPPPROJECTFILE_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -66,5 +65,3 @@ public:
 QDebug operator<<(QDebug stream, const CppTools::ProjectFile &cxxFile);
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_CPPPROJECTFILE_H
diff --git a/src/plugins/cpptools/cppqtstyleindenter.h b/src/plugins/cpptools/cppqtstyleindenter.h
index eb3196043a..35b26d60ac 100644
--- a/src/plugins/cpptools/cppqtstyleindenter.h
+++ b/src/plugins/cpptools/cppqtstyleindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPQTSTYLEINDENTER_H
-#define CPPQTSTYLEINDENTER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 } // CppTools
-
-#endif // CPPQTSTYLEINDENTER_H
diff --git a/src/plugins/cpptools/cpprefactoringchanges.h b/src/plugins/cpptools/cpprefactoringchanges.h
index 7aeecca9f7..af14598c50 100644
--- a/src/plugins/cpptools/cpprefactoringchanges.h
+++ b/src/plugins/cpptools/cpprefactoringchanges.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPREFACTORINGCHANGES_H
-#define CPPREFACTORINGCHANGES_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -98,5 +97,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPREFACTORINGCHANGES_H
diff --git a/src/plugins/cpptools/cppselectionchanger.h b/src/plugins/cpptools/cppselectionchanger.h
index 8e64fbdee4..1a29989df2 100644
--- a/src/plugins/cpptools/cppselectionchanger.h
+++ b/src/plugins/cpptools/cppselectionchanger.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPSELECTIONCHANGER_H
-#define CPPSELECTIONCHANGER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -124,5 +123,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPSELECTIONCHANGER_H
diff --git a/src/plugins/cpptools/cppsemanticinfo.h b/src/plugins/cpptools/cppsemanticinfo.h
index d3391e9dc4..c9540f2d3c 100644
--- a/src/plugins/cpptools/cppsemanticinfo.h
+++ b/src/plugins/cpptools/cppsemanticinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPSEMANTICINFO_H
-#define CPPSEMANTICINFO_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -81,5 +80,3 @@ public:
 };
 
 } // namespace CppTools
-
-#endif // CPPSEMANTICINFO_H
diff --git a/src/plugins/cpptools/cppsemanticinfoupdater.h b/src/plugins/cpptools/cppsemanticinfoupdater.h
index 8ecba4a2df..944ffe07d5 100644
--- a/src/plugins/cpptools/cppsemanticinfoupdater.h
+++ b/src/plugins/cpptools/cppsemanticinfoupdater.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPSEMANTICINFOUPDATER_H
-#define CPPSEMANTICINFOUPDATER_H
+#pragma once
 
 #include "cppsemanticinfo.h"
 
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPSEMANTICINFOUPDATER_H
diff --git a/src/plugins/cpptools/cppsourceprocessertesthelper.h b/src/plugins/cpptools/cppsourceprocessertesthelper.h
index 390e1a25d7..5f2d995f4a 100644
--- a/src/plugins/cpptools/cppsourceprocessertesthelper.h
+++ b/src/plugins/cpptools/cppsourceprocessertesthelper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPPSOURCEPROCESSERTESTHELPER_H
-#define CPPPSOURCEPROCESSERTESTHELPER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -50,5 +49,3 @@ public:
 
 } // namespace Tests
 } // namespace CppTools
-
-#endif // CPPPSOURCEPROCESSERTESTHELPER_H
diff --git a/src/plugins/cpptools/cppsourceprocessor.h b/src/plugins/cpptools/cppsourceprocessor.h
index 39b612c157..ec1b9ef775 100644
--- a/src/plugins/cpptools/cppsourceprocessor.h
+++ b/src/plugins/cpptools/cppsourceprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPSOURCEPROCESSOR_H
-#define CPPSOURCEPROCESSOR_H
+#pragma once
 
 #include "cppmodelmanager.h"
 #include "cppworkingcopy.h"
@@ -124,5 +123,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPSOURCEPROCESSOR_H
diff --git a/src/plugins/cpptools/cpptools_global.h b/src/plugins/cpptools/cpptools_global.h
index 322d94cb9d..4396b11cb2 100644
--- a/src/plugins/cpptools/cpptools_global.h
+++ b/src/plugins/cpptools/cpptools_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_GLOBAL_H
-#define CPPTOOLS_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -35,5 +34,3 @@
 #else
 #  define CPPTOOLS_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // CPPTOOLS_GLOBAL_H
diff --git a/src/plugins/cpptools/cpptoolsbridge.h b/src/plugins/cpptools/cpptoolsbridge.h
index ba35177850..ef5d12ed81 100644
--- a/src/plugins/cpptools/cpptoolsbridge.h
+++ b/src/plugins/cpptools/cpptoolsbridge.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPTOOLSBRIDGE_H
-#define CPPTOOLS_CPPTOOLSBRIDGE_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_CPPTOOLSBRIDGE_H
diff --git a/src/plugins/cpptools/cpptoolsbridgeinterface.h b/src/plugins/cpptools/cpptoolsbridgeinterface.h
index ef9ad38696..c62ee41996 100644
--- a/src/plugins/cpptools/cpptoolsbridgeinterface.h
+++ b/src/plugins/cpptools/cpptoolsbridgeinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLSBRIDGEINTERFACE_H
-#define CPPTOOLSBRIDGEINTERFACE_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -53,5 +52,3 @@ public:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLSBRIDGEINTERFACE_H
diff --git a/src/plugins/cpptools/cpptoolsbridgeqtcreatorimplementation.h b/src/plugins/cpptools/cpptoolsbridgeqtcreatorimplementation.h
index 88a657dfa5..5570523067 100644
--- a/src/plugins/cpptools/cpptoolsbridgeqtcreatorimplementation.h
+++ b/src/plugins/cpptools/cpptoolsbridgeqtcreatorimplementation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_CPPTOOLSBRIDGEQTCREATORIMPLEMENTATION_H
-#define CPPTOOLS_CPPTOOLSBRIDGEQTCREATORIMPLEMENTATION_H
+#pragma once
 
 #include "cpptoolsbridgeinterface.h"
 
@@ -44,5 +43,3 @@ public:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPTOOLS_CPPTOOLSBRIDGEQTCREATORIMPLEMENTATION_H
diff --git a/src/plugins/cpptools/cpptoolsconstants.h b/src/plugins/cpptools/cpptoolsconstants.h
index 5d2d06201c..dbd32dc527 100644
--- a/src/plugins/cpptools/cpptoolsconstants.h
+++ b/src/plugins/cpptools/cpptoolsconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLSCONSTANTS_H
-#define CPPTOOLSCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -70,5 +69,3 @@ const char CPP_SETTINGS_NAME[] = QT_TRANSLATE_NOOP("CppTools", "C++");
 
 } // namespace Constants
 } // namespace CppTools
-
-#endif // CPPTOOLSCONSTANTS_H
diff --git a/src/plugins/cpptools/cpptoolsjsextension.h b/src/plugins/cpptools/cpptoolsjsextension.h
index 9d0d16ebe8..f009c6c259 100644
--- a/src/plugins/cpptools/cpptoolsjsextension.h
+++ b/src/plugins/cpptools/cpptoolsjsextension.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLSJSEXTENSION_H
-#define CPPTOOLSJSEXTENSION_H
+#pragma once
 
 #include <QObject>
 
@@ -61,5 +60,3 @@ public:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPTOOLSJSEXTENSION_H
diff --git a/src/plugins/cpptools/cpptoolsplugin.h b/src/plugins/cpptools/cpptoolsplugin.h
index b0f86095d1..c26df354f4 100644
--- a/src/plugins/cpptools/cpptoolsplugin.h
+++ b/src/plugins/cpptools/cpptoolsplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_H
-#define CPPTOOLS_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "stringtable.h"
@@ -185,5 +184,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // CPPTOOLS_H
diff --git a/src/plugins/cpptools/cpptoolsreuse.h b/src/plugins/cpptools/cpptoolsreuse.h
index 22549144c2..cdb86bd565 100644
--- a/src/plugins/cpptools/cpptoolsreuse.h
+++ b/src/plugins/cpptools/cpptoolsreuse.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLSREUSE_H
-#define CPPTOOLSREUSE_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -77,5 +76,3 @@ int fileSizeLimit();
 bool skipFileDueToSizeLimit(const QFileInfo &fileInfo, int limitInMB = fileSizeLimit());
 
 } // CppTools
-
-#endif // CPPTOOLSREUSE_H
diff --git a/src/plugins/cpptools/cpptoolssettings.h b/src/plugins/cpptools/cpptoolssettings.h
index efcb74fbfe..bb5234f2dc 100644
--- a/src/plugins/cpptools/cpptoolssettings.h
+++ b/src/plugins/cpptools/cpptoolssettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLSSETTINGS_H
-#define CPPTOOLSSETTINGS_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLSSETTINGS_H
diff --git a/src/plugins/cpptools/cpptoolstestcase.h b/src/plugins/cpptools/cpptoolstestcase.h
index 98b03047ed..0d9369001c 100644
--- a/src/plugins/cpptools/cpptoolstestcase.h
+++ b/src/plugins/cpptools/cpptoolstestcase.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLSTESTCASE_H
-#define CPPTOOLSTESTCASE_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -186,5 +185,3 @@ public:
 
 } // namespace Tests
 } // namespace CppTools
-
-#endif // CPPTOOLSTESTCASE_H
diff --git a/src/plugins/cpptools/cppworkingcopy.h b/src/plugins/cpptools/cppworkingcopy.h
index 5efd71773f..6c370d5b68 100644
--- a/src/plugins/cpptools/cppworkingcopy.h
+++ b/src/plugins/cpptools/cppworkingcopy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPWORKINGCOPY_H
-#define CPPWORKINGCOPY_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -83,5 +82,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPWORKINGCOPY_H
diff --git a/src/plugins/cpptools/doxygengenerator.h b/src/plugins/cpptools/doxygengenerator.h
index c816ebfcb9..051ecfbd3e 100644
--- a/src/plugins/cpptools/doxygengenerator.h
+++ b/src/plugins/cpptools/doxygengenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DOXYGENGENERATOR_H
-#define DOXYGENGENERATOR_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -95,5 +94,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // DOXYGENGENERATOR_H
diff --git a/src/plugins/cpptools/editordocumenthandle.h b/src/plugins/cpptools/editordocumenthandle.h
index 96bbcd360c..2e7d4784c3 100644
--- a/src/plugins/cpptools/editordocumenthandle.h
+++ b/src/plugins/cpptools/editordocumenthandle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORDOCUMENTHANDLE_H
-#define EDITORDOCUMENTHANDLE_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "senddocumenttracker.h"
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // EDITORDOCUMENTHANDLE_H
diff --git a/src/plugins/cpptools/functionutils.h b/src/plugins/cpptools/functionutils.h
index 6a5d6b7656..312492a873 100644
--- a/src/plugins/cpptools/functionutils.h
+++ b/src/plugins/cpptools/functionutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FUNCTIONUTILS_H
-#define FUNCTIONUTILS_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -60,5 +59,3 @@ public:
 };
 
 } // namespace CppTools
-
-#endif // FUNCTIONUTILS_H
diff --git a/src/plugins/cpptools/includeutils.h b/src/plugins/cpptools/includeutils.h
index d1587be1bd..5375877ded 100644
--- a/src/plugins/cpptools/includeutils.h
+++ b/src/plugins/cpptools/includeutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INCLUDEUTILS_H
-#define INCLUDEUTILS_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -108,5 +107,3 @@ private:
 
 } // namespace IncludeUtils
 } // namespace CppTools
-
-#endif // INCLUDEUTILS_H
diff --git a/src/plugins/cpptools/indexitem.h b/src/plugins/cpptools/indexitem.h
index 3b0aa6d3a3..edfa9a75fa 100644
--- a/src/plugins/cpptools/indexitem.h
+++ b/src/plugins/cpptools/indexitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_INDEXITEM_H
-#define CPPTOOLS_INDEXITEM_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -133,5 +132,3 @@ private:
 } // CppTools namespace
 
 Q_DECLARE_METATYPE(CppTools::IndexItem::Ptr)
-
-#endif // CPPTOOLS_INDEXITEM_H
diff --git a/src/plugins/cpptools/insertionpointlocator.h b/src/plugins/cpptools/insertionpointlocator.h
index 9eb22a89ca..434af1f0e7 100644
--- a/src/plugins/cpptools/insertionpointlocator.h
+++ b/src/plugins/cpptools/insertionpointlocator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INSERTIONPOINTLOCATOR_H
-#define INSERTIONPOINTLOCATOR_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cpprefactoringchanges.h"
@@ -103,5 +102,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // INSERTIONPOINTLOCATOR_H
diff --git a/src/plugins/cpptools/modelmanagertesthelper.h b/src/plugins/cpptools/modelmanagertesthelper.h
index 86a331252e..f7ef4ec189 100644
--- a/src/plugins/cpptools/modelmanagertesthelper.h
+++ b/src/plugins/cpptools/modelmanagertesthelper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_INTERNAL_MODELMANAGERTESTHELPER_H
-#define CPPTOOLS_INTERNAL_MODELMANAGERTESTHELPER_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppmodelmanager.h"
@@ -90,5 +89,3 @@ private:
 
 } // namespace Tests
 } // namespace CppTools
-
-#endif // CPPTOOLS_INTERNAL_MODELMANAGERTESTHELPER_H
diff --git a/src/plugins/cpptools/projectinfo.h b/src/plugins/cpptools/projectinfo.h
index d589599707..4b21ead60e 100644
--- a/src/plugins/cpptools/projectinfo.h
+++ b/src/plugins/cpptools/projectinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_PROJECTINFO_H
-#define CPPTOOLS_PROJECTINFO_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -76,5 +75,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_PROJECTINFO_H
diff --git a/src/plugins/cpptools/projectpart.h b/src/plugins/cpptools/projectpart.h
index a9875ee69d..8f1b5b2c1f 100644
--- a/src/plugins/cpptools/projectpart.h
+++ b/src/plugins/cpptools/projectpart.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_PROJECTPART_H
-#define CPPTOOLS_PROJECTPART_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -115,5 +114,3 @@ public: // fields
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_PROJECTPART_H
diff --git a/src/plugins/cpptools/projectpartbuilder.h b/src/plugins/cpptools/projectpartbuilder.h
index a922b48d4a..91eaca910f 100644
--- a/src/plugins/cpptools/projectpartbuilder.h
+++ b/src/plugins/cpptools/projectpartbuilder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_PROJECTPARTBUILDER_H
-#define CPPTOOLS_PROJECTPARTBUILDER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_PROJECTPARTBUILDER_H
diff --git a/src/plugins/cpptools/projectpartheaderpath.h b/src/plugins/cpptools/projectpartheaderpath.h
index d12e5bdf72..fb554580e5 100644
--- a/src/plugins/cpptools/projectpartheaderpath.h
+++ b/src/plugins/cpptools/projectpartheaderpath.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROJECTPARTHEADERPATH_H
-#define PROJECTPARTHEADERPATH_H
+#pragma once
 
 #include <QVector>
 
@@ -79,4 +78,3 @@ inline uint qHash(const ProjectPartHeaderPath &key, uint seed = 0)
     return ((qHash(key.path) << 2) | key.type) ^ seed;
 }
 } // namespace CppTools
-#endif // PROJECTPARTHEADERPATH_H
diff --git a/src/plugins/cpptools/searchsymbols.h b/src/plugins/cpptools/searchsymbols.h
index e0c669bb07..cb4c7dea31 100644
--- a/src/plugins/cpptools/searchsymbols.h
+++ b/src/plugins/cpptools/searchsymbols.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHSYMBOLS_H
-#define SEARCHSYMBOLS_H
+#pragma once
 
 #include "cpptools_global.h"
 #include "cppindexingsupport.h"
@@ -116,5 +115,3 @@ private:
 } // namespace CppTools
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(CppTools::SearchSymbols::SymbolTypes)
-
-#endif // SEARCHSYMBOLS_H
diff --git a/src/plugins/cpptools/semantichighlighter.h b/src/plugins/cpptools/semantichighlighter.h
index f69a8d73c7..6305da03d7 100644
--- a/src/plugins/cpptools/semantichighlighter.h
+++ b/src/plugins/cpptools/semantichighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEMANTICHIGHLIGHTER_H
-#define SEMANTICHIGHLIGHTER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -92,5 +91,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // SEMANTICHIGHLIGHTER_H
diff --git a/src/plugins/cpptools/senddocumenttracker.h b/src/plugins/cpptools/senddocumenttracker.h
index 70ada43e53..be84a8b16a 100644
--- a/src/plugins/cpptools/senddocumenttracker.h
+++ b/src/plugins/cpptools/senddocumenttracker.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_SENDDOCUMENTTRACKER_H
-#define CPPTOOLS_SENDDOCUMENTTRACKER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // CPPTOOLS_SENDDOCUMENTTRACKER_H
diff --git a/src/plugins/cpptools/stringtable.h b/src/plugins/cpptools/stringtable.h
index c1ee1689f1..62ad48b138 100644
--- a/src/plugins/cpptools/stringtable.h
+++ b/src/plugins/cpptools/stringtable.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STRINGTABLE_H
-#define STRINGTABLE_H
+#pragma once
 
 #include <QAtomicInt>
 #include <QMutex>
@@ -69,5 +68,3 @@ private:
 
 } // Internal namespace
 } // CppTools namespace
-
-#endif // STRINGTABLE_H
diff --git a/src/plugins/cpptools/symbolfinder.h b/src/plugins/cpptools/symbolfinder.h
index b463a1287d..a8cf2e6bb7 100644
--- a/src/plugins/cpptools/symbolfinder.h
+++ b/src/plugins/cpptools/symbolfinder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLFINDER_H
-#define SYMBOLFINDER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -84,6 +83,3 @@ private:
 };
 
 } // namespace CppTools
-
-#endif // SYMBOLFINDER_H
-
diff --git a/src/plugins/cpptools/symbolsfindfilter.h b/src/plugins/cpptools/symbolsfindfilter.h
index 837aabca2f..52b2cde5d9 100644
--- a/src/plugins/cpptools/symbolsfindfilter.h
+++ b/src/plugins/cpptools/symbolsfindfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLSFINDFILTER_H
-#define SYMBOLSFINDFILTER_H
+#pragma once
 
 #include "searchsymbols.h"
 
@@ -123,5 +122,3 @@ private:
 
 } // Internal
 } // CppTools
-
-#endif // SYMBOLSFINDFILTER_H
diff --git a/src/plugins/cpptools/typehierarchybuilder.h b/src/plugins/cpptools/typehierarchybuilder.h
index 00ed68596f..055794687e 100644
--- a/src/plugins/cpptools/typehierarchybuilder.h
+++ b/src/plugins/cpptools/typehierarchybuilder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTOOLS_TYPEHIERARCHYBUILDER_H
-#define CPPTOOLS_TYPEHIERARCHYBUILDER_H
+#pragma once
 
 #include "cpptools_global.h"
 
@@ -77,5 +76,3 @@ private:
 };
 
 } // CppTools
-
-#endif // CPPTOOLS_TYPEHIERARCHYBUILDER_H
diff --git a/src/plugins/debugger/analyzer/analyzerconstants.h b/src/plugins/debugger/analyzer/analyzerconstants.h
index c2554f42c2..4260d718c8 100644
--- a/src/plugins/debugger/analyzer/analyzerconstants.h
+++ b/src/plugins/debugger/analyzer/analyzerconstants.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERCONSTANTS_H
-#define ANALYZERCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -45,5 +44,3 @@ const char ANALYZERTASK_ID[] = "Analyzer.TaskId";
 
 } // namespace Constants
 } // namespace Debugger
-
-#endif // ANALYZERCONSTANTS_H
diff --git a/src/plugins/debugger/analyzer/analyzericons.h b/src/plugins/debugger/analyzer/analyzericons.h
index f9f4a69056..c423b27f6d 100644
--- a/src/plugins/debugger/analyzer/analyzericons.h
+++ b/src/plugins/debugger/analyzer/analyzericons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERICONS_H
-#define ANALYZERICONS_H
+#pragma once
 
 #include <utils/icon.h>
 
@@ -43,5 +42,3 @@ const Utils::Icon MODE_ANALYZE_FLAT_ACTIVE({
 
 } // namespace Icons
 } // namespace Debugger
-
-#endif // ANALYZERICONS_H
diff --git a/src/plugins/debugger/analyzer/analyzermanager.h b/src/plugins/debugger/analyzer/analyzermanager.h
index 70209ea291..c853418d89 100644
--- a/src/plugins/debugger/analyzer/analyzermanager.h
+++ b/src/plugins/debugger/analyzer/analyzermanager.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERMANAGER_H
-#define ANALYZERMANAGER_H
+#pragma once
 
 #include "analyzerconstants.h"
 
@@ -150,5 +149,3 @@ DEBUGGER_EXPORT AnalyzerRunControl *createAnalyzerRunControl(
     ProjectExplorer::RunConfiguration *runConfiguration, Core::Id runMode);
 
 } // namespace Debugger
-
-#endif // ANALYZERMANAGER_H
diff --git a/src/plugins/debugger/analyzer/analyzerrunconfigwidget.h b/src/plugins/debugger/analyzer/analyzerrunconfigwidget.h
index ad4ba8cc2d..23d028ff95 100644
--- a/src/plugins/debugger/analyzer/analyzerrunconfigwidget.h
+++ b/src/plugins/debugger/analyzer/analyzerrunconfigwidget.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERRUNCONFIGWIDGET_H
-#define ANALYZERRUNCONFIGWIDGET_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // ANALYZERRUNCONFIGWIDGET_H
diff --git a/src/plugins/debugger/analyzer/analyzerruncontrol.h b/src/plugins/debugger/analyzer/analyzerruncontrol.h
index a919a7f363..12b5e4c6f0 100644
--- a/src/plugins/debugger/analyzer/analyzerruncontrol.h
+++ b/src/plugins/debugger/analyzer/analyzerruncontrol.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERRUNCONTROL_H
-#define ANALYZERRUNCONTROL_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // ANALYZERRUNCONTROL_H
diff --git a/src/plugins/debugger/analyzer/analyzerstartparameters.h b/src/plugins/debugger/analyzer/analyzerstartparameters.h
index 73226c0e33..7f5d439d9b 100644
--- a/src/plugins/debugger/analyzer/analyzerstartparameters.h
+++ b/src/plugins/debugger/analyzer/analyzerstartparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERSTARTPARAMETERS_H
-#define ANALYZERSTARTPARAMETERS_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -47,5 +46,3 @@ public:
 DEBUGGER_EXPORT bool operator==(const AnalyzerConnection &c1, const AnalyzerConnection &c2);
 
 } // namespace Debugger
-
-#endif // ANALYZERSTARTPARAMETERS_H
diff --git a/src/plugins/debugger/analyzer/analyzerutils.h b/src/plugins/debugger/analyzer/analyzerutils.h
index 65f3de5f30..1c5327d4fe 100644
--- a/src/plugins/debugger/analyzer/analyzerutils.h
+++ b/src/plugins/debugger/analyzer/analyzerutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERUTILS_H
-#define ANALYZERUTILS_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -38,5 +37,3 @@ namespace AnalyzerUtils
     DEBUGGER_EXPORT void logToIssuesPane(ProjectExplorer::Task::TaskType type,
                                          const QString &message);
 }
-
-#endif // ANALYZERUTILS_H
diff --git a/src/plugins/debugger/analyzer/detailederrorview.h b/src/plugins/debugger/analyzer/detailederrorview.h
index ab141ad57e..c6d483c77a 100644
--- a/src/plugins/debugger/analyzer/detailederrorview.h
+++ b/src/plugins/debugger/analyzer/detailederrorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DETAILEDERRORVIEW_H
-#define DETAILEDERRORVIEW_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // DETAILEDERRORVIEW_H
diff --git a/src/plugins/debugger/analyzer/diagnosticlocation.h b/src/plugins/debugger/analyzer/diagnosticlocation.h
index 61fdbe2298..31f9036f44 100644
--- a/src/plugins/debugger/analyzer/diagnosticlocation.h
+++ b/src/plugins/debugger/analyzer/diagnosticlocation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZERDIAGNOSTIC_H
-#define ANALYZERDIAGNOSTIC_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -55,6 +54,3 @@ DEBUGGER_EXPORT QDebug operator<<(QDebug dbg, const DiagnosticLocation &location
 } // namespace Debugger
 
 Q_DECLARE_METATYPE(Debugger::DiagnosticLocation)
-
-#endif // Include guard.
-
diff --git a/src/plugins/debugger/analyzer/startremotedialog.h b/src/plugins/debugger/analyzer/startremotedialog.h
index ff559a51bf..b7e1c33787 100644
--- a/src/plugins/debugger/analyzer/startremotedialog.h
+++ b/src/plugins/debugger/analyzer/startremotedialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STARTREMOTEDIALOG_H
-#define STARTREMOTEDIALOG_H
+#pragma once
 
 #include <debugger/debugger_global.h>
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // STARTREMOTEDIALOG_H
diff --git a/src/plugins/debugger/breakhandler.h b/src/plugins/debugger/breakhandler.h
index 763db17ce5..922e6fee71 100644
--- a/src/plugins/debugger/breakhandler.h
+++ b/src/plugins/debugger/breakhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_BREAKHANDLER_H
-#define DEBUGGER_BREAKHANDLER_H
+#pragma once
 
 #include "breakpoint.h"
 #include "debuggerprotocol.h"
@@ -233,5 +232,3 @@ private:
 } // namespace Debugger
 
 Q_DECLARE_METATYPE(Debugger::Internal::Breakpoint)
-
-#endif // DEBUGGER_BREAKHANDLER_H
diff --git a/src/plugins/debugger/breakpoint.h b/src/plugins/debugger/breakpoint.h
index 509f1660c6..deabf6b028 100644
--- a/src/plugins/debugger/breakpoint.h
+++ b/src/plugins/debugger/breakpoint.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_BREAKPOINT_H
-#define DEBUGGER_BREAKPOINT_H
+#pragma once
 
 #include <QMetaType>
 #include <QString>
@@ -232,6 +231,3 @@ inline uint qHash(const Debugger::Internal::BreakpointModelId &id)
 
 Q_DECLARE_METATYPE(Debugger::Internal::BreakpointModelId)
 Q_DECLARE_METATYPE(Debugger::Internal::BreakpointResponseId)
-
-
-#endif // DEBUGGER_BREAKPOINT_H
diff --git a/src/plugins/debugger/breakwindow.h b/src/plugins/debugger/breakwindow.h
index 1af4d25c2a..7feba0c14f 100644
--- a/src/plugins/debugger/breakwindow.h
+++ b/src/plugins/debugger/breakwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_BREAKWINDOW_H
-#define DEBUGGER_BREAKWINDOW_H
+#pragma once
 
 #include "breakhandler.h"
 #include <utils/basetreeview.h>
@@ -58,6 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_BREAKWINDOW
-
diff --git a/src/plugins/debugger/cdb/bytearrayinputstream.h b/src/plugins/debugger/cdb/bytearrayinputstream.h
index 2468d361b8..2d2a0f5083 100644
--- a/src/plugins/debugger/cdb/bytearrayinputstream.h
+++ b/src/plugins/debugger/cdb/bytearrayinputstream.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BYTEARRAYINPUTSTREAM_H
-#define BYTEARRAYINPUTSTREAM_H
+#pragma once
 
 #include <QString>
 
@@ -100,5 +99,3 @@ QByteArray simplify(const QByteArray &inIn);
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // BYTEARRAYINPUTSTREAM_H
diff --git a/src/plugins/debugger/cdb/cdbengine.h b/src/plugins/debugger/cdb/cdbengine.h
index 536157f9ce..fd5118e50f 100644
--- a/src/plugins/debugger/cdb/cdbengine.h
+++ b/src/plugins/debugger/cdb/cdbengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CDBENGINE_H
-#define DEBUGGER_CDBENGINE_H
+#pragma once
 
 #include <debugger/debuggerengine.h>
 #include <debugger/breakhandler.h>
@@ -265,5 +264,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_CDBENGINE_H
diff --git a/src/plugins/debugger/cdb/cdboptionspage.h b/src/plugins/debugger/cdb/cdboptionspage.h
index 8ad0d4017c..041c69198d 100644
--- a/src/plugins/debugger/cdb/cdboptionspage.h
+++ b/src/plugins/debugger/cdb/cdboptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CDBOPTIONSPAGE_H
-#define CDBOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <utils/savedaction.h>
@@ -128,5 +127,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // CDBOPTIONSPAGE_H
diff --git a/src/plugins/debugger/cdb/cdbparsehelpers.h b/src/plugins/debugger/cdb/cdbparsehelpers.h
index 7bd4322ea6..ebed376db5 100644
--- a/src/plugins/debugger/cdb/cdbparsehelpers.h
+++ b/src/plugins/debugger/cdb/cdbparsehelpers.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CDBPARSEHELPERS_H
-#define CDBPARSEHELPERS_H
+#pragma once
 
 #include <debugger/breakpoint.h>
 
@@ -98,5 +97,3 @@ QDebug operator<<(QDebug s, const WinException &e);
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // CDBPARSEHELPERS_H
diff --git a/src/plugins/debugger/commonoptionspage.h b/src/plugins/debugger/commonoptionspage.h
index 8394fb91db..05f4a120fa 100644
--- a/src/plugins/debugger/commonoptionspage.h
+++ b/src/plugins/debugger/commonoptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_COMMONOPTIONSPAGE_H
-#define DEBUGGER_COMMONOPTIONSPAGE_H
+#pragma once
 
 #include "debuggersourcepathmappingwidget.h"
 
@@ -99,5 +98,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_COMMONOPTIONSPAGE_H
diff --git a/src/plugins/debugger/console/console.h b/src/plugins/debugger/console/console.h
index e6a16ba950..962df2691f 100644
--- a/src/plugins/debugger/console/console.h
+++ b/src/plugins/debugger/console/console.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CONSOLE_H
-#define DEBUGGER_CONSOLE_H
+#pragma once
 
 #include "consoleitem.h"
 
@@ -103,5 +102,3 @@ Console *debuggerConsole();
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_CONSOLE_H
diff --git a/src/plugins/debugger/console/consoleedit.h b/src/plugins/debugger/console/consoleedit.h
index 73691f30fe..b27348f6d9 100644
--- a/src/plugins/debugger/console/consoleedit.h
+++ b/src/plugins/debugger/console/consoleedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CONSOLEEDIT_H
-#define DEBUGGER_CONSOLEEDIT_H
+#pragma once
 
 #include <QModelIndex>
 #include <QString>
@@ -60,5 +59,3 @@ private:
 
 } // Debugger
 } // Internal
-
-#endif // DEBUGGER_CONSOLEEDIT_H
diff --git a/src/plugins/debugger/console/consoleitem.h b/src/plugins/debugger/console/consoleitem.h
index 3567d35f70..0fd530d3fd 100644
--- a/src/plugins/debugger/console/consoleitem.h
+++ b/src/plugins/debugger/console/consoleitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONSOLEITEM_H
-#define CONSOLEITEM_H
+#pragma once
 
 #include <utils/treemodel.h>
 
@@ -82,5 +81,3 @@ private:
 
 } // Internal
 } // Debugger
-
-#endif // CONSOLEITEM_H
diff --git a/src/plugins/debugger/console/consoleitemdelegate.h b/src/plugins/debugger/console/consoleitemdelegate.h
index 114f6ef596..2016a38647 100644
--- a/src/plugins/debugger/console/consoleitemdelegate.h
+++ b/src/plugins/debugger/console/consoleitemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CONSOLEITEMDELEGATE_H
-#define DEBUGGER_CONSOLEITEMDELEGATE_H
+#pragma once
 
 #include "consoleitemmodel.h"
 #include "console.h"
@@ -173,5 +172,3 @@ public:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_CONSOLEITEMDELEGATE_H
diff --git a/src/plugins/debugger/console/consoleitemmodel.h b/src/plugins/debugger/console/consoleitemmodel.h
index d5a2a98bfc..c0c7c8485b 100644
--- a/src/plugins/debugger/console/consoleitemmodel.h
+++ b/src/plugins/debugger/console/consoleitemmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CONSOLEITEMMODEL_H
-#define DEBUGGER_CONSOLEITEMMODEL_H
+#pragma once
 
 #include "consoleitem.h"
 #include <utils/treemodel.h>
@@ -64,5 +63,3 @@ private:
 
 } // Internal
 } // Debugger
-
-#endif // DEBUGGER_CONSOLEITEMMODEL_H
diff --git a/src/plugins/debugger/console/consoleproxymodel.h b/src/plugins/debugger/console/consoleproxymodel.h
index 5cc9975025..f02346f66c 100644
--- a/src/plugins/debugger/console/consoleproxymodel.h
+++ b/src/plugins/debugger/console/consoleproxymodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CONSOLEPROXYMODEL_H
-#define DEBUGGER_CONSOLEPROXYMODEL_H
+#pragma once
 
 #include "consoleitem.h"
 
@@ -62,5 +61,3 @@ private:
 
 } // Internal
 } // Debugger
-
-#endif // DEBUGGER_CONSOLEPROXYMODEL_H
diff --git a/src/plugins/debugger/console/consoleview.h b/src/plugins/debugger/console/consoleview.h
index 7b5a5b31fd..3aedd125e1 100644
--- a/src/plugins/debugger/console/consoleview.h
+++ b/src/plugins/debugger/console/consoleview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_CONSOLEVIEW_H
-#define DEBUGGER_CONSOLEVIEW_H
+#pragma once
 
 #include <utils/itemviews.h>
 
@@ -61,5 +60,3 @@ private:
 
 } // Internal
 } // Debugger
-
-#endif // DEBUGGER_CONSOLEVIEW_H
diff --git a/src/plugins/debugger/debugger_global.h b/src/plugins/debugger/debugger_global.h
index f19f63874f..fc1597cc82 100644
--- a/src/plugins/debugger/debugger_global.h
+++ b/src/plugins/debugger/debugger_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERGLOBAL_H
-#define DEBUGGERGLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,5 +32,3 @@
 #else
 #  define DEBUGGER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // DEBUGGERGLOBAL_H
diff --git a/src/plugins/debugger/debuggeractions.h b/src/plugins/debugger/debuggeractions.h
index 6c1a7100e3..b1f180c53c 100644
--- a/src/plugins/debugger/debuggeractions.h
+++ b/src/plugins/debugger/debuggeractions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_ACTIONS_H
-#define DEBUGGER_ACTIONS_H
+#pragma once
 
 #include <QObject>
 #include <QHash>
@@ -181,5 +180,3 @@ enum DebuggerActionCode
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_WATCHWINDOW_H
diff --git a/src/plugins/debugger/debuggerconstants.h b/src/plugins/debugger/debuggerconstants.h
index 5964860883..0cac2e2628 100644
--- a/src/plugins/debugger/debuggerconstants.h
+++ b/src/plugins/debugger/debuggerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERCONSTANTS_H
-#define DEBUGGERCONSTANTS_H
+#pragma once
 
 #include <QFlags>
 
@@ -213,5 +212,3 @@ enum DebuggerLanguage
 Q_DECLARE_FLAGS(DebuggerLanguages, DebuggerLanguage)
 
 } // namespace Debugger
-
-#endif // DEBUGGERCONSTANTS_H
diff --git a/src/plugins/debugger/debuggercore.h b/src/plugins/debugger/debuggercore.h
index 80e1f9b88a..2b5557f4fd 100644
--- a/src/plugins/debugger/debuggercore.h
+++ b/src/plugins/debugger/debuggercore.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERCORE_H
-#define DEBUGGERCORE_H
+#pragma once
 
 #include "debuggerconstants.h"
 
@@ -111,5 +110,3 @@ bool isReverseDebuggingEnabled();
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGERPLUGIN_H
diff --git a/src/plugins/debugger/debuggerdialogs.h b/src/plugins/debugger/debuggerdialogs.h
index 8b17bbddfc..6365c3baf5 100644
--- a/src/plugins/debugger/debuggerdialogs.h
+++ b/src/plugins/debugger/debuggerdialogs.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DIALOGS_H
-#define DEBUGGER_DIALOGS_H
+#pragma once
 
 #include "watchhandler.h"
 
@@ -192,5 +191,3 @@ private:
 
 } // namespace Debugger
 } // namespace Internal
-
-#endif // DEBUGGER_DIALOGS_H
diff --git a/src/plugins/debugger/debuggerengine.h b/src/plugins/debugger/debuggerengine.h
index 5923f44f7b..830ed08836 100644
--- a/src/plugins/debugger/debuggerengine.h
+++ b/src/plugins/debugger/debuggerengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERENGINE_H
-#define DEBUGGER_DEBUGGERENGINE_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -484,5 +483,3 @@ DebuggerRunControl *createAndScheduleRun(const DebuggerRunParameters &rp, const
 
 Q_DECLARE_METATYPE(Debugger::Internal::UpdateParameters)
 Q_DECLARE_METATYPE(Debugger::Internal::ContextData)
-
-#endif // DEBUGGER_DEBUGGERENGINE_H
diff --git a/src/plugins/debugger/debuggericons.h b/src/plugins/debugger/debuggericons.h
index 30eed3b782..10c77df10f 100644
--- a/src/plugins/debugger/debuggericons.h
+++ b/src/plugins/debugger/debuggericons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERICONS_H
-#define DEBUGGERICONS_H
+#pragma once
 
 #include <utils/icon.h>
 
@@ -90,5 +89,3 @@ const Utils::Icon MODE_DEBUGGER_FLAT_ACTIVE({
 
 } // namespace Icons
 } // namespace Debugger
-
-#endif // DEBUGGERICONS_H
diff --git a/src/plugins/debugger/debuggerinternalconstants.h b/src/plugins/debugger/debuggerinternalconstants.h
index 3b9f65977c..9ff0611cac 100644
--- a/src/plugins/debugger/debuggerinternalconstants.h
+++ b/src/plugins/debugger/debuggerinternalconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERINTERNALCONSTANTS_H
-#define DEBUGGERINTERNALCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -99,6 +98,3 @@ enum ModelRoles
 };
 
 } // namespace Debugger
-
-#endif // DEBUGGERINTERNALCONSTANTS_H
-
diff --git a/src/plugins/debugger/debuggeritem.h b/src/plugins/debugger/debuggeritem.h
index 2e0e6ea5af..e48b0108b5 100644
--- a/src/plugins/debugger/debuggeritem.h
+++ b/src/plugins/debugger/debuggeritem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERITEM_H
-#define DEBUGGER_DEBUGGERITEM_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -123,5 +122,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // DEBUGGER_DEBUGGERITEM_H
diff --git a/src/plugins/debugger/debuggeritemmanager.h b/src/plugins/debugger/debuggeritemmanager.h
index 620c097c40..c4a7101ec9 100644
--- a/src/plugins/debugger/debuggeritemmanager.h
+++ b/src/plugins/debugger/debuggeritemmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERITEMMANAGER_H
-#define DEBUGGER_DEBUGGERITEMMANAGER_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -72,5 +71,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // DEBUGGER_DEBUGGERITEMMANAGER_H
diff --git a/src/plugins/debugger/debuggerkitconfigwidget.h b/src/plugins/debugger/debuggerkitconfigwidget.h
index a6fd2a09e6..ff89d4e70d 100644
--- a/src/plugins/debugger/debuggerkitconfigwidget.h
+++ b/src/plugins/debugger/debuggerkitconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERKITCONFIGWIDGET_H
-#define DEBUGGER_DEBUGGERKITCONFIGWIDGET_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <projectexplorer/kitconfigwidget.h>
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_DEBUGGERKITCONFIGWIDGET_H
diff --git a/src/plugins/debugger/debuggerkitinformation.h b/src/plugins/debugger/debuggerkitinformation.h
index 5cc0498cd0..44af814954 100644
--- a/src/plugins/debugger/debuggerkitinformation.h
+++ b/src/plugins/debugger/debuggerkitinformation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERKITINFORMATION_H
-#define DEBUGGER_DEBUGGERKITINFORMATION_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -68,5 +67,3 @@ public:
 };
 
 } // namespace Debugger
-
-#endif // DEBUGGER_DEBUGGERKITINFORMATION_H
diff --git a/src/plugins/debugger/debuggermainwindow.h b/src/plugins/debugger/debuggermainwindow.h
index 3c7d221a59..c52870cf38 100644
--- a/src/plugins/debugger/debuggermainwindow.h
+++ b/src/plugins/debugger/debuggermainwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERMAINWINDOW_H
-#define DEBUGGERMAINWINDOW_H
+#pragma once
 
 #include "debugger_global.h"
 
@@ -145,5 +144,3 @@ private:
 };
 
 } // Utils
-
-#endif // DEBUGGERMAINWINDOW_H
diff --git a/src/plugins/debugger/debuggeroptionspage.h b/src/plugins/debugger/debuggeroptionspage.h
index d7ac28cd8f..804addf3df 100644
--- a/src/plugins/debugger/debuggeroptionspage.h
+++ b/src/plugins/debugger/debuggeroptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGEROPTIONSPAGE_H
-#define DEBUGGER_DEBUGGEROPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_DEBUGGEROPTIONSPAGE_H
diff --git a/src/plugins/debugger/debuggerplugin.h b/src/plugins/debugger/debuggerplugin.h
index 1d682b610d..5090960860 100644
--- a/src/plugins/debugger/debuggerplugin.h
+++ b/src/plugins/debugger/debuggerplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERPLUGIN_H
-#define DEBUGGERPLUGIN_H
+#pragma once
 
 #include "debugger_global.h"
 #include <extensionsystem/iplugin.h>
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGERPLUGIN_H
diff --git a/src/plugins/debugger/debuggerprotocol.h b/src/plugins/debugger/debuggerprotocol.h
index b5047a12cc..cc5c558a50 100644
--- a/src/plugins/debugger/debuggerprotocol.h
+++ b/src/plugins/debugger/debuggerprotocol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_PROTOCOL_H
-#define DEBUGGER_PROTOCOL_H
+#pragma once
 
 #include <QByteArray>
 #include <QList>
@@ -255,6 +254,3 @@ enum DebuggerDisplay
 
 } // namespace Internal
 } // namespace Debugger
-
-
-#endif // DEBUGGER_PROTOCOL_H
diff --git a/src/plugins/debugger/debuggerrunconfigurationaspect.h b/src/plugins/debugger/debuggerrunconfigurationaspect.h
index 07bf2da3c2..7e22838310 100644
--- a/src/plugins/debugger/debuggerrunconfigurationaspect.h
+++ b/src/plugins/debugger/debuggerrunconfigurationaspect.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERRUNCONFIGURATIONASPECT_H
-#define DEBUGGERRUNCONFIGURATIONASPECT_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // DEBUGGERRUNCONFIGURATIONASPECT_H
diff --git a/src/plugins/debugger/debuggerruncontrol.h b/src/plugins/debugger/debuggerruncontrol.h
index ebeaa378bb..d1c3488862 100644
--- a/src/plugins/debugger/debuggerruncontrol.h
+++ b/src/plugins/debugger/debuggerruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERRUNCONTROL_H
-#define DEBUGGERRUNCONTROL_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -92,5 +91,3 @@ private:
 };
 
 } // namespace Debugger
-
-#endif // DEBUGGERRUNCONTROL_H
diff --git a/src/plugins/debugger/debuggersourcepathmappingwidget.h b/src/plugins/debugger/debuggersourcepathmappingwidget.h
index fb0e7cecf7..0ae147b15b 100644
--- a/src/plugins/debugger/debuggersourcepathmappingwidget.h
+++ b/src/plugins/debugger/debuggersourcepathmappingwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERSOURCEPATHMAPPINGWIDGET_H
-#define DEBUGGERSOURCEPATHMAPPINGWIDGET_H
+#pragma once
 
 #include <QGroupBox>
 #include <QMap>
@@ -91,5 +90,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGERSOURCEPATHMAPPINGWIDGET_H
diff --git a/src/plugins/debugger/debuggerstartparameters.h b/src/plugins/debugger/debuggerstartparameters.h
index fafeabc56d..1dd708d377 100644
--- a/src/plugins/debugger/debuggerstartparameters.h
+++ b/src/plugins/debugger/debuggerstartparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERSTARTPARAMETERS_H
-#define DEBUGGER_DEBUGGERSTARTPARAMETERS_H
+#pragma once
 
 #include "debugger_global.h"
 #include "debuggerconstants.h"
@@ -110,6 +109,3 @@ public:
 
 Q_DECLARE_METATYPE(Debugger::RemoteSetupResult)
 Q_DECLARE_METATYPE(Debugger::DebuggerStartParameters)
-
-#endif // DEBUGGER_DEBUGGERSTARTPARAMETERS_H
-
diff --git a/src/plugins/debugger/debuggerstringutils.h b/src/plugins/debugger/debuggerstringutils.h
index 653bb739f2..11cf8f2aab 100644
--- a/src/plugins/debugger/debuggerstringutils.h
+++ b/src/plugins/debugger/debuggerstringutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGERSTRINGUTILS_H
-#define DEBUGGERSTRINGUTILS_H
+#pragma once
 
 #ifndef qdoc
 
@@ -43,5 +42,3 @@ inline QString _(const QByteArray &ba) { return QString::fromLatin1(ba, ba.size(
 } // namespace Debugger
 
 #endif // qdoc
-
-#endif // DEBUGGERSTRINGUTILS_H
diff --git a/src/plugins/debugger/debuggertooltipmanager.h b/src/plugins/debugger/debuggertooltipmanager.h
index 0b98fcd6a2..cc479d046a 100644
--- a/src/plugins/debugger/debuggertooltipmanager.h
+++ b/src/plugins/debugger/debuggertooltipmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DEBUGGERTOOLTIPMANAGER_H
-#define DEBUGGER_DEBUGGERTOOLTIPMANAGER_H
+#pragma once
 
 #include "debuggerconstants.h"
 
@@ -102,5 +101,3 @@ public slots:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_INTERNAL_DEBUGGERTOOLTIPMANAGER_H
diff --git a/src/plugins/debugger/disassembleragent.h b/src/plugins/debugger/disassembleragent.h
index 58f2b5717a..423c949ab6 100644
--- a/src/plugins/debugger/disassembleragent.h
+++ b/src/plugins/debugger/disassembleragent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DISASSEMBLERAGENT_H
-#define DEBUGGER_DISASSEMBLERAGENT_H
+#pragma once
 
 #include <QObject>
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_DISASSEMBLERAGENT_H
diff --git a/src/plugins/debugger/disassemblerlines.h b/src/plugins/debugger/disassemblerlines.h
index 71786db802..ff8586d429 100644
--- a/src/plugins/debugger/disassemblerlines.h
+++ b/src/plugins/debugger/disassemblerlines.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_DISASSEMBLERLINES_H
-#define DEBUGGER_DISASSEMBLERLINES_H
+#pragma once
 
 #include <QStringList>
 #include <QHash>
@@ -92,5 +91,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_DISASSEMBLERLINES_H
diff --git a/src/plugins/debugger/gdb/attachgdbadapter.h b/src/plugins/debugger/gdb/attachgdbadapter.h
index 23597bf017..412e4726d6 100644
--- a/src/plugins/debugger/gdb/attachgdbadapter.h
+++ b/src/plugins/debugger/gdb/attachgdbadapter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_ATTACHGDBADAPTER_H
-#define DEBUGGER_ATTACHGDBADAPTER_H
+#pragma once
 
 #include "gdbengine.h"
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_ATTACHDBADAPTER_H
diff --git a/src/plugins/debugger/gdb/coregdbadapter.h b/src/plugins/debugger/gdb/coregdbadapter.h
index a72dbd88dd..1e93fb968b 100644
--- a/src/plugins/debugger/gdb/coregdbadapter.h
+++ b/src/plugins/debugger/gdb/coregdbadapter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_COREGDBADAPTER_H
-#define DEBUGGER_COREGDBADAPTER_H
+#pragma once
 
 #include "gdbengine.h"
 
@@ -76,5 +75,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_COREDBADAPTER_H
diff --git a/src/plugins/debugger/gdb/gdbengine.h b/src/plugins/debugger/gdb/gdbengine.h
index afc1ac7de4..a336ccb272 100644
--- a/src/plugins/debugger/gdb/gdbengine.h
+++ b/src/plugins/debugger/gdb/gdbengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_GDBENGINE_H
-#define DEBUGGER_GDBENGINE_H
+#pragma once
 
 #include <debugger/debuggerengine.h>
 
@@ -465,5 +464,3 @@ protected:
 } // namespace Debugger
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(Debugger::Internal::GdbEngine::GdbCommandFlags)
-
-#endif // DEBUGGER_GDBENGINE_H
diff --git a/src/plugins/debugger/gdb/gdbplainengine.h b/src/plugins/debugger/gdb/gdbplainengine.h
index 86d79ebde6..ab1f809156 100644
--- a/src/plugins/debugger/gdb/gdbplainengine.h
+++ b/src/plugins/debugger/gdb/gdbplainengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GDBPLAINENGINE_H
-#define GDBPLAINENGINE_H
+#pragma once
 
 #include "gdbengine.h"
 #include <debugger/outputcollector.h>
@@ -60,5 +59,3 @@ private:
 
 } // namespace Debugger
 } // namespace Internal
-
-#endif // GDBPLAINENGINE_H
diff --git a/src/plugins/debugger/gdb/remotegdbserveradapter.h b/src/plugins/debugger/gdb/remotegdbserveradapter.h
index 95ccc52c98..ed69e5620a 100644
--- a/src/plugins/debugger/gdb/remotegdbserveradapter.h
+++ b/src/plugins/debugger/gdb/remotegdbserveradapter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTEGDBSERVERADAPTER_H
-#define REMOTEGDBSERVERADAPTER_H
+#pragma once
 
 #include "gdbengine.h"
 
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // REMOTEGDBSERVERADAPTER_H
diff --git a/src/plugins/debugger/gdb/startgdbserverdialog.h b/src/plugins/debugger/gdb/startgdbserverdialog.h
index 1660318100..df2630e4bc 100644
--- a/src/plugins/debugger/gdb/startgdbserverdialog.h
+++ b/src/plugins/debugger/gdb/startgdbserverdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STARTGDBSERVERDIALOG_H
-#define STARTGDBSERVERDIALOG_H
+#pragma once
 
 #include <QObject>
 
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // STARTGDBSERVERDIALOG_H
diff --git a/src/plugins/debugger/gdb/termgdbadapter.h b/src/plugins/debugger/gdb/termgdbadapter.h
index 125d4bfacc..17dd5a4eb9 100644
--- a/src/plugins/debugger/gdb/termgdbadapter.h
+++ b/src/plugins/debugger/gdb/termgdbadapter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_TERMGDBADAPTER_H
-#define DEBUGGER_TERMGDBADAPTER_H
+#pragma once
 
 #include "gdbengine.h"
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_TERMGDBADAPTER_H
diff --git a/src/plugins/debugger/imageviewer.h b/src/plugins/debugger/imageviewer.h
index da58eb85d5..ece5465486 100644
--- a/src/plugins/debugger/imageviewer.h
+++ b/src/plugins/debugger/imageviewer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEWER_H
-#define IMAGEVIEWER_H
+#pragma once
 
 #include <QWidget>
 
@@ -77,5 +76,3 @@ private:
     Data m_data;
     QString m_info;
 };
-
-#endif // IMAGEVIEWER_H
diff --git a/src/plugins/debugger/loadcoredialog.h b/src/plugins/debugger/loadcoredialog.h
index 7ba216b73b..bce0d75e41 100644
--- a/src/plugins/debugger/loadcoredialog.h
+++ b/src/plugins/debugger/loadcoredialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOADCOREDIALOG_H
-#define LOADCOREDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -74,5 +73,3 @@ private:
 
 } // namespace Debugger
 } // namespace Internal
-
-#endif // LOADCOREDIALOG_H
diff --git a/src/plugins/debugger/localsandexpressionswindow.h b/src/plugins/debugger/localsandexpressionswindow.h
index 05dacd4879..15294640d1 100644
--- a/src/plugins/debugger/localsandexpressionswindow.h
+++ b/src/plugins/debugger/localsandexpressionswindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCALSANDEXPRESSIONSWINDOW_H
-#define LOCALSANDEXPRESSIONSWINDOW_H
+#pragma once
 
 #include <QWidget>
 #include <QTimer>
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // LOCALSANDEXPRESSIONSWINDOW_H
diff --git a/src/plugins/debugger/logwindow.h b/src/plugins/debugger/logwindow.h
index 6d78adcabc..6f6e3d713e 100644
--- a/src/plugins/debugger/logwindow.h
+++ b/src/plugins/debugger/logwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_LOGWINDOW_H
-#define DEBUGGER_LOGWINDOW_H
+#pragma once
 
 #include "debuggerconstants.h"
 
@@ -90,6 +89,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_LOGWINDOW_H
-
diff --git a/src/plugins/debugger/memoryagent.h b/src/plugins/debugger/memoryagent.h
index dc4341eb42..b761eac4c8 100644
--- a/src/plugins/debugger/memoryagent.h
+++ b/src/plugins/debugger/memoryagent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_MEMORYAGENT_H
-#define DEBUGGER_MEMORYAGENT_H
+#pragma once
 
 #include "debuggerconstants.h"
 
@@ -116,5 +115,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_MEMORYAGENT_H
diff --git a/src/plugins/debugger/memoryview.h b/src/plugins/debugger/memoryview.h
index 307f1c53c9..45c5e0827e 100644
--- a/src/plugins/debugger/memoryview.h
+++ b/src/plugins/debugger/memoryview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_INTERNAL_MEMORYVIEW_H
-#define DEBUGGER_INTERNAL_MEMORYVIEW_H
+#pragma once
 
 #include <QWidget>
 
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_INTERNAL_MEMORYVIEW_H
diff --git a/src/plugins/debugger/moduleshandler.h b/src/plugins/debugger/moduleshandler.h
index 9feb8a6af3..004ddeb39b 100644
--- a/src/plugins/debugger/moduleshandler.h
+++ b/src/plugins/debugger/moduleshandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_MODULESHANDLER_H
-#define DEBUGGER_MODULESHANDLER_H
+#pragma once
 
 #include <utils/elfreader.h>
 #include <utils/treemodel.h>
@@ -136,5 +135,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_MODULESHANDLER_H
diff --git a/src/plugins/debugger/moduleswindow.h b/src/plugins/debugger/moduleswindow.h
index 0ce21d35bf..ac32c23f5f 100644
--- a/src/plugins/debugger/moduleswindow.h
+++ b/src/plugins/debugger/moduleswindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_MODULESWINDOW_H
-#define DEBUGGER_MODULESWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 
@@ -45,6 +44,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_MODULESWINDOW_H
-
diff --git a/src/plugins/debugger/namedemangler/demanglerexceptions.h b/src/plugins/debugger/namedemangler/demanglerexceptions.h
index 3b0b4a77c8..eb210c3f7d 100644
--- a/src/plugins/debugger/namedemangler/demanglerexceptions.h
+++ b/src/plugins/debugger/namedemangler/demanglerexceptions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEMANGLEREXCEPTIONS_H
-#define DEMANGLEREXCEPTIONS_H
+#pragma once
 
 #include <QtGlobal>
 #include <QSharedPointer>
@@ -75,5 +74,3 @@ template <typename T> QSharedPointer<T> demanglerCast(const QSharedPointer<Parse
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEMANGLEREXCEPTIONS_H
diff --git a/src/plugins/debugger/namedemangler/globalparsestate.h b/src/plugins/debugger/namedemangler/globalparsestate.h
index 3002d931a8..9794d57f7c 100644
--- a/src/plugins/debugger/namedemangler/globalparsestate.h
+++ b/src/plugins/debugger/namedemangler/globalparsestate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLOBAL_PARSE_STATE_H
-#define GLOBAL_PARSE_STATE_H
+#pragma once
 
 #include <QByteArray>
 #include <QSharedPointer>
@@ -68,5 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // GLOBAL_PARSE_STATE_H
diff --git a/src/plugins/debugger/namedemangler/namedemangler.h b/src/plugins/debugger/namedemangler/namedemangler.h
index 16ce555031..9e57e5fba9 100644
--- a/src/plugins/debugger/namedemangler/namedemangler.h
+++ b/src/plugins/debugger/namedemangler/namedemangler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAME_DEMANGLER_H
-#define NAME_DEMANGLER_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -70,5 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // Include guard.
diff --git a/src/plugins/debugger/namedemangler/parsetreenodes.h b/src/plugins/debugger/namedemangler/parsetreenodes.h
index 8b0bbadce5..782a06cce5 100644
--- a/src/plugins/debugger/namedemangler/parsetreenodes.h
+++ b/src/plugins/debugger/namedemangler/parsetreenodes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PARSETREENODES_H
-#define PARSETREENODES_H
+#pragma once
 
 #include "globalparsestate.h"
 
@@ -829,5 +828,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // PARSETREENODES_H
diff --git a/src/plugins/debugger/pdb/pdbengine.h b/src/plugins/debugger/pdb/pdbengine.h
index 60882e8189..f71f1911ba 100644
--- a/src/plugins/debugger/pdb/pdbengine.h
+++ b/src/plugins/debugger/pdb/pdbengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_PDBENGINE_H
-#define DEBUGGER_PDBENGINE_H
+#pragma once
 
 #include <debugger/debuggerengine.h>
 
@@ -123,5 +122,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_PDBENGINE_H
diff --git a/src/plugins/debugger/procinterrupt.h b/src/plugins/debugger/procinterrupt.h
index 4cfb9ff6b5..b1d71e6db9 100644
--- a/src/plugins/debugger/procinterrupt.h
+++ b/src/plugins/debugger/procinterrupt.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_PROCINTERRUPT_H
-#define DEBUGGER_PROCINTERRUPT_H
+#pragma once
 
 #include <QString>
 
@@ -36,5 +35,3 @@ bool interruptProcess(qint64 pID, int engineType, QString *errorMessage,
 
 } // Internal
 } // GdbDebugger
-
-#endif // DEBUGGER_PROCINTERRUPT_H
diff --git a/src/plugins/debugger/qml/interactiveinterpreter.h b/src/plugins/debugger/qml/interactiveinterpreter.h
index 95fa2b3db7..541e33a558 100644
--- a/src/plugins/debugger/qml/interactiveinterpreter.h
+++ b/src/plugins/debugger/qml/interactiveinterpreter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERACTIVEINTERPRETER_H
-#define INTERACTIVEINTERPRETER_H
+#pragma once
 
 #include <qmljs/parser/qmljslexer_p.h>
 #include <qmljs/parser/qmljsengine_p.h>
@@ -57,4 +56,3 @@ private:
 
 }
 }
-#endif // INTERACTIVEINTERPRETER_H
diff --git a/src/plugins/debugger/qml/qmlcppengine.h b/src/plugins/debugger/qml/qmlcppengine.h
index b45f38dbe1..e549a26206 100644
--- a/src/plugins/debugger/qml/qmlcppengine.h
+++ b/src/plugins/debugger/qml/qmlcppengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLCPPENGINE_H
-#define QMLCPPENGINE_H
+#pragma once
 
 #include <debugger/debuggerengine.h>
 
@@ -139,5 +138,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // QMLCPPENGINE_H
diff --git a/src/plugins/debugger/qml/qmlengine.h b/src/plugins/debugger/qml/qmlengine.h
index 2ace561a56..b81d4693e7 100644
--- a/src/plugins/debugger/qml/qmlengine.h
+++ b/src/plugins/debugger/qml/qmlengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLENGINE_H
-#define QMLENGINE_H
+#pragma once
 
 #include <debugger/debuggerengine.h>
 
@@ -150,5 +149,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // QMLENGINE_H
diff --git a/src/plugins/debugger/qml/qmlengineutils.h b/src/plugins/debugger/qml/qmlengineutils.h
index 46d0995176..abb6c4c103 100644
--- a/src/plugins/debugger/qml/qmlengineutils.h
+++ b/src/plugins/debugger/qml/qmlengineutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLENGINEUTILS_H
-#define QMLENGINEUTILS_H
+#pragma once
 
 #include <qmldebug/qdebugmessageclient.h>
 #include <qmldebug/qmloutputparser.h>
@@ -39,5 +38,3 @@ QStringList highlightExceptionCode(int lineNumber, const QString &filePath, cons
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // QMLENGINEUTILS_H
diff --git a/src/plugins/debugger/qml/qmlinspectoragent.h b/src/plugins/debugger/qml/qmlinspectoragent.h
index 611739b7b5..f8ed4e131e 100644
--- a/src/plugins/debugger/qml/qmlinspectoragent.h
+++ b/src/plugins/debugger/qml/qmlinspectoragent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLINSPECTORAGENT_H
-#define QMLINSPECTORAGENT_H
+#pragma once
 
 #include <QStack>
 #include <QPointer>
@@ -161,5 +160,3 @@ private:
 
 } // Internal
 } // Debugger
-
-#endif // QMLINSPECTORAGENT_H
diff --git a/src/plugins/debugger/qml/qmlv8debuggerclientconstants.h b/src/plugins/debugger/qml/qmlv8debuggerclientconstants.h
index 2eb60a454f..d3f03db8f3 100644
--- a/src/plugins/debugger/qml/qmlv8debuggerclientconstants.h
+++ b/src/plugins/debugger/qml/qmlv8debuggerclientconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLV8DEBUGGERCLIENTCONSTANTS_H
-#define QMLV8DEBUGGERCLIENTCONSTANTS_H
+#pragma once
 
 namespace Debugger {
 namespace Internal {
@@ -115,4 +114,3 @@ const char INTERNAL_FUNCTION[] = "(function(method) { "\
     "})";
 } //Internal
 } //Debugger
-#endif // QMLV8DEBUGGERCLIENTCONSTANTS_H
diff --git a/src/plugins/debugger/registerhandler.h b/src/plugins/debugger/registerhandler.h
index f1974ee5b4..f8bf2ca3fe 100644
--- a/src/plugins/debugger/registerhandler.h
+++ b/src/plugins/debugger/registerhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_REGISTERHANDLER_H
-#define DEBUGGER_REGISTERHANDLER_H
+#pragma once
 
 #include <utils/treemodel.h>
 
@@ -144,5 +143,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_REGISTERHANDLER_H
diff --git a/src/plugins/debugger/registerpostmortemaction.h b/src/plugins/debugger/registerpostmortemaction.h
index 3748daf83b..bff1f6c78e 100644
--- a/src/plugins/debugger/registerpostmortemaction.h
+++ b/src/plugins/debugger/registerpostmortemaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REGISTERPOSTMORTEMACTION_H
-#define REGISTERPOSTMORTEMACTION_H
+#pragma once
 
 #include <utils/savedaction.h>
 
@@ -44,5 +43,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // REGISTERPOSTMORTEMACTION_H
diff --git a/src/plugins/debugger/registerwindow.h b/src/plugins/debugger/registerwindow.h
index 9a3b11704b..13a6f91c02 100644
--- a/src/plugins/debugger/registerwindow.h
+++ b/src/plugins/debugger/registerwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_REGISTERWINDOW_H
-#define DEBUGGER_REGISTERWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 
@@ -47,5 +46,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_REGISTERWINDOW_H
diff --git a/src/plugins/debugger/shared/backtrace.h b/src/plugins/debugger/shared/backtrace.h
index 86daa5ca72..ea4ec142eb 100644
--- a/src/plugins/debugger/shared/backtrace.h
+++ b/src/plugins/debugger/shared/backtrace.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_BACKTRACE_H
-#define DEBUGGER_BACKTRACE_H
+#pragma once
 
 namespace Debugger {
 namespace Internal {
@@ -33,5 +32,3 @@ void dumpBacktrace(int maxdepth = -1);
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_BACKTRACE_H
diff --git a/src/plugins/debugger/shared/cdbsymbolpathlisteditor.h b/src/plugins/debugger/shared/cdbsymbolpathlisteditor.h
index b246bcd6d0..8a760d11b1 100644
--- a/src/plugins/debugger/shared/cdbsymbolpathlisteditor.h
+++ b/src/plugins/debugger/shared/cdbsymbolpathlisteditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLPATHLISTEDITOR_H
-#define SYMBOLPATHLISTEDITOR_H
+#pragma once
 
 #include <utils/pathlisteditor.h>
 
@@ -95,5 +94,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // SYMBOLPATHLISTEDITOR_H
diff --git a/src/plugins/debugger/shared/hostutils.h b/src/plugins/debugger/shared/hostutils.h
index 7c2a1d6f04..3348530867 100644
--- a/src/plugins/debugger/shared/hostutils.h
+++ b/src/plugins/debugger/shared/hostutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_HOSTUTILS_H
-#define DEBUGGER_HOSTUTILS_H
+#pragma once
 
 #include <QList>
 
@@ -68,5 +67,3 @@ bool isDebuggerWinException(unsigned long code);
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_HOSTUTILS_H
diff --git a/src/plugins/debugger/shared/peutils.h b/src/plugins/debugger/shared/peutils.h
index 47f3ee0bf8..0d25d8ace1 100644
--- a/src/plugins/debugger/shared/peutils.h
+++ b/src/plugins/debugger/shared/peutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_PEUTILS_H
-#define DEBUGGER_PEUTILS_H
+#pragma once
 
 #include <qnamespace.h>
 
@@ -43,5 +42,3 @@ bool getPDBFiles(const QString &peExecutableFileName, QStringList *rc, QString *
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_PEUTILS_H
diff --git a/src/plugins/debugger/shared/symbolpathsdialog.h b/src/plugins/debugger/shared/symbolpathsdialog.h
index d6c0ad89bc..304988e285 100644
--- a/src/plugins/debugger/shared/symbolpathsdialog.h
+++ b/src/plugins/debugger/shared/symbolpathsdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SYMBOLPATHSDIALOG_H
-#define SYMBOLPATHSDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QString>
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // SYMBOLPATHSDIALOG_H
diff --git a/src/plugins/debugger/simplifytype.h b/src/plugins/debugger/simplifytype.h
index 72dd536780..ac4f981dcc 100644
--- a/src/plugins/debugger/simplifytype.h
+++ b/src/plugins/debugger/simplifytype.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_SIMPLIFY_TYPE_H
-#define DEBUGGER_SIMPLIFY_TYPE_H
+#pragma once
 
 #include <QString>
 
@@ -38,6 +37,3 @@ QString simplifyType(const QString &typeIn);
 
 } // namespace Internal
 } // namespace Debugger
-
-
-#endif // DEBUGGER_SIMPLIFY_TYPE_H
diff --git a/src/plugins/debugger/snapshothandler.h b/src/plugins/debugger/snapshothandler.h
index 71163647c0..fb9225d335 100644
--- a/src/plugins/debugger/snapshothandler.h
+++ b/src/plugins/debugger/snapshothandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_SNAPSHOTHANDLER_H
-#define DEBUGGER_SNAPSHOTHANDLER_H
+#pragma once
 
 #include <QAbstractTableModel>
 #include <QPointer>
@@ -79,5 +78,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_SNAPSHOTHANDLER_H
diff --git a/src/plugins/debugger/snapshotwindow.h b/src/plugins/debugger/snapshotwindow.h
index 6097874a8b..dfcdaf5e6a 100644
--- a/src/plugins/debugger/snapshotwindow.h
+++ b/src/plugins/debugger/snapshotwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_SNAPSHOTWINDOW_H
-#define DEBUGGER_SNAPSHOTWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 
@@ -51,6 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_SNAPSHOTWINDOW_H
-
diff --git a/src/plugins/debugger/sourceagent.h b/src/plugins/debugger/sourceagent.h
index 14a90c8eb3..592d8ce66a 100644
--- a/src/plugins/debugger/sourceagent.h
+++ b/src/plugins/debugger/sourceagent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_SOURCE_AGENT_H
-#define DEBUGGER_SOURCE_AGENT_H
+#pragma once
 
 #include <QString>
 
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif
diff --git a/src/plugins/debugger/sourcefileshandler.h b/src/plugins/debugger/sourcefileshandler.h
index 93cf42c3b4..a859880d1e 100644
--- a/src/plugins/debugger/sourcefileshandler.h
+++ b/src/plugins/debugger/sourcefileshandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_SOURCEFILESHANDLER_H
-#define DEBUGGER_SOURCEFILESHANDLER_H
+#pragma once
 
 #include <QAbstractItemModel>
 #include <QStringList>
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_SOURCEFILESHANDLER_H
diff --git a/src/plugins/debugger/sourcefileswindow.h b/src/plugins/debugger/sourcefileswindow.h
index 8080f72551..9a2af38198 100644
--- a/src/plugins/debugger/sourcefileswindow.h
+++ b/src/plugins/debugger/sourcefileswindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SOURCEFILESWINDOW_H
-#define SOURCEFILESWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 
@@ -45,6 +44,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // SOURCEFILESWINDOW_H
-
diff --git a/src/plugins/debugger/sourceutils.h b/src/plugins/debugger/sourceutils.h
index 9b6e51d382..12ea4a338f 100644
--- a/src/plugins/debugger/sourceutils.h
+++ b/src/plugins/debugger/sourceutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SOURCE_UTILS_H
-#define SOURCE_UTILS_H
+#pragma once
 
 #include <QString>
 
@@ -58,5 +57,3 @@ ContextData getLocationContext(TextEditor::TextDocument *document, int lineNumbe
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // SOURCE_UTILS_H
diff --git a/src/plugins/debugger/stackframe.h b/src/plugins/debugger/stackframe.h
index df29aa5019..5d7674e642 100644
--- a/src/plugins/debugger/stackframe.h
+++ b/src/plugins/debugger/stackframe.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_STACKFRAME_H
-#define DEBUGGER_STACKFRAME_H
+#pragma once
 
 #include "debuggerconstants.h"
 
@@ -74,5 +73,3 @@ typedef QList<StackFrame> StackFrames;
 } // namespace Debugger
 
 Q_DECLARE_METATYPE(Debugger::Internal::StackFrame)
-
-#endif // DEBUGGER_STACKFRAME_H
diff --git a/src/plugins/debugger/stackhandler.h b/src/plugins/debugger/stackhandler.h
index e10b9818e5..10649f5b88 100644
--- a/src/plugins/debugger/stackhandler.h
+++ b/src/plugins/debugger/stackhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_STACKHANDLER_H
-#define DEBUGGER_STACKHANDLER_H
+#pragma once
 
 #include "stackframe.h"
 
@@ -98,5 +97,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_STACKHANDLER_H
diff --git a/src/plugins/debugger/stackwindow.h b/src/plugins/debugger/stackwindow.h
index 3dbfb3740d..7a44c996a4 100644
--- a/src/plugins/debugger/stackwindow.h
+++ b/src/plugins/debugger/stackwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_STACKWINDOW_H
-#define DEBUGGER_STACKWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 #include <QCoreApplication>
@@ -50,6 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_STACKWINDOW_H
-
diff --git a/src/plugins/debugger/terminal.h b/src/plugins/debugger/terminal.h
index 2383772d57..67b3bf851a 100644
--- a/src/plugins/debugger/terminal.h
+++ b/src/plugins/debugger/terminal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_TERMINAL_H
-#define DEBUGGER_TERMINAL_H
+#pragma once
 
 #include <QCoreApplication>
 #include <QSocketNotifier>
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_TERMINAL_H
diff --git a/src/plugins/debugger/threaddata.h b/src/plugins/debugger/threaddata.h
index 2a5c2315f4..23f280c105 100644
--- a/src/plugins/debugger/threaddata.h
+++ b/src/plugins/debugger/threaddata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THREADDATA_H
-#define THREADDATA_H
+#pragma once
 
 #include <QString>
 #include <QVector>
@@ -111,5 +110,3 @@ typedef QVector<ThreadData> Threads;
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // THREADDATA_H
diff --git a/src/plugins/debugger/threadshandler.h b/src/plugins/debugger/threadshandler.h
index 3e644a0387..5ddfbf5dca 100644
--- a/src/plugins/debugger/threadshandler.h
+++ b/src/plugins/debugger/threadshandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THREADSHANDLER_H
-#define THREADSHANDLER_H
+#pragma once
 
 #include "threaddata.h"
 
@@ -90,5 +89,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // THREADSHANDLER_H
diff --git a/src/plugins/debugger/threadswindow.h b/src/plugins/debugger/threadswindow.h
index 9a814a27c8..8840043fb3 100644
--- a/src/plugins/debugger/threadswindow.h
+++ b/src/plugins/debugger/threadswindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef THREADSWINDOW_H
-#define THREADSWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 
@@ -45,5 +44,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // THREADSWINDOW_H
diff --git a/src/plugins/debugger/unstartedappwatcherdialog.h b/src/plugins/debugger/unstartedappwatcherdialog.h
index 6ab2cc4caf..47d38c17d9 100644
--- a/src/plugins/debugger/unstartedappwatcherdialog.h
+++ b/src/plugins/debugger/unstartedappwatcherdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UNSTARTEDAPPWATCHERDIALOG_H
-#define UNSTARTEDAPPWATCHERDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QTimer>
@@ -96,5 +95,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // UNSTARTEDAPPWATCHERDIALOG_H
diff --git a/src/plugins/debugger/watchdata.h b/src/plugins/debugger/watchdata.h
index 4fe9715783..575c628650 100644
--- a/src/plugins/debugger/watchdata.h
+++ b/src/plugins/debugger/watchdata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_WATCHDATA_H
-#define DEBUGGER_WATCHDATA_H
+#pragma once
 
 #include "debuggerprotocol.h"
 
@@ -129,5 +128,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_WATCHDATA_H
diff --git a/src/plugins/debugger/watchdelegatewidgets.h b/src/plugins/debugger/watchdelegatewidgets.h
index 139391b368..e9acb3a217 100644
--- a/src/plugins/debugger/watchdelegatewidgets.h
+++ b/src/plugins/debugger/watchdelegatewidgets.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WATCHDELEGATEWIDGETS_H
-#define WATCHDELEGATEWIDGETS_H
+#pragma once
 
 #include <QLineEdit>
 #include <QComboBox>
@@ -109,5 +108,3 @@ public:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // WATCHDELEGATEWIDGETS_H
diff --git a/src/plugins/debugger/watchhandler.h b/src/plugins/debugger/watchhandler.h
index 29c13ae3bd..527c93bb45 100644
--- a/src/plugins/debugger/watchhandler.h
+++ b/src/plugins/debugger/watchhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_WATCHHANDLER_H
-#define DEBUGGER_WATCHHANDLER_H
+#pragma once
 
 #include "watchdata.h"
 
@@ -128,5 +127,3 @@ private:
 } // namespace Debugger
 
 Q_DECLARE_METATYPE(Debugger::Internal::DisplayFormat)
-
-#endif // DEBUGGER_WATCHHANDLER_H
diff --git a/src/plugins/debugger/watchutils.h b/src/plugins/debugger/watchutils.h
index 91f019b648..0e7e55baaf 100644
--- a/src/plugins/debugger/watchutils.h
+++ b/src/plugins/debugger/watchutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WATCHUTILS_H
-#define WATCHUTILS_H
+#pragma once
 
 // NOTE: Don't add dependencies to other files.
 // This is used in the debugger auto-tests.
@@ -54,5 +53,3 @@ QString removeObviousSideEffects(const QString &exp);
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // WATCHUTILS_H
diff --git a/src/plugins/debugger/watchwindow.h b/src/plugins/debugger/watchwindow.h
index 569e436cfd..f7eefe9bd0 100644
--- a/src/plugins/debugger/watchwindow.h
+++ b/src/plugins/debugger/watchwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGGER_WATCHWINDOW_H
-#define DEBUGGER_WATCHWINDOW_H
+#pragma once
 
 #include <utils/basetreeview.h>
 
@@ -92,5 +91,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // DEBUGGER_WATCHWINDOW_H
diff --git a/src/plugins/designer/codemodelhelpers.h b/src/plugins/designer/codemodelhelpers.h
index 9c5385ea9b..9e3e845d74 100644
--- a/src/plugins/designer/codemodelhelpers.h
+++ b/src/plugins/designer/codemodelhelpers.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODEMODELHELPERS_H
-#define CODEMODELHELPERS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -46,5 +45,3 @@ bool navigateToSlot(const QString &uiFileName,
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // CODEMODELHELPERS_H
diff --git a/src/plugins/designer/cpp/formclasswizard.h b/src/plugins/designer/cpp/formclasswizard.h
index 520c3575d4..8dc4868a5e 100644
--- a/src/plugins/designer/cpp/formclasswizard.h
+++ b/src/plugins/designer/cpp/formclasswizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMCLASSWIZARD_H
-#define FORMCLASSWIZARD_H
+#pragma once
 
 #include "formclasswizardparameters.h"
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMCLASSWIZARD_H
diff --git a/src/plugins/designer/cpp/formclasswizarddialog.h b/src/plugins/designer/cpp/formclasswizarddialog.h
index 41ddd60345..18c96e0f0f 100644
--- a/src/plugins/designer/cpp/formclasswizarddialog.h
+++ b/src/plugins/designer/cpp/formclasswizarddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMCLASSWIZARDDIALOG_H
-#define FORMCLASSWIZARDDIALOG_H
+#pragma once
 
 #include <coreplugin/basefilewizard.h>
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMCLASSWIZARDDIALOG_H
diff --git a/src/plugins/designer/cpp/formclasswizardpage.h b/src/plugins/designer/cpp/formclasswizardpage.h
index 37e2b30703..1f442610a5 100644
--- a/src/plugins/designer/cpp/formclasswizardpage.h
+++ b/src/plugins/designer/cpp/formclasswizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMCLASSWIZARDPAGE_H
-#define FORMCLASSWIZARDPAGE_H
+#pragma once
 
 #include <QWizardPage>
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif //FORMCLASSWIZARDPAGE_H
diff --git a/src/plugins/designer/cpp/formclasswizardparameters.h b/src/plugins/designer/cpp/formclasswizardparameters.h
index 043c045750..7aa25f5cb3 100644
--- a/src/plugins/designer/cpp/formclasswizardparameters.h
+++ b/src/plugins/designer/cpp/formclasswizardparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMCLASSWIZARDPARAMETERS_H
-#define FORMCLASSWIZARDPARAMETERS_H
+#pragma once
 
 #include <QString>
 #include <QMetaType>
@@ -48,5 +47,3 @@ public:
 } // namespace Designer
 
 Q_DECLARE_METATYPE(Designer::FormClassWizardParameters)
-
-#endif // FORMCLASSWIZARDPARAMETERS_H
diff --git a/src/plugins/designer/designer_export.h b/src/plugins/designer/designer_export.h
index c6c1c25593..000e6c6130 100644
--- a/src/plugins/designer/designer_export.h
+++ b/src/plugins/designer/designer_export.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNER_EXPORT_H
-#define DESIGNER_EXPORT_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define DESIGNER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // DESIGNER_EXPORT_H
diff --git a/src/plugins/designer/designerconstants.h b/src/plugins/designer/designerconstants.h
index 1704211df9..a097a991d0 100644
--- a/src/plugins/designer/designerconstants.h
+++ b/src/plugins/designer/designerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNERCONSTANTS_H
-#define DESIGNERCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -73,5 +72,3 @@ namespace Internal {
 }
 } // Constants
 } // Designer
-
-#endif //DESIGNERCONSTANTS_H
diff --git a/src/plugins/designer/designercontext.h b/src/plugins/designer/designercontext.h
index 20cb7f1210..11bd0afd8e 100644
--- a/src/plugins/designer/designercontext.h
+++ b/src/plugins/designer/designercontext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNERCONTEXT_H
-#define DESIGNERCONTEXT_H
+#pragma once
 
 #include <coreplugin/icontext.h>
 
@@ -43,5 +42,3 @@ public:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // DESIGNERCONTEXT_H
diff --git a/src/plugins/designer/editordata.h b/src/plugins/designer/editordata.h
index a2fd63bfbf..c4d92f9a41 100644
--- a/src/plugins/designer/editordata.h
+++ b/src/plugins/designer/editordata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORDATA_H
-#define EDITORDATA_H
+#pragma once
 
 namespace SharedTools { class WidgetHost; }
 
@@ -45,5 +44,3 @@ public:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // EDITORDATA_H
diff --git a/src/plugins/designer/editorwidget.h b/src/plugins/designer/editorwidget.h
index 374157cff2..76e77665f3 100644
--- a/src/plugins/designer/editorwidget.h
+++ b/src/plugins/designer/editorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNER_EDITORWIDGET_H
-#define DESIGNER_EDITORWIDGET_H
+#pragma once
 
 #include "designerconstants.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // DESIGNER_EDITORWIDGET_H
diff --git a/src/plugins/designer/formeditorfactory.h b/src/plugins/designer/formeditorfactory.h
index f81b657317..8c8b898a7e 100644
--- a/src/plugins/designer/formeditorfactory.h
+++ b/src/plugins/designer/formeditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMEDITORFACTORY_H
-#define FORMEDITORFACTORY_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditorfactory.h>
 
@@ -43,5 +42,3 @@ public:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMEDITORFACTORY_H
diff --git a/src/plugins/designer/formeditorplugin.h b/src/plugins/designer/formeditorplugin.h
index 8fa68e3f14..47ecdeda28 100644
--- a/src/plugins/designer/formeditorplugin.h
+++ b/src/plugins/designer/formeditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMEDITORPLUGIN_H
-#define FORMEDITORPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMEDITORPLUGIN_H
diff --git a/src/plugins/designer/formeditorstack.h b/src/plugins/designer/formeditorstack.h
index d8f84c2cde..3d1dc21e1c 100644
--- a/src/plugins/designer/formeditorstack.h
+++ b/src/plugins/designer/formeditorstack.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMEDITORSTACK_H
-#define FORMEDITORSTACK_H
+#pragma once
 
 #include "editordata.h"
 
@@ -82,5 +81,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMEDITORSTACK_H
diff --git a/src/plugins/designer/formeditorw.h b/src/plugins/designer/formeditorw.h
index 51eaaf6a13..7dbc96d94f 100644
--- a/src/plugins/designer/formeditorw.h
+++ b/src/plugins/designer/formeditorw.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMEDITORW_H
-#define FORMEDITORW_H
+#pragma once
 
 #include "designerconstants.h"
 
@@ -90,5 +89,3 @@ public:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMEDITORW_H
diff --git a/src/plugins/designer/formtemplatewizardpage.h b/src/plugins/designer/formtemplatewizardpage.h
index 471837e360..047ca4667e 100644
--- a/src/plugins/designer/formtemplatewizardpage.h
+++ b/src/plugins/designer/formtemplatewizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMTEMPLATEWIZARDPAGE_H
-#define FORMTEMPLATEWIZARDPAGE_H
+#pragma once
 
 #include <projectexplorer/jsonwizard/jsonwizardpagefactory.h>
 
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMTEMPLATEWIZARDPAGE_H
diff --git a/src/plugins/designer/formwindoweditor.h b/src/plugins/designer/formwindoweditor.h
index 146f528316..80eaeabf24 100644
--- a/src/plugins/designer/formwindoweditor.h
+++ b/src/plugins/designer/formwindoweditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMWINDOWEDITOR_H
-#define FORMWINDOWEDITOR_H
+#pragma once
 
 #include "designer_export.h"
 #include <texteditor/texteditor.h>
@@ -60,5 +59,3 @@ public:
 };
 
 } // namespace Designer
-
-#endif // FORMWINDOWEDITOR_H
diff --git a/src/plugins/designer/formwindowfile.h b/src/plugins/designer/formwindowfile.h
index 648460b7e1..7ee62bb951 100644
--- a/src/plugins/designer/formwindowfile.h
+++ b/src/plugins/designer/formwindowfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMWINDOWFILE_H
-#define FORMWINDOWFILE_H
+#pragma once
 
 #include <texteditor/textdocument.h>
 
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // FORMWINDOWFILE_H
diff --git a/src/plugins/designer/qtcreatorintegration.h b/src/plugins/designer/qtcreatorintegration.h
index 00baa16bb6..a00540ba8d 100644
--- a/src/plugins/designer/qtcreatorintegration.h
+++ b/src/plugins/designer/qtcreatorintegration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTCREATORINTEGRATION_H
-#define QTCREATORINTEGRATION_H
+#pragma once
 
 #include <QtGlobal>
 #include <QDesignerIntegration>
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // QTCREATORINTEGRATION_H
diff --git a/src/plugins/designer/qtdesignerformclasscodegenerator.h b/src/plugins/designer/qtdesignerformclasscodegenerator.h
index 6f67e052ab..96eb76e07f 100644
--- a/src/plugins/designer/qtdesignerformclasscodegenerator.h
+++ b/src/plugins/designer/qtdesignerformclasscodegenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTDESIGNERFORMCLASSCODEGENERATOR_H
-#define QTDESIGNERFORMCLASSCODEGENERATOR_H
+#pragma once
 
 #include <QString>
 #include <QVariant>
@@ -52,5 +51,3 @@ public:
     Q_INVOKABLE QVariant generateFormClassCode(const Designer::FormClassWizardParameters &parameters);
 };
 } // namespace Designer
-
-#endif // QTDESIGNERFORMCLASSCODEGENERATOR_H
diff --git a/src/plugins/designer/resourcehandler.h b/src/plugins/designer/resourcehandler.h
index d714a04c1b..4fa3630d7e 100644
--- a/src/plugins/designer/resourcehandler.h
+++ b/src/plugins/designer/resourcehandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCEHANDLER_H
-#define RESOURCEHANDLER_H
+#pragma once
 
 #include <QObject>
 #include <QStringList>
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // RESOURCEHANDLER_H
diff --git a/src/plugins/designer/settingsmanager.h b/src/plugins/designer/settingsmanager.h
index 164f35e11d..2d64d95048 100644
--- a/src/plugins/designer/settingsmanager.h
+++ b/src/plugins/designer/settingsmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSMANAGER_H
-#define SETTINGSMANAGER_H
+#pragma once
 
 #include <QDesignerSettingsInterface>
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // SETTINGSMANAGER_H
diff --git a/src/plugins/designer/settingspage.h b/src/plugins/designer/settingspage.h
index 98360b822f..7e0a6b1836 100644
--- a/src/plugins/designer/settingspage.h
+++ b/src/plugins/designer/settingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNER_SETTINGSPAGE_H
-#define DESIGNER_SETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // DESIGNER_SETTINGSPAGE_H
diff --git a/src/plugins/diffeditor/diffeditor.h b/src/plugins/diffeditor/diffeditor.h
index 346b36c498..7539ff31d6 100644
--- a/src/plugins/diffeditor/diffeditor.h
+++ b/src/plugins/diffeditor/diffeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITOR_H
-#define DIFFEDITOR_H
+#pragma once
 
 #include "diffeditorcontroller.h"
 
@@ -111,5 +110,3 @@ private:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // DIFFEDITOR_H
diff --git a/src/plugins/diffeditor/diffeditor_global.h b/src/plugins/diffeditor/diffeditor_global.h
index 4a1ccb9a8c..763096abbf 100644
--- a/src/plugins/diffeditor/diffeditor_global.h
+++ b/src/plugins/diffeditor/diffeditor_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITOR_GLOBAL_H
-#define DIFFEDITOR_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,5 +32,3 @@
 #else
 #  define DIFFEDITOR_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // DIFFEDITOR_GLOBAL_H
diff --git a/src/plugins/diffeditor/diffeditorconstants.h b/src/plugins/diffeditor/diffeditorconstants.h
index d9a1a5f9e3..1c9f605aa4 100644
--- a/src/plugins/diffeditor/diffeditorconstants.h
+++ b/src/plugins/diffeditor/diffeditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITORCONSTANTS_H
-#define DIFFEDITORCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -40,5 +39,3 @@ const char EXPAND_BRANCHES[] = "Branches: <Expand>";
 
 } // namespace Constants
 } // namespace DiffEditor
-
-#endif // DIFFEDITORCONSTANTS_H
diff --git a/src/plugins/diffeditor/diffeditorcontroller.h b/src/plugins/diffeditor/diffeditorcontroller.h
index 3eb7546610..f73524fff5 100644
--- a/src/plugins/diffeditor/diffeditorcontroller.h
+++ b/src/plugins/diffeditor/diffeditorcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITORCONTROLLER_H
-#define DIFFEDITORCONTROLLER_H
+#pragma once
 
 #include "diffeditor_global.h"
 #include "diffutils.h"
@@ -96,5 +95,3 @@ private:
 };
 
 } // namespace DiffEditor
-
-#endif // DIFFEDITORCONTROLLER_H
diff --git a/src/plugins/diffeditor/diffeditordocument.h b/src/plugins/diffeditor/diffeditordocument.h
index 936d465784..81d98bb42d 100644
--- a/src/plugins/diffeditor/diffeditordocument.h
+++ b/src/plugins/diffeditor/diffeditordocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITORDOCUMENT_H
-#define DIFFEDITORDOCUMENT_H
+#pragma once
 
 #include "diffutils.h"
 
@@ -107,5 +106,3 @@ private:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // DIFFEDITORDOCUMENT_H
diff --git a/src/plugins/diffeditor/diffeditorfactory.h b/src/plugins/diffeditor/diffeditorfactory.h
index da54f39290..bea963632e 100644
--- a/src/plugins/diffeditor/diffeditorfactory.h
+++ b/src/plugins/diffeditor/diffeditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITORFACTORY_H
-#define DIFFEDITORFACTORY_H
+#pragma once
 
 #include "diffeditor_global.h"
 
@@ -46,5 +45,3 @@ public:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // DIFFEDITORFACTORY_H
diff --git a/src/plugins/diffeditor/diffeditoricons.h b/src/plugins/diffeditor/diffeditoricons.h
index d10bac9e6b..4db2c02dfc 100644
--- a/src/plugins/diffeditor/diffeditoricons.h
+++ b/src/plugins/diffeditor/diffeditoricons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITORICONS_H
-#define DIFFEDITORICONS_H
+#pragma once
 
 #include <utils/icon.h>
 
@@ -40,5 +39,3 @@ const Utils::Icon SIDEBYSIDE_DIFF({
 
 } // namespace Icons
 } // namespace DiffEditor
-
-#endif // DIFFEDITORICONS_H
diff --git a/src/plugins/diffeditor/diffeditorplugin.h b/src/plugins/diffeditor/diffeditorplugin.h
index 07c2cd6c4a..3f38425517 100644
--- a/src/plugins/diffeditor/diffeditorplugin.h
+++ b/src/plugins/diffeditor/diffeditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFEDITORPLUGIN_H
-#define DIFFEDITORPLUGIN_H
+#pragma once
 
 #include "diffeditor_global.h"
 
@@ -55,5 +54,3 @@ private slots:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // DIFFEDITORPLUGIN_H
diff --git a/src/plugins/diffeditor/differ.h b/src/plugins/diffeditor/differ.h
index ec8166afea..d841dd0bee 100644
--- a/src/plugins/diffeditor/differ.h
+++ b/src/plugins/diffeditor/differ.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFER_H
-#define DIFFER_H
+#pragma once
 
 #include "diffeditor_global.h"
 #include <QString>
@@ -114,5 +113,3 @@ private:
 };
 
 } // namespace DiffEditor
-
-#endif // DIFF_H
diff --git a/src/plugins/diffeditor/diffutils.h b/src/plugins/diffeditor/diffutils.h
index 2412bc5432..417309294b 100644
--- a/src/plugins/diffeditor/diffutils.h
+++ b/src/plugins/diffeditor/diffutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFUTILS_H
-#define DIFFUTILS_H
+#pragma once
 
 #include "diffeditor_global.h"
 
@@ -149,5 +148,3 @@ public:
 };
 
 } // namespace DiffEditor
-
-#endif // DIFFUTILS_H
diff --git a/src/plugins/diffeditor/diffview.h b/src/plugins/diffeditor/diffview.h
index 2d2cdc6b88..bf5342f273 100644
--- a/src/plugins/diffeditor/diffview.h
+++ b/src/plugins/diffeditor/diffview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIFFVIEW_H
-#define DIFFVIEW_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -133,5 +132,3 @@ private:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // DIFFVIEW_H
diff --git a/src/plugins/diffeditor/selectabletexteditorwidget.h b/src/plugins/diffeditor/selectabletexteditorwidget.h
index 52eaa911f7..2d04c7b39e 100644
--- a/src/plugins/diffeditor/selectabletexteditorwidget.h
+++ b/src/plugins/diffeditor/selectabletexteditorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SELECTABLETEXTEDITORWIDGET_H
-#define SELECTABLETEXTEDITORWIDGET_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // SELECTABLETEXTEDITORWIDGET_H
diff --git a/src/plugins/diffeditor/sidebysidediffeditorwidget.h b/src/plugins/diffeditor/sidebysidediffeditorwidget.h
index 8eb7f4efca..bd6fcf3252 100644
--- a/src/plugins/diffeditor/sidebysidediffeditorwidget.h
+++ b/src/plugins/diffeditor/sidebysidediffeditorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIDEBYSIDEDIFFEDITORWIDGET_H
-#define SIDEBYSIDEDIFFEDITORWIDGET_H
+#pragma once
 
 #include "diffutils.h"
 
@@ -119,5 +118,3 @@ private:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // SIDEBYSIDEDIFFEDITORWIDGET_H
diff --git a/src/plugins/diffeditor/unifieddiffeditorwidget.h b/src/plugins/diffeditor/unifieddiffeditorwidget.h
index abbf0d7780..7deb3bcecc 100644
--- a/src/plugins/diffeditor/unifieddiffeditorwidget.h
+++ b/src/plugins/diffeditor/unifieddiffeditorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UNIFIEDDIFFEDITORWIDGET_H
-#define UNIFIEDDIFFEDITORWIDGET_H
+#pragma once
 
 #include "diffutils.h"
 #include "selectabletexteditorwidget.h"
@@ -141,5 +140,3 @@ private:
 
 } // namespace Internal
 } // namespace DiffEditor
-
-#endif // UNIFIEDDIFFEDITORWIDGET_H
diff --git a/src/plugins/emacskeys/emacskeysconstants.h b/src/plugins/emacskeys/emacskeysconstants.h
index 37d4873948..5f87669bbf 100644
--- a/src/plugins/emacskeys/emacskeysconstants.h
+++ b/src/plugins/emacskeys/emacskeysconstants.h
@@ -22,8 +22,7 @@
 **
 ****************************************************************************/
 
-#ifndef EMACSKEYSCONSTANTS_H
-#define EMACSKEYSCONSTANTS_H
+#pragma once
 
 namespace EmacsKeys {
 namespace Constants {
@@ -55,5 +54,3 @@ const char SCROLL_HALF_UP[]           = "EmacsKeys.ScrollHalfUp";
 
 } // namespace EmacsKeys
 } // namespace Constants
-
-#endif // EMACSKEYSCONSTANTS_H
diff --git a/src/plugins/emacskeys/emacskeysplugin.h b/src/plugins/emacskeys/emacskeysplugin.h
index a44dda7abf..ec95a6a39a 100644
--- a/src/plugins/emacskeys/emacskeysplugin.h
+++ b/src/plugins/emacskeys/emacskeysplugin.h
@@ -22,8 +22,7 @@
 **
 ****************************************************************************/
 
-#ifndef EMACSKEYS_H
-#define EMACSKEYS_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -102,5 +101,3 @@ private:
 
 } // namespace Internal
 } // namespace EmacsKeys
-
-#endif // EMACSKEYS_H
diff --git a/src/plugins/emacskeys/emacskeysstate.h b/src/plugins/emacskeys/emacskeysstate.h
index 2969ccea95..ff9f7a9b82 100644
--- a/src/plugins/emacskeys/emacskeysstate.h
+++ b/src/plugins/emacskeys/emacskeysstate.h
@@ -22,8 +22,7 @@
 **
 ****************************************************************************/
 
-#ifndef EMACSKEYSSTATE_H
-#define EMACSKEYSSTATE_H
+#pragma once
 
 #include <QObject>
 
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace EmacsKeys
-
-#endif // EMACSKEYSSTATE_H
diff --git a/src/plugins/fakevim/fakevimactions.h b/src/plugins/fakevim/fakevimactions.h
index 5b2e8889d5..e1c230ba51 100644
--- a/src/plugins/fakevim/fakevimactions.h
+++ b/src/plugins/fakevim/fakevimactions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FAKEVIM_ACTIONS_H
-#define FAKEVIM_ACTIONS_H
+#pragma once
 
 #ifndef FAKEVIM_STANDALONE
 #   include <utils/savedaction.h>
@@ -143,5 +142,3 @@ FakeVimAction *theFakeVimSetting(int code);
 
 } // namespace Internal
 } // namespace FakeVim
-
-#endif // FAKEVIM_ACTTIONS_H
diff --git a/src/plugins/fakevim/fakevimhandler.h b/src/plugins/fakevim/fakevimhandler.h
index f9c71e87a0..cd4e17117e 100644
--- a/src/plugins/fakevim/fakevimhandler.h
+++ b/src/plugins/fakevim/fakevimhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FAKEVIM_HANDLER_H
-#define FAKEVIM_HANDLER_H
+#pragma once
 
 #include <QObject>
 #include <QTextEdit>
@@ -169,6 +168,3 @@ private:
 } // namespace FakeVim
 
 Q_DECLARE_METATYPE(FakeVim::Internal::ExCommand)
-
-
-#endif // FAKEVIM_HANDLER_H
diff --git a/src/plugins/fakevim/fakevimplugin.h b/src/plugins/fakevim/fakevimplugin.h
index 4f3ee2201d..edbf6ab0b9 100644
--- a/src/plugins/fakevim/fakevimplugin.h
+++ b/src/plugins/fakevim/fakevimplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FAKEVIMPLUGIN_H
-#define FAKEVIMPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -184,5 +183,3 @@ private:
 
 } // namespace Internal
 } // namespace FakeVim
-
-#endif // FAKEVIMPLUGIN_H
diff --git a/src/plugins/fakevim/fakevimtr.h b/src/plugins/fakevim/fakevimtr.h
index 42bc0ac79d..cb6f2b47ea 100644
--- a/src/plugins/fakevim/fakevimtr.h
+++ b/src/plugins/fakevim/fakevimtr.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FAKEVIMTR_H
-#define FAKEVIMTR_H
+#pragma once
 
 #include <QCoreApplication>
 
@@ -36,5 +35,3 @@ struct Tr
 };
 
 } // namespace FakeVim
-
-#endif // FAKEVIMTR
diff --git a/src/plugins/git/gerrit/branchcombobox.h b/src/plugins/git/gerrit/branchcombobox.h
index fe34abc61c..fcc97693a6 100644
--- a/src/plugins/git/gerrit/branchcombobox.h
+++ b/src/plugins/git/gerrit/branchcombobox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BRANCHCOMBOBOX_H
-#define BRANCHCOMBOBOX_H
+#pragma once
 
 #include <QComboBox>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace Gerrit
-
-#endif // BRANCHCOMBOBOX_H
diff --git a/src/plugins/git/gerrit/gerritdialog.h b/src/plugins/git/gerrit/gerritdialog.h
index 48b657ec72..5f2fc2ec65 100644
--- a/src/plugins/git/gerrit/gerritdialog.h
+++ b/src/plugins/git/gerrit/gerritdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERRIT_INTERNAL_GERRITDIALOG_H
-#define GERRIT_INTERNAL_GERRITDIALOG_H
+#pragma once
 
 #include <utils/pathchooser.h>
 
@@ -115,5 +114,3 @@ private:
 
 } // namespace Internal
 } // namespace Gerrit
-
-#endif // GERRIT_INTERNAL_GERRITDIALOG_H
diff --git a/src/plugins/git/gerrit/gerritmodel.h b/src/plugins/git/gerrit/gerritmodel.h
index b0a8803a26..1ceb7e7980 100644
--- a/src/plugins/git/gerrit/gerritmodel.h
+++ b/src/plugins/git/gerrit/gerritmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERRIT_INTERNAL_GERRITMODEL_H
-#define GERRIT_INTERNAL_GERRITMODEL_H
+#pragma once
 
 #include <QStandardItemModel>
 #include <QSharedPointer>
@@ -147,5 +146,3 @@ private:
 } // namespace Gerrit
 
 Q_DECLARE_METATYPE(Gerrit::Internal::GerritChangePtr)
-
-#endif // GERRIT_INTERNAL_GERRITMODEL_H
diff --git a/src/plugins/git/gerrit/gerritoptionspage.h b/src/plugins/git/gerrit/gerritoptionspage.h
index 59e9ebba8c..0a63fea958 100644
--- a/src/plugins/git/gerrit/gerritoptionspage.h
+++ b/src/plugins/git/gerrit/gerritoptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERRIT_INTERNAL_GERRITOPTIONSPAGE_H
-#define GERRIT_INTERNAL_GERRITOPTIONSPAGE_H
+#pragma once
 
 #include <vcsbase/vcsbaseoptionspage.h>
 
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace Gerrit
-
-#endif // GERRIT_INTERNAL_GERRITOPTIONSPAGE_H
diff --git a/src/plugins/git/gerrit/gerritparameters.h b/src/plugins/git/gerrit/gerritparameters.h
index bfc7959745..1d2de0fb25 100644
--- a/src/plugins/git/gerrit/gerritparameters.h
+++ b/src/plugins/git/gerrit/gerritparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERRITPARAMETERS_H
-#define GERRITPARAMETERS_H
+#pragma once
 
 #include <QStringList>
 
@@ -63,5 +62,3 @@ inline bool operator!=(const GerritParameters &p1, const GerritParameters &p2)
 
 } // namespace Internal
 } // namespace Gerrit
-
-#endif // GERRITPARAMETERS_H
diff --git a/src/plugins/git/gerrit/gerritplugin.h b/src/plugins/git/gerrit/gerritplugin.h
index 140d3091d0..b0d0cc51d6 100644
--- a/src/plugins/git/gerrit/gerritplugin.h
+++ b/src/plugins/git/gerrit/gerritplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERRIT_INTERNAL_GERRITPLUGIN_H
-#define GERRIT_INTERNAL_GERRITPLUGIN_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace Gerrit
-
-#endif // GERRIT_INTERNAL_GERRITPLUGIN_H
diff --git a/src/plugins/git/gerrit/gerritpushdialog.h b/src/plugins/git/gerrit/gerritpushdialog.h
index e46a84ccf4..ace926fdc5 100644
--- a/src/plugins/git/gerrit/gerritpushdialog.h
+++ b/src/plugins/git/gerrit/gerritpushdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERRITPUSHDIALOG_H
-#define GERRITPUSHDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QMultiMap>
@@ -76,5 +75,3 @@ private:
 
 } // namespace Internal
 } // namespace Gerrit
-
-#endif // GERRITPUSHDIALOG_H
diff --git a/src/plugins/glsleditor/glslautocompleter.h b/src/plugins/glsleditor/glslautocompleter.h
index c117d568d1..8f09d242cd 100644
--- a/src/plugins/glsleditor/glslautocompleter.h
+++ b/src/plugins/glsleditor/glslautocompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLAUTOCOMPLETER_H
-#define GLSLAUTOCOMPLETER_H
+#pragma once
 
 #include <texteditor/autocompleter.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLAUTOCOMPLETER_H
diff --git a/src/plugins/glsleditor/glslcompletionassist.h b/src/plugins/glsleditor/glslcompletionassist.h
index 8cc29e6c77..3714c3e383 100644
--- a/src/plugins/glsleditor/glslcompletionassist.h
+++ b/src/plugins/glsleditor/glslcompletionassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLCOMPLETIONASSIST_H
-#define GLSLCOMPLETIONASSIST_H
+#pragma once
 
 #include "glsleditor.h"
 
@@ -138,5 +137,3 @@ private:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLCOMPLETIONASSIST_H
diff --git a/src/plugins/glsleditor/glsleditor.h b/src/plugins/glsleditor/glsleditor.h
index 4c1deab1e0..99411bfe8b 100644
--- a/src/plugins/glsleditor/glsleditor.h
+++ b/src/plugins/glsleditor/glsleditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLEDITOR_H
-#define GLSLEDITOR_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -43,5 +42,3 @@ public:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLEDITOR_H
diff --git a/src/plugins/glsleditor/glsleditorconstants.h b/src/plugins/glsleditor/glsleditorconstants.h
index 6a5c973e61..8121517e0f 100644
--- a/src/plugins/glsleditor/glsleditorconstants.h
+++ b/src/plugins/glsleditor/glsleditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLEDITOR_CONSTANTS_H
-#define GLSLEDITOR_CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -50,5 +49,3 @@ const char WIZARD_TR_CATEGORY_GLSL[] = QT_TRANSLATE_NOOP("GLSLEditor", "GLSL");
 
 } // namespace Constants
 } // namespace GlslEditor
-
-#endif // GLSLEDITOR_CONSTANTS_H
diff --git a/src/plugins/glsleditor/glsleditorplugin.h b/src/plugins/glsleditor/glsleditorplugin.h
index e29e2fadae..31925dc7b9 100644
--- a/src/plugins/glsleditor/glsleditorplugin.h
+++ b/src/plugins/glsleditor/glsleditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLEDITORPLUGIN_H
-#define GLSLEDITORPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <glsl/glsl.h>
@@ -67,5 +66,3 @@ public:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLEDITORPLUGIN_H
diff --git a/src/plugins/glsleditor/glslhighlighter.h b/src/plugins/glsleditor/glslhighlighter.h
index c2329d1fbe..afbe882a41 100644
--- a/src/plugins/glsleditor/glslhighlighter.h
+++ b/src/plugins/glsleditor/glslhighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLHIGHLIGHTER_H
-#define GLSLHIGHLIGHTER_H
+#pragma once
 
 #include <texteditor/syntaxhighlighter.h>
 
@@ -62,5 +61,3 @@ protected:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLHIGHLIGHTER_H
diff --git a/src/plugins/glsleditor/glslhoverhandler.h b/src/plugins/glsleditor/glslhoverhandler.h
index d7cc27a4bf..f15c8b9948 100644
--- a/src/plugins/glsleditor/glslhoverhandler.h
+++ b/src/plugins/glsleditor/glslhoverhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLHOVERHANDLER_H
-#define GLSLHOVERHANDLER_H
+#pragma once
 
 #include <texteditor/basehoverhandler.h>
 
@@ -43,5 +42,3 @@ private:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLHOVERHANDLER_H
diff --git a/src/plugins/glsleditor/glslindenter.h b/src/plugins/glsleditor/glslindenter.h
index 499c99a164..e52a024b10 100644
--- a/src/plugins/glsleditor/glslindenter.h
+++ b/src/plugins/glsleditor/glslindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GLSLINDENTER_H
-#define GLSLINDENTER_H
+#pragma once
 
 #include <texteditor/indenter.h>
 
@@ -53,5 +52,3 @@ public:
 
 } // namespace Internal
 } // namespace GlslEditor
-
-#endif // GLSLINDENTER_H
diff --git a/src/plugins/helloworld/helloworldplugin.h b/src/plugins/helloworld/helloworldplugin.h
index 0172b7b8f9..c8d08d5484 100644
--- a/src/plugins/helloworld/helloworldplugin.h
+++ b/src/plugins/helloworld/helloworldplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELLOWORLDPLUGIN_H
-#define HELLOWORLDPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -51,5 +50,3 @@ private slots:
 
 } // namespace Internal
 } // namespace HelloWorld
-
-#endif // HELLOWORLDPLUGIN_H
diff --git a/src/plugins/helloworld/helloworldwindow.h b/src/plugins/helloworld/helloworldwindow.h
index 6332cf35b7..382dac8f22 100644
--- a/src/plugins/helloworld/helloworldwindow.h
+++ b/src/plugins/helloworld/helloworldwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELLOWORLDWINDOW_H
-#define HELLOWORLDWINDOW_H
+#pragma once
 
 #include <QWidget>
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace HelloWorld
-
-#endif // HELLOWORLDWINDOW_H
diff --git a/src/plugins/help/centralwidget.h b/src/plugins/help/centralwidget.h
index b2cc68fd6e..088487e349 100644
--- a/src/plugins/help/centralwidget.h
+++ b/src/plugins/help/centralwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CENTRALWIDGET_H
-#define CENTRALWIDGET_H
+#pragma once
 
 #include "helpwidget.h"
 
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace Help
-
-#endif  // CENTRALWIDGET_H
diff --git a/src/plugins/help/docsettingspage.h b/src/plugins/help/docsettingspage.h
index a4d7ca48e4..e3ea9156db 100644
--- a/src/plugins/help/docsettingspage.h
+++ b/src/plugins/help/docsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DOCSETTINGSPAGE_H
-#define DOCSETTINGSPAGE_H
+#pragma once
 
 #include "ui_docsettingspage.h"
 #include <coreplugin/dialogs/ioptionspage.h>
@@ -77,5 +76,3 @@ private:
 
 } // namespace Help
 } // namespace Internal
-
-#endif // DOCSETTINGSPAGE_H
diff --git a/src/plugins/help/filtersettingspage.h b/src/plugins/help/filtersettingspage.h
index 6d151c9489..0e5b917bd5 100644
--- a/src/plugins/help/filtersettingspage.h
+++ b/src/plugins/help/filtersettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILTERSETTINGSPAGE_H
-#define FILTERSETTINGSPAGE_H
+#pragma once
 
 #include "ui_filtersettingspage.h"
 #include <coreplugin/dialogs/ioptionspage.h>
@@ -72,5 +71,3 @@ private:
 
 } // namespace Help
 } // namespace Internal
-
-#endif // DOCSETTINGSPAGE_H
diff --git a/src/plugins/help/generalsettingspage.h b/src/plugins/help/generalsettingspage.h
index 1ca5cf4770..d8d133c886 100644
--- a/src/plugins/help/generalsettingspage.h
+++ b/src/plugins/help/generalsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERALSETTINGSPAGE_H
-#define GENERALSETTINGSPAGE_H
+#pragma once
 
 #include "ui_generalsettingspage.h"
 #include <coreplugin/dialogs/ioptionspage.h>
@@ -79,5 +78,3 @@ private:
 
     }   // Internal
 }   // Help
-
-#endif  // GENERALSETTINGSPAGE_H
diff --git a/src/plugins/help/helpconstants.h b/src/plugins/help/helpconstants.h
index f5c2622cd6..a832eb29b2 100644
--- a/src/plugins/help/helpconstants.h
+++ b/src/plugins/help/helpconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPCONSTANTS_H
-#define HELPCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 #include <QLatin1String>
@@ -66,5 +65,3 @@ static const char SB_SEARCH[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin",
 
 } // Constants
 } // Help
-
-#endif // HELPCONSTANTS_H
diff --git a/src/plugins/help/helpfindsupport.h b/src/plugins/help/helpfindsupport.h
index d9007cbaa1..3c5cd393a0 100644
--- a/src/plugins/help/helpfindsupport.h
+++ b/src/plugins/help/helpfindsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPFINDSUPPORT_H
-#define HELPFINDSUPPORT_H
+#pragma once
 
 #include "centralwidget.h"
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace Help
-
-#endif // HELPFINDSUPPORT_H
diff --git a/src/plugins/help/helpindexfilter.h b/src/plugins/help/helpindexfilter.h
index abbd13c8d0..f0edb547f6 100644
--- a/src/plugins/help/helpindexfilter.h
+++ b/src/plugins/help/helpindexfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPINDEXFILTER_H
-#define HELPINDEXFILTER_H
+#pragma once
 
 #include <coreplugin/locator/ilocatorfilter.h>
 
@@ -68,5 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace Help
-
-#endif // HELPINDEXFILTER_H
diff --git a/src/plugins/help/helpmode.h b/src/plugins/help/helpmode.h
index 6036f81472..cc3c93222d 100644
--- a/src/plugins/help/helpmode.h
+++ b/src/plugins/help/helpmode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPMODE_H
-#define HELPMODE_H
+#pragma once
 
 #include <coreplugin/imode.h>
 
@@ -42,5 +41,3 @@ public:
 
 } // namespace Internal
 } // namespace Help
-
-#endif // HELPMODE_H
diff --git a/src/plugins/help/helpplugin.h b/src/plugins/help/helpplugin.h
index db48dd76f6..9991704610 100644
--- a/src/plugins/help/helpplugin.h
+++ b/src/plugins/help/helpplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPPLUGIN_H
-#define HELPPLUGIN_H
+#pragma once
 
 #include "helpwidget.h"
 
@@ -135,5 +134,3 @@ private:
 
 } // namespace Internal
 } // namespace Help
-
-#endif // HELPPLUGIN_H
diff --git a/src/plugins/help/helpviewer.h b/src/plugins/help/helpviewer.h
index e1f52de833..4ceccb176f 100644
--- a/src/plugins/help/helpviewer.h
+++ b/src/plugins/help/helpviewer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPVIEWER_H
-#define HELPVIEWER_H
+#pragma once
 
 #include <coreplugin/find/textfindconstants.h>
 
@@ -105,5 +104,3 @@ protected slots:
 
 }   // namespace Internal
 }   // namespace Help
-
-#endif  // HELPVIEWER_H
diff --git a/src/plugins/help/helpwidget.h b/src/plugins/help/helpwidget.h
index bff37b68b0..5d29dd3e6b 100644
--- a/src/plugins/help/helpwidget.h
+++ b/src/plugins/help/helpwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPWIDGET_H
-#define HELPWIDGET_H
+#pragma once
 
 #include <coreplugin/icontext.h>
 
@@ -147,5 +146,3 @@ private:
 
 } // Internal
 } // Help
-
-#endif // HELPWIDGET_H
diff --git a/src/plugins/help/localhelpmanager.h b/src/plugins/help/localhelpmanager.h
index 6fdae1743e..4eae028e3e 100644
--- a/src/plugins/help/localhelpmanager.h
+++ b/src/plugins/help/localhelpmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCALHELPMANAGER_H
-#define LOCALHELPMANAGER_H
+#pragma once
 
 #include <coreplugin/helpmanager.h>
 
@@ -129,5 +128,3 @@ private:
 }   // Help
 
 Q_DECLARE_METATYPE(Help::Internal::LocalHelpManager::HelpData)
-
-#endif  // LOCALHELPMANAGER_H
diff --git a/src/plugins/help/macwebkithelpviewer.h b/src/plugins/help/macwebkithelpviewer.h
index 33c8cf1567..9c4d5ab6ab 100644
--- a/src/plugins/help/macwebkithelpviewer.h
+++ b/src/plugins/help/macwebkithelpviewer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACWEBKITHELPVIEWER_H
-#define MACWEBKITHELPVIEWER_H
+#pragma once
 
 #include "helpviewer.h"
 
@@ -135,5 +134,3 @@ private:
 
 }   // namespace Internal
 }   // namespace Help
-
-#endif // MACWEBKITHELPVIEWER_H
diff --git a/src/plugins/help/openpagesmanager.h b/src/plugins/help/openpagesmanager.h
index d94f82392c..f27164d20b 100644
--- a/src/plugins/help/openpagesmanager.h
+++ b/src/plugins/help/openpagesmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENPAGESMANAGER_H
-#define OPENPAGESMANAGER_H
+#pragma once
 
 #include <QObject>
 
@@ -94,5 +93,3 @@ private:
 
     } // namespace Internal
 } // namespace Help
-
-#endif // OPENPAGESMANAGER_H
diff --git a/src/plugins/help/openpagesmodel.h b/src/plugins/help/openpagesmodel.h
index b657666430..3db1cec3b5 100644
--- a/src/plugins/help/openpagesmodel.h
+++ b/src/plugins/help/openpagesmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENPAGESMODEL_H
-#define OPENPAGESMODEL_H
+#pragma once
 
 #include <QList>
 #include <QAbstractTableModel>
@@ -60,5 +59,3 @@ private:
 
     } // namespace Internal
 } // namespace Help
-
-#endif // OPENPAGESMODEL_H
diff --git a/src/plugins/help/openpagesswitcher.h b/src/plugins/help/openpagesswitcher.h
index 962da8a3f3..2903e486ad 100644
--- a/src/plugins/help/openpagesswitcher.h
+++ b/src/plugins/help/openpagesswitcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENPAGESSWITCHER_H
-#define OPENPAGESSWITCHER_H
+#pragma once
 
 #include <QFrame>
 
@@ -68,5 +67,3 @@ private:
 
     }   // namespace Internal
 }   // namespace Help
-
-#endif  // OPENPAGESSWITCHER_H
diff --git a/src/plugins/help/openpageswidget.h b/src/plugins/help/openpageswidget.h
index cc07765f2c..1cfb931be9 100644
--- a/src/plugins/help/openpageswidget.h
+++ b/src/plugins/help/openpageswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENPAGESWIDGET_H
-#define OPENPAGESWIDGET_H
+#pragma once
 
 #include <coreplugin/opendocumentstreeview.h>
 
@@ -62,5 +61,3 @@ private:
 
     } // namespace Internal
 } // namespace Help
-
-#endif // OPENPAGESWIDGET_H
diff --git a/src/plugins/help/qtwebkithelpviewer.h b/src/plugins/help/qtwebkithelpviewer.h
index 2e2b94503b..186d6f4b18 100644
--- a/src/plugins/help/qtwebkithelpviewer.h
+++ b/src/plugins/help/qtwebkithelpviewer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTWEBKITHELPVIEWER_H
-#define QTWEBKITHELPVIEWER_H
+#pragma once
 
 #include "helpviewer.h"
 
@@ -157,5 +156,3 @@ private:
 }   // namespace Help
 
 #endif // !QT_NO_WEBKIT
-
-#endif // QTWEBKITHELPVIEWER_H
diff --git a/src/plugins/help/remotehelpfilter.h b/src/plugins/help/remotehelpfilter.h
index e10a02eea5..19309d753c 100644
--- a/src/plugins/help/remotehelpfilter.h
+++ b/src/plugins/help/remotehelpfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTEHELPFILTER_H
-#define REMOTEHELPFILTER_H
+#pragma once
 
 #include "ui_remotehelpfilter.h"
 
@@ -82,5 +81,3 @@ private:
 
     } // namespace Internal
 } // namespace Help
-
-#endif // REMOTEHELPFILTER_H
diff --git a/src/plugins/help/searchtaskhandler.h b/src/plugins/help/searchtaskhandler.h
index 9cfac3eff1..4f117510ba 100644
--- a/src/plugins/help/searchtaskhandler.h
+++ b/src/plugins/help/searchtaskhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELP_SEARCHTASKHANDLER_H
-#define HELP_SEARCHTASKHANDLER_H
+#pragma once
 
 #include <projectexplorer/itaskhandler.h>
 
@@ -50,5 +49,3 @@ signals:
 
 } // namespace Internal
 } // namespace Help
-
-#endif // HELP_SEARCHTASKHANDLER_H
diff --git a/src/plugins/help/searchwidget.h b/src/plugins/help/searchwidget.h
index 95cdd92aa4..3c2bdf670d 100644
--- a/src/plugins/help/searchwidget.h
+++ b/src/plugins/help/searchwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEARCHWIDGET_H
-#define SEARCHWIDGET_H
+#pragma once
 
 #include <coreplugin/sidebar.h>
 
@@ -103,5 +102,3 @@ private:
 
 } // namespace Internal
 } // namespace Help
-
-#endif // SEARCHWIDGET_H
diff --git a/src/plugins/help/textbrowserhelpviewer.h b/src/plugins/help/textbrowserhelpviewer.h
index d71bf2b5ef..cbe56524ec 100644
--- a/src/plugins/help/textbrowserhelpviewer.h
+++ b/src/plugins/help/textbrowserhelpviewer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTBROWSERHELPVIEWER_H
-#define TEXTBROWSERHELPVIEWER_H
+#pragma once
 
 #include "centralwidget.h"
 #include "helpviewer.h"
@@ -119,5 +118,3 @@ public:
 
 }   // namespace Internal
 }   // namespace Help
-
-#endif // TEXTBROWSERHELPVIEWER_H
diff --git a/src/plugins/help/xbelsupport.h b/src/plugins/help/xbelsupport.h
index 4927c34a6a..dedd112f7f 100644
--- a/src/plugins/help/xbelsupport.h
+++ b/src/plugins/help/xbelsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef XBELSUPPORT_H
-#define XBELSUPPORT_H
+#pragma once
 
 #include <QIcon>
 #include <QXmlStreamReader>
@@ -75,5 +74,3 @@ private:
 
     }   // Internal
 }   // Help
-
-#endif  // XBELSUPPORT_H
diff --git a/src/plugins/imageviewer/imageview.h b/src/plugins/imageviewer/imageview.h
index b120dac26d..9c9020c2c4 100644
--- a/src/plugins/imageviewer/imageview.h
+++ b/src/plugins/imageviewer/imageview.h
@@ -48,8 +48,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEW_H
-#define IMAGEVIEW_H
+#pragma once
 
 #include <QGraphicsView>
 
@@ -104,5 +103,3 @@ private:
 
 } // namespace Internal
 } // namespace ImageViewer
-
-#endif // IMAGEVIEW_H
diff --git a/src/plugins/imageviewer/imageviewer.h b/src/plugins/imageviewer/imageviewer.h
index 5d65c6760a..8820b6ca90 100644
--- a/src/plugins/imageviewer/imageviewer.h
+++ b/src/plugins/imageviewer/imageviewer.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEWER_H
-#define IMAGEVIEWER_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditor.h>
 #include <coreplugin/idocument.h>
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace ImageViewer
-
-#endif // IMAGEVIEWER_H
diff --git a/src/plugins/imageviewer/imageviewerconstants.h b/src/plugins/imageviewer/imageviewerconstants.h
index 3152295dd3..496d3a8d6a 100644
--- a/src/plugins/imageviewer/imageviewerconstants.h
+++ b/src/plugins/imageviewer/imageviewerconstants.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEWERCONSTANTS_H
-#define IMAGEVIEWERCONSTANTS_H
+#pragma once
 
 namespace ImageViewer {
 namespace Constants {
@@ -44,5 +43,3 @@ const char ACTION_TOGGLE_ANIMATION[] = "ImageViewer.ToggleAnimation";
 
 } // namespace Constants
 } // namespace ImageViewer
-
-#endif // IMAGEVIEWERCONSTANTS_H
diff --git a/src/plugins/imageviewer/imageviewerfactory.h b/src/plugins/imageviewer/imageviewerfactory.h
index d288ddaf4b..de307ebdfb 100644
--- a/src/plugins/imageviewer/imageviewerfactory.h
+++ b/src/plugins/imageviewer/imageviewerfactory.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEWERFACTORY_H
-#define IMAGEVIEWERFACTORY_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditorfactory.h>
 #include <coreplugin/editormanager/ieditor.h>
@@ -45,5 +44,3 @@ public:
 
 } // namespace Internal
 } // namespace ImageViewer
-
-#endif // IMAGEVIEWERFACTORY_H
diff --git a/src/plugins/imageviewer/imageviewerfile.h b/src/plugins/imageviewer/imageviewerfile.h
index 772dc42955..9442e7821d 100644
--- a/src/plugins/imageviewer/imageviewerfile.h
+++ b/src/plugins/imageviewer/imageviewerfile.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEWERFILE_H
-#define IMAGEVIEWERFILE_H
+#pragma once
 
 #include <coreplugin/idocument.h>
 
@@ -94,5 +93,3 @@ private:
 
 } // namespace Internal
 } // namespace ImageViewer
-
-#endif // IMAGEVIEWERFILE_H
diff --git a/src/plugins/imageviewer/imageviewerplugin.h b/src/plugins/imageviewer/imageviewerplugin.h
index 841295dd88..83868edc11 100644
--- a/src/plugins/imageviewer/imageviewerplugin.h
+++ b/src/plugins/imageviewer/imageviewerplugin.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMAGEVIEWERPLUGIN_H
-#define IMAGEVIEWERPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace ImageViewer
-
-#endif // IMAGEVIEWERPLUGIN_H
diff --git a/src/plugins/ios/iosanalyzesupport.h b/src/plugins/ios/iosanalyzesupport.h
index 2b18c5f693..2de2a1bb4e 100644
--- a/src/plugins/ios/iosanalyzesupport.h
+++ b/src/plugins/ios/iosanalyzesupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSANALYZESUPPORT_H
-#define IOSANALYZESUPPORT_H
+#pragma once
 
 #include "iosrunconfiguration.h"
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSANALYZESUPPORT_H
diff --git a/src/plugins/ios/iosbuildstep.h b/src/plugins/ios/iosbuildstep.h
index a89df243e8..9a08d43f9f 100644
--- a/src/plugins/ios/iosbuildstep.h
+++ b/src/plugins/ios/iosbuildstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSBUILDSTEP_H
-#define IOSBUILDSTEP_H
+#pragma once
 
 #include <projectexplorer/abstractprocessstep.h>
 
@@ -125,5 +124,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSBUILDSTEP_H
diff --git a/src/plugins/ios/iosconfigurations.h b/src/plugins/ios/iosconfigurations.h
index 94ebeb1384..15b457c17f 100644
--- a/src/plugins/ios/iosconfigurations.h
+++ b/src/plugins/ios/iosconfigurations.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSCONFIGURATIONS_H
-#define IOSCONFIGURATIONS_H
+#pragma once
 
 #include <projectexplorer/abi.h>
 #include <projectexplorer/toolchain.h>
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSCONFIGURATIONS_H
diff --git a/src/plugins/ios/iosconstants.h b/src/plugins/ios/iosconstants.h
index 559994491f..4bb8e9b832 100644
--- a/src/plugins/ios/iosconstants.h
+++ b/src/plugins/ios/iosconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSCONSTANTS_H
-#define IOSCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 #include <QLoggingCategory>
@@ -56,5 +55,3 @@ const char EXTRA_INFO_KEY[] = "extraInfo";
 
 } // namespace Constants;
 } // namespace Ios
-
-#endif  // IOSCONSTANTS_H
diff --git a/src/plugins/ios/iosdebugsupport.h b/src/plugins/ios/iosdebugsupport.h
index e5f12c7699..a645f2f1a5 100644
--- a/src/plugins/ios/iosdebugsupport.h
+++ b/src/plugins/ios/iosdebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEBUGSUPPORT_H
-#define IOSDEBUGSUPPORT_H
+#pragma once
 
 #include "iosrunconfiguration.h"
 #include <QProcess>
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDEBUGSUPPORT_H
diff --git a/src/plugins/ios/iosdeployconfiguration.h b/src/plugins/ios/iosdeployconfiguration.h
index 2fc7113814..2dc92fdfce 100644
--- a/src/plugins/ios/iosdeployconfiguration.h
+++ b/src/plugins/ios/iosdeployconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEPLOYCONFIGURATION_H
-#define IOSDEPLOYCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/deployconfiguration.h>
 
@@ -69,5 +68,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDEPLOYCONFIGURATION_H
diff --git a/src/plugins/ios/iosdeploystep.h b/src/plugins/ios/iosdeploystep.h
index d5064f3da7..f7b1efcb9d 100644
--- a/src/plugins/ios/iosdeploystep.h
+++ b/src/plugins/ios/iosdeploystep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEPLOYSTEP_H
-#define IOSDEPLOYSTEP_H
+#pragma once
 
 #include "iosconfigurations.h"
 #include "iosdevice.h"
@@ -110,5 +109,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDEPLOYSTEP_H
diff --git a/src/plugins/ios/iosdeploystepfactory.h b/src/plugins/ios/iosdeploystepfactory.h
index 63bc1e92ae..93ac9b784f 100644
--- a/src/plugins/ios/iosdeploystepfactory.h
+++ b/src/plugins/ios/iosdeploystepfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEPLOYSTEPFACTORY_H
-#define IOSDEPLOYSTEPFACTORY_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -55,5 +54,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDEPLOYSTEPFACTORY_H
diff --git a/src/plugins/ios/iosdeploystepwidget.h b/src/plugins/ios/iosdeploystepwidget.h
index 331857d2ce..38c91ab9b2 100644
--- a/src/plugins/ios/iosdeploystepwidget.h
+++ b/src/plugins/ios/iosdeploystepwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEPLOYSTEPWIDGET_H
-#define IOSDEPLOYSTEPWIDGET_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDEPLOYSTEPWIDGET_H
diff --git a/src/plugins/ios/iosdevice.h b/src/plugins/ios/iosdevice.h
index bac9c3d201..69c9e18e2e 100644
--- a/src/plugins/ios/iosdevice.h
+++ b/src/plugins/ios/iosdevice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEVICE_H
-#define IOSDEVICE_H
+#pragma once
 
 #include "iostoolhandler.h"
 
@@ -116,5 +115,3 @@ IosDevice::ConstPtr device(ProjectExplorer::Kit *);
 } // namespace Internal
 
 } // namespace Ios
-
-#endif // IOSDEVICE_H
diff --git a/src/plugins/ios/iosdevicefactory.h b/src/plugins/ios/iosdevicefactory.h
index 105b468d22..5e2e39b59f 100644
--- a/src/plugins/ios/iosdevicefactory.h
+++ b/src/plugins/ios/iosdevicefactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDEVICEFACTORY_H
-#define IOSDEVICEFACTORY_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicefactory.h>
 
@@ -52,5 +51,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDEVICEFACTORY_H
diff --git a/src/plugins/ios/iosdsymbuildstep.h b/src/plugins/ios/iosdsymbuildstep.h
index 034570275a..819347ce53 100644
--- a/src/plugins/ios/iosdsymbuildstep.h
+++ b/src/plugins/ios/iosdsymbuildstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSDSYMBUILDSTEP_H
-#define IOSDSYMBUILDSTEP_H
+#pragma once
 
 #include <projectexplorer/abstractprocessstep.h>
 
@@ -138,5 +137,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSDSYMBUILDSTEP_H
diff --git a/src/plugins/ios/iosmanager.h b/src/plugins/ios/iosmanager.h
index 0a3c36c24a..06c665e23e 100644
--- a/src/plugins/ios/iosmanager.h
+++ b/src/plugins/ios/iosmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSMANAGER_H
-#define IOSMANAGER_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -48,5 +47,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSMANAGER_H
diff --git a/src/plugins/ios/iosplugin.h b/src/plugins/ios/iosplugin.h
index bcef3298de..f53a6bb568 100644
--- a/src/plugins/ios/iosplugin.h
+++ b/src/plugins/ios/iosplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSPLUGIN_H
-#define IOSPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -45,5 +44,3 @@ private slots:
 };
 
 } // namespace Ios
-
-#endif // IOSPLUGIN_H
diff --git a/src/plugins/ios/iosprobe.h b/src/plugins/ios/iosprobe.h
index 9be5dd55e8..8d192b9611 100644
--- a/src/plugins/ios/iosprobe.h
+++ b/src/plugins/ios/iosprobe.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSPROBE_H
-#define IOSPROBE_H
+#pragma once
 #include <QSettings>
 #include <QSharedPointer>
 #include <QString>
@@ -76,5 +75,3 @@ private:
     QStringList m_developerPaths;
 };
 } // namespace Ios
-
-#endif // IOSPROBE_H
diff --git a/src/plugins/ios/iosqtversion.h b/src/plugins/ios/iosqtversion.h
index 16840cb892..6d4a093ba5 100644
--- a/src/plugins/ios/iosqtversion.h
+++ b/src/plugins/ios/iosqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSQTVERSION_H
-#define IOSQTVERSION_H
+#pragma once
 
 #include <qtsupport/baseqtversion.h>
 
@@ -59,5 +58,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSQTVERSION_H
diff --git a/src/plugins/ios/iosqtversionfactory.h b/src/plugins/ios/iosqtversionfactory.h
index 59a2657342..820f6bf329 100644
--- a/src/plugins/ios/iosqtversionfactory.h
+++ b/src/plugins/ios/iosqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSQTVERSIONFACTORY_H
-#define IOSQTVERSIONFACTORY_H
+#pragma once
 
 #include <qtsupport/qtversionfactory.h>
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSQTVERSIONFACTORY_H
diff --git a/src/plugins/ios/iosrunconfiguration.h b/src/plugins/ios/iosrunconfiguration.h
index d73c0c027e..e82a84a054 100644
--- a/src/plugins/ios/iosrunconfiguration.h
+++ b/src/plugins/ios/iosrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSRUNCONFIGURATION_H
-#define IOSRUNCONFIGURATION_H
+#pragma once
 
 #include "iosconstants.h"
 #include "iosconfigurations.h"
@@ -93,5 +92,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSRUNCONFIGURATION_H
diff --git a/src/plugins/ios/iosruncontrol.h b/src/plugins/ios/iosruncontrol.h
index e265025640..97f5784d69 100644
--- a/src/plugins/ios/iosruncontrol.h
+++ b/src/plugins/ios/iosruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSRUNCONTROL_H
-#define IOSRUNCONTROL_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSRUNCONTROL_H
diff --git a/src/plugins/ios/iosrunfactories.h b/src/plugins/ios/iosrunfactories.h
index 0c0d9c16fa..325deb8d87 100644
--- a/src/plugins/ios/iosrunfactories.h
+++ b/src/plugins/ios/iosrunfactories.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSRUNFACTORIES_H
-#define IOSRUNFACTORIES_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 #include <qmakeprojectmanager/qmakerunconfigurationfactory.h>
@@ -87,5 +86,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif  // IOSRUNFACTORIES_H
diff --git a/src/plugins/ios/iosrunner.h b/src/plugins/ios/iosrunner.h
index b00b5f9b4e..95c1888cda 100644
--- a/src/plugins/ios/iosrunner.h
+++ b/src/plugins/ios/iosrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSRUNNER_H
-#define IOSRUNNER_H
+#pragma once
 
 #include "iosconfigurations.h"
 #include "iostoolhandler.h"
@@ -100,5 +99,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSRUNNER_H
diff --git a/src/plugins/ios/iossettingspage.h b/src/plugins/ios/iossettingspage.h
index b71f820058..0f2c48e885 100644
--- a/src/plugins/ios/iossettingspage.h
+++ b/src/plugins/ios/iossettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSSETTINGSPAGE_H
-#define IOSSETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSSETTINGSPAGE_H
diff --git a/src/plugins/ios/iossettingswidget.h b/src/plugins/ios/iossettingswidget.h
index c15608b294..f42134e493 100644
--- a/src/plugins/ios/iossettingswidget.h
+++ b/src/plugins/ios/iossettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSSETTINGSWIDGET_H
-#define IOSSETTINGSWIDGET_H
+#pragma once
 
 #include "iosconfigurations.h"
 
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSSETTINGSWIDGET_H
diff --git a/src/plugins/ios/iossimulator.h b/src/plugins/ios/iossimulator.h
index 1e3c614698..3e7e7444d1 100644
--- a/src/plugins/ios/iossimulator.h
+++ b/src/plugins/ios/iossimulator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSSIMULATOR_H
-#define IOSSIMULATOR_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 #include <utils/fileutils.h>
@@ -103,5 +102,3 @@ IosSimulator::ConstPtr simulator(ProjectExplorer::Kit *kit);
 } // namespace Ios
 
 Q_DECLARE_METATYPE(Ios::Internal::IosDeviceType)
-
-#endif // IOSSIMULATOR_H
diff --git a/src/plugins/ios/iossimulatorfactory.h b/src/plugins/ios/iossimulatorfactory.h
index 395c72e8a2..0b8d222235 100644
--- a/src/plugins/ios/iossimulatorfactory.h
+++ b/src/plugins/ios/iossimulatorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSSIMULATORFACTORY_H
-#define IOSSIMULATORFACTORY_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicefactory.h>
 
@@ -48,5 +47,3 @@ public:
 
 } // namespace Internal
 } // namespace Ios
-
-#endif // IOSSIMULATORFACTORY_H
diff --git a/src/plugins/ios/iostoolhandler.h b/src/plugins/ios/iostoolhandler.h
index 1649997cc2..a3eba3476a 100644
--- a/src/plugins/ios/iostoolhandler.h
+++ b/src/plugins/ios/iostoolhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSTOOLHANDLER_H
-#define IOSTOOLHANDLER_H
+#pragma once
 
 #include <QObject>
 #include <QMap>
@@ -95,5 +94,3 @@ private:
 };
 
 } // namespace Ios
-
-#endif // IOSTOOLHANDLER_H
diff --git a/src/plugins/macros/actionmacrohandler.h b/src/plugins/macros/actionmacrohandler.h
index 8c7a87d4b2..77c766d682 100644
--- a/src/plugins/macros/actionmacrohandler.h
+++ b/src/plugins/macros/actionmacrohandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ACTIOMACROHANDLER_H
-#define ACTIOMACROHANDLER_H
+#pragma once
 
 #include "imacrohandler.h"
 
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // ACTIOMACROHANDLER_H
diff --git a/src/plugins/macros/findmacrohandler.h b/src/plugins/macros/findmacrohandler.h
index 49503eba5d..78eb338a47 100644
--- a/src/plugins/macros/findmacrohandler.h
+++ b/src/plugins/macros/findmacrohandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDMACROHANDLER_H
-#define FINDMACROHANDLER_H
+#pragma once
 
 #include "imacrohandler.h"
 
@@ -61,5 +60,3 @@ private slots:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // FINDMACROHANDLER_H
diff --git a/src/plugins/macros/imacrohandler.h b/src/plugins/macros/imacrohandler.h
index 403aa3e800..e05e4c063c 100644
--- a/src/plugins/macros/imacrohandler.h
+++ b/src/plugins/macros/imacrohandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_IMACROHANDLER_H
-#define MACROSPLUGIN_IMACROHANDLER_H
+#pragma once
 
 #include <QObject>
 
@@ -65,5 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_IMACROHANDLER_H
diff --git a/src/plugins/macros/macro.h b/src/plugins/macros/macro.h
index 1c81acbb30..d2f4befa45 100644
--- a/src/plugins/macros/macro.h
+++ b/src/plugins/macros/macro.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACRO_H
-#define MACROSPLUGIN_MACRO_H
+#pragma once
 
 #include <QList>
 #include <QString>
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACRO_H
diff --git a/src/plugins/macros/macroevent.h b/src/plugins/macros/macroevent.h
index 043e860334..72ae9942d4 100644
--- a/src/plugins/macros/macroevent.h
+++ b/src/plugins/macros/macroevent.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROEVENT_H
-#define MACROSPLUGIN_MACROEVENT_H
+#pragma once
 
 #include <coreplugin/id.h>
 
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROEVENT_H
diff --git a/src/plugins/macros/macrolocatorfilter.h b/src/plugins/macros/macrolocatorfilter.h
index 32264c20d8..a20b296ce6 100644
--- a/src/plugins/macros/macrolocatorfilter.h
+++ b/src/plugins/macros/macrolocatorfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROLOCATORFILTER_H
-#define MACROSPLUGIN_MACROLOCATORFILTER_H
+#pragma once
 
 #include <coreplugin/locator/ilocatorfilter.h>
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROLOCATORFILTER_H
diff --git a/src/plugins/macros/macromanager.h b/src/plugins/macros/macromanager.h
index e88870d448..2d1c8b6596 100644
--- a/src/plugins/macros/macromanager.h
+++ b/src/plugins/macros/macromanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROMANAGER_H
-#define MACROSPLUGIN_MACROMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QMap>
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROMANAGER_H
diff --git a/src/plugins/macros/macrooptionspage.h b/src/plugins/macros/macrooptionspage.h
index 7d13062c9b..88b44f32f5 100644
--- a/src/plugins/macros/macrooptionspage.h
+++ b/src/plugins/macros/macrooptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROOPTIONSPAGE_H
-#define MACROSPLUGIN_MACROOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROOPTIONSPAGE_H
diff --git a/src/plugins/macros/macrooptionswidget.h b/src/plugins/macros/macrooptionswidget.h
index 156aff462a..135d01b858 100644
--- a/src/plugins/macros/macrooptionswidget.h
+++ b/src/plugins/macros/macrooptionswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROOPTIONSWIDGET_H
-#define MACROSPLUGIN_MACROOPTIONSWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROOPTIONSWIDGET_H
diff --git a/src/plugins/macros/macrosconstants.h b/src/plugins/macros/macrosconstants.h
index 491e34a222..056677b2b7 100644
--- a/src/plugins/macros/macrosconstants.h
+++ b/src/plugins/macros/macrosconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROSCONSTANTS_H
-#define MACROSPLUGIN_MACROSCONSTANTS_H
+#pragma once
 
 namespace Macros {
 namespace Constants {
@@ -46,5 +45,3 @@ const char M_EXTENSION[] = "mac";
 
 } // namespace Constants
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROSCONSTANTS_H
diff --git a/src/plugins/macros/macrosplugin.h b/src/plugins/macros/macrosplugin.h
index d202b619f2..dcb14694b8 100644
--- a/src/plugins/macros/macrosplugin.h
+++ b/src/plugins/macros/macrosplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROSPLUGIN_H
-#define MACROSPLUGIN_MACROSPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROSPLUGIN_H
diff --git a/src/plugins/macros/macrotextfind.h b/src/plugins/macros/macrotextfind.h
index 71e65028ac..fd1f9d1638 100644
--- a/src/plugins/macros/macrotextfind.h
+++ b/src/plugins/macros/macrotextfind.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_MACROTEXTFIND_H
-#define MACROSPLUGIN_MACROTEXTFIND_H
+#pragma once
 
 #include <coreplugin/find/ifindsupport.h>
 
@@ -74,5 +73,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_MACROTEXTFIND_H
diff --git a/src/plugins/macros/savedialog.h b/src/plugins/macros/savedialog.h
index 7ad3695665..a45c04dcfc 100644
--- a/src/plugins/macros/savedialog.h
+++ b/src/plugins/macros/savedialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MACROSPLUGIN_SAVEDIALOG_H
-#define MACROSPLUGIN_SAVEDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // MACROSPLUGIN_SAVEDIALOG_H
diff --git a/src/plugins/macros/texteditormacrohandler.h b/src/plugins/macros/texteditormacrohandler.h
index fc39522af2..a213425a35 100644
--- a/src/plugins/macros/texteditormacrohandler.h
+++ b/src/plugins/macros/texteditormacrohandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORMACROHANDLER_H
-#define TEXTEDITORMACROHANDLER_H
+#pragma once
 
 #include "imacrohandler.h"
 
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace Macros
-
-#endif // TEXTEDITORMACROHANDLER_H
diff --git a/src/plugins/modeleditor/actionhandler.h b/src/plugins/modeleditor/actionhandler.h
index b595db1436..5bd2ce0e91 100644
--- a/src/plugins/modeleditor/actionhandler.h
+++ b/src/plugins/modeleditor/actionhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ACTIONHANDLER_H
-#define ACTIONHANDLER_H
+#pragma once
 
 #include <QObject>
 
@@ -94,5 +93,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // ACTIONHANDLER_H
diff --git a/src/plugins/modeleditor/classviewcontroller.h b/src/plugins/modeleditor/classviewcontroller.h
index 7af4ad6238..4bf67d480e 100644
--- a/src/plugins/modeleditor/classviewcontroller.h
+++ b/src/plugins/modeleditor/classviewcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSVIEWCONTROLLER_H
-#define CLASSVIEWCONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -50,5 +49,3 @@ public:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // CLASSVIEWCONTROLLER_H
diff --git a/src/plugins/modeleditor/componentviewcontroller.h b/src/plugins/modeleditor/componentviewcontroller.h
index df46a4f859..6d73a6cdcd 100644
--- a/src/plugins/modeleditor/componentviewcontroller.h
+++ b/src/plugins/modeleditor/componentviewcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTVIEWCONTROLLER_H
-#define COMPONENTVIEWCONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // COMPONENTVIEWCONTROLLER_H
diff --git a/src/plugins/modeleditor/diagramsviewmanager.h b/src/plugins/modeleditor/diagramsviewmanager.h
index 7e75410dca..0811d6cd70 100644
--- a/src/plugins/modeleditor/diagramsviewmanager.h
+++ b/src/plugins/modeleditor/diagramsviewmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIAGRAMSVIEWMANAGER_H
-#define DIAGRAMSVIEWMANAGER_H
+#pragma once
 
 #include <QObject>
 #include "qmt/diagram_ui/diagramsviewinterface.h"
@@ -65,5 +64,3 @@ public:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // DIAGRAMSVIEWMANAGER_H
diff --git a/src/plugins/modeleditor/dragtool.h b/src/plugins/modeleditor/dragtool.h
index 08939e0be0..5764f97ec6 100644
--- a/src/plugins/modeleditor/dragtool.h
+++ b/src/plugins/modeleditor/dragtool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DRAGTOOL_H
-#define DRAGTOOL_H
+#pragma once
 
 #include <QWidget>
 #include <QIcon>
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // DRAGTOOL_H
diff --git a/src/plugins/modeleditor/editordiagramview.h b/src/plugins/modeleditor/editordiagramview.h
index f637941db6..f0183d1dd7 100644
--- a/src/plugins/modeleditor/editordiagramview.h
+++ b/src/plugins/modeleditor/editordiagramview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EDITORDIAGRAMVIEW_H
-#define EDITORDIAGRAMVIEW_H
+#pragma once
 
 #include "qmt/diagram_widgets_ui/diagramview.h"
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // EDITORDIAGRAMVIEW_H
diff --git a/src/plugins/modeleditor/elementtasks.h b/src/plugins/modeleditor/elementtasks.h
index 1b29cc6b85..9e38b43abe 100644
--- a/src/plugins/modeleditor/elementtasks.h
+++ b/src/plugins/modeleditor/elementtasks.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ELEMENTTASKS_H
-#define ELEMENTTASKS_H
+#pragma once
 
 #include "qmt/tasks/ielementtasks.h"
 
@@ -89,5 +88,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // ELEMENTTASKS_H
diff --git a/src/plugins/modeleditor/extdocumentcontroller.h b/src/plugins/modeleditor/extdocumentcontroller.h
index ab6d6ac2f7..28f3bed9ed 100644
--- a/src/plugins/modeleditor/extdocumentcontroller.h
+++ b/src/plugins/modeleditor/extdocumentcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTDOCUMENTCONTROLLER_H
-#define EXTDOCUMENTCONTROLLER_H
+#pragma once
 
 #include "qmt/document_controller/documentcontroller.h"
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // EXTDOCUMENTCONTROLLER_H
diff --git a/src/plugins/modeleditor/extpropertiesmview.h b/src/plugins/modeleditor/extpropertiesmview.h
index 1ad45aff81..673fcd9d39 100644
--- a/src/plugins/modeleditor/extpropertiesmview.h
+++ b/src/plugins/modeleditor/extpropertiesmview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTPROPERTIESMVIEW_H
-#define EXTPROPERTIESMVIEW_H
+#pragma once
 
 #include "qmt/model_widgets_ui/propertiesviewmview.h"
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Interal
 } // namespace ModelEditor
-
-#endif // EXTPROPERTIESMVIEW_H
diff --git a/src/plugins/modeleditor/jsextension.h b/src/plugins/modeleditor/jsextension.h
index 3a969f54af..be2479fd68 100644
--- a/src/plugins/modeleditor/jsextension.h
+++ b/src/plugins/modeleditor/jsextension.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSEXTENSION_H
-#define JSEXTENSION_H
+#pragma once
 
 #include <QObject>
 
@@ -44,5 +43,3 @@ public:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // JSEXTENSION_H
diff --git a/src/plugins/modeleditor/modeldocument.h b/src/plugins/modeleditor/modeldocument.h
index f5bc05022c..5998065157 100644
--- a/src/plugins/modeleditor/modeldocument.h
+++ b/src/plugins/modeleditor/modeldocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELDOCUMENT_H
-#define MODELDOCUMENT_H
+#pragma once
 
 #include <coreplugin/idocument.h>
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // MODELDOCUMENT_H
diff --git a/src/plugins/modeleditor/modeleditor.h b/src/plugins/modeleditor/modeleditor.h
index b8ab618138..5d741f1008 100644
--- a/src/plugins/modeleditor/modeleditor.h
+++ b/src/plugins/modeleditor/modeleditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELDIAGRAMEDITOR_H
-#define MODELDIAGRAMEDITOR_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditor.h>
 
@@ -154,5 +153,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // MODELDIAGRAMEDITOR_H
diff --git a/src/plugins/modeleditor/modeleditor_constants.h b/src/plugins/modeleditor/modeleditor_constants.h
index 32e8759b8e..a1314874f3 100644
--- a/src/plugins/modeleditor/modeleditor_constants.h
+++ b/src/plugins/modeleditor/modeleditor_constants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELEDITORCONSTANTS_H
-#define MODELEDITORCONSTANTS_H
+#pragma once
 
 namespace ModelEditor {
 namespace Constants {
@@ -63,5 +62,3 @@ const char SETTINGS_RIGHT_HORIZ_SPLITTER[] = "RightHorizSplitter";
 
 } // namespace Constants
 } // namespace ModelEditor
-
-#endif // MODELEDITORCONSTANTS_H
diff --git a/src/plugins/modeleditor/modeleditor_global.h b/src/plugins/modeleditor/modeleditor_global.h
index 054225f141..0327c570e3 100644
--- a/src/plugins/modeleditor/modeleditor_global.h
+++ b/src/plugins/modeleditor/modeleditor_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELEDITOR_GLOBAL_H
-#define MODELEDITOR_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,5 +32,3 @@
 #else
 #  define MODELEDITOR_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // MODELEDITOR_GLOBAL_H
diff --git a/src/plugins/modeleditor/modeleditor_plugin.h b/src/plugins/modeleditor/modeleditor_plugin.h
index 0dcf89642d..5ab927361d 100644
--- a/src/plugins/modeleditor/modeleditor_plugin.h
+++ b/src/plugins/modeleditor/modeleditor_plugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELEDITORPLUGIN_H
-#define MODELEDITORPLUGIN_H
+#pragma once
 
 #include "modeleditor_global.h"
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // MODELEDITORPLUGIN_H
diff --git a/src/plugins/modeleditor/modeleditorfactory.h b/src/plugins/modeleditor/modeleditorfactory.h
index 797b06a311..972a1ae44e 100644
--- a/src/plugins/modeleditor/modeleditorfactory.h
+++ b/src/plugins/modeleditor/modeleditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STRUCTUREDIAGRAMEDITORFACTORY_H
-#define STRUCTUREDIAGRAMEDITORFACTORY_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditorfactory.h>
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // STRUCTUREDIAGRAMEDITORFACTORY_H
diff --git a/src/plugins/modeleditor/modelindexer.h b/src/plugins/modeleditor/modelindexer.h
index e7d6aaad3a..19694e60b1 100644
--- a/src/plugins/modeleditor/modelindexer.h
+++ b/src/plugins/modeleditor/modelindexer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELINDEXER_H
-#define MODELINDEXER_H
+#pragma once
 
 #include <QObject>
 
@@ -86,5 +85,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // MODELINDEXER_H
diff --git a/src/plugins/modeleditor/modelsmanager.h b/src/plugins/modeleditor/modelsmanager.h
index fb93f7e59c..9232f16df3 100644
--- a/src/plugins/modeleditor/modelsmanager.h
+++ b/src/plugins/modeleditor/modelsmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELSMANAGER_H
-#define MODELSMANAGER_H
+#pragma once
 
 #include <QObject>
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // MODELSMANAGER_H
diff --git a/src/plugins/modeleditor/openelementvisitor.h b/src/plugins/modeleditor/openelementvisitor.h
index dcd5fca2d7..48e0408076 100644
--- a/src/plugins/modeleditor/openelementvisitor.h
+++ b/src/plugins/modeleditor/openelementvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPENELEMENTVISITOR_H
-#define OPENELEMENTVISITOR_H
+#pragma once
 
 #include "qmt/diagram/dconstvisitor.h"
 #include "qmt/model/mconstvisitor.h"
@@ -87,5 +86,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // OPENELEMENTVISITOR_H
diff --git a/src/plugins/modeleditor/pxnodecontroller.h b/src/plugins/modeleditor/pxnodecontroller.h
index 5f16ab632a..7bfcbd41aa 100644
--- a/src/plugins/modeleditor/pxnodecontroller.h
+++ b/src/plugins/modeleditor/pxnodecontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PXNODECONTROLLER_H
-#define PXNODECONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // PXNODECONTROLLER_H
diff --git a/src/plugins/modeleditor/pxnodeutilities.h b/src/plugins/modeleditor/pxnodeutilities.h
index 4d80ff1c51..1aea2f1b9a 100644
--- a/src/plugins/modeleditor/pxnodeutilities.h
+++ b/src/plugins/modeleditor/pxnodeutilities.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PXNODEUTILITIES_H
-#define PXNODEUTILITIES_H
+#pragma once
 
 #include <QObject>
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // PXNODEUTILITIES_H
diff --git a/src/plugins/modeleditor/settingscontroller.h b/src/plugins/modeleditor/settingscontroller.h
index 63080b820f..9400cd6282 100644
--- a/src/plugins/modeleditor/settingscontroller.h
+++ b/src/plugins/modeleditor/settingscontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGS_H
-#define SETTINGS_H
+#pragma once
 
 #include <QObject>
 
@@ -56,5 +55,3 @@ public:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // SETTINGS_H
diff --git a/src/plugins/modeleditor/uicontroller.h b/src/plugins/modeleditor/uicontroller.h
index 8a48c79bd4..76496be10a 100644
--- a/src/plugins/modeleditor/uicontroller.h
+++ b/src/plugins/modeleditor/uicontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UICONTROLLER_H
-#define UICONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace ModelEditor
-
-#endif // UICONTROLLER_H
diff --git a/src/plugins/projectexplorer/buildconfiguration.h b/src/plugins/projectexplorer/buildconfiguration.h
index 741227c03a..53408c1fc9 100644
--- a/src/plugins/projectexplorer/buildconfiguration.h
+++ b/src/plugins/projectexplorer/buildconfiguration.h
@@ -152,4 +152,3 @@ signals:
 };
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/projectexplorer/buildsteplist.h b/src/plugins/projectexplorer/buildsteplist.h
index a24e8190bf..57e34ef8a9 100644
--- a/src/plugins/projectexplorer/buildsteplist.h
+++ b/src/plugins/projectexplorer/buildsteplist.h
@@ -78,4 +78,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/projectexplorer/customwizard/customwizard.h b/src/plugins/projectexplorer/customwizard/customwizard.h
index 28eee0ef89..beeff9825a 100644
--- a/src/plugins/projectexplorer/customwizard/customwizard.h
+++ b/src/plugins/projectexplorer/customwizard/customwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIZARD_H
-#define CUSTOMWIZARD_H
+#pragma once
 
 #include "../projectexplorer_export.h"
 
@@ -151,5 +150,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // CUSTOMWIZARD_H
diff --git a/src/plugins/projectexplorer/customwizard/customwizardpage.h b/src/plugins/projectexplorer/customwizard/customwizardpage.h
index 40f96de412..87077e875b 100644
--- a/src/plugins/projectexplorer/customwizard/customwizardpage.h
+++ b/src/plugins/projectexplorer/customwizard/customwizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIZARDPAGE_H
-#define CUSTOMWIZARDPAGE_H
+#pragma once
 
 #include <QComboBox>
 #include <QCheckBox>
@@ -135,5 +134,3 @@ private:
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // CUSTOMWIZARDPAGE_H
diff --git a/src/plugins/projectexplorer/customwizard/customwizardparameters.h b/src/plugins/projectexplorer/customwizard/customwizardparameters.h
index 01916ebcd6..0dd10a8df3 100644
--- a/src/plugins/projectexplorer/customwizard/customwizardparameters.h
+++ b/src/plugins/projectexplorer/customwizard/customwizardparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIZARDPARAMETERS_H
-#define CUSTOMWIZARDPARAMETERS_H
+#pragma once
 
 #include <coreplugin/iwizardfactory.h>
 
@@ -162,5 +161,3 @@ extern const char customWizardFileOpenProjectAttributeC[];
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // CUSTOMWIZARDPARAMETERS_H
diff --git a/src/plugins/projectexplorer/customwizard/customwizardscriptgenerator.h b/src/plugins/projectexplorer/customwizard/customwizardscriptgenerator.h
index a36c4edb22..4581c88cc4 100644
--- a/src/plugins/projectexplorer/customwizard/customwizardscriptgenerator.h
+++ b/src/plugins/projectexplorer/customwizard/customwizardscriptgenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIZARDSCRIPTGENERATOR_H
-#define CUSTOMWIZARDSCRIPTGENERATOR_H
+#pragma once
 
 #include <QMap>
 #include <QStringList>
@@ -56,5 +55,3 @@ bool runCustomWizardGeneratorScript(const QString &targetPath,
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // CUSTOMWIZARDSCRIPTGENERATOR_H
diff --git a/src/plugins/projectexplorer/deployconfiguration.h b/src/plugins/projectexplorer/deployconfiguration.h
index 5648cbe15c..31bff0158a 100644
--- a/src/plugins/projectexplorer/deployconfiguration.h
+++ b/src/plugins/projectexplorer/deployconfiguration.h
@@ -130,4 +130,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/projectexplorer/ioutputparser.h b/src/plugins/projectexplorer/ioutputparser.h
index 92bcbb0f16..2ab74acbd5 100644
--- a/src/plugins/projectexplorer/ioutputparser.h
+++ b/src/plugins/projectexplorer/ioutputparser.h
@@ -74,4 +74,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.h b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.h
index ffa5031346..debc1e6393 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONFIELDPAGE_H
-#define JSONFIELDPAGE_H
+#pragma once
 
 #include "../projectexplorer_export.h"
 
@@ -140,5 +139,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONFIELDPAGE_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h
index 7478a3020f..4a03d114fc 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONFIELDPAGE_P_H
-#define JSONFIELDPAGE_P_H
+#pragma once
 
 #include "jsonfieldpage.h"
 
@@ -208,5 +207,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONFIELDPAGE_P_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonfilepage.h b/src/plugins/projectexplorer/jsonwizard/jsonfilepage.h
index 9753171cec..744e81e369 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonfilepage.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonfilepage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONFILEPAGE_H
-#define JSONFILEPAGE_H
+#pragma once
 
 #include <utils/filewizardpage.h>
 
@@ -43,5 +42,3 @@ public:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONFILEPAGE_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonkitspage.h b/src/plugins/projectexplorer/jsonwizard/jsonkitspage.h
index 5924310eb9..28ac2af4f1 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonkitspage.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonkitspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONKITSPAGE_H
-#define JSONKITSPAGE_H
+#pragma once
 
 #include "jsonwizard.h"
 #include "../targetsetuppage.h"
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONKITSPAGE_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonprojectpage.h b/src/plugins/projectexplorer/jsonwizard/jsonprojectpage.h
index 8a7e3d9c90..17ecc63e80 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonprojectpage.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonprojectpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONPROJECTPAGE_H
-#define JSONPROJECTPAGE_H
+#pragma once
 
 #include <utils/projectintropage.h>
 
@@ -45,5 +44,3 @@ public:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONPROJECTPAGE_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonsummarypage.h b/src/plugins/projectexplorer/jsonwizard/jsonsummarypage.h
index 09e0677537..9ca0ad20c5 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonsummarypage.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonsummarypage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONSUMMARYPAGE_H
-#define JSONSUMMARYPAGE_H
+#pragma once
 
 #include "../projectwizardpage.h"
 #include "jsonwizard.h"
@@ -63,5 +62,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONSUMMARYPAGE_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizard.h b/src/plugins/projectexplorer/jsonwizard/jsonwizard.h
index c550e4008a..5fdfe27561 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizard.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARD_H
-#define JSONWIZARD_H
+#pragma once
 
 #include "../projectexplorer_export.h"
 
@@ -129,5 +128,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONWIZARD_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.h b/src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.h
index 949f371fd5..7ae4a43f6d 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARDFACTORY_H
-#define JSONWIZARDFACTORY_H
+#pragma once
 
 #include "../projectexplorer_export.h"
 
@@ -123,5 +122,3 @@ private:
 };
 
 } //namespace ProjectExplorer
-
-#endif // JSONWIZARDFACTORY_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardfilegenerator.h b/src/plugins/projectexplorer/jsonwizard/jsonwizardfilegenerator.h
index cf0a25b60a..5f9597079b 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardfilegenerator.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardfilegenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARDFILEGENERATOR_H
-#define JSONWIZARDFILEGENERATOR_H
+#pragma once
 
 #include "jsonwizardgeneratorfactory.h"
 
@@ -68,5 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // JSONWIZARDFILEGENERATOR_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.h b/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.h
index 3e4e2ba296..9621e5beae 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardgeneratorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARDGENERATORFACTORY_H
-#define JSONWIZARDGENERATORFACTORY_H
+#pragma once
 
 #include "../projectexplorer_export.h"
 
@@ -119,5 +118,3 @@ public:
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // JSONWIZARDGENERATORFACTORY_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory.h b/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory.h
index ee676d938e..5752b3b4cb 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARDPAGEFACTORY_H
-#define JSONWIZARDPAGEFACTORY_H
+#pragma once
 
 #include "../projectexplorer_export.h"
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // JSONWIZARDPAGEFACTORY_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory_p.h b/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory_p.h
index 31ea597ecf..fe8f13221c 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory_p.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardpagefactory_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARDPAGEFACTORY_P_H
-#define JSONWIZARDPAGEFACTORY_P_H
+#pragma once
 
 #include "jsonwizardpagefactory.h"
 
@@ -78,5 +77,3 @@ public:
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // JSONWIZARDPAGEFACTORY_P_H
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizardscannergenerator.h b/src/plugins/projectexplorer/jsonwizard/jsonwizardscannergenerator.h
index a6e395fccb..01930a847d 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizardscannergenerator.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizardscannergenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef JSONWIZARDSCANNERGENERATOR_H
-#define JSONWIZARDSCANNERGENERATOR_H
+#pragma once
 
 #include "jsonwizardgeneratorfactory.h"
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // JSONWIZARDSCANNERGENERATOR_H
diff --git a/src/plugins/projectexplorer/pluginfilefactory.h b/src/plugins/projectexplorer/pluginfilefactory.h
index 7440106ded..725b1f8a9c 100644
--- a/src/plugins/projectexplorer/pluginfilefactory.h
+++ b/src/plugins/projectexplorer/pluginfilefactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINFILEFACTORY_H
-#define PLUGINFILEFACTORY_H
+#pragma once
 
 #include <coreplugin/idocumentfactory.h>
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace ProjectExplorer
-
-#endif // PLUGINFILEFACTORY
diff --git a/src/plugins/projectexplorer/projectconfiguration.h b/src/plugins/projectexplorer/projectconfiguration.h
index 9f0103eae2..d784c00b75 100644
--- a/src/plugins/projectexplorer/projectconfiguration.h
+++ b/src/plugins/projectexplorer/projectconfiguration.h
@@ -81,4 +81,3 @@ PROJECTEXPLORER_EXPORT Core::Id idFromMap(const QVariantMap &map);
 PROJECTEXPLORER_EXPORT QString displayNameFromMap(const QVariantMap &map);
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/projectexplorer/runconfiguration.h b/src/plugins/projectexplorer/runconfiguration.h
index c5b6e2f82f..ddd9e222f4 100644
--- a/src/plugins/projectexplorer/runconfiguration.h
+++ b/src/plugins/projectexplorer/runconfiguration.h
@@ -405,4 +405,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/projectexplorer/target.h b/src/plugins/projectexplorer/target.h
index b3498b0a29..c83da9c1a2 100644
--- a/src/plugins/projectexplorer/target.h
+++ b/src/plugins/projectexplorer/target.h
@@ -174,4 +174,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
diff --git a/src/plugins/pythoneditor/pythoneditor.h b/src/plugins/pythoneditor/pythoneditor.h
index 5ac8a7413a..914b28000a 100644
--- a/src/plugins/pythoneditor/pythoneditor.h
+++ b/src/plugins/pythoneditor/pythoneditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONEDITOR_EDITOR_H
-#define PYTHONEDITOR_EDITOR_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace PythonEditor
-
-#endif // PYTHONEDITOR_EDITOR_H
diff --git a/src/plugins/pythoneditor/pythoneditorconstants.h b/src/plugins/pythoneditor/pythoneditorconstants.h
index 24a8cff3ef..a84281aaa5 100644
--- a/src/plugins/pythoneditor/pythoneditorconstants.h
+++ b/src/plugins/pythoneditor/pythoneditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONEDITOR_CONSTANTS_H
-#define PYTHONEDITOR_CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -43,5 +42,3 @@ const char C_PY_MIME_ICON[] = "text-x-python";
 
 } // namespace Constants
 } // namespace PythonEditor
-
-#endif // PYTHONEDITOR_CONSTANTS_H
diff --git a/src/plugins/pythoneditor/pythoneditorplugin.h b/src/plugins/pythoneditor/pythoneditorplugin.h
index 0e6aa8a5aa..ae2634c188 100644
--- a/src/plugins/pythoneditor/pythoneditorplugin.h
+++ b/src/plugins/pythoneditor/pythoneditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONEDITOR_PLUGIN_H
-#define PYTHONEDITOR_PLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <projectexplorer/runconfiguration.h>
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace PythonEditor
-
-#endif // PYTHONEDITOR_PLUGIN_H
diff --git a/src/plugins/pythoneditor/tools/lexical/pythonformattoken.h b/src/plugins/pythoneditor/tools/lexical/pythonformattoken.h
index 528d2fbd40..9ae0d4c21c 100644
--- a/src/plugins/pythoneditor/tools/lexical/pythonformattoken.h
+++ b/src/plugins/pythoneditor/tools/lexical/pythonformattoken.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONFORMATTOKEN_H
-#define PYTHONFORMATTOKEN_H
+#pragma once
 
 #include <stdlib.h>
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace PythonEditor
-
-#endif // PYTHONFORMATTOKEN_H
diff --git a/src/plugins/pythoneditor/tools/lexical/pythonscanner.h b/src/plugins/pythoneditor/tools/lexical/pythonscanner.h
index 831184e7b7..0b8dea5800 100644
--- a/src/plugins/pythoneditor/tools/lexical/pythonscanner.h
+++ b/src/plugins/pythoneditor/tools/lexical/pythonscanner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONSCANNER_H
-#define PYTHONSCANNER_H
+#pragma once
 
 #include "pythonformattoken.h"
 #include "sourcecodestream.h"
@@ -85,5 +84,3 @@ private:
 
 } // namespace Internal
 } // namespace PythonEditor
-
-#endif // PYTHONSCANNER_H
diff --git a/src/plugins/pythoneditor/tools/lexical/sourcecodestream.h b/src/plugins/pythoneditor/tools/lexical/sourcecodestream.h
index 3326e4f5cf..7c8183b453 100644
--- a/src/plugins/pythoneditor/tools/lexical/sourcecodestream.h
+++ b/src/plugins/pythoneditor/tools/lexical/sourcecodestream.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONEDITOR_SOURCECODESTREAM_H
-#define PYTHONEDITOR_SOURCECODESTREAM_H
+#pragma once
 
 #include <QString>
 
@@ -94,5 +93,3 @@ private:
 
 } // namespace Internal
 } // namespace PythonEditor
-
-#endif // PYTHONEDITOR_SOURCECODESTREAM_H
diff --git a/src/plugins/pythoneditor/tools/pythonhighlighter.h b/src/plugins/pythoneditor/tools/pythonhighlighter.h
index e78038ca17..6f78a46624 100644
--- a/src/plugins/pythoneditor/tools/pythonhighlighter.h
+++ b/src/plugins/pythoneditor/tools/pythonhighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONHIGHLIGHTER_H
-#define PYTHONHIGHLIGHTER_H
+#pragma once
 
 #include <texteditor/syntaxhighlighter.h>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace PythonEditor
-
-#endif // PYTHONHIGHLIGHTER_H
diff --git a/src/plugins/pythoneditor/tools/pythonindenter.h b/src/plugins/pythoneditor/tools/pythonindenter.h
index 6846aa1ba8..c44a002439 100644
--- a/src/plugins/pythoneditor/tools/pythonindenter.h
+++ b/src/plugins/pythoneditor/tools/pythonindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PYTHONINDENTER_H
-#define PYTHONINDENTER_H
+#pragma once
 
 #include <texteditor/indenter.h>
 #include <QStringList>
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace PythonEditor
-
-#endif // PYTHONINDENTER_H
diff --git a/src/plugins/qbsprojectmanager/customqbspropertiesdialog.h b/src/plugins/qbsprojectmanager/customqbspropertiesdialog.h
index 56a33c22b2..0668f77720 100644
--- a/src/plugins/qbsprojectmanager/customqbspropertiesdialog.h
+++ b/src/plugins/qbsprojectmanager/customqbspropertiesdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTC_CUSTOMQBSPROPERTIESDIALOG_H
-#define QTC_CUSTOMQBSPROPERTIESDIALOG_H
+#pragma once
 
 #include <QVariantMap>
 #include <QDialog>
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // Include guard.
diff --git a/src/plugins/qbsprojectmanager/defaultpropertyprovider.h b/src/plugins/qbsprojectmanager/defaultpropertyprovider.h
index 08c1e5e020..9e7d36f628 100644
--- a/src/plugins/qbsprojectmanager/defaultpropertyprovider.h
+++ b/src/plugins/qbsprojectmanager/defaultpropertyprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEFAULTPROPERTYPROVIDER_H
-#define DEFAULTPROPERTYPROVIDER_H
+#pragma once
 
 #include "propertyprovider.h"
 
@@ -46,5 +45,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // DEFAULTPROPERTYPROVIDER_H
diff --git a/src/plugins/qbsprojectmanager/propertyprovider.h b/src/plugins/qbsprojectmanager/propertyprovider.h
index 960baf28b4..1d99c1aea5 100644
--- a/src/plugins/qbsprojectmanager/propertyprovider.h
+++ b/src/plugins/qbsprojectmanager/propertyprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYPROVIDER_H
-#define PROPERTYPROVIDER_H
+#pragma once
 
 #include "qbsprojectmanager_global.h"
 
@@ -45,5 +44,3 @@ public:
 };
 
 } // namespace QbsProjectManager
-
-#endif // PROPERTYPROVIDER_H
diff --git a/src/plugins/qbsprojectmanager/qbsbuildconfiguration.h b/src/plugins/qbsprojectmanager/qbsbuildconfiguration.h
index cc367f4239..1dd37792bc 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildconfiguration.h
+++ b/src/plugins/qbsprojectmanager/qbsbuildconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSBUILDCONFIGURATION_H
-#define QBSBUILDCONFIGURATION_H
+#pragma once
 
 #include "qbsprojectmanager_global.h"
 
@@ -135,5 +134,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSBUILDCONFIGURATION_H
diff --git a/src/plugins/qbsprojectmanager/qbsbuildconfigurationwidget.h b/src/plugins/qbsprojectmanager/qbsbuildconfigurationwidget.h
index 04acc4abaa..b8309ede83 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildconfigurationwidget.h
+++ b/src/plugins/qbsprojectmanager/qbsbuildconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSBUILDCONFIGURATIONWIDGET_H
-#define QBSBUILDCONFIGURATIONWIDGET_H
+#pragma once
 
 #include <projectexplorer/namedwidget.h>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSBUILDCONFIGURATIONWIDGET_H
diff --git a/src/plugins/qbsprojectmanager/qbsbuildstep.h b/src/plugins/qbsprojectmanager/qbsbuildstep.h
index 27f7d38b53..af15dd2b4e 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildstep.h
+++ b/src/plugins/qbsprojectmanager/qbsbuildstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSBUILDSTEP_H
-#define QBSBUILDSTEP_H
+#pragma once
 
 #include "qbsbuildconfiguration.h"
 
@@ -184,5 +183,3 @@ public:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSBUILDSTEP_H
diff --git a/src/plugins/qbsprojectmanager/qbscleanstep.h b/src/plugins/qbsprojectmanager/qbscleanstep.h
index 4f454b2e2f..265d538914 100644
--- a/src/plugins/qbsprojectmanager/qbscleanstep.h
+++ b/src/plugins/qbsprojectmanager/qbscleanstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSCLEANSTEP_H
-#define QBSCLEANSTEP_H
+#pragma once
 
 #include "qbsbuildconfiguration.h"
 
@@ -138,5 +137,3 @@ public:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSCLEANSTEP_H
diff --git a/src/plugins/qbsprojectmanager/qbsconstants.h b/src/plugins/qbsprojectmanager/qbsconstants.h
index 66a3a2c21b..61884c7272 100644
--- a/src/plugins/qbsprojectmanager/qbsconstants.h
+++ b/src/plugins/qbsprojectmanager/qbsconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSCONSTANTS_H
-#define QBSCONSTANTS_H
+#pragma once
 
 namespace QbsProjectManager {
 namespace Constants {
@@ -54,5 +53,3 @@ const char QBS_PROPERTIES_KEY_FOR_KITS[] = "QbsProjectManager.qbs-properties";
 
 } // namespace Constants
 } // namespace QbsProjectManager
-
-#endif // QBSCONSTANTS_H
diff --git a/src/plugins/qbsprojectmanager/qbsdeployconfigurationfactory.h b/src/plugins/qbsprojectmanager/qbsdeployconfigurationfactory.h
index 6f7553622b..5f12cc2820 100644
--- a/src/plugins/qbsprojectmanager/qbsdeployconfigurationfactory.h
+++ b/src/plugins/qbsprojectmanager/qbsdeployconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSDEPLOYCONFIGURATIONFACTORY_H
-#define QBSDEPLOYCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/deployconfiguration.h>
 
@@ -71,5 +70,3 @@ public:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSDEPLOYCONFIGURATIONFACTORY_H
diff --git a/src/plugins/qbsprojectmanager/qbsinstallstep.h b/src/plugins/qbsprojectmanager/qbsinstallstep.h
index 6f50e53f7a..95f8434eaf 100644
--- a/src/plugins/qbsprojectmanager/qbsinstallstep.h
+++ b/src/plugins/qbsprojectmanager/qbsinstallstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSINSTALLSTEP_H
-#define QBSINSTALLSTEP_H
+#pragma once
 
 #include "qbsbuildconfiguration.h"
 
@@ -144,5 +143,3 @@ public:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSINSTALLSTEP_H
diff --git a/src/plugins/qbsprojectmanager/qbslogsink.h b/src/plugins/qbsprojectmanager/qbslogsink.h
index bd040a8a6d..f17c4833e1 100644
--- a/src/plugins/qbsprojectmanager/qbslogsink.h
+++ b/src/plugins/qbsprojectmanager/qbslogsink.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSLOGSINK_H
-#define QBSLOGSINK_H
+#pragma once
 
 #include <projectexplorer/task.h>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSLOGSINK_H
diff --git a/src/plugins/qbsprojectmanager/qbsnodes.h b/src/plugins/qbsprojectmanager/qbsnodes.h
index d6b7dfe614..9ada718d8d 100644
--- a/src/plugins/qbsprojectmanager/qbsnodes.h
+++ b/src/plugins/qbsprojectmanager/qbsnodes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSNODES_H
-#define QBSNODES_H
+#pragma once
 
 #include <projectexplorer/projectnodes.h>
 
@@ -199,5 +198,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSNODES_H
diff --git a/src/plugins/qbsprojectmanager/qbsparser.h b/src/plugins/qbsprojectmanager/qbsparser.h
index 7b3aeaff2a..6fa8a86c80 100644
--- a/src/plugins/qbsprojectmanager/qbsparser.h
+++ b/src/plugins/qbsprojectmanager/qbsparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPARSER_H
-#define QBSPARSER_H
+#pragma once
 
 #include "qbsprojectmanager_global.h"
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSPARSER_H
diff --git a/src/plugins/qbsprojectmanager/qbsprofilessettingspage.h b/src/plugins/qbsprojectmanager/qbsprofilessettingspage.h
index c2933ab6c4..9c851daa0d 100644
--- a/src/plugins/qbsprojectmanager/qbsprofilessettingspage.h
+++ b/src/plugins/qbsprojectmanager/qbsprofilessettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROFILESSETTINGSPAGE_H
-#define QBSPROFILESSETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // Include guard.
diff --git a/src/plugins/qbsprojectmanager/qbsproject.h b/src/plugins/qbsprojectmanager/qbsproject.h
index 73b0917eb4..c22a161cd8 100644
--- a/src/plugins/qbsprojectmanager/qbsproject.h
+++ b/src/plugins/qbsprojectmanager/qbsproject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECT_H
-#define QBSPROJECT_H
+#pragma once
 
 #include "qbsprojectmanager.h"
 
@@ -174,5 +173,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSPROJECT_H
diff --git a/src/plugins/qbsprojectmanager/qbsprojectfile.h b/src/plugins/qbsprojectmanager/qbsprojectfile.h
index fae5c1ec31..80cf70113b 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectfile.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTFILE_H
-#define QBSPROJECTFILE_H
+#pragma once
 
 #include <coreplugin/idocument.h>
 
@@ -47,5 +46,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSPROJECTFILE_H
diff --git a/src/plugins/qbsprojectmanager/qbsprojectmanager.h b/src/plugins/qbsprojectmanager/qbsprojectmanager.h
index 99eb2002f4..0d36825072 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectmanager.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTMANAGER_H
-#define QBSPROJECTMANAGER_H
+#pragma once
 
 #include "qbsprojectmanager_global.h"
 
@@ -92,5 +91,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSPROJECTMANAGER_H
diff --git a/src/plugins/qbsprojectmanager/qbsprojectmanager_global.h b/src/plugins/qbsprojectmanager/qbsprojectmanager_global.h
index d9d28454d9..7b53f201e3 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectmanager_global.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectmanager_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTMANAGER_GLOBAL_H
-#define QBSPROJECTMANAGER_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define QBSPROJECTMANAGER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QBSPROJECTMANAGER_GLOBAL_H
diff --git a/src/plugins/qbsprojectmanager/qbsprojectmanagerconstants.h b/src/plugins/qbsprojectmanager/qbsprojectmanagerconstants.h
index e085eb5aa5..ce89cccd11 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectmanagerconstants.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectmanagerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTMANAGERCONSTANTS_H
-#define QBSPROJECTMANAGERCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -67,6 +66,3 @@ static const char QBS_PRODUCT_OVERLAY_ICON[] = ":/qbsprojectmanager/images/produ
 
 } // namespace Constants
 } // namespace QbsProjectManager
-
-#endif // QBSPROJECTMANAGERCONSTANTS_H
-
diff --git a/src/plugins/qbsprojectmanager/qbsprojectmanagerplugin.h b/src/plugins/qbsprojectmanager/qbsprojectmanagerplugin.h
index 7f28b0322d..eb54681c7d 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectmanagerplugin.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectmanagerplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTMANAGERPLUGIN_H
-#define QBSPROJECTMANAGERPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <utils/parameteraction.h>
@@ -109,5 +108,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSPROJECTMANAGERPLUGIN_H
diff --git a/src/plugins/qbsprojectmanager/qbsprojectmanagersettings.h b/src/plugins/qbsprojectmanager/qbsprojectmanagersettings.h
index afc6c2aad4..08eb11cafc 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectmanagersettings.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectmanagersettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTMANAGERSETTINGS_H
-#define QBSPROJECTMANAGERSETTINGS_H
+#pragma once
 
 #include <QObject>
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // Include guard.
diff --git a/src/plugins/qbsprojectmanager/qbsprojectparser.h b/src/plugins/qbsprojectmanager/qbsprojectparser.h
index c00450e574..d354a66079 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectparser.h
+++ b/src/plugins/qbsprojectmanager/qbsprojectparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSPROJECTPARSER_H
-#define QBSPROJECTPARSER_H
+#pragma once
 
 #include <utils/environment.h>
 
@@ -82,5 +81,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSPROJECTPARSER_H
diff --git a/src/plugins/qbsprojectmanager/qbsrunconfiguration.h b/src/plugins/qbsprojectmanager/qbsrunconfiguration.h
index 25d7b33a82..9351d30ac3 100644
--- a/src/plugins/qbsprojectmanager/qbsrunconfiguration.h
+++ b/src/plugins/qbsprojectmanager/qbsrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QBSRUNCONFIGURATION_H
-#define QBSRUNCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/runnables.h>
 
@@ -153,5 +152,3 @@ private:
 
 } // namespace Internal
 } // namespace QbsProjectManager
-
-#endif // QBSRUNCONFIGURATION_H
diff --git a/src/plugins/qmakeandroidsupport/androidextralibrarylistmodel.h b/src/plugins/qmakeandroidsupport/androidextralibrarylistmodel.h
index b4d5dacc5c..f9959d556a 100644
--- a/src/plugins/qmakeandroidsupport/androidextralibrarylistmodel.h
+++ b/src/plugins/qmakeandroidsupport/androidextralibrarylistmodel.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDEXTRALIBRARYLISTMODEL_H
-#define ANDROIDEXTRALIBRARYLISTMODEL_H
+#pragma once
 
 #include <QAbstractItemModel>
 #include <QStringList>
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // ANDROIDEXTRALIBRARYLISTMODEL_H
diff --git a/src/plugins/qmakeandroidsupport/androidpackageinstallationfactory.h b/src/plugins/qmakeandroidsupport/androidpackageinstallationfactory.h
index 9bb3ce1fe7..f870689439 100644
--- a/src/plugins/qmakeandroidsupport/androidpackageinstallationfactory.h
+++ b/src/plugins/qmakeandroidsupport/androidpackageinstallationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDPACKAGEINSTALLATIONFACTORY_H
-#define ANDROIDPACKAGEINSTALLATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -55,5 +54,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // ANDROIDPACKAGEINSTALLATIONFACTORY_H
diff --git a/src/plugins/qmakeandroidsupport/androidpackageinstallationstep.h b/src/plugins/qmakeandroidsupport/androidpackageinstallationstep.h
index ca1cfbb44f..c27d43aa4f 100644
--- a/src/plugins/qmakeandroidsupport/androidpackageinstallationstep.h
+++ b/src/plugins/qmakeandroidsupport/androidpackageinstallationstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDPACKAGEINSTALLATIONSTEP_H
-#define ANDROIDPACKAGEINSTALLATIONSTEP_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 #include <projectexplorer/abstractprocessstep.h>
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // ANDROIDPACKAGEINSTALLATIONSTEP_H
diff --git a/src/plugins/qmakeandroidsupport/androidqmakebuildconfigurationfactory.h b/src/plugins/qmakeandroidsupport/androidqmakebuildconfigurationfactory.h
index c2044cc1ad..25783a05cb 100644
--- a/src/plugins/qmakeandroidsupport/androidqmakebuildconfigurationfactory.h
+++ b/src/plugins/qmakeandroidsupport/androidqmakebuildconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANDROIDQMAKEBUILDCONFIGURATIONFACTORY_H
-#define ANDROIDQMAKEBUILDCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <qmakeprojectmanager/qmakebuildconfiguration.h>
 
@@ -65,6 +64,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-
-#endif // ANDROIDQMAKEBUILDCONFIGURATIONFACTORY_H
diff --git a/src/plugins/qmakeandroidsupport/createandroidmanifestwizard.h b/src/plugins/qmakeandroidsupport/createandroidmanifestwizard.h
index eb6cd5bc41..feba63241f 100644
--- a/src/plugins/qmakeandroidsupport/createandroidmanifestwizard.h
+++ b/src/plugins/qmakeandroidsupport/createandroidmanifestwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CREATEANDROIDMANIFESTWIZARD_H
-#define CREATEANDROIDMANIFESTWIZARD_H
+#pragma once
 
 #include <utils/fileutils.h>
 #include <utils/pathchooser.h>
@@ -120,5 +119,3 @@ private:
 
 } //namespace QmakeAndroidSupport
 } //namespace Internal
-
-#endif // CREATEANDROIDMANIFESTWIZARD_H
diff --git a/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkstep.h b/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkstep.h
index a3b56871c5..8367236ca0 100644
--- a/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkstep.h
+++ b/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkstep.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEANDROIDBUILDAPKSTEP_H
-#define QMAKEANDROIDBUILDAPKSTEP_H
+#pragma once
 
 #include <android/androidbuildapkstep.h>
 
@@ -90,5 +89,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // QMAKEANDROIDBUILDAPKSTEP_H
diff --git a/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkwidget.h b/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkwidget.h
index b7c435c255..d7adbb111b 100644
--- a/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkwidget.h
+++ b/src/plugins/qmakeandroidsupport/qmakeandroidbuildapkwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEANDROIDBUILDAPKWIDGET_H
-#define QMAKEANDROIDBUILDAPKWIDGET_H
+#pragma once
 
 #include "androidextralibrarylistmodel.h"
 
@@ -75,5 +74,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // QMAKEANDROIDBUILDAPKWIDGET_H
diff --git a/src/plugins/qmakeandroidsupport/qmakeandroidrunconfiguration.h b/src/plugins/qmakeandroidsupport/qmakeandroidrunconfiguration.h
index 95d06021ef..fcdd1270a2 100644
--- a/src/plugins/qmakeandroidsupport/qmakeandroidrunconfiguration.h
+++ b/src/plugins/qmakeandroidsupport/qmakeandroidrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKE_ANDROIDRUNCONFIGURATION_H
-#define QMAKE_ANDROIDRUNCONFIGURATION_H
+#pragma once
 
 #include <android/androidrunconfiguration.h>
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // QMAKE_ANDROIDRUNCONFIGURATION_H
diff --git a/src/plugins/qmakeandroidsupport/qmakeandroidrunfactories.h b/src/plugins/qmakeandroidsupport/qmakeandroidrunfactories.h
index e11c6d4ea1..03c6702631 100644
--- a/src/plugins/qmakeandroidsupport/qmakeandroidrunfactories.h
+++ b/src/plugins/qmakeandroidsupport/qmakeandroidrunfactories.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKE_ANDROIDRUNFACTORIES_H
-#define QMAKE_ANDROIDRUNFACTORIES_H
+#pragma once
 
 #include <android/androidrunfactories.h>
 #include <projectexplorer/runconfiguration.h>
@@ -70,5 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif  // ANDROIDRUNFACTORIES_H
diff --git a/src/plugins/qmakeandroidsupport/qmakeandroidsupport.h b/src/plugins/qmakeandroidsupport/qmakeandroidsupport.h
index 1a9e4f69c3..52557f1881 100644
--- a/src/plugins/qmakeandroidsupport/qmakeandroidsupport.h
+++ b/src/plugins/qmakeandroidsupport/qmakeandroidsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEANDROIDSUPPORT_H
-#define QMAKEANDROIDSUPPORT_H
+#pragma once
 
 #include <android/androidqtsupport.h>
 
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // QMAKEANDROIDSUPPORT_H
diff --git a/src/plugins/qmakeandroidsupport/qmakeandroidsupportplugin.h b/src/plugins/qmakeandroidsupport/qmakeandroidsupportplugin.h
index ba5fa5e98f..e2f8be83b2 100644
--- a/src/plugins/qmakeandroidsupport/qmakeandroidsupportplugin.h
+++ b/src/plugins/qmakeandroidsupport/qmakeandroidsupportplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEANDROIDSUPPORTPLUGIN_H
-#define QMAKEANDROIDSUPPORTPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -45,5 +44,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeAndroidSupport
-
-#endif // QMAKEANDROIDSUPPORTPLUGIN_H
diff --git a/src/plugins/qmakeprojectmanager/addlibrarywizard.h b/src/plugins/qmakeprojectmanager/addlibrarywizard.h
index 7aa90141a1..6a0201c398 100644
--- a/src/plugins/qmakeprojectmanager/addlibrarywizard.h
+++ b/src/plugins/qmakeprojectmanager/addlibrarywizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDLIBRARYWIZARD_H
-#define ADDLIBRARYWIZARD_H
+#pragma once
 
 #include <utils/wizard.h>
 #include <utils/pathchooser.h>
@@ -141,5 +140,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // ADDLIBRARYWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/applicationlauncher.h b/src/plugins/qmakeprojectmanager/applicationlauncher.h
index 4732497f92..4889a5bc57 100644
--- a/src/plugins/qmakeprojectmanager/applicationlauncher.h
+++ b/src/plugins/qmakeprojectmanager/applicationlauncher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef APPLICATIONLAUNCHER_H
-#define APPLICATIONLAUNCHER_H
+#pragma once
 
 #include <QObject>
 #include <QStringList>
@@ -77,5 +76,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // APPLICATIONLAUNCHER_H
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/classdefinition.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/classdefinition.h
index 8142ec82c6..ab6280659b 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/classdefinition.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/classdefinition.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSDEFINITION_H
-#define CLASSDEFINITION_H
+#pragma once
 
 #include "ui_classdefinition.h"
 #include "filenamingparameters.h"
@@ -67,5 +66,3 @@ private:
 
 }
 }
-
-#endif
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/classlist.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/classlist.h
index baacbaf657..39c04deafe 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/classlist.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/classlist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLASSLIST_H
-#define CLASSLIST_H
+#pragma once
 
 #include <QListView>
 
@@ -68,4 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-#endif
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetpluginwizardpage.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetpluginwizardpage.h
index dece6b2d8b..38b8c9c727 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetpluginwizardpage.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetpluginwizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIDGETPLUGINWIZARDPAGE_H
-#define CUSTOMWIDGETPLUGINWIZARDPAGE_H
+#pragma once
 
 #include "filenamingparameters.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // CUSTOMWIDGETPLUGINWIZARDPAGE_H
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwidgetswizardpage.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwidgetswizardpage.h
index d01f053073..6d9ed8d1ad 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwidgetswizardpage.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwidgetswizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIDGETWIDGETSWIZARDPAGE_H
-#define CUSTOMWIDGETWIDGETSWIZARDPAGE_H
+#pragma once
 
 #include "pluginoptions.h"
 #include "filenamingparameters.h"
@@ -83,5 +82,3 @@ private:
 
 }
 }
-
-#endif // CUSTOMWIDGETWIDGETSWIZARDPAGE_H
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizard.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizard.h
index 4618d5a3e0..029c81fea2 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizard.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIDGETWIZARD_H
-#define CUSTOMWIDGETWIZARD_H
+#pragma once
 
 #include "../wizards/qtwizard.h"
 
@@ -46,5 +45,3 @@ protected:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // CUSTOMWIDGETWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizarddialog.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizarddialog.h
index 5e72537aea..feeddb5c0b 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizarddialog.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/customwidgetwizarddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIDGETWIZARDDIALOG_H
-#define CUSTOMWIDGETWIZARDDIALOG_H
+#pragma once
 
 #include "../wizards/qtwizard.h"
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // CUSTOMWIDGETWIZARDDIALOG_H
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/filenamingparameters.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/filenamingparameters.h
index bc6a1eee88..7f130f3339 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/filenamingparameters.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/filenamingparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILENAMINGPARAMETERS_H
-#define FILENAMINGPARAMETERS_H
+#pragma once
 
 #include <QString>
 #include <QFileInfo>
@@ -79,4 +78,3 @@ struct FileNamingParameters
 
 }
 }
-#endif // FILENAMINGPARAMETERS_H
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.h
index c9c2e4afa7..2307a4ba77 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/plugingenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINGENERATOR_H
-#define PLUGINGENERATOR_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -65,5 +64,3 @@ private:
 
 }
 }
-
-#endif
diff --git a/src/plugins/qmakeprojectmanager/customwidgetwizard/pluginoptions.h b/src/plugins/qmakeprojectmanager/customwidgetwizard/pluginoptions.h
index 8e040c7242..6ff77c8426 100644
--- a/src/plugins/qmakeprojectmanager/customwidgetwizard/pluginoptions.h
+++ b/src/plugins/qmakeprojectmanager/customwidgetwizard/pluginoptions.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINOPTIONS_H
-#define PLUGINOPTIONS_H
+#pragma once
 
 #include <QString>
 #include <QList>
@@ -66,5 +65,3 @@ struct PluginOptions {
 
 }
 }
-
-#endif
diff --git a/src/plugins/qmakeprojectmanager/desktopqmakerunconfiguration.h b/src/plugins/qmakeprojectmanager/desktopqmakerunconfiguration.h
index 5e5d427e73..0eba545650 100644
--- a/src/plugins/qmakeprojectmanager/desktopqmakerunconfiguration.h
+++ b/src/plugins/qmakeprojectmanager/desktopqmakerunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESKTOPQMAKERUNCONFIGURATION_H
-#define DESKTOPQMAKERUNCONFIGURATION_H
+#pragma once
 
 #include <qmakeprojectmanager/qmakerunconfigurationfactory.h>
 
@@ -171,5 +170,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // DESKTOPQMAKERUNCONFIGURATION_H
diff --git a/src/plugins/qmakeprojectmanager/externaleditors.h b/src/plugins/qmakeprojectmanager/externaleditors.h
index 767f1f40e3..f60e355b64 100644
--- a/src/plugins/qmakeprojectmanager/externaleditors.h
+++ b/src/plugins/qmakeprojectmanager/externaleditors.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXTERNALEDITORS_H
-#define EXTERNALEDITORS_H
+#pragma once
 
 #include <coreplugin/editormanager/iexternaleditor.h>
 #include <coreplugin/id.h>
@@ -139,5 +138,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // EXTERNALEDITORS_H
diff --git a/src/plugins/qmakeprojectmanager/findqmakeprofiles.h b/src/plugins/qmakeprojectmanager/findqmakeprofiles.h
index 17ab34626d..ba1772c78c 100644
--- a/src/plugins/qmakeprojectmanager/findqmakeprofiles.h
+++ b/src/plugins/qmakeprojectmanager/findqmakeprofiles.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDQMAKEPROFILES_H
-#define FINDQMAKEPROFILES_H
+#pragma once
 
 #include <projectexplorer/nodesvisitor.h>
 
@@ -44,6 +43,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // FINDQMAKEPROFILES_H
-
diff --git a/src/plugins/qmakeprojectmanager/librarydetailscontroller.h b/src/plugins/qmakeprojectmanager/librarydetailscontroller.h
index 2557fa619d..b6388c75d1 100644
--- a/src/plugins/qmakeprojectmanager/librarydetailscontroller.h
+++ b/src/plugins/qmakeprojectmanager/librarydetailscontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBRARYDETAILSCONTROLLER_H
-#define LIBRARYDETAILSCONTROLLER_H
+#pragma once
 
 #include "addlibrarywizard.h"
 
@@ -198,5 +197,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // LIBRARYDETAILSCONTROLLER_H
diff --git a/src/plugins/qmakeprojectmanager/makefileparse.h b/src/plugins/qmakeprojectmanager/makefileparse.h
index 33e9d7afcb..9a8783d247 100644
--- a/src/plugins/qmakeprojectmanager/makefileparse.h
+++ b/src/plugins/qmakeprojectmanager/makefileparse.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MAKEFILEPARSE_H
-#define MAKEFILEPARSE_H
+#pragma once
 
 #include <utils/fileutils.h>
 #include <qtsupport/baseqtversion.h>
@@ -87,6 +86,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-
-#endif // MAKEFILEPARSE_H
diff --git a/src/plugins/qmakeprojectmanager/makestep.h b/src/plugins/qmakeprojectmanager/makestep.h
index 2d49ba5fb6..e3618f4f9c 100644
--- a/src/plugins/qmakeprojectmanager/makestep.h
+++ b/src/plugins/qmakeprojectmanager/makestep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MAKESTEP_H
-#define MAKESTEP_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 
@@ -137,5 +136,3 @@ private:
 };
 
 } // QmakeProjectManager
-
-#endif // MAKESTEP_H
diff --git a/src/plugins/qmakeprojectmanager/profilecompletionassist.h b/src/plugins/qmakeprojectmanager/profilecompletionassist.h
index 1104d9548a..a63f3e7a8d 100644
--- a/src/plugins/qmakeprojectmanager/profilecompletionassist.h
+++ b/src/plugins/qmakeprojectmanager/profilecompletionassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROFILECOMPLETIONASSIST_H
-#define PROFILECOMPLETIONASSIST_H
+#pragma once
 
 #include <texteditor/codeassist/completionassistprovider.h>
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // PROFILECOMPLETIONASSIST_H
diff --git a/src/plugins/qmakeprojectmanager/profileeditor.h b/src/plugins/qmakeprojectmanager/profileeditor.h
index 6f1fb49107..048a0f0b13 100644
--- a/src/plugins/qmakeprojectmanager/profileeditor.h
+++ b/src/plugins/qmakeprojectmanager/profileeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROFILEEDITOR_H
-#define PROFILEEDITOR_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // PROFILEEDITOR_H
diff --git a/src/plugins/qmakeprojectmanager/profilehighlighter.h b/src/plugins/qmakeprojectmanager/profilehighlighter.h
index 417cb49a1f..98de83c9c2 100644
--- a/src/plugins/qmakeprojectmanager/profilehighlighter.h
+++ b/src/plugins/qmakeprojectmanager/profilehighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROFILEHIGHLIGHTER_H
-#define PROFILEHIGHLIGHTER_H
+#pragma once
 
 #include <texteditor/syntaxhighlighter.h>
 #include <texteditor/codeassist/keywordscompletionassist.h>
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // PROFILEHIGHLIGHTER_H
diff --git a/src/plugins/qmakeprojectmanager/profilehoverhandler.h b/src/plugins/qmakeprojectmanager/profilehoverhandler.h
index 890701c7ad..407c1f4d28 100644
--- a/src/plugins/qmakeprojectmanager/profilehoverhandler.h
+++ b/src/plugins/qmakeprojectmanager/profilehoverhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROFILEHOVERHANDLER_H
-#define PROFILEHOVERHANDLER_H
+#pragma once
 
 #include <texteditor/basehoverhandler.h>
 #include <texteditor/codeassist/keywordscompletionassist.h>
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // PROFILEHOVERHANDLER_H
diff --git a/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.h b/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.h
index ffb3775f00..a8793b408c 100644
--- a/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.h
+++ b/src/plugins/qmakeprojectmanager/qmakebuildconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEBUILDCONFIGURATION_H
-#define QMAKEBUILDCONFIGURATION_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 
@@ -180,5 +179,3 @@ private:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKEBUILDCONFIGURATION_H
diff --git a/src/plugins/qmakeprojectmanager/qmakebuildinfo.h b/src/plugins/qmakeprojectmanager/qmakebuildinfo.h
index 9d8c0f49e0..41e3eeb507 100644
--- a/src/plugins/qmakeprojectmanager/qmakebuildinfo.h
+++ b/src/plugins/qmakeprojectmanager/qmakebuildinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEBUILDINFO_H
-#define QMAKEBUILDINFO_H
+#pragma once
 
 #include "qmakebuildconfiguration.h"
 #include "qmakestep.h"
@@ -63,5 +62,3 @@ public:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKEBUILDINFO_H
diff --git a/src/plugins/qmakeprojectmanager/qmakekitconfigwidget.h b/src/plugins/qmakeprojectmanager/qmakekitconfigwidget.h
index 234d7221c4..43bd4e8ac7 100644
--- a/src/plugins/qmakeprojectmanager/qmakekitconfigwidget.h
+++ b/src/plugins/qmakeprojectmanager/qmakekitconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEKITCONFIGWIDGET_H
-#define QMAKEKITCONFIGWIDGET_H
+#pragma once
 
 #include <projectexplorer/kitconfigwidget.h>
 
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QMAKEKITCONFIGWIDGET_H
diff --git a/src/plugins/qmakeprojectmanager/qmakekitinformation.h b/src/plugins/qmakeprojectmanager/qmakekitinformation.h
index 79e73a5f3b..0e77153d55 100644
--- a/src/plugins/qmakeprojectmanager/qmakekitinformation.h
+++ b/src/plugins/qmakeprojectmanager/qmakekitinformation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEKITINFORMATION_H
-#define QMAKEKITINFORMATION_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 
@@ -56,5 +55,3 @@ public:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKEKITINFORMATION_H
diff --git a/src/plugins/qmakeprojectmanager/qmakenodes.h b/src/plugins/qmakeprojectmanager/qmakenodes.h
index 5df6442346..5e70c708a8 100644
--- a/src/plugins/qmakeprojectmanager/qmakenodes.h
+++ b/src/plugins/qmakeprojectmanager/qmakenodes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKENODES_H
-#define QMAKENODES_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 #include "proparser/prowriter.h"
@@ -419,5 +418,3 @@ private:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKENODES_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeparser.h b/src/plugins/qmakeprojectmanager/qmakeparser.h
index 98432573fd..c5dbb91a5c 100644
--- a/src/plugins/qmakeprojectmanager/qmakeparser.h
+++ b/src/plugins/qmakeprojectmanager/qmakeparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPARSER_H
-#define QMAKEPARSER_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 
@@ -47,5 +46,3 @@ private:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKEPARSER_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.h b/src/plugins/qmakeprojectmanager/qmakeproject.h
index c338a81312..77f6c7e756 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.h
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPROJECT_H
-#define QMAKEPROJECT_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 #include "qmakeprojectmanager.h"
@@ -206,6 +205,3 @@ private:
 };
 
 } // namespace QmakeProjectManager
-
-
-#endif // QMAKEPROJECT_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.h b/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.h
index 8e84e61a2b..2d775fcd80 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPROJECTCONFIGWIDGET_H
-#define QMAKEPROJECTCONFIGWIDGET_H
+#pragma once
 
 #include <projectexplorer/namedwidget.h>
 
@@ -73,5 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QMAKEPROJECTCONFIGWIDGET_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
index 725186a1d5..a6e8dce3c7 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPROJECTIMPORTER_H
-#define QMAKEPROJECTIMPORTER_H
+#pragma once
 
 #include "qmakestep.h"
 
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QMAKEPROJECTIMPORTER_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectmanager_global.h b/src/plugins/qmakeprojectmanager/qmakeprojectmanager_global.h
index 46c3e2501c..7dee97cb25 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectmanager_global.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectmanager_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPROJECTMANAGER_GLOBAL_H
-#define QMAKEPROJECTMANAGER_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define QMAKEPROJECTMANAGER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMAKEPROJECTMANAGER_GLOBAL_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h b/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h
index 649c61bbc6..fcb102589b 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectmanagerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPROJECTMANAGERCONSTANTS_H
-#define QMAKEPROJECTMANAGERCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -69,5 +68,3 @@ const char ICON_QTQUICK_APP[] = ":/wizards/images/qtquickapp.png";
 
 } // namespace Constants
 } // namespace QmakeProjectManager
-
-#endif // QMAKEPROJECTMANAGERCONSTANTS_H
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectmanagerplugin.h b/src/plugins/qmakeprojectmanager/qmakeprojectmanagerplugin.h
index 2029fe2b9e..473065f5f1 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectmanagerplugin.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectmanagerplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPROJECTMANAGERPLUGIN_H
-#define QMAKEPROJECTMANAGERPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <coreplugin/icontext.h>
@@ -94,5 +93,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QMAKEPROJECTMANAGERPLUGIN_H
diff --git a/src/plugins/qmakeprojectmanager/qmakerunconfigurationfactory.h b/src/plugins/qmakeprojectmanager/qmakerunconfigurationfactory.h
index a40978453d..3f0bfc419c 100644
--- a/src/plugins/qmakeprojectmanager/qmakerunconfigurationfactory.h
+++ b/src/plugins/qmakeprojectmanager/qmakerunconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKERUNCONFIGURATIONFACTORY_H
-#define QMAKERUNCONFIGURATIONFACTORY_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 
@@ -49,5 +48,3 @@ public:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKERUNCONFIGURATIONFACTORY_H
diff --git a/src/plugins/qmakeprojectmanager/qmakestep.h b/src/plugins/qmakeprojectmanager/qmakestep.h
index 3509e85981..5d80671d07 100644
--- a/src/plugins/qmakeprojectmanager/qmakestep.h
+++ b/src/plugins/qmakeprojectmanager/qmakestep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKESTEP_H
-#define QMAKESTEP_H
+#pragma once
 
 #include "qmakeprojectmanager_global.h"
 #include <projectexplorer/abstractprocessstep.h>
@@ -224,5 +223,3 @@ private:
 };
 
 } // namespace QmakeProjectManager
-
-#endif // QMAKESTEP_H
diff --git a/src/plugins/qmakeprojectmanager/qtmodulesinfo.h b/src/plugins/qmakeprojectmanager/qtmodulesinfo.h
index b3541c3088..5f3e793d3c 100644
--- a/src/plugins/qmakeprojectmanager/qtmodulesinfo.h
+++ b/src/plugins/qmakeprojectmanager/qtmodulesinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTMODULESINFO_H
-#define QTMODULESINFO_H
+#pragma once
 
 #include <QStringList>
 
@@ -42,5 +41,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QTMODULESINFO_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/filespage.h b/src/plugins/qmakeprojectmanager/wizards/filespage.h
index 0160d9830a..135eb3d146 100644
--- a/src/plugins/qmakeprojectmanager/wizards/filespage.h
+++ b/src/plugins/qmakeprojectmanager/wizards/filespage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILESPAGE_H
-#define FILESPAGE_H
+#pragma once
 
 #include <QWizard>
 
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // FILESPAGE_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/guiappwizard.h b/src/plugins/qmakeprojectmanager/wizards/guiappwizard.h
index 44286b26a9..82369889e9 100644
--- a/src/plugins/qmakeprojectmanager/wizards/guiappwizard.h
+++ b/src/plugins/qmakeprojectmanager/wizards/guiappwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GUIAPPWIZARD_H
-#define GUIAPPWIZARD_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // GUIAPPWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/guiappwizarddialog.h b/src/plugins/qmakeprojectmanager/wizards/guiappwizarddialog.h
index e688b01042..ab28479700 100644
--- a/src/plugins/qmakeprojectmanager/wizards/guiappwizarddialog.h
+++ b/src/plugins/qmakeprojectmanager/wizards/guiappwizarddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GUIAPPWIZARDDIALOG_H
-#define GUIAPPWIZARDDIALOG_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // GUIAPPWIZARDDIALOG_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/libraryparameters.h b/src/plugins/qmakeprojectmanager/wizards/libraryparameters.h
index 8c9790de89..760bb03365 100644
--- a/src/plugins/qmakeprojectmanager/wizards/libraryparameters.h
+++ b/src/plugins/qmakeprojectmanager/wizards/libraryparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBRARYPARAMETERS_H
-#define LIBRARYPARAMETERS_H
+#pragma once
 
 #include "qtprojectparameters.h"
 
@@ -61,5 +60,3 @@ struct LibraryParameters {
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // LIBRARYPARAMETERS_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/librarywizard.h b/src/plugins/qmakeprojectmanager/wizards/librarywizard.h
index c327d6d2dc..d96df97df6 100644
--- a/src/plugins/qmakeprojectmanager/wizards/librarywizard.h
+++ b/src/plugins/qmakeprojectmanager/wizards/librarywizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBRARYWIZARD_H
-#define LIBRARYWIZARD_H
+#pragma once
 
 #include "qtwizard.h"
 #include "libraryparameters.h"
@@ -47,5 +46,3 @@ protected:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // LIBRARYWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/librarywizarddialog.h b/src/plugins/qmakeprojectmanager/wizards/librarywizarddialog.h
index 28ba6952f6..620ffe7cca 100644
--- a/src/plugins/qmakeprojectmanager/wizards/librarywizarddialog.h
+++ b/src/plugins/qmakeprojectmanager/wizards/librarywizarddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBRARYWIZARDDIALOG_H
-#define LIBRARYWIZARDDIALOG_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -77,5 +76,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // LIBRARYWIZARDDIALOG_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/modulespage.h b/src/plugins/qmakeprojectmanager/wizards/modulespage.h
index 7fb8aa9496..394326d1df 100644
--- a/src/plugins/qmakeprojectmanager/wizards/modulespage.h
+++ b/src/plugins/qmakeprojectmanager/wizards/modulespage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODULESPAGE_H
-#define MODULESPAGE_H
+#pragma once
 
 #include <QMap>
 #include <QStringList>
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // MODULESPAGE_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/qtprojectparameters.h b/src/plugins/qmakeprojectmanager/wizards/qtprojectparameters.h
index f973d98604..e82e2fb3ed 100644
--- a/src/plugins/qmakeprojectmanager/wizards/qtprojectparameters.h
+++ b/src/plugins/qmakeprojectmanager/wizards/qtprojectparameters.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTPROJECTPARAMETERS_H
-#define QTPROJECTPARAMETERS_H
+#pragma once
 
 #include <QStringList>
 
@@ -71,5 +70,3 @@ struct QtProjectParameters {
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QTPROJECTPARAMETERS_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/qtwizard.h b/src/plugins/qmakeprojectmanager/wizards/qtwizard.h
index d14dfe9ce3..813ca9555f 100644
--- a/src/plugins/qmakeprojectmanager/wizards/qtwizard.h
+++ b/src/plugins/qmakeprojectmanager/wizards/qtwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTWIZARD_H
-#define QTWIZARD_H
+#pragma once
 
 #include "qtprojectparameters.h"
 #include <projectexplorer/baseprojectwizarddialog.h>
@@ -146,5 +145,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // QTWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizard.h b/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizard.h
index dbdd54f2f0..8f6cb99b78 100644
--- a/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizard.h
+++ b/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBDIRSPROJECTWIZARD_H
-#define SUBDIRSPROJECTWIZARD_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -49,5 +48,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // SUBDIRSPROJECTWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizarddialog.h b/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizarddialog.h
index 9b7160b6e6..7dab8c7273 100644
--- a/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizarddialog.h
+++ b/src/plugins/qmakeprojectmanager/wizards/subdirsprojectwizarddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBDIRSPROJECTWIZARDDIALOG_H
-#define SUBDIRSPROJECTWIZARDDIALOG_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // SUBDIRSPROJECTWIZARDDIALOG_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/testwizard.h b/src/plugins/qmakeprojectmanager/wizards/testwizard.h
index 9f027b9426..421cf95743 100644
--- a/src/plugins/qmakeprojectmanager/wizards/testwizard.h
+++ b/src/plugins/qmakeprojectmanager/wizards/testwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTWIZARD_H
-#define TESTWIZARD_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -46,5 +45,3 @@ protected:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // TESTWIZARD_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/testwizarddialog.h b/src/plugins/qmakeprojectmanager/wizards/testwizarddialog.h
index b92d316867..8efcf0bb47 100644
--- a/src/plugins/qmakeprojectmanager/wizards/testwizarddialog.h
+++ b/src/plugins/qmakeprojectmanager/wizards/testwizarddialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTWIZARDDIALOG_H
-#define TESTWIZARDDIALOG_H
+#pragma once
 
 #include "qtwizard.h"
 
@@ -74,5 +73,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // TESTWIZARDDIALOG_H
diff --git a/src/plugins/qmakeprojectmanager/wizards/testwizardpage.h b/src/plugins/qmakeprojectmanager/wizards/testwizardpage.h
index 7857a598a3..e9076af5bf 100644
--- a/src/plugins/qmakeprojectmanager/wizards/testwizardpage.h
+++ b/src/plugins/qmakeprojectmanager/wizards/testwizardpage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TESTWIZARDPAGE_H
-#define TESTWIZARDPAGE_H
+#pragma once
 
 #include <QWizardPage>
 
@@ -68,5 +67,3 @@ private:
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // TESTWIZARDPAGE_H
diff --git a/src/plugins/qmldesigner/components/componentcore/abstractaction.h b/src/plugins/qmldesigner/components/componentcore/abstractaction.h
index f6b43e67d1..0c347b5d23 100644
--- a/src/plugins/qmldesigner/components/componentcore/abstractaction.h
+++ b/src/plugins/qmldesigner/components/componentcore/abstractaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_DEFAULTDESIGNERACTION_H
-#define QMLDESIGNER_DEFAULTDESIGNERACTION_H
+#pragma once
 
 #include "actioninterface.h"
 
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_DEFAULTDESIGNERACTION_H
diff --git a/src/plugins/qmldesigner/components/componentcore/abstractactiongroup.h b/src/plugins/qmldesigner/components/componentcore/abstractactiongroup.h
index f6997ab4c9..d13b7782cc 100644
--- a/src/plugins/qmldesigner/components/componentcore/abstractactiongroup.h
+++ b/src/plugins/qmldesigner/components/componentcore/abstractactiongroup.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MENUDESIGNERACTION_H
-#define MENUDESIGNERACTION_H
+#pragma once
 
 #include "actioninterface.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // MENUDESIGNERACTION_H
diff --git a/src/plugins/qmldesigner/components/componentcore/actioninterface.h b/src/plugins/qmldesigner/components/componentcore/actioninterface.h
index 9b6afc4edc..d3d23ca43a 100644
--- a/src/plugins/qmldesigner/components/componentcore/actioninterface.h
+++ b/src/plugins/qmldesigner/components/componentcore/actioninterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTDESIGNERACTION_H
-#define ABSTRACTDESIGNERACTION_H
+#pragma once
 
 #include "componentcore_constants.h"
 #include "selectioncontext.h"
@@ -62,5 +61,3 @@ public:
 };
 
 } //QmlDesigner
-
-#endif //ABSTRACTDESIGNERACTION_H
diff --git a/src/plugins/qmldesigner/components/componentcore/componentcore_constants.h b/src/plugins/qmldesigner/components/componentcore/componentcore_constants.h
index 86f1ccf6de..9da0027c0c 100644
--- a/src/plugins/qmldesigner/components/componentcore/componentcore_constants.h
+++ b/src/plugins/qmldesigner/components/componentcore/componentcore_constants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTCORE_CONSTANTS_H
-#define COMPONENTCORE_CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -112,5 +111,3 @@ const int priorityLast = 60;
 } //ComponentCoreConstants
 
 } //QmlDesigner
-
-#endif //COMPONENTCORE_CONSTANTS_H
diff --git a/src/plugins/qmldesigner/components/componentcore/crumblebar.h b/src/plugins/qmldesigner/components/componentcore/crumblebar.h
index cb19c6ce0f..a09f2e3b4f 100644
--- a/src/plugins/qmldesigner/components/componentcore/crumblebar.h
+++ b/src/plugins/qmldesigner/components/componentcore/crumblebar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_FORMEDITORCRUMBLEBAR_H
-#define QMLDESIGNER_FORMEDITORCRUMBLEBAR_H
+#pragma once
 
 #include <QObject>
 #include <utils/crumblepath.h>
@@ -70,5 +69,3 @@ bool operator !=(const CrumbleBarInfo &first, const CrumbleBarInfo &second);
 } // namespace QmlDesigner
 
 Q_DECLARE_METATYPE(QmlDesigner::CrumbleBarInfo)
-
-#endif // QMLDESIGNER_FORMEDITORCRUMBLEBAR_H
diff --git a/src/plugins/qmldesigner/components/componentcore/designeractionmanager.h b/src/plugins/qmldesigner/components/componentcore/designeractionmanager.h
index f0ed41cba1..fca668b679 100644
--- a/src/plugins/qmldesigner/components/componentcore/designeractionmanager.h
+++ b/src/plugins/qmldesigner/components/componentcore/designeractionmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNERACTIONMANAGER_H
-#define DESIGNERACTIONMANAGER_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include "actioninterface.h"
@@ -51,5 +50,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif //DESIGNERACTIONMANAGER_H
diff --git a/src/plugins/qmldesigner/components/componentcore/designeractionmanagerview.h b/src/plugins/qmldesigner/components/componentcore/designeractionmanagerview.h
index 4613cb0332..b33d65f41b 100644
--- a/src/plugins/qmldesigner/components/componentcore/designeractionmanagerview.h
+++ b/src/plugins/qmldesigner/components/componentcore/designeractionmanagerview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_DESIGNERACTIONMANAGERVIEW_H
-#define QMLDESIGNER_DESIGNERACTIONMANAGERVIEW_H
+#pragma once
 
 #include <abstractview.h>
 
@@ -78,5 +77,3 @@ private:
 
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_DESIGNERACTIONMANAGERVIEW_H
diff --git a/src/plugins/qmldesigner/components/componentcore/findimplementation.h b/src/plugins/qmldesigner/components/componentcore/findimplementation.h
index d6f53e1b35..931e0aea94 100644
--- a/src/plugins/qmldesigner/components/componentcore/findimplementation.h
+++ b/src/plugins/qmldesigner/components/componentcore/findimplementation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDIMPLEMENTATION_H
-#define FINDIMPLEMENTATION_H
+#pragma once
 
 #include <QList>
 
@@ -36,5 +35,3 @@ public:
     FindImplementation();
     static QList<QmlJSEditor::FindReferences::Usage> run(const QString &fileName, const QString &typeName, const QString &itemName);
 };
-
-#endif // FINDIMPLEMENTATION_H
diff --git a/src/plugins/qmldesigner/components/componentcore/layoutingridlayout.h b/src/plugins/qmldesigner/components/componentcore/layoutingridlayout.h
index ed7b8eece6..4acc4291a6 100644
--- a/src/plugins/qmldesigner/components/componentcore/layoutingridlayout.h
+++ b/src/plugins/qmldesigner/components/componentcore/layoutingridlayout.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LAYOUTINGRIDLAYOUT_H
-#define LAYOUTINGRIDLAYOUT_H
+#pragma once
 
 #include "selectioncontext.h"
 
@@ -82,5 +81,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // LAYOUTINGRIDLAYOUT_H
diff --git a/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu.h b/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu.h
index 615ac45128..58a1d1f9cf 100644
--- a/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu.h
+++ b/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELNODECONTEXTMENU_H
-#define MODELNODECONTEXTMENU_H
+#pragma once
 
 #include <QPoint>
 #include <QCoreApplication>
@@ -50,5 +49,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // MODELNODECONTEXTMENU_H
diff --git a/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu_helper.h b/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu_helper.h
index 11fd6e2dea..233e5c5649 100644
--- a/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu_helper.h
+++ b/src/plugins/qmldesigner/components/componentcore/modelnodecontextmenu_helper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELNODECONTEXTMENU_HELPER_H
-#define MODELNODECONTEXTMENU_HELPER_H
+#pragma once
 
 #include "modelnodeoperations.h"
 #include "abstractaction.h"
@@ -191,5 +190,3 @@ private:
 
 
 } //QmlDesigner
-
-#endif // MODELNODECONTEXTMENU_HELPER_H
diff --git a/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.h b/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.h
index 74682d7d03..bdc43684ce 100644
--- a/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.h
+++ b/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELNODEOPERATIONS_H
-#define MODELNODEOPERATIONS_H
+#pragma once
 
 #include "selectioncontext.h"
 
@@ -71,5 +70,3 @@ void removePositioner(const SelectionContext &selectionContext);
 
 } // namespace ModelNodeOperationso
 } //QmlDesigner
-
-#endif //MODELNODEOPERATIONS_H
diff --git a/src/plugins/qmldesigner/components/componentcore/selectioncontext.h b/src/plugins/qmldesigner/components/componentcore/selectioncontext.h
index 662c3b1ae9..17e5981e6d 100644
--- a/src/plugins/qmldesigner/components/componentcore/selectioncontext.h
+++ b/src/plugins/qmldesigner/components/componentcore/selectioncontext.h
@@ -28,8 +28,7 @@
 #include <QPointF>
 #include <QPointer>
 
-#ifndef SELECTIONCONTEXT_H
-#define SELECTIONCONTEXT_H
+#pragma once
 
 namespace QmlDesigner {
 
@@ -72,5 +71,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif //SELECTIONCONTEXT_H
diff --git a/src/plugins/qmldesigner/components/debugview/debugview.h b/src/plugins/qmldesigner/components/debugview/debugview.h
index 898a85c748..51344f0696 100644
--- a/src/plugins/qmldesigner/components/debugview/debugview.h
+++ b/src/plugins/qmldesigner/components/debugview/debugview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGVIEW_H
-#define DEBUGVIEW_H
+#pragma once
 
 #include <abstractview.h>
 #include <QPointer>
@@ -101,5 +100,3 @@ private: //variables
 } // namespace Internal
 
 } // namespace QmlDesigner
-
-#endif // DEBUGVIEW_H
diff --git a/src/plugins/qmldesigner/components/debugview/debugviewwidget.h b/src/plugins/qmldesigner/components/debugview/debugviewwidget.h
index 34329f45c3..ca6cdfb8fa 100644
--- a/src/plugins/qmldesigner/components/debugview/debugviewwidget.h
+++ b/src/plugins/qmldesigner/components/debugview/debugviewwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGVIEWWIDGET_H
-#define DEBUGVIEWWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -56,6 +55,3 @@ private:
 } //namespace Internal
 
 } //namespace QmlDesigner
-
-#endif //DEBUGVIEWWIDGET_H
-
diff --git a/src/plugins/qmldesigner/components/importmanager/importlabel.h b/src/plugins/qmldesigner/components/importmanager/importlabel.h
index 35150ac7c1..6df9e0286c 100644
--- a/src/plugins/qmldesigner/components/importmanager/importlabel.h
+++ b/src/plugins/qmldesigner/components/importmanager/importlabel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMPORTLABEL_H
-#define IMPORTLABEL_H
+#pragma once
 
 #include <QLabel>
 #include <QPushButton>
@@ -56,4 +55,3 @@ private:
 };
 
 }
-#endif // IMPORTLABEL_H
diff --git a/src/plugins/qmldesigner/components/importmanager/importmanagercombobox.h b/src/plugins/qmldesigner/components/importmanager/importmanagercombobox.h
index 3378621c45..dd566a12bc 100644
--- a/src/plugins/qmldesigner/components/importmanager/importmanagercombobox.h
+++ b/src/plugins/qmldesigner/components/importmanager/importmanagercombobox.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMPORTMANAGERCOMBOBOX_H
-#define IMPORTMANAGERCOMBOBOX_H
+#pragma once
 
 #include <QComboBox>
 
@@ -37,5 +36,3 @@ public:
 protected:
     void paintEvent(QPaintEvent *e);
 };
-
-#endif // IMPORTMANAGERCOMBOBOX_H
diff --git a/src/plugins/qmldesigner/components/importmanager/importmanagerview.h b/src/plugins/qmldesigner/components/importmanager/importmanagerview.h
index e4a2a8630f..340f81fd65 100644
--- a/src/plugins/qmldesigner/components/importmanager/importmanagerview.h
+++ b/src/plugins/qmldesigner/components/importmanager/importmanagerview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_IMPORTMANAGERVIEW_H
-#define QMLDESIGNER_IMPORTMANAGERVIEW_H
+#pragma once
 
 #include <abstractview.h>
 #include <QPointer>
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_IMPORTMANAGERVIEW_H
diff --git a/src/plugins/qmldesigner/components/importmanager/importswidget.h b/src/plugins/qmldesigner/components/importmanager/importswidget.h
index 647d68e9d3..bfac06f75c 100644
--- a/src/plugins/qmldesigner/components/importmanager/importswidget.h
+++ b/src/plugins/qmldesigner/components/importmanager/importswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_IMPORTSWIDGET_H
-#define QMLDESIGNER_IMPORTSWIDGET_H
+#pragma once
 
 #include <import.h>
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_IMPORTSWIDGET_H
diff --git a/src/plugins/qmldesigner/components/integration/componentaction.h b/src/plugins/qmldesigner/components/integration/componentaction.h
index a61b3147fc..4d697cc7f4 100644
--- a/src/plugins/qmldesigner/components/integration/componentaction.h
+++ b/src/plugins/qmldesigner/components/integration/componentaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTACTION_H
-#define COMPONENTACTION_H
+#pragma once
 
 #include <QWidgetAction>
 #include <QPointer>
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // COMPONENTACTION_H
diff --git a/src/plugins/qmldesigner/components/integration/componentview.h b/src/plugins/qmldesigner/components/integration/componentview.h
index 865c1cf4f0..4740a7196a 100644
--- a/src/plugins/qmldesigner/components/integration/componentview.h
+++ b/src/plugins/qmldesigner/components/integration/componentview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTVIEW_H
-#define COMPONENTVIEW_H
+#pragma once
 
 #include <abstractview.h>
 #include <modelnode.h>
@@ -94,5 +93,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // COMPONENTVIEW_H
diff --git a/src/plugins/qmldesigner/components/integration/designdocumentview.h b/src/plugins/qmldesigner/components/integration/designdocumentview.h
index 45a6f7ae0b..d3fc45c38d 100644
--- a/src/plugins/qmldesigner/components/integration/designdocumentview.h
+++ b/src/plugins/qmldesigner/components/integration/designdocumentview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DesignDocumentVIEW_H
-#define DesignDocumentVIEW_H
+#pragma once
 
 #include <abstractview.h>
 #include <modelmerger.h>
@@ -54,5 +53,3 @@ private:
 };
 
 }// namespace QmlDesigner
-
-#endif // DesignDocumentVIEW_H
diff --git a/src/plugins/qmldesigner/components/integration/xuifiledialog.h b/src/plugins/qmldesigner/components/integration/xuifiledialog.h
index cc1d2af48c..1ac647322e 100644
--- a/src/plugins/qmldesigner/components/integration/xuifiledialog.h
+++ b/src/plugins/qmldesigner/components/integration/xuifiledialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef XUIFILEDIALOG_H
-#define XUIFILEDIALOG_H
+#pragma once
 
 #include <QString>
 #include <QStringList>
@@ -57,5 +56,3 @@ signals:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // XUIFILEDIALOG_H
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryimageprovider.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryimageprovider.h
index 613520d8d8..54b6424d71 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryimageprovider.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryimageprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMLIBRARYIMAGEPROVIDER_H
-#define ITEMLIBRARYIMAGEPROVIDER_H
+#pragma once
 
 #include <QQuickImageProvider>
 
@@ -43,5 +42,3 @@ public:
 }
 
 }
-
-#endif // ITEMLIBRARYIMAGEPROVIDER_H
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryitem.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryitem.h
index f411ccbd0f..c5ac7d8d87 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryitem.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_ITEMLIBRARYITEMMODEL_H
-#define QMLDESIGNER_ITEMLIBRARYITEMMODEL_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_ITEMLIBRARYITEMMODEL_H
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.h
index 78f5fa3e2e..bf1a211248 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarymodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMLIBRARYMODEL_H
-#define ITEMLIBRARYMODEL_H
+#pragma once
 
 #include <QMap>
 #include <QIcon>
@@ -96,5 +95,3 @@ private: // variables
 } // namespace QmlDesigner
 
 QML_DECLARE_TYPE(QmlDesigner::ItemLibraryModel)
-#endif // ITEMLIBRARYMODEL_H
-
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysection.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysection.h
index 74e52d9785..d2a1d914b1 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysection.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_ITEMLIBRARYSECTION_H
-#define QMLDESIGNER_ITEMLIBRARYSECTION_H
+#pragma once
 
 #include "itemlibrarysectionmodel.h"
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_ITEMLIBRARYSECTION_H
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysectionmodel.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysectionmodel.h
index dc5a11737d..6e5d9ebf4b 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysectionmodel.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarysectionmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_ITEMLIBRARYSECTIONMODEL_H
-#define QMLDESIGNER_ITEMLIBRARYSECTIONMODEL_H
+#pragma once
 
 #include "itemlibrarymodel.h"
 
@@ -66,5 +65,3 @@ private: // variables
 } // namespace QmlDesigner
 
 QML_DECLARE_TYPE(QmlDesigner::ItemLibrarySectionModel)
-
-#endif // QMLDESIGNER_ITEMLIBRARYSECTIONMODEL_H
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarytreeview.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarytreeview.h
index 2a79a69919..37faaeef68 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarytreeview.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarytreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMLIBRARYCOMPONENTS_H
-#define ITEMLIBRARYCOMPONENTS_H
+#pragma once
 
 #include <QTreeView>
 #include <QStyledItemDelegate>
@@ -61,6 +60,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // ITEMLIBRARYCOMPONENTS_H
-
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryview.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryview.h
index f2d987cab9..6391d7bc4f 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibraryview.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibraryview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMLIBRARYVIEW_H
-#define ITEMLIBRARYVIEW_H
+#pragma once
 
 #include <abstractview.h>
 
@@ -63,4 +62,3 @@ private:
 };
 
 }
-#endif // ITEMLIBRARYVIEW_H
diff --git a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
index ecdf6aa171..3665d34a95 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/itemlibrarywidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMLIBRARYWIDGET_H
-#define ITEMLIBRARYWIDGET_H
+#pragma once
 
 #include "itemlibraryinfo.h"
 #include "itemlibrarytreeview.h"
@@ -138,6 +137,3 @@ private:
 };
 
 }
-
-#endif // ITEMLIBRARYWIDGET_H
-
diff --git a/src/plugins/qmldesigner/components/itemlibrary/resourceitemdelegate.h b/src/plugins/qmldesigner/components/itemlibrary/resourceitemdelegate.h
index 63aa7477fd..f90bb4f4be 100644
--- a/src/plugins/qmldesigner/components/itemlibrary/resourceitemdelegate.h
+++ b/src/plugins/qmldesigner/components/itemlibrary/resourceitemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_RESOURCEITEMDELEGATE_H
-#define QMLDESIGNER_RESOURCEITEMDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 #include <QFileSystemModel>
@@ -50,5 +49,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_RESOURCEITEMDELEGATE_H
diff --git a/src/plugins/qmldesigner/components/logger/logger.h b/src/plugins/qmldesigner/components/logger/logger.h
index 3eae0fceb8..64002a8bde 100644
--- a/src/plugins/qmldesigner/components/logger/logger.h
+++ b/src/plugins/qmldesigner/components/logger/logger.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QLOGGER_H
-#define QLOGGER_H
+#pragma once
 
 #include <QString>
 #include <QStringList>
@@ -73,5 +72,3 @@ private:
     QTime *m_timer;
 
 };
-
-#endif // QLOGGER_H
diff --git a/src/plugins/qmldesigner/components/navigator/iconcheckboxitemdelegate.h b/src/plugins/qmldesigner/components/navigator/iconcheckboxitemdelegate.h
index fa3ac6f89d..553a7f8c8e 100644
--- a/src/plugins/qmldesigner/components/navigator/iconcheckboxitemdelegate.h
+++ b/src/plugins/qmldesigner/components/navigator/iconcheckboxitemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_ICONCHECKBOXITEMDELEGATE_H
-#define QMLDESIGNER_ICONCHECKBOXITEMDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -53,5 +52,3 @@ private:
     NavigatorTreeModel *m_navigatorTreeModel;
 };
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_ICONCHECKBOXITEMDELEGATE_H
diff --git a/src/plugins/qmldesigner/components/navigator/nameitemdelegate.h b/src/plugins/qmldesigner/components/navigator/nameitemdelegate.h
index 3df50b986d..281a2ea8a4 100644
--- a/src/plugins/qmldesigner/components/navigator/nameitemdelegate.h
+++ b/src/plugins/qmldesigner/components/navigator/nameitemdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_NAMEITEMDELEGATE_H
-#define QMLDESIGNER_NAMEITEMDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_NAMEITEMDELEGATE_H
diff --git a/src/plugins/qmldesigner/components/navigator/navigatortreemodel.h b/src/plugins/qmldesigner/components/navigator/navigatortreemodel.h
index a2b4b33033..f879393e86 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatortreemodel.h
+++ b/src/plugins/qmldesigner/components/navigator/navigatortreemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATORTREEMODEL_H
-#define NAVIGATORTREEMODEL_H
+#pragma once
 
 #include <modelnode.h>
 #include <nodemetainfo.h>
@@ -147,5 +146,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // NAVIGATORTREEMODEL_H
diff --git a/src/plugins/qmldesigner/components/navigator/navigatortreeview.h b/src/plugins/qmldesigner/components/navigator/navigatortreeview.h
index 24f7df7b4b..f5d4caa5ed 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatortreeview.h
+++ b/src/plugins/qmldesigner/components/navigator/navigatortreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATORTREEVIEW_H
-#define NAVIGATORTREEVIEW_H
+#pragma once
 
 #include <QTreeView>
 
@@ -38,5 +37,3 @@ public:
     static void drawSelectionBackground(QPainter *painter, const QStyleOption &option);
 };
 }
-
-#endif // NAVIGATORTREEVIEW_H
diff --git a/src/plugins/qmldesigner/components/navigator/navigatorview.h b/src/plugins/qmldesigner/components/navigator/navigatorview.h
index 537f17ae74..bbef3ec1d0 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatorview.h
+++ b/src/plugins/qmldesigner/components/navigator/navigatorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATORVIEW_H
-#define NAVIGATORVIEW_H
+#pragma once
 
 #include <abstractview.h>
 
@@ -99,4 +98,3 @@ private:
 };
 
 }
-#endif // NAVIGATORVIEW_H
diff --git a/src/plugins/qmldesigner/components/navigator/navigatorwidget.h b/src/plugins/qmldesigner/components/navigator/navigatorwidget.h
index 917151dda9..526004cf84 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatorwidget.h
+++ b/src/plugins/qmldesigner/components/navigator/navigatorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NAVIGATORWIDGET_H
-#define NAVIGATORWIDGET_H
+#pragma once
 
 #include <QFrame>
 #include <QPointer>
@@ -64,5 +63,3 @@ private: // variables
 };
 
 }
-
-#endif // NAVIGATORWIDGET_H
diff --git a/src/plugins/qmldesigner/components/pluginmanager/iplugin.h b/src/plugins/qmldesigner/components/pluginmanager/iplugin.h
index 2ceaab67cb..609cee3f4b 100644
--- a/src/plugins/qmldesigner/components/pluginmanager/iplugin.h
+++ b/src/plugins/qmldesigner/components/pluginmanager/iplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IPLUGIN_H
-#define IPLUGIN_H
+#pragma once
 
 #include <QObject>
 
@@ -50,5 +49,3 @@ public:
 QT_BEGIN_NAMESPACE
 Q_DECLARE_INTERFACE(QmlDesigner::IPlugin, QMLDESIGNER_PLUGIN_INTERFACE)
 QT_END_NAMESPACE
-
-#endif // IPLUGIN_H
diff --git a/src/plugins/qmldesigner/components/pluginmanager/pluginmanager.h b/src/plugins/qmldesigner/components/pluginmanager/pluginmanager.h
index d971c2d710..819d216e4a 100644
--- a/src/plugins/qmldesigner/components/pluginmanager/pluginmanager.h
+++ b/src/plugins/qmldesigner/components/pluginmanager/pluginmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINMANAGER_H
-#define PLUGINMANAGER_H
+#pragma once
 
 #include "pluginpath.h"
 
@@ -72,4 +71,3 @@ private: // variables
 };
 
 } // namespace QmlDesigner
-#endif // PLUGINMANAGER_H
diff --git a/src/plugins/qmldesigner/components/pluginmanager/pluginpath.h b/src/plugins/qmldesigner/components/pluginmanager/pluginpath.h
index 7b526e5ca2..c1d7e81c22 100644
--- a/src/plugins/qmldesigner/components/pluginmanager/pluginpath.h
+++ b/src/plugins/qmldesigner/components/pluginmanager/pluginpath.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLUGINPATH_H
-#define PLUGINPATH_H
+#pragma once
 
 #include <QObject>
 #include <QPointer>
@@ -91,4 +90,3 @@ private:
     PluginDataList m_plugins;
 };
 } // namespace QmlDesigner
-#endif // PLUGINPATH_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/designerpropertymap.h b/src/plugins/qmldesigner/components/propertyeditor/designerpropertymap.h
index 12e8feb7f8..d520cab714 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/designerpropertymap.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/designerpropertymap.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNERPROPERTYMAP_H
-#define DESIGNERPROPERTYMAP_H
+#pragma once
 
 #include <QQmlPropertyMap>
 #include <QtQml>
@@ -44,5 +43,3 @@ public:
 };
 
 } //QmlDesigner
-
-#endif // DESIGNERPROPERTYMAP_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/fileresourcesmodel.h b/src/plugins/qmldesigner/components/propertyeditor/fileresourcesmodel.h
index 239cda43cc..37faaa9baf 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/fileresourcesmodel.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/fileresourcesmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILERESOURCESMODEL_H
-#define FILERESOURCESMODEL_H
+#pragma once
 
 #include <qmlitemnode.h>
 
@@ -83,5 +82,3 @@ private:
 };
 
 QML_DECLARE_TYPE(FileResourcesModel)
-
-#endif // FILERESOURCESMODEL_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/gradientmodel.h b/src/plugins/qmldesigner/components/propertyeditor/gradientmodel.h
index 9271cf17c3..56d8ce914d 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/gradientmodel.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/gradientmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GRADIENTMODEL_H
-#define GRADIENTMODEL_H
+#pragma once
 
 #include <qmlitemnode.h>
 
@@ -88,5 +87,3 @@ private:
 };
 
 QML_DECLARE_TYPE(GradientModel)
-
-#endif // GRADIENTMODEL_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorcontextobject.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorcontextobject.h
index 1794926079..785145c09a 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorcontextobject.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorcontextobject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYEDITORCONTEXTOBJECT_H
-#define PROPERTYEDITORCONTEXTOBJECT_H
+#pragma once
 
 #include <QObject>
 #include <QUrl>
@@ -132,5 +131,3 @@ private:
 };
 
 } //QmlDesigner {
-
-#endif // PROPERTYEDITORCONTEXTOBJECT_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.h
index 1fe09687f5..af4ceefff4 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorqmlbackend.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYEDITORQMLBACKEND_H
-#define PROPERTYEDITORQMLBACKEND_H
+#pragma once
 
 #include "qmlanchorbindingproxy.h"
 #include "designerpropertymap.h"
@@ -105,5 +104,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif //PROPERTYEDITORQMLBACKEND_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditortransaction.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditortransaction.h
index 0854fe8fba..9a1ddca9bd 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditortransaction.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditortransaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYEDITORTRANSACTION_H
-#define PROPERTYEDITORTRANSACTION_H
+#pragma once
 
 #include "propertyeditorview.h"
 
@@ -49,5 +48,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // PROPERTYEDITORTRANSACTION_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorvalue.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorvalue.h
index c1f84809ba..26991db90d 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorvalue.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorvalue.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYEDITORVALUE_H
-#define PROPERTYEDITORVALUE_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 
@@ -155,6 +154,3 @@ private: //variables
 QML_DECLARE_TYPE(PropertyEditorValue)
 QML_DECLARE_TYPE(PropertyEditorNodeWrapper)
 QML_DECLARE_TYPE(QQmlPropertyMap)
-
-
-#endif // PROPERTYEDITORVALUE_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorview.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorview.h
index b3bc9d5c22..28af9cce67 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorview.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYEDITORVIEW_H
-#define PROPERTYEDITORVIEW_H
+#pragma once
 
 #include <abstractview.h>
 #include <QHash>
@@ -116,5 +115,3 @@ private: //variables
 };
 
 } //QmlDesigner
-
-#endif // PROPERTYEDITORVIEW_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorwidget.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorwidget.h
index 4ca0b91f17..445a454f5d 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorwidget.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYEDITORWIDGET_H
-#define PROPERTYEDITORWIDGET_H
+#pragma once
 
 #include <QStackedWidget>
 
@@ -46,5 +45,3 @@ protected:
 };
 
 } //QmlDesigner
-
-#endif //PROPERTYEDITORWIDGET_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/qmlanchorbindingproxy.h b/src/plugins/qmldesigner/components/propertyeditor/qmlanchorbindingproxy.h
index 0f768d6ed0..e73c55629f 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/qmlanchorbindingproxy.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/qmlanchorbindingproxy.h
@@ -251,4 +251,3 @@ private:
 
 
 #endif //QmlAnchorBindingProxy
-
diff --git a/src/plugins/qmldesigner/components/propertyeditor/qmlmodelnodeproxy.h b/src/plugins/qmldesigner/components/propertyeditor/qmlmodelnodeproxy.h
index 511fb99dbb..f60e4ce024 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/qmlmodelnodeproxy.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/qmlmodelnodeproxy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLMODELNODEPROXY_H
-#define QMLMODELNODEPROXY_H
+#pragma once
 
 #include <qmlitemnode.h>
 
@@ -64,5 +63,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // QMLMODELNODEPROXY_H
diff --git a/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.h b/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.h
index f3f354eb85..0394c72ec3 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.h
+++ b/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QUICK2PROERTYEDITORVIEW_H
-#define QUICK2PROERTYEDITORVIEW_H
+#pragma once
 
 #include <QQuickWidget>
 
@@ -42,5 +41,3 @@ public:
 };
 
 } //QmlDesigner
-
-#endif // QUICK2PROERTYEDITORVIEW_H
diff --git a/src/plugins/qmldesigner/components/stateseditor/stateseditorimageprovider.h b/src/plugins/qmldesigner/components/stateseditor/stateseditorimageprovider.h
index 36e630ece0..9576152009 100644
--- a/src/plugins/qmldesigner/components/stateseditor/stateseditorimageprovider.h
+++ b/src/plugins/qmldesigner/components/stateseditor/stateseditorimageprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STATESEDITORIMAGEPROVIDER_H
-#define STATESEDITORIMAGEPROVIDER_H
+#pragma once
 
 #include"abstractview.h"
 
@@ -51,6 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // STATESEDITORIMAGEPROVIDER_H
-
diff --git a/src/plugins/qmldesigner/components/stateseditor/stateseditormodel.h b/src/plugins/qmldesigner/components/stateseditor/stateseditormodel.h
index 4bdc1127b5..0dbc8c0925 100644
--- a/src/plugins/qmldesigner/components/stateseditor/stateseditormodel.h
+++ b/src/plugins/qmldesigner/components/stateseditor/stateseditormodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STATESEDITORMODEL_H
-#define STATESEDITORMODEL_H
+#pragma once
 
 #include <QAbstractListModel>
 #include <QPointer>
@@ -72,5 +71,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // STATESEDITORMODEL_H
diff --git a/src/plugins/qmldesigner/components/stateseditor/stateseditorview.h b/src/plugins/qmldesigner/components/stateseditor/stateseditorview.h
index c74b92fe33..c7215874b6 100644
--- a/src/plugins/qmldesigner/components/stateseditor/stateseditorview.h
+++ b/src/plugins/qmldesigner/components/stateseditor/stateseditorview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STATESEDITORVIEW_H
-#define STATESEDITORVIEW_H
+#pragma once
 
 #include <abstractview.h>
 
@@ -97,5 +96,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // STATESEDITORVIEW_H
diff --git a/src/plugins/qmldesigner/components/stateseditor/stateseditorwidget.h b/src/plugins/qmldesigner/components/stateseditor/stateseditorwidget.h
index 3af714c182..e82e48fa1f 100644
--- a/src/plugins/qmldesigner/components/stateseditor/stateseditorwidget.h
+++ b/src/plugins/qmldesigner/components/stateseditor/stateseditorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STATESEDITORWIDGET_H
-#define STATESEDITORWIDGET_H
+#pragma once
 
 #include <QQuickWidget>
 #include <QPointer>
@@ -70,5 +69,3 @@ private:
 };
 
 }
-
-#endif // STATESEDITORWIDGET_H
diff --git a/src/plugins/qmldesigner/componentsplugin/addtabdesigneraction.h b/src/plugins/qmldesigner/componentsplugin/addtabdesigneraction.h
index 3429dc1fb4..66b8a19b82 100644
--- a/src/plugins/qmldesigner/componentsplugin/addtabdesigneraction.h
+++ b/src/plugins/qmldesigner/componentsplugin/addtabdesigneraction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_TABVIEWDESIGNERACTION_H
-#define QMLDESIGNER_TABVIEWDESIGNERACTION_H
+#pragma once
 
 #include "abstractaction.h"
 
@@ -50,5 +49,3 @@ private slots:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_TABVIEWDESIGNERACTION_H
diff --git a/src/plugins/qmldesigner/componentsplugin/addtabtotabviewdialog.h b/src/plugins/qmldesigner/componentsplugin/addtabtotabviewdialog.h
index 389e28c611..8128985d64 100644
--- a/src/plugins/qmldesigner/componentsplugin/addtabtotabviewdialog.h
+++ b/src/plugins/qmldesigner/componentsplugin/addtabtotabviewdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDTABTOTABVIEWDIALOG_H
-#define ADDTABTOTABVIEWDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -46,5 +45,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // ADDTABTOTABVIEWDIALOG_H
diff --git a/src/plugins/qmldesigner/componentsplugin/componentsplugin.h b/src/plugins/qmldesigner/componentsplugin/componentsplugin.h
index d714fc8b77..1f43ada810 100644
--- a/src/plugins/qmldesigner/componentsplugin/componentsplugin.h
+++ b/src/plugins/qmldesigner/componentsplugin/componentsplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTSPLUGIN_H
-#define COMPONENTSPLUGIN_H
+#pragma once
 
 #include <iwidgetplugin.h>
 
@@ -51,6 +50,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-
-#endif //COMPONENTSPLUGIN_H
diff --git a/src/plugins/qmldesigner/componentsplugin/entertabdesigneraction.h b/src/plugins/qmldesigner/componentsplugin/entertabdesigneraction.h
index 5207aa652b..862790da00 100644
--- a/src/plugins/qmldesigner/componentsplugin/entertabdesigneraction.h
+++ b/src/plugins/qmldesigner/componentsplugin/entertabdesigneraction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ENTERTABDESIGNERACTION_H
-#define ENTERTABDESIGNERACTION_H
+#pragma once
 
 #include <abstractactiongroup.h>
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // ENTERTABDESIGNERACTION_H
diff --git a/src/plugins/qmldesigner/componentsplugin/tabviewindexmodel.h b/src/plugins/qmldesigner/componentsplugin/tabviewindexmodel.h
index 2105fe0e5b..e10f46a085 100644
--- a/src/plugins/qmldesigner/componentsplugin/tabviewindexmodel.h
+++ b/src/plugins/qmldesigner/componentsplugin/tabviewindexmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TABVIEWINDEXMODEL_H
-#define TABVIEWINDEXMODEL_H
+#pragma once
 
 #include <qmlitemnode.h>
 
@@ -59,5 +58,3 @@ private:
 };
 
 QML_DECLARE_TYPE(TabViewIndexModel)
-
-#endif // TABVIEWINDEXMODEL_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/addarraymembervisitor.h b/src/plugins/qmldesigner/designercore/filemanager/addarraymembervisitor.h
index e178a06ebb..d414e24664 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/addarraymembervisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/addarraymembervisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDARRAYMEMBERVISITOR_H
-#define ADDARRAYMEMBERVISITOR_H
+#pragma once
 
 #include "qmlrewriter.h"
 
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // ADDARRAYMEMBERVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/addobjectvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/addobjectvisitor.h
index ae62bdaa90..2b869cbc50 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/addobjectvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/addobjectvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDOBJECTVISITOR_H
-#define ADDOBJECTVISITOR_H
+#pragma once
 
 #include "qmlrewriter.h"
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // ADDOBJECTVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/addpropertyvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/addpropertyvisitor.h
index ea8a4dd4b0..9da136d82c 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/addpropertyvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/addpropertyvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDPROPERTYVISITOR_H
-#define ADDPROPERTYVISITOR_H
+#pragma once
 
 #include "qmlrefactoring.h"
 #include "qmlrewriter.h"
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // ADDPROPERTYVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/astobjecttextextractor.h b/src/plugins/qmldesigner/designercore/filemanager/astobjecttextextractor.h
index ee4a2b1bf3..a1dfb7b71a 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/astobjecttextextractor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/astobjecttextextractor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ASTOBJECTTEXTEXTRACTOR_H
-#define ASTOBJECTTEXTEXTRACTOR_H
+#pragma once
 
 #include <qmljs/parser/qmljsastvisitor_p.h>
 #include <qmljs/qmljsdocument.h>
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // ASTOBJECTTEXTEXTRACTOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/changeimportsvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/changeimportsvisitor.h
index 2fe05cd088..f498d06aaa 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/changeimportsvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/changeimportsvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CHANGEIMPORTSVISITOR_H
-#define CHANGEIMPORTSVISITOR_H
+#pragma once
 
 #include "import.h"
 #include "qmlrewriter.h"
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // CHANGEIMPORTSVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/changeobjecttypevisitor.h b/src/plugins/qmldesigner/designercore/filemanager/changeobjecttypevisitor.h
index 0f2822a8a2..474f83b944 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/changeobjecttypevisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/changeobjecttypevisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CHANGEOBJECTTYPEVISITOR_H
-#define CHANGEOBJECTTYPEVISITOR_H
+#pragma once
 
 #include "qmlrewriter.h"
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // CHANGEOBJECTTYPEVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/changepropertyvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/changepropertyvisitor.h
index 6b0eeca86a..f97eea0a37 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/changepropertyvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/changepropertyvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CHANGEPROPERTYVISITOR_H
-#define CHANGEPROPERTYVISITOR_H
+#pragma once
 
 #include "qmlrefactoring.h"
 #include "qmlrewriter.h"
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // CHANGEPROPERTYVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/firstdefinitionfinder.h b/src/plugins/qmldesigner/designercore/filemanager/firstdefinitionfinder.h
index 7bc48559b2..9aca188a60 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/firstdefinitionfinder.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/firstdefinitionfinder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FIRSTDEFINITIONFINDER_H
-#define FIRSTDEFINITIONFINDER_H
+#pragma once
 
 #include <qmljs/parser/qmljsastvisitor_p.h>
 #include <qmljs/qmljsdocument.h>
@@ -54,5 +53,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // FIRSTDEFINITIONFINDER_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/moveobjectbeforeobjectvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/moveobjectbeforeobjectvisitor.h
index 6afd688e46..909c77ef70 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/moveobjectbeforeobjectvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/moveobjectbeforeobjectvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MOVEOBJECTBEFOREOBJECTVISITOR_H
-#define MOVEOBJECTBEFOREOBJECTVISITOR_H
+#pragma once
 
 #include "qmlrewriter.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // MOVEOBJECTBEFOREOBJECTVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/moveobjectvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/moveobjectvisitor.h
index 7b499f42ca..cc6d44825d 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/moveobjectvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/moveobjectvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MOVEOBJECTVISITOR_H
-#define MOVEOBJECTVISITOR_H
+#pragma once
 
 #include "qmlrewriter.h"
 
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // MOVEOBJECTVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/objectlengthcalculator.h b/src/plugins/qmldesigner/designercore/filemanager/objectlengthcalculator.h
index e771ef3bf4..e869bb98b4 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/objectlengthcalculator.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/objectlengthcalculator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OBJECTLENGTHCALCULATOR_H
-#define OBJECTLENGTHCALCULATOR_H
+#pragma once
 
 #include <qmljs/parser/qmljsastvisitor_p.h>
 #include <qmljs/qmljsdocument.h>
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // OBJECTLENGTHCALCULATOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/qmlrefactoring.h b/src/plugins/qmldesigner/designercore/filemanager/qmlrefactoring.h
index 4617569cef..d51ca90379 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/qmlrefactoring.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/qmlrefactoring.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLREFACTORING_H
-#define QMLREFACTORING_H
+#pragma once
 
 #include <import.h>
 #include <textmodifier.h>
@@ -75,5 +74,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLREFACTORING_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/qmlrewriter.h b/src/plugins/qmldesigner/designercore/filemanager/qmlrewriter.h
index 62380d2dc0..af54ba8c13 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/qmlrewriter.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/qmlrewriter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLREWRITER_H
-#define QMLREWRITER_H
+#pragma once
 
 #include "textmodifier.h"
 
@@ -92,5 +91,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // QMLREWRITER_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/qmlwarningdialog.h b/src/plugins/qmldesigner/designercore/filemanager/qmlwarningdialog.h
index 143d40ed77..178c32ca5f 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/qmlwarningdialog.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/qmlwarningdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLWARNINGDIALOG_H
-#define QMLWARNINGDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -58,5 +57,3 @@ private:
 } //Internal
 
 } //QmlDesigner
-
-#endif // QMLWARNINGDIALOG_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/removepropertyvisitor.h b/src/plugins/qmldesigner/designercore/filemanager/removepropertyvisitor.h
index 7419d81192..7eb8b53fd9 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/removepropertyvisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/removepropertyvisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOVEPROPERTYVISITOR_H
-#define REMOVEPROPERTYVISITOR_H
+#pragma once
 
 #include <QString>
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // REMOVEPROPERTYVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/filemanager/removeuiobjectmembervisitor.h b/src/plugins/qmldesigner/designercore/filemanager/removeuiobjectmembervisitor.h
index 0d4d1ee785..6fc4d1d0b3 100644
--- a/src/plugins/qmldesigner/designercore/filemanager/removeuiobjectmembervisitor.h
+++ b/src/plugins/qmldesigner/designercore/filemanager/removeuiobjectmembervisitor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOVEUIOBJECTMEMBERVISITOR_H
-#define REMOVEUIOBJECTMEMBERVISITOR_H
+#pragma once
 
 #include <QStack>
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // REMOVEUIOBJECTMEMBERVISITOR_H
diff --git a/src/plugins/qmldesigner/designercore/include/abstractproperty.h b/src/plugins/qmldesigner/designercore/include/abstractproperty.h
index 0c7c23e4fa..ebd286f646 100644
--- a/src/plugins/qmldesigner/designercore/include/abstractproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/abstractproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTPROPERTY_H
-#define ABSTRACTPROPERTY_H
+#pragma once
 
 #include <QPointer>
 #include <QSharedPointer>
@@ -122,5 +121,3 @@ QMLDESIGNERCORE_EXPORT uint qHash(const AbstractProperty& property);
 QMLDESIGNERCORE_EXPORT QTextStream& operator<<(QTextStream &stream, const AbstractProperty &property);
 QMLDESIGNERCORE_EXPORT QDebug operator<<(QDebug debug, const AbstractProperty &AbstractProperty);
 }
-
-#endif //ABSTRACTPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/abstractview.h b/src/plugins/qmldesigner/designercore/include/abstractview.h
index 0807df0496..aae79fc9ef 100644
--- a/src/plugins/qmldesigner/designercore/include/abstractview.h
+++ b/src/plugins/qmldesigner/designercore/include/abstractview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTVIEW_H
-#define ABSTRACTVIEW_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 
@@ -269,5 +268,3 @@ QMLDESIGNERCORE_EXPORT QList<Internal::InternalNodePointer> toInternalNodeList(c
 QMLDESIGNERCORE_EXPORT QList<ModelNode> toModelNodeList(const QList<Internal::InternalNodePointer> &nodeList, AbstractView *view);
 
 }
-
-#endif // ABSTRACTVIEW_H
diff --git a/src/plugins/qmldesigner/designercore/include/anchorline.h b/src/plugins/qmldesigner/designercore/include/anchorline.h
index 0987611feb..98b6951f77 100644
--- a/src/plugins/qmldesigner/designercore/include/anchorline.h
+++ b/src/plugins/qmldesigner/designercore/include/anchorline.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_ANCHORLINE_H
-#define QMLDESIGNER_ANCHORLINE_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_ANCHORLINE_H
diff --git a/src/plugins/qmldesigner/designercore/include/basetexteditmodifier.h b/src/plugins/qmldesigner/designercore/include/basetexteditmodifier.h
index 5e31b4e343..58c1950ebd 100644
--- a/src/plugins/qmldesigner/designercore/include/basetexteditmodifier.h
+++ b/src/plugins/qmldesigner/designercore/include/basetexteditmodifier.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASETEXTEDITMODIFIER_H
-#define BASETEXTEDITMODIFIER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "plaintexteditmodifier.h"
@@ -50,5 +49,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-#endif // BASETEXTEDITMODIFIER_H
diff --git a/src/plugins/qmldesigner/designercore/include/bindingproperty.h b/src/plugins/qmldesigner/designercore/include/bindingproperty.h
index 2dbc2d2197..3c4c6f69c5 100644
--- a/src/plugins/qmldesigner/designercore/include/bindingproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/bindingproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BINDINGPROPERTY_H
-#define BINDINGPROPERTY_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "abstractproperty.h"
@@ -58,5 +57,3 @@ protected:
 };
 
 } // namespace QmlDesigner
-
-#endif // BINDINGPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/bytearraymodifier.h b/src/plugins/qmldesigner/designercore/include/bytearraymodifier.h
index 45390bd2ab..5552f23ae6 100644
--- a/src/plugins/qmldesigner/designercore/include/bytearraymodifier.h
+++ b/src/plugins/qmldesigner/designercore/include/bytearraymodifier.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BYTEARRAYMODIFIER_H
-#define BYTEARRAYMODIFIER_H
+#pragma once
 
 #include <QPlainTextEdit>
 
@@ -50,5 +49,3 @@ private:
 };
 
 }
-
-#endif // BYTEARRAYMODIFIER_H
diff --git a/src/plugins/qmldesigner/designercore/include/componenttextmodifier.h b/src/plugins/qmldesigner/designercore/include/componenttextmodifier.h
index a8dfa6ba82..94b268ada5 100644
--- a/src/plugins/qmldesigner/designercore/include/componenttextmodifier.h
+++ b/src/plugins/qmldesigner/designercore/include/componenttextmodifier.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPONENTTEXTMODIFIER_H
-#define COMPONENTTEXTMODIFIER_H
+#pragma once
 
 #include "textmodifier.h"
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // COMPONENTTEXTMODIFIER_H
diff --git a/src/plugins/qmldesigner/designercore/include/customnotifications.h b/src/plugins/qmldesigner/designercore/include/customnotifications.h
index 90c5a7c8ef..58cc433e7f 100644
--- a/src/plugins/qmldesigner/designercore/include/customnotifications.h
+++ b/src/plugins/qmldesigner/designercore/include/customnotifications.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMNOTIFICATIONS_H
-#define CUSTOMNOTIFICATIONS_H
+#pragma once
 
 #include <QString>
 
@@ -34,5 +33,3 @@ const QString StartRewriterAmend = QStringLiteral("__start rewriter amend__");
 const QString EndRewriterAmend = QStringLiteral("__end rewriter amend__");
 
 }
-
-#endif //CUSTOMNOTIFICATIONS_H
diff --git a/src/plugins/qmldesigner/designercore/include/exception.h b/src/plugins/qmldesigner/designercore/include/exception.h
index 31514fc887..ea9a5ac876 100644
--- a/src/plugins/qmldesigner/designercore/include/exception.h
+++ b/src/plugins/qmldesigner/designercore/include/exception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXCEPTION_H
-#define EXCEPTION_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 
@@ -67,6 +66,3 @@ private:
 QMLDESIGNERCORE_EXPORT QDebug operator<<(QDebug debug, const Exception &exception);
 
 }
-
-
-#endif // EXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/forwardview.h b/src/plugins/qmldesigner/designercore/include/forwardview.h
index 5c94ae22d1..b34cd107e9 100644
--- a/src/plugins/qmldesigner/designercore/include/forwardview.h
+++ b/src/plugins/qmldesigner/designercore/include/forwardview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORWARDVIEW_H
-#define FORWARDVIEW_H
+#pragma once
 
 #include <abstractview.h>
 
@@ -286,5 +285,3 @@ ViewType *ForwardView<ViewType>::firstView() const
 
 
 } // namespace QmlDesigner
-
-#endif // FORWARDVIEW_H
diff --git a/src/plugins/qmldesigner/designercore/include/import.h b/src/plugins/qmldesigner/designercore/include/import.h
index 6cd6a801ee..573e682c0b 100644
--- a/src/plugins/qmldesigner/designercore/include/import.h
+++ b/src/plugins/qmldesigner/designercore/include/import.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IMPORT_H
-#define IMPORT_H
+#pragma once
 
 #include <QString>
 #include <QStringList>
@@ -77,5 +76,3 @@ QMLDESIGNERCORE_EXPORT uint qHash(const Import &import);
 } // namespace QmlDesigner
 
 Q_DECLARE_METATYPE(QmlDesigner::Import)
-
-#endif // IMPORT_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidargumentexception.h b/src/plugins/qmldesigner/designercore/include/invalidargumentexception.h
index 295282a56b..b3b4b86a29 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidargumentexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidargumentexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDARGUMENTEXCEPTION_H
-#define INVALIDARGUMENTEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -48,5 +47,3 @@ private:
 };
 
 }
-
-#endif // INVALIDARGUMENTEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalididexception.h b/src/plugins/qmldesigner/designercore/include/invalididexception.h
index f1a59e69ab..7f74ac7deb 100644
--- a/src/plugins/qmldesigner/designercore/include/invalididexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalididexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDIDEXCEPTION_H
-#define INVALIDIDEXCEPTION_H
+#pragma once
 
 #include "invalidargumentexception.h"
 
@@ -56,5 +55,3 @@ private:
 };
 
 }
-
-#endif // INVALIDIDEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidmetainfoexception.h b/src/plugins/qmldesigner/designercore/include/invalidmetainfoexception.h
index 72f1c1b424..079d3e27d6 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidmetainfoexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidmetainfoexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDMETAINFOEXCEPTION_H
-#define INVALIDMETAINFOEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -42,5 +41,3 @@ public:
 };
 
 }
-
-#endif // INVALIDMETAINFOEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidmodelnodeexception.h b/src/plugins/qmldesigner/designercore/include/invalidmodelnodeexception.h
index a51b41ea90..e1a38d00c8 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidmodelnodeexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidmodelnodeexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDMODELNODEEXCEPTION_H
-#define INVALIDMODELNODEEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -42,5 +41,3 @@ public:
 };
 
 }
-
-#endif // INVALIDMODELNODEEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidmodelstateexception.h b/src/plugins/qmldesigner/designercore/include/invalidmodelstateexception.h
index ebd92aeb11..76d48e880a 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidmodelstateexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidmodelstateexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDMODELSTATEEXCEPTION_H
-#define INVALIDMODELSTATEEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -42,5 +41,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-#endif // INVALIDMODELSTATEEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidpropertyexception.h b/src/plugins/qmldesigner/designercore/include/invalidpropertyexception.h
index 5bbe02e265..38a9e86290 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidpropertyexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidpropertyexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDPROPERTYEXCEPTION_H
-#define INVALIDPROPERTYEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -46,5 +45,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // INVALIDPROPERTYEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidqmlsourceexception.h b/src/plugins/qmldesigner/designercore/include/invalidqmlsourceexception.h
index 63b7c8a580..9793bb4ddb 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidqmlsourceexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidqmlsourceexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDQMLSOURCEEXCEPTION_H
-#define INVALIDQMLSOURCEEXCEPTION_H
+#pragma once
 
 #include <exception.h>
 
@@ -46,5 +45,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // INVALIDQMLSOURCEEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidreparentingexception.h b/src/plugins/qmldesigner/designercore/include/invalidreparentingexception.h
index 316dee31e7..2460ceba1b 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidreparentingexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidreparentingexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDREPARENTINGEXCEPTION_H
-#define INVALIDREPARENTINGEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -41,5 +40,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-#endif // INVALIDREPARENTINGEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/invalidslideindexexception.h b/src/plugins/qmldesigner/designercore/include/invalidslideindexexception.h
index 82110299b8..7f95604c7b 100644
--- a/src/plugins/qmldesigner/designercore/include/invalidslideindexexception.h
+++ b/src/plugins/qmldesigner/designercore/include/invalidslideindexexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INVALIDSLIDEINDEXEXCEPTION_H
-#define INVALIDSLIDEINDEXEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -40,5 +39,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-#endif // INVALIDSLIDEINDEXEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/itemlibraryinfo.h b/src/plugins/qmldesigner/designercore/include/itemlibraryinfo.h
index ff2e1fb693..68df5eced9 100644
--- a/src/plugins/qmldesigner/designercore/include/itemlibraryinfo.h
+++ b/src/plugins/qmldesigner/designercore/include/itemlibraryinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMLIBRARYINFO_H
-#define ITEMLIBRARYINFO_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -120,5 +119,3 @@ private: // variables
 } // namespace QmlDesigner
 
 Q_DECLARE_METATYPE(QmlDesigner::ItemLibraryEntry)
-
-#endif // ITEMLIBRARYINFO_H
diff --git a/src/plugins/qmldesigner/designercore/include/iwidgetplugin.h b/src/plugins/qmldesigner/designercore/include/iwidgetplugin.h
index ec59ec1af2..f85ad1e144 100644
--- a/src/plugins/qmldesigner/designercore/include/iwidgetplugin.h
+++ b/src/plugins/qmldesigner/designercore/include/iwidgetplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IWIDGETPLUGIN_H
-#define IWIDGETPLUGIN_H
+#pragma once
 
 #include <QObject>
 
@@ -46,5 +45,3 @@ public:
 QT_BEGIN_NAMESPACE
 Q_DECLARE_INTERFACE(QmlDesigner::IWidgetPlugin, QMLDESIGNER_WIDGETPLUGIN_INTERFACE)
 QT_END_NAMESPACE
-
-#endif // IWIDGETPLUGIN_H
diff --git a/src/plugins/qmldesigner/designercore/include/mathutils.h b/src/plugins/qmldesigner/designercore/include/mathutils.h
index eec4660dfb..5e35d77111 100644
--- a/src/plugins/qmldesigner/designercore/include/mathutils.h
+++ b/src/plugins/qmldesigner/designercore/include/mathutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MATHUTILS_H
-#define MATHUTILS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -38,5 +37,3 @@ inline double round(double value, int digits)
 
 
 }
-
-#endif // MATHUTILS_H
diff --git a/src/plugins/qmldesigner/designercore/include/metainfo.h b/src/plugins/qmldesigner/designercore/include/metainfo.h
index d5d5e406b5..90d94c324a 100644
--- a/src/plugins/qmldesigner/designercore/include/metainfo.h
+++ b/src/plugins/qmldesigner/designercore/include/metainfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef METAINFO_H
-#define METAINFO_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -83,5 +82,3 @@ private:
 };
 
 } //namespace QmlDesigner
-
-#endif // METAINFO_H
diff --git a/src/plugins/qmldesigner/designercore/include/metainforeader.h b/src/plugins/qmldesigner/designercore/include/metainforeader.h
index 9f1904e6d7..f2e7c81333 100644
--- a/src/plugins/qmldesigner/designercore/include/metainforeader.h
+++ b/src/plugins/qmldesigner/designercore/include/metainforeader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef METAINFOREADER_H
-#define METAINFOREADER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include <metainfo.h>
@@ -117,4 +116,3 @@ private:
 
 }
 }
-#endif // METAINFOREADER_H
diff --git a/src/plugins/qmldesigner/designercore/include/model.h b/src/plugins/qmldesigner/designercore/include/model.h
index c18b63292b..dafc4d2c46 100644
--- a/src/plugins/qmldesigner/designercore/include/model.h
+++ b/src/plugins/qmldesigner/designercore/include/model.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNERMODEL_H
-#define DESIGNERMODEL_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include <QObject>
@@ -118,5 +117,3 @@ public:
 };
 
 }
-
-#endif // DESIGNERMODEL_H
diff --git a/src/plugins/qmldesigner/designercore/include/modelmerger.h b/src/plugins/qmldesigner/designercore/include/modelmerger.h
index bf680675d9..b49bfeb24b 100644
--- a/src/plugins/qmldesigner/designercore/include/modelmerger.h
+++ b/src/plugins/qmldesigner/designercore/include/modelmerger.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELMERGER_H
-#define MODELMERGER_H
+#pragma once
 
 
 #include <QPointer>
@@ -51,5 +50,3 @@ private:
 };
 
 } //namespace QmlDesigner
-
-#endif // MODELMERGER_H
diff --git a/src/plugins/qmldesigner/designercore/include/modelnode.h b/src/plugins/qmldesigner/designercore/include/modelnode.h
index e1261b8324..3b8b1fcf68 100644
--- a/src/plugins/qmldesigner/designercore/include/modelnode.h
+++ b/src/plugins/qmldesigner/designercore/include/modelnode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELNODE_H
-#define MODELNODE_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include <QPointer>
@@ -210,5 +209,3 @@ QMLDESIGNERCORE_EXPORT QTextStream& operator<<(QTextStream &stream, const ModelN
 }
 
 Q_DECLARE_METATYPE(QmlDesigner::ModelNode)
-
-#endif // MODELNODE_H
diff --git a/src/plugins/qmldesigner/designercore/include/modelnodepositionstorage.h b/src/plugins/qmldesigner/designercore/include/modelnodepositionstorage.h
index 181fee548a..283c15d1ce 100644
--- a/src/plugins/qmldesigner/designercore/include/modelnodepositionstorage.h
+++ b/src/plugins/qmldesigner/designercore/include/modelnodepositionstorage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELNODEPOSITIONSTORAGE_H
-#define MODELNODEPOSITIONSTORAGE_H
+#pragma once
 
 #include "modelnode.h"
 
@@ -74,5 +73,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // MODELNODEPOSITIONSTORAGE_H
diff --git a/src/plugins/qmldesigner/designercore/include/modificationgroupexception.h b/src/plugins/qmldesigner/designercore/include/modificationgroupexception.h
index 5a61a37fd8..7397ed3e3f 100644
--- a/src/plugins/qmldesigner/designercore/include/modificationgroupexception.h
+++ b/src/plugins/qmldesigner/designercore/include/modificationgroupexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODIFICATIONGROUPEXCEPTION_H
-#define MODIFICATIONGROUPEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -39,5 +38,3 @@ public:
 };
 
 }
-
-#endif // MODIFICATIONGROUPEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/modificationgrouptoken.h b/src/plugins/qmldesigner/designercore/include/modificationgrouptoken.h
index 62a48242a2..dffa975f9d 100644
--- a/src/plugins/qmldesigner/designercore/include/modificationgrouptoken.h
+++ b/src/plugins/qmldesigner/designercore/include/modificationgrouptoken.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODIFICATIONGROUPTOKEN_H
-#define MODIFICATIONGROUPTOKEN_H
+#pragma once
 
 #include <corelib_global.h>
 
@@ -67,5 +66,3 @@ private:
 };
 
 }
-
-#endif // MODIFICATIONGROUPTOKEN_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodeabstractproperty.h b/src/plugins/qmldesigner/designercore/include/nodeabstractproperty.h
index d5c3209f7f..07f75d07a6 100644
--- a/src/plugins/qmldesigner/designercore/include/nodeabstractproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/nodeabstractproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODEABSTRACTPROPERTY_H
-#define NODEABSTRACTPROPERTY_H
+#pragma once
 
 #include "abstractproperty.h"
 
@@ -71,5 +70,3 @@ QMLDESIGNERCORE_EXPORT QTextStream& operator<<(QTextStream &stream, const NodeAb
 QMLDESIGNERCORE_EXPORT QDebug operator<<(QDebug debug, const NodeAbstractProperty &property);
 
 } // namespace QmlDesigner
-
-#endif // NODEABSTRACTPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodeanchors.h b/src/plugins/qmldesigner/designercore/include/nodeanchors.h
index ca1518a297..efa20cc1a3 100644
--- a/src/plugins/qmldesigner/designercore/include/nodeanchors.h
+++ b/src/plugins/qmldesigner/designercore/include/nodeanchors.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODEANCHORS_H
-#define NODEANCHORS_H
+#pragma once
 
 
 #include <QPointer>
@@ -106,5 +105,3 @@ CORESHARED_EXPORT QDebug operator<<(QDebug debug, const NodeAnchors &anchors);
 CORESHARED_EXPORT QTextStream& operator<<(QTextStream &stream, const NodeAnchors &anchors);
 
 } // namespace QmlDesigner
-
-#endif // NODEANCHORS_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodeinstance.h b/src/plugins/qmldesigner/designercore/include/nodeinstance.h
index a5f64c92c6..9595396ae9 100644
--- a/src/plugins/qmldesigner/designercore/include/nodeinstance.h
+++ b/src/plugins/qmldesigner/designercore/include/nodeinstance.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROXYNODEINSTANCE_H
-#define PROXYNODEINSTANCE_H
+#pragma once
 
 #include <QSharedPointer>
 #include <QTransform>
@@ -131,5 +130,3 @@ private:
 bool operator ==(const NodeInstance &first, const NodeInstance &second);
 
 }
-
-#endif // PROXYNODEINSTANCE_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodeinstanceview.h b/src/plugins/qmldesigner/designercore/include/nodeinstanceview.h
index dc11a2296e..4d4ffaa629 100644
--- a/src/plugins/qmldesigner/designercore/include/nodeinstanceview.h
+++ b/src/plugins/qmldesigner/designercore/include/nodeinstanceview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODEINSTANCEVIEW_H
-#define NODEINSTANCEVIEW_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "abstractview.h"
@@ -205,5 +204,3 @@ private: //variables
 };
 
 } // namespace ProxyNodeInstanceView
-
-#endif // NODEINSTANCEVIEW_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodelistproperty.h b/src/plugins/qmldesigner/designercore/include/nodelistproperty.h
index 065b954f20..94af238bef 100644
--- a/src/plugins/qmldesigner/designercore/include/nodelistproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/nodelistproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODELISTPROPERTY_H
-#define NODELISTPROPERTY_H
+#pragma once
 
 
 #include "qmldesignercorelib_global.h"
@@ -60,5 +59,3 @@ protected:
     NodeListProperty(const Internal::InternalNodeListPropertyPointer &internalNodeListProperty, Model* model, AbstractView *view);
 };
 }
-
-#endif //NODELISTROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodemetainfo.h b/src/plugins/qmldesigner/designercore/include/nodemetainfo.h
index c027490aff..d2166b92cc 100644
--- a/src/plugins/qmldesigner/designercore/include/nodemetainfo.h
+++ b/src/plugins/qmldesigner/designercore/include/nodemetainfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODEMETAINFO_H
-#define NODEMETAINFO_H
+#pragma once
 
 #include <QList>
 #include <QString>
@@ -112,5 +111,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // NODEMETAINFO_H
diff --git a/src/plugins/qmldesigner/designercore/include/nodeproperty.h b/src/plugins/qmldesigner/designercore/include/nodeproperty.h
index aaa5cf1b04..6c90488ec6 100644
--- a/src/plugins/qmldesigner/designercore/include/nodeproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/nodeproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODEPROPERTY_H
-#define NODEPROPERTY_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "nodeabstractproperty.h"
@@ -51,5 +50,3 @@ protected:
 };
 
 } // namespace QmlDesigner
-
-#endif // NODEPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/notimplementedexception.h b/src/plugins/qmldesigner/designercore/include/notimplementedexception.h
index d93dc757c0..170d70c89d 100644
--- a/src/plugins/qmldesigner/designercore/include/notimplementedexception.h
+++ b/src/plugins/qmldesigner/designercore/include/notimplementedexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NOTIMPLEMENTEDEXCEPTION_H
-#define NOTIMPLEMENTEDEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -42,5 +41,3 @@ public:
 };
 
 }
-
-#endif // NOTIMPLEMENTEDEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/objectpropertybinding.h b/src/plugins/qmldesigner/designercore/include/objectpropertybinding.h
index a6d948b91c..e2e6f05689 100644
--- a/src/plugins/qmldesigner/designercore/include/objectpropertybinding.h
+++ b/src/plugins/qmldesigner/designercore/include/objectpropertybinding.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OBJECTPROPERTYBINDING_H
-#define OBJECTPROPERTYBINDING_H
+#pragma once
 
 #include <modelnode.h>
 
@@ -47,5 +46,3 @@ private:
 } // namespace QmlDesigner
 
 Q_DECLARE_METATYPE(QmlDesigner::ObjectPropertyBinding);
-
-#endif // OBJECTPROPERTYBINDING_H
diff --git a/src/plugins/qmldesigner/designercore/include/plaintexteditmodifier.h b/src/plugins/qmldesigner/designercore/include/plaintexteditmodifier.h
index c11180e562..7530be3b40 100644
--- a/src/plugins/qmldesigner/designercore/include/plaintexteditmodifier.h
+++ b/src/plugins/qmldesigner/designercore/include/plaintexteditmodifier.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLAINTEXTEDITMODIFIER_H
-#define PLAINTEXTEDITMODIFIER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "textmodifier.h"
@@ -104,5 +103,3 @@ public:
 };
 
 }
-
-#endif // PLAINTEXTEDITMODIFIER_H
diff --git a/src/plugins/qmldesigner/designercore/include/propertybinding.h b/src/plugins/qmldesigner/designercore/include/propertybinding.h
index 7bb04d3bbd..bb2a835eac 100644
--- a/src/plugins/qmldesigner/designercore/include/propertybinding.h
+++ b/src/plugins/qmldesigner/designercore/include/propertybinding.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYBINDING_H
-#define PROPERTYBINDING_H
+#pragma once
 
 #include <QMetaType>
 #include <QSharedPointer>
@@ -54,5 +53,3 @@ private:
 } // namespace QmlDesigner
 
 Q_DECLARE_METATYPE(QmlDesigner::PropertyBinding);
-
-#endif // PROPERTYBINDING_H
diff --git a/src/plugins/qmldesigner/designercore/include/propertycontainer.h b/src/plugins/qmldesigner/designercore/include/propertycontainer.h
index 04ce101921..5eebf01fbd 100644
--- a/src/plugins/qmldesigner/designercore/include/propertycontainer.h
+++ b/src/plugins/qmldesigner/designercore/include/propertycontainer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYCONTAINER_H
-#define PROPERTYCONTAINER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -72,7 +71,3 @@ QMLDESIGNERCORE_EXPORT QDataStream &operator>>(QDataStream &stream, QList<Proper
 QMLDESIGNERCORE_EXPORT QDebug operator<<(QDebug debug, QList<PropertyContainer> &propertyContainerList);
 
 } //namespace QmlDesigner
-
-
-
-#endif //PROPERTYCONTAINER_H
diff --git a/src/plugins/qmldesigner/designercore/include/propertynode.h b/src/plugins/qmldesigner/designercore/include/propertynode.h
index 26e576c185..1f4c90aedb 100644
--- a/src/plugins/qmldesigner/designercore/include/propertynode.h
+++ b/src/plugins/qmldesigner/designercore/include/propertynode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYNODE_H
-#define PROPERTYNODE_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -40,5 +39,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-#endif // PROPERTYNODE_H
diff --git a/src/plugins/qmldesigner/designercore/include/propertyparser.h b/src/plugins/qmldesigner/designercore/include/propertyparser.h
index 2a447a51b7..d5211ca7d5 100644
--- a/src/plugins/qmldesigner/designercore/include/propertyparser.h
+++ b/src/plugins/qmldesigner/designercore/include/propertyparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROPERTYPARSER_H
-#define PROPERTYPARSER_H
+#pragma once
 
 #include <QVariant>
 
@@ -42,5 +41,3 @@ QVariant variantFromString(const QString &s);
 } // namespace PropertyParser
 } // namespace Internal
 } // namespace Designer
-
-#endif // PROPERTYPARSER_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmlanchors.h b/src/plugins/qmldesigner/designercore/include/qmlanchors.h
index 8993f3bd87..cd0736a682 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlanchors.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlanchors.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QmlAnchors_H
-#define QmlAnchors_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include <qmlitemnode.h>
@@ -84,5 +83,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // QmlAnchors_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmlchangeset.h b/src/plugins/qmldesigner/designercore/include/qmlchangeset.h
index c7e38f0522..8440a6a785 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlchangeset.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlchangeset.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLCHANGESET_H
-#define QMLCHANGESET_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include <modelnode.h>
@@ -55,5 +54,3 @@ public:
 };
 
 } //QmlDesigner
-
-#endif // QMLCHANGESET_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmldesignercorelib_global.h b/src/plugins/qmldesigner/designercore/include/qmldesignercorelib_global.h
index 1e9b41ae86..964625cbc1 100644
--- a/src/plugins/qmldesigner/designercore/include/qmldesignercorelib_global.h
+++ b/src/plugins/qmldesigner/designercore/include/qmldesignercorelib_global.h
@@ -23,13 +23,11 @@
 **
 ****************************************************************************/
 
-#ifndef CORELIB_GLOBAL_H
-#define CORELIB_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 #include <QList>
 
-
 // Unnecessary since core isn't a dll any more.
 
 #define TEST_CORESHARED_EXPORT
@@ -75,5 +73,3 @@ enum AnchorLineType {
 //#endif
 
 #include <qglobal.h>
-
-#endif // CORELIB_GLOBAL_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmlitemnode.h b/src/plugins/qmldesigner/designercore/include/qmlitemnode.h
index 0dd601754a..1f1f98ca5c 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlitemnode.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlitemnode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QmlItemNode_H
-#define QmlItemNode_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include <modelnode.h>
@@ -152,6 +151,3 @@ QMLDESIGNERCORE_EXPORT QList<ModelNode> toModelNodeList(const QList<QmlItemNode>
 QMLDESIGNERCORE_EXPORT QList<QmlItemNode> toQmlItemNodeList(const QList<ModelNode> &modelNodeList);
 
 } //QmlDesigner
-
-
-#endif // QmlItemNode_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmlmodelnodefacade.h b/src/plugins/qmldesigner/designercore/include/qmlmodelnodefacade.h
index 00f9df6c82..db2c36381b 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlmodelnodefacade.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlmodelnodefacade.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLMODELNODEFACADE_H
-#define QMLMODELNODEFACADE_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include <modelnode.h>
@@ -59,5 +58,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // QMLMODELNODEFACADE_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmlobjectnode.h b/src/plugins/qmldesigner/designercore/include/qmlobjectnode.h
index 5ce65e09f5..3e9d5ff7e4 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlobjectnode.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlobjectnode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLOBJECTNODE_H
-#define QMLOBJECTNODE_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include "qmlmodelnodefacade.h"
@@ -126,5 +125,3 @@ QMLDESIGNERCORE_EXPORT uint qHash(const QmlObjectNode &node);
 QMLDESIGNERCORE_EXPORT QList<ModelNode> toModelNodeList(const QList<QmlObjectNode> &fxObjectNodeList);
 QMLDESIGNERCORE_EXPORT QList<QmlObjectNode> toQmlObjectNodeList(const QList<ModelNode> &modelNodeList);
 }// QmlDesigner
-
-#endif // QMLOBJECTNODE_H
diff --git a/src/plugins/qmldesigner/designercore/include/qmlstate.h b/src/plugins/qmldesigner/designercore/include/qmlstate.h
index c6a8332c76..4ee216f84f 100644
--- a/src/plugins/qmldesigner/designercore/include/qmlstate.h
+++ b/src/plugins/qmldesigner/designercore/include/qmlstate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLSTATE_H
-#define QMLSTATE_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 #include "qmlmodelnodefacade.h"
@@ -77,6 +76,3 @@ protected:
 };
 
 } //QmlDesigner
-
-
-#endif // QMLSTATE_H
diff --git a/src/plugins/qmldesigner/designercore/include/removebasestateexception.h b/src/plugins/qmldesigner/designercore/include/removebasestateexception.h
index 45ab1c7ff5..f088036da1 100644
--- a/src/plugins/qmldesigner/designercore/include/removebasestateexception.h
+++ b/src/plugins/qmldesigner/designercore/include/removebasestateexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOVEBASESTATEEXCEPTION_H
-#define REMOVEBASESTATEEXCEPTION_H
+#pragma once
 
 #include <exception.h>
 
@@ -41,5 +40,3 @@ public:
 
 };
 } // namespace QmlDesigner
-
-#endif // REMOVEBASESTATEEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/rewriterview.h b/src/plugins/qmldesigner/designercore/include/rewriterview.h
index b82abef2a7..1bcc4ffccb 100644
--- a/src/plugins/qmldesigner/designercore/include/rewriterview.h
+++ b/src/plugins/qmldesigner/designercore/include/rewriterview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REWRITERVIEW_H
-#define REWRITERVIEW_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "abstractview.h"
@@ -215,5 +214,3 @@ private: //variables
 };
 
 } //QmlDesigner
-
-#endif // REWRITERVIEW_H
diff --git a/src/plugins/qmldesigner/designercore/include/rewritingexception.h b/src/plugins/qmldesigner/designercore/include/rewritingexception.h
index 067ecd1dc3..b732e9269e 100644
--- a/src/plugins/qmldesigner/designercore/include/rewritingexception.h
+++ b/src/plugins/qmldesigner/designercore/include/rewritingexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REWRITINGEXCEPTION_H
-#define REWRITINGEXCEPTION_H
+#pragma once
 
 #include "exception.h"
 
@@ -48,5 +47,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // REWRITINGEXCEPTION_H
diff --git a/src/plugins/qmldesigner/designercore/include/signalhandlerproperty.h b/src/plugins/qmldesigner/designercore/include/signalhandlerproperty.h
index 4e76c0fa6b..47763a37f2 100644
--- a/src/plugins/qmldesigner/designercore/include/signalhandlerproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/signalhandlerproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIGNALHANDLERPROPERTY_H
-#define SIGNALHANDLERPROPERTY_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "abstractproperty.h"
@@ -49,5 +48,3 @@ protected:
 };
 
 } // namespace QmlDesigner
-
-#endif // SIGNALHANDLERPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/subcomponentmanager.h b/src/plugins/qmldesigner/designercore/include/subcomponentmanager.h
index b965c02716..15e2c41d01 100644
--- a/src/plugins/qmldesigner/designercore/include/subcomponentmanager.h
+++ b/src/plugins/qmldesigner/designercore/include/subcomponentmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBCOMPONENTMANAGER_H
-#define SUBCOMPONENTMANAGER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -77,6 +76,3 @@ private: // variables
 };
 
 } // namespace QmlDesigner
-
-
-#endif // SUBCOMPONENTMANAGER_H
diff --git a/src/plugins/qmldesigner/designercore/include/textmodifier.h b/src/plugins/qmldesigner/designercore/include/textmodifier.h
index 6e93e7f07f..863ecabd9f 100644
--- a/src/plugins/qmldesigner/designercore/include/textmodifier.h
+++ b/src/plugins/qmldesigner/designercore/include/textmodifier.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTMODIFIER_H
-#define TEXTMODIFIER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -91,5 +90,3 @@ signals:
 };
 
 }
-
-#endif // TEXTMODIFIER_H
diff --git a/src/plugins/qmldesigner/designercore/include/variantproperty.h b/src/plugins/qmldesigner/designercore/include/variantproperty.h
index e05697e256..c909958de0 100644
--- a/src/plugins/qmldesigner/designercore/include/variantproperty.h
+++ b/src/plugins/qmldesigner/designercore/include/variantproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VARIANTPROPERTY_H
-#define VARIANTPROPERTY_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "abstractproperty.h"
@@ -67,5 +66,3 @@ QMLDESIGNERCORE_EXPORT QTextStream& operator<<(QTextStream &stream, const Varian
 QMLDESIGNERCORE_EXPORT QDebug operator<<(QDebug debug, const VariantProperty &VariantProperty);
 
 }
-
-#endif //VARIANTPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/include/viewmanager.h b/src/plugins/qmldesigner/designercore/include/viewmanager.h
index 7690ff98a1..f6a594f54b 100644
--- a/src/plugins/qmldesigner/designercore/include/viewmanager.h
+++ b/src/plugins/qmldesigner/designercore/include/viewmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_VIEWMANAGER_H
-#define QMLDESIGNER_VIEWMANAGER_H
+#pragma once
 
 #include "abstractview.h"
 
@@ -107,5 +106,3 @@ private: // variables
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_VIEWMANAGER_H
diff --git a/src/plugins/qmldesigner/designercore/instances/nodeinstanceserverproxy.h b/src/plugins/qmldesigner/designercore/instances/nodeinstanceserverproxy.h
index 56f7d18228..1b770749a8 100644
--- a/src/plugins/qmldesigner/designercore/instances/nodeinstanceserverproxy.h
+++ b/src/plugins/qmldesigner/designercore/instances/nodeinstanceserverproxy.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NODEINSTANCESERVERPROXY_H
-#define NODEINSTANCESERVERPROXY_H
+#pragma once
 
 #include "nodeinstanceserverinterface.h"
 
@@ -124,5 +123,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // NODEINSTANCESERVERPROXY_H
diff --git a/src/plugins/qmldesigner/designercore/instances/puppetbuildprogressdialog.h b/src/plugins/qmldesigner/designercore/instances/puppetbuildprogressdialog.h
index 2dc6919d3a..4952335f23 100644
--- a/src/plugins/qmldesigner/designercore/instances/puppetbuildprogressdialog.h
+++ b/src/plugins/qmldesigner/designercore/instances/puppetbuildprogressdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PUPPETBUILDPROGRESSDIALOG_H
-#define PUPPETBUILDPROGRESSDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -59,4 +58,3 @@ private:
 };
 
 }
-#endif // PUPPETBUILDPROGRESSDIALOG_H
diff --git a/src/plugins/qmldesigner/designercore/instances/puppetcreator.h b/src/plugins/qmldesigner/designercore/instances/puppetcreator.h
index eac79607d3..f39d210a3e 100644
--- a/src/plugins/qmldesigner/designercore/instances/puppetcreator.h
+++ b/src/plugins/qmldesigner/designercore/instances/puppetcreator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_PUPPETCREATOR_H
-#define QMLDESIGNER_PUPPETCREATOR_H
+#pragma once
 
 #include <QString>
 #include <QProcessEnvironment>
@@ -120,5 +119,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_PUPPETCREATOR_H
diff --git a/src/plugins/qmldesigner/designercore/instances/puppetdialog.h b/src/plugins/qmldesigner/designercore/instances/puppetdialog.h
index 91654fb125..c65094042c 100644
--- a/src/plugins/qmldesigner/designercore/instances/puppetdialog.h
+++ b/src/plugins/qmldesigner/designercore/instances/puppetdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PUPPETDIALOG_H
-#define PUPPETDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -56,5 +55,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // PUPPETDIALOG_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalbindingproperty.h b/src/plugins/qmldesigner/designercore/model/internalbindingproperty.h
index 56ab2c5bd8..5cb82205fa 100644
--- a/src/plugins/qmldesigner/designercore/model/internalbindingproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalbindingproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALBINDINGPROPERTY_H
-#define INTERNALBINDINGPROPERTY_H
+#pragma once
 
 #include "internalproperty.h"
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALBINDINGPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalnode_p.h b/src/plugins/qmldesigner/designercore/model/internalnode_p.h
index 2e9ff3dcdf..f34cf6c03e 100644
--- a/src/plugins/qmldesigner/designercore/model/internalnode_p.h
+++ b/src/plugins/qmldesigner/designercore/model/internalnode_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALNODE_H
-#define INTERNALNODE_H
+#pragma once
 
 #include <QMap>
 #include <QHash>
@@ -158,5 +157,3 @@ uint qHash(const InternalNodePointer& node);
 bool operator <(const InternalNodePointer &firstNode, const InternalNodePointer &secondNode);
 } // Internal
 } // QtQmlDesigner
-
-#endif // INTERNALNODE_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalnodeabstractproperty.h b/src/plugins/qmldesigner/designercore/model/internalnodeabstractproperty.h
index 0be05f5a22..0ea7d49eff 100644
--- a/src/plugins/qmldesigner/designercore/model/internalnodeabstractproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalnodeabstractproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALNODEABSTRACTPROPERTY_H
-#define INTERNALNODEABSTRACTPROPERTY_H
+#pragma once
 
 #include "internalproperty.h"
 
@@ -61,5 +60,3 @@ protected:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALNODEABSTRACTPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalnodelistproperty.h b/src/plugins/qmldesigner/designercore/model/internalnodelistproperty.h
index c769219944..d58e44d08c 100644
--- a/src/plugins/qmldesigner/designercore/model/internalnodelistproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalnodelistproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALNODELISTPROPERTY_H
-#define INTERNALNODELISTPROPERTY_H
+#pragma once
 
 #include "internalnodeabstractproperty.h"
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALNODELISTPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalnodeproperty.h b/src/plugins/qmldesigner/designercore/model/internalnodeproperty.h
index 9e37ad5d3a..7da520b011 100644
--- a/src/plugins/qmldesigner/designercore/model/internalnodeproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalnodeproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALNODEPROPERTY_H
-#define INTERNALNODEPROPERTY_H
+#pragma once
 
 #include "internalnodeabstractproperty.h"
 
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALNODEPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalproperty.h b/src/plugins/qmldesigner/designercore/model/internalproperty.h
index 9ad33f2b17..df6896bf9a 100644
--- a/src/plugins/qmldesigner/designercore/model/internalproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALPROPERTY_H
-#define INTERNALPROPERTY_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 
@@ -97,5 +96,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalsignalhandlerproperty.h b/src/plugins/qmldesigner/designercore/model/internalsignalhandlerproperty.h
index f3aa86a69f..c0875f7e5b 100644
--- a/src/plugins/qmldesigner/designercore/model/internalsignalhandlerproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalsignalhandlerproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALSIGNALHANDLERPROPERTY_H
-#define INTERNALSIGNALHANDLERPROPERTY_H
+#pragma once
 
 #include "internalproperty.h"
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALSIGNALHANDLERPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/internalvariantproperty.h b/src/plugins/qmldesigner/designercore/model/internalvariantproperty.h
index 40af21e5e9..6edfe7a492 100644
--- a/src/plugins/qmldesigner/designercore/model/internalvariantproperty.h
+++ b/src/plugins/qmldesigner/designercore/model/internalvariantproperty.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INTERNALVARIANTPROPERTY_H
-#define INTERNALVARIANTPROPERTY_H
+#pragma once
 
 #include "internalproperty.h"
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // INTERNALVARIANTPROPERTY_H
diff --git a/src/plugins/qmldesigner/designercore/model/model_p.h b/src/plugins/qmldesigner/designercore/model/model_p.h
index 17afc1cb97..a8f8eae963 100644
--- a/src/plugins/qmldesigner/designercore/model/model_p.h
+++ b/src/plugins/qmldesigner/designercore/model/model_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODEL_P_H
-#define MODEL_P_H
+#pragma once
 
 #include <QList>
 #include <QPointer>
@@ -254,4 +253,3 @@ private:
 
 }
 }
-#endif // MODEL_P_H
diff --git a/src/plugins/qmldesigner/designercore/model/modelnodepositionrecalculator.h b/src/plugins/qmldesigner/designercore/model/modelnodepositionrecalculator.h
index 9828132c4c..d71956df3e 100644
--- a/src/plugins/qmldesigner/designercore/model/modelnodepositionrecalculator.h
+++ b/src/plugins/qmldesigner/designercore/model/modelnodepositionrecalculator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELNODEPOSITIONRECALCULATOR_H
-#define MODELNODEPOSITIONRECALCULATOR_H
+#pragma once
 
 #include <QMap>
 #include <QObject>
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // MODELNODEPOSITIONRECALCULATOR_H
diff --git a/src/plugins/qmldesigner/designercore/model/modeltotextmerger.h b/src/plugins/qmldesigner/designercore/model/modeltotextmerger.h
index 89abfee724..7405fcbca0 100644
--- a/src/plugins/qmldesigner/designercore/model/modeltotextmerger.h
+++ b/src/plugins/qmldesigner/designercore/model/modeltotextmerger.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELTOTEXTMERGER_H
-#define MODELTOTEXTMERGER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include <modelnode.h>
@@ -96,5 +95,3 @@ private:
 
 } //Internal
 } //QmlDesigner
-
-#endif // MODELTOTEXTMERGER_H
diff --git a/src/plugins/qmldesigner/designercore/model/qmltextgenerator.h b/src/plugins/qmldesigner/designercore/model/qmltextgenerator.h
index af7deb65d7..5c2823573e 100644
--- a/src/plugins/qmldesigner/designercore/model/qmltextgenerator.h
+++ b/src/plugins/qmldesigner/designercore/model/qmltextgenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLTEXTGENERATOR_H
-#define QMLTEXTGENERATOR_H
+#pragma once
 
 #include <QString>
 
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // QMLTEXTGENERATOR_H
diff --git a/src/plugins/qmldesigner/designercore/model/rewriteaction.h b/src/plugins/qmldesigner/designercore/model/rewriteaction.h
index 58cc56b41e..63cb8db2e7 100644
--- a/src/plugins/qmldesigner/designercore/model/rewriteaction.h
+++ b/src/plugins/qmldesigner/designercore/model/rewriteaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REWRITEACTION_H
-#define REWRITEACTION_H
+#pragma once
 
 #include "abstractproperty.h"
 #include "modelnodepositionstorage.h"
@@ -301,5 +300,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // REWRITEACTION_H
diff --git a/src/plugins/qmldesigner/designercore/model/rewriteactioncompressor.h b/src/plugins/qmldesigner/designercore/model/rewriteactioncompressor.h
index 461238230c..2702ab0d60 100644
--- a/src/plugins/qmldesigner/designercore/model/rewriteactioncompressor.h
+++ b/src/plugins/qmldesigner/designercore/model/rewriteactioncompressor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REWRITEACTIONCOMPRESSOR_H
-#define REWRITEACTIONCOMPRESSOR_H
+#pragma once
 
 #include "rewriteaction.h"
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // REWRITEACTIONCOMPRESSOR_H
diff --git a/src/plugins/qmldesigner/designercore/model/texttomodelmerger.h b/src/plugins/qmldesigner/designercore/model/texttomodelmerger.h
index cd543879ed..45e225b109 100644
--- a/src/plugins/qmldesigner/designercore/model/texttomodelmerger.h
+++ b/src/plugins/qmldesigner/designercore/model/texttomodelmerger.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTTOMODELMERGER_H
-#define TEXTTOMODELMERGER_H
+#pragma once
 
 #include "qmldesignercorelib_global.h"
 #include "import.h"
@@ -308,5 +307,3 @@ public:
 
 } //Internal
 } //QmlDesigner
-
-#endif // TEXTTOMODELMERGER_H
diff --git a/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginmanager.h b/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginmanager.h
index 77108480a0..31d94a17c5 100644
--- a/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginmanager.h
+++ b/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WIDGETPLUGINMANAGER_H
-#define WIDGETPLUGINMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QList>
@@ -70,4 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-#endif // WIDGETPLUGINMANAGER_H
diff --git a/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginpath.h b/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginpath.h
index 5354ae7217..391fe86fe9 100644
--- a/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginpath.h
+++ b/src/plugins/qmldesigner/designercore/pluginmanager/widgetpluginpath.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WIDGETPLUGINPATH_H
-#define WIDGETPLUGINPATH_H
+#pragma once
 
 #include <QObject>
 #include <QPointer>
@@ -94,4 +93,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-#endif // WIDGETPLUGINPATH_H
diff --git a/src/plugins/qmldesigner/designercore/rewritertransaction.h b/src/plugins/qmldesigner/designercore/rewritertransaction.h
index b983273258..213b9e5618 100644
--- a/src/plugins/qmldesigner/designercore/rewritertransaction.h
+++ b/src/plugins/qmldesigner/designercore/rewritertransaction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REWRITERTRANSACTION_H
-#define REWRITERTRANSACTION_H
+#pragma once
 
 #include <qmldesignercorelib_global.h>
 
@@ -59,5 +58,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // REWRITERTRANSACTION_H
diff --git a/src/plugins/qmldesigner/designersettings.h b/src/plugins/qmldesigner/designersettings.h
index cc93e4be55..b5e0b2fd29 100644
--- a/src/plugins/qmldesigner/designersettings.h
+++ b/src/plugins/qmldesigner/designersettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNERSETTINGS_H
-#define DESIGNERSETTINGS_H
+#pragma once
 
 #include <QtGlobal>
 #include <QHash>
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // DESIGNERSETTINGS_H
diff --git a/src/plugins/qmldesigner/designmodecontext.h b/src/plugins/qmldesigner/designmodecontext.h
index da8d545b11..aa89c619f3 100644
--- a/src/plugins/qmldesigner/designmodecontext.h
+++ b/src/plugins/qmldesigner/designmodecontext.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNMODECONTEXT_H
-#define DESIGNMODECONTEXT_H
+#pragma once
 
 #include <coreplugin/icontext.h>
 
@@ -57,5 +56,3 @@ public:
 
 }
 }
-
-#endif // DESIGNMODECONTEXT_H
diff --git a/src/plugins/qmldesigner/designmodewidget.h b/src/plugins/qmldesigner/designmodewidget.h
index 41d9af758b..f1a68b3a9c 100644
--- a/src/plugins/qmldesigner/designmodewidget.h
+++ b/src/plugins/qmldesigner/designmodewidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESIGNMODEWIDGET_H
-#define DESIGNMODEWIDGET_H
+#pragma once
 
 #include <coreplugin/minisplitter.h>
 #include <utils/faketooltip.h>
@@ -158,5 +157,3 @@ private: // variables
 
 } // namespace Internal
 } // namespace Designer
-
-#endif // DESIGNMODEWIDGET_H
diff --git a/src/plugins/qmldesigner/documentmanager.h b/src/plugins/qmldesigner/documentmanager.h
index 21e9f5b62f..83d773d75f 100644
--- a/src/plugins/qmldesigner/documentmanager.h
+++ b/src/plugins/qmldesigner/documentmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_DOCUMENTMANAGER_H
-#define QMLDESIGNER_DOCUMENTMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QList>
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_DOCUMENTMANAGER_H
diff --git a/src/plugins/qmldesigner/qmldesignerconstants.h b/src/plugins/qmldesigner/qmldesignerconstants.h
index 0deb1dcaf9..e0e8081d1f 100644
--- a/src/plugins/qmldesigner/qmldesignerconstants.h
+++ b/src/plugins/qmldesigner/qmldesignerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNERCONSTANTS_H
-#define QMLDESIGNERCONSTANTS_H
+#pragma once
 
 namespace QmlDesigner {
 namespace Constants {
@@ -55,5 +54,3 @@ namespace Internal {
 
 } // Constants
 } // QmlDesigner
-
-#endif //QMLDESIGNERCONSTANTS_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/colortool/colortool.h b/src/plugins/qmldesigner/qmldesignerextension/colortool/colortool.h
index 889dfcb928..439971855e 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/colortool/colortool.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/colortool/colortool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLORTOOL_H
-#define COLORTOOL_H
+#pragma once
 
 #include "abstractcustomtool.h"
 #include "selectionindicator.h"
@@ -88,5 +87,3 @@ private:
 };
 
 }
-#endif // COLORTOOL_H
-
diff --git a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/bindingmodel.h b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/bindingmodel.h
index 9f1334c33c..51489a60d6 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/bindingmodel.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/bindingmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BINDINGMODEL_H
-#define BINDINGMODEL_H
+#pragma once
 
 #include <modelnode.h>
 #include <nodemetainfo.h>
@@ -118,5 +117,3 @@ public:
 } // namespace Internal
 
 } // namespace QmlDesigner
-
-#endif // BINDINGMODEL_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionmodel.h b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionmodel.h
index a4fb4b8a56..016ff66dd5 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionmodel.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONNECTIONMODEL_H
-#define CONNECTIONMODEL_H
+#pragma once
 
 #include <modelnode.h>
 #include <nodemetainfo.h>
@@ -119,5 +118,3 @@ public:
 } // namespace Internal
 
 } // namespace QmlDesigner
-
-#endif // CONNECTIONMODEL_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionview.h b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionview.h
index 2b6b1d1535..cb122baf0b 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionview.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONNECTIONVIEW_H
-#define CONNECTIONVIEW_H
+#pragma once
 
 #include <abstractview.h>
 #include <qmlitemnode.h>
@@ -92,5 +91,3 @@ private: //variables
 } // namespace Internal
 
 } // namespace QmlDesigner
-
-#endif //CONNECTIONVIEW_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionviewwidget.h b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionviewwidget.h
index 2fbb107e1c..fa5a88bbc4 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionviewwidget.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/connectionviewwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONNECTIONVIEWWIDGET_H
-#define CONNECTIONVIEWWIDGET_H
+#pragma once
 
 #include <QFrame>
 #include <QAbstractItemView>
@@ -99,5 +98,3 @@ private:
 } // namespace Internal
 
 } // namespace QmlDesigner
-
-#endif // CONNECTIONVIEWWIDGET_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/dynamicpropertiesmodel.h b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/dynamicpropertiesmodel.h
index 520985aafd..be0239b4f0 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/dynamicpropertiesmodel.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/connectioneditor/dynamicpropertiesmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DYNCAMICPROPERTIESMODEL_H
-#define DYNCAMICPROPERTIESMODEL_H
+#pragma once
 
 #include <modelnode.h>
 #include <nodemetainfo.h>
@@ -130,7 +129,4 @@ public:
 };
 
 } // namespace Internal
-
 } // namespace QmlDesigner
-
-#endif // DYNCAMICPROPERTIESMODEL_Hs
diff --git a/src/plugins/qmldesigner/qmldesignerextension/pathtool/controlpoint.h b/src/plugins/qmldesigner/qmldesignerextension/pathtool/controlpoint.h
index fea74bdb5b..39dc184978 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/pathtool/controlpoint.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/pathtool/controlpoint.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_CONTROLPOINT_H
-#define QMLDESIGNER_CONTROLPOINT_H
+#pragma once
 
 #include <modelnode.h>
 
@@ -92,5 +91,3 @@ bool operator ==(const ControlPoint& firstControlPoint, const ControlPoint& seco
 QDebug operator<<(QDebug debug, const ControlPoint &controlPoint);
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_CONTROLPOINT_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/pathtool/cubicsegment.h b/src/plugins/qmldesigner/qmldesignerextension/pathtool/cubicsegment.h
index 7b8d0e8cd1..260dcd2a6d 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/pathtool/cubicsegment.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/pathtool/cubicsegment.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_CUBICSEGMENT_H
-#define QMLDESIGNER_CUBICSEGMENT_H
+#pragma once
 
 #include "controlpoint.h"
 
@@ -126,5 +125,3 @@ bool operator ==(const CubicSegment& firstCubicSegment, const CubicSegment& seco
 QDebug operator<<(QDebug debug, const CubicSegment &cubicSegment);
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_CUBICSEGMENT_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathitem.h b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathitem.h
index f32a0162d7..d431262b39 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathitem.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PATHITEM_H
-#define PATHITEM_H
+#pragma once
 
 #include <QGraphicsObject>
 #include <QWeakPointer>
@@ -139,5 +138,3 @@ inline int PathItem::type() const
     return Type;
 }
 }
-
-#endif // PATHITEM_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathselectionmanipulator.h b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathselectionmanipulator.h
index 6be7adb9a5..def0148367 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathselectionmanipulator.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathselectionmanipulator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_PATHSELECTIONMANIPULATOR_H
-#define QMLDESIGNER_PATHSELECTIONMANIPULATOR_H
+#pragma once
 
 #include <QList>
 #include <QPair>
@@ -99,5 +98,3 @@ private:
 bool operator ==(const SelectionPoint& firstSelectionPoint, const SelectionPoint& secondSelectionPoint);
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_PATHSELECTIONMANIPULATOR_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtool.h b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtool.h
index 260425282f..281577fff0 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtool.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PATHTOOL_H
-#define PATHTOOL_H
+#pragma once
 
 #include "abstractcustomtool.h"
 #include "selectionindicator.h"
@@ -90,5 +89,3 @@ private:
 };
 
 }
-#endif // PATHTOOL_H
-
diff --git a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtoolview.h b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtoolview.h
index 860789cd68..46b688923e 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtoolview.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/pathtool/pathtoolview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_PATHTOOLVIEW_H
-#define QMLDESIGNER_PATHTOOLVIEW_H
+#pragma once
 
 #include <abstractview.h>
 
@@ -46,5 +45,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_PATHTOOLVIEW_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextension_global.h b/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextension_global.h
index 00d06e2b6a..82ed1b076c 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextension_global.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextension_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNEREXTENSION_GLOBAL_H
-#define QMLDESIGNEREXTENSION_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define QMLDESIGNEREXTENSIONSHARED_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLDESIGNEREXTENSION_GLOBAL_H
-
diff --git a/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextensionconstants.h b/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextensionconstants.h
index 4a32df0bc4..9bf41a2f54 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextensionconstants.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/qmldesignerextensionconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNEREXTENSIONCONSTANTS_H
-#define QMLDESIGNEREXTENSIONCONSTANTS_H
+#pragma once
 
 namespace QmlDesignerExtension {
 namespace Constants {
@@ -34,6 +33,3 @@ const char MENU_ID[] = "QmlDesignerExtension.Menu";
 
 } // namespace QmlDesignerExtension
 } // namespace Constants
-
-#endif // QMLDESIGNEREXTENSIONCONSTANTS_H
-
diff --git a/src/plugins/qmldesigner/qmldesignerextension/sourcetool/sourcetool.h b/src/plugins/qmldesigner/qmldesignerextension/sourcetool/sourcetool.h
index 7d6a463a57..0757776d81 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/sourcetool/sourcetool.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/sourcetool/sourcetool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SOURCETOOL_H
-#define SOURCETOOL_H
+#pragma once
 
 #include <abstractcustomtool.h>
 #include "selectionindicator.h"
@@ -89,4 +88,3 @@ private:
 };
 
 }
-#endif // SOURCETOOL_H
diff --git a/src/plugins/qmldesigner/qmldesignerextension/texttool/texttool.h b/src/plugins/qmldesigner/qmldesignerextension/texttool/texttool.h
index abbfb4444b..ba13cdbcce 100644
--- a/src/plugins/qmldesigner/qmldesignerextension/texttool/texttool.h
+++ b/src/plugins/qmldesigner/qmldesignerextension/texttool/texttool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTTOOL_H
-#define TEXTTOOL_H
+#pragma once
 
 #include "abstractcustomtool.h"
 #include "selectionindicator.h"
@@ -86,5 +85,3 @@ private:
 };
 
 }
-#endif // TEXTTOOL_H
-
diff --git a/src/plugins/qmldesigner/qmldesignericons.h b/src/plugins/qmldesigner/qmldesignericons.h
index 3fb9732c68..ab10dda7e3 100644
--- a/src/plugins/qmldesigner/qmldesignericons.h
+++ b/src/plugins/qmldesigner/qmldesignericons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNERICONS_H
-#define QMLDESIGNERICONS_H
+#pragma once
 
 #include <utils/icon.h>
 
@@ -60,5 +59,3 @@ const Utils::Icon RESET({
 
 } // Icons
 } // QmlDesigner
-
-#endif // QMLDESIGNERICONS_H
diff --git a/src/plugins/qmldesigner/qmldesignerplugin.h b/src/plugins/qmldesigner/qmldesignerplugin.h
index 9717d50203..2190a59642 100644
--- a/src/plugins/qmldesigner/qmldesignerplugin.h
+++ b/src/plugins/qmldesigner/qmldesignerplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNERPLUGIN_H
-#define QMLDESIGNERPLUGIN_H
+#pragma once
 
 #include <qmldesigner/designersettings.h>
 #include <qmldesigner/components/pluginmanager/pluginmanager.h>
@@ -113,5 +112,3 @@ private: // variables
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNERPLUGIN_H
diff --git a/src/plugins/qmldesigner/qtquickplugin/qtquickplugin.h b/src/plugins/qmldesigner/qtquickplugin/qtquickplugin.h
index 10ed2066f6..08dc48a450 100644
--- a/src/plugins/qmldesigner/qtquickplugin/qtquickplugin.h
+++ b/src/plugins/qmldesigner/qtquickplugin/qtquickplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTQUICKPLUGIN_H
-#define QTQUICKPLUGIN_H
+#pragma once
 
 #include <iwidgetplugin.h>
 
@@ -51,6 +50,3 @@ public:
 };
 
 } // namespace QmlDesigner
-
-
-#endif // QTQUICKPLUGIN_H
diff --git a/src/plugins/qmldesigner/settingspage.h b/src/plugins/qmldesigner/settingspage.h
index bcf8c130ab..c33a63b827 100644
--- a/src/plugins/qmldesigner/settingspage.h
+++ b/src/plugins/qmldesigner/settingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSPAGE_H
-#define SETTINGSPAGE_H
+#pragma once
 
 #include "ui_settingspage.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // SETTINGSPAGE_H
diff --git a/src/plugins/qmldesigner/shortcutmanager.h b/src/plugins/qmldesigner/shortcutmanager.h
index fcd723b6ba..226babb987 100644
--- a/src/plugins/qmldesigner/shortcutmanager.h
+++ b/src/plugins/qmldesigner/shortcutmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDESIGNER_SHORTCUTMANAGER_H
-#define QMLDESIGNER_SHORTCUTMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QAction>
@@ -95,5 +94,3 @@ private:
 };
 
 } // namespace QmlDesigner
-
-#endif // QMLDESIGNER_SHORTCUTMANAGER_H
diff --git a/src/plugins/qmldesigner/styledoutputpaneplaceholder.h b/src/plugins/qmldesigner/styledoutputpaneplaceholder.h
index 147b7192be..a8e335c2f1 100644
--- a/src/plugins/qmldesigner/styledoutputpaneplaceholder.h
+++ b/src/plugins/qmldesigner/styledoutputpaneplaceholder.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STYLEDOUTPUTPANEPLACEHOLDER_H
-#define STYLEDOUTPUTPANEPLACEHOLDER_H
+#pragma once
 
 #include <coreplugin/outputpane.h>
 
@@ -45,5 +44,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // STYLEDOUTPUTPANEPLACEHOLDER_H
diff --git a/src/plugins/qmljseditor/qmlexpressionundercursor.h b/src/plugins/qmljseditor/qmlexpressionundercursor.h
index 5694716f17..7aab34ecdf 100644
--- a/src/plugins/qmljseditor/qmlexpressionundercursor.h
+++ b/src/plugins/qmljseditor/qmlexpressionundercursor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLEXPRESSIONUNDERCURSOR_H
-#define QMLEXPRESSIONUNDERCURSOR_H
+#pragma once
 
 #include <qmljs/parser/qmljsastfwd_p.h>
 #include <qmljs/qmljsdocument.h>
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLEXPRESSIONUNDERCURSOR_H
diff --git a/src/plugins/qmljseditor/qmljsautocompleter.h b/src/plugins/qmljseditor/qmljsautocompleter.h
index 3d23964d1b..701134dbd6 100644
--- a/src/plugins/qmljseditor/qmljsautocompleter.h
+++ b/src/plugins/qmljseditor/qmljsautocompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSAUTOCOMPLETER_H
-#define QMLJSAUTOCOMPLETER_H
+#pragma once
 
 #include <texteditor/autocompleter.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLJSAUTOCOMPLETER_H
diff --git a/src/plugins/qmljseditor/qmljscompletionassist.h b/src/plugins/qmljseditor/qmljscompletionassist.h
index 62df082d7f..42dc8d4dd5 100644
--- a/src/plugins/qmljseditor/qmljscompletionassist.h
+++ b/src/plugins/qmljseditor/qmljscompletionassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCOMPLETIONASSIST_H
-#define QMLJSCOMPLETIONASSIST_H
+#pragma once
 
 #include "qmljseditor.h"
 
@@ -136,5 +135,3 @@ private:
 };
 
 } // QmlJSEditor
-
-#endif // QMLJSCOMPLETIONASSIST_H
diff --git a/src/plugins/qmljseditor/qmljscomponentfromobjectdef.h b/src/plugins/qmljseditor/qmljscomponentfromobjectdef.h
index c118de3a7e..f8734612e6 100644
--- a/src/plugins/qmljseditor/qmljscomponentfromobjectdef.h
+++ b/src/plugins/qmljseditor/qmljscomponentfromobjectdef.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCOMPONENTFROMOBJECTDEF_H
-#define QMLJSCOMPONENTFROMOBJECTDEF_H
+#pragma once
 
 #include "qmljsquickfix.h"
 
@@ -39,5 +38,3 @@ public:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSCOMPONENTFROMOBJECTDEF_H
diff --git a/src/plugins/qmljseditor/qmljscomponentnamedialog.h b/src/plugins/qmljseditor/qmljscomponentnamedialog.h
index 0a52f06a38..b7c5a7335f 100644
--- a/src/plugins/qmljseditor/qmljscomponentnamedialog.h
+++ b/src/plugins/qmljseditor/qmljscomponentnamedialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCOMPONENTNAMEDIALOG_H
-#define QMLJSCOMPONENTNAMEDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSCOMPONENTNAMEDIALOG_H
diff --git a/src/plugins/qmljseditor/qmljseditor.h b/src/plugins/qmljseditor/qmljseditor.h
index 1b7bd68bef..79d86dbb5a 100644
--- a/src/plugins/qmljseditor/qmljseditor.h
+++ b/src/plugins/qmljseditor/qmljseditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEDITOR_H
-#define QMLJSEDITOR_H
+#pragma once
 
 #include "qmljseditor_global.h"
 
@@ -157,5 +156,3 @@ public:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSEDITOR_H
diff --git a/src/plugins/qmljseditor/qmljseditor_global.h b/src/plugins/qmljseditor/qmljseditor_global.h
index 0bb8f65d94..bd4a5139dc 100644
--- a/src/plugins/qmljseditor/qmljseditor_global.h
+++ b/src/plugins/qmljseditor/qmljseditor_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEDITOR_GLOBAL_H
-#define QMLJSEDITOR_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,5 +32,3 @@
 #else
 #  define QMLJSEDITOR_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLJSEDITOR_GLOBAL_H
diff --git a/src/plugins/qmljseditor/qmljseditorconstants.h b/src/plugins/qmljseditor/qmljseditorconstants.h
index f7fb506df6..3f22b6e1ef 100644
--- a/src/plugins/qmljseditor/qmljseditorconstants.h
+++ b/src/plugins/qmljseditor/qmljseditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEDITOR_CONSTANTS_H
-#define QMLJSEDITOR_CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -60,5 +59,3 @@ const char QML_UI_FILE_WARNING[] = "QmlJSEditor.QmlUiFileWarning";
 
 } // namespace Constants
 } // namespace QmlJSEditor
-
-#endif // QMLJSEDITOR_CONSTANTS_H
diff --git a/src/plugins/qmljseditor/qmljseditordocument.h b/src/plugins/qmljseditor/qmljseditordocument.h
index 8e22b6e402..05d9e09457 100644
--- a/src/plugins/qmljseditor/qmljseditordocument.h
+++ b/src/plugins/qmljseditor/qmljseditordocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEDITORDOCUMENT_H
-#define QMLJSEDITORDOCUMENT_H
+#pragma once
 
 #include "qmljseditor_global.h"
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // QmlJSEditor
-
-#endif // QMLJSEDITORDOCUMENT_H
diff --git a/src/plugins/qmljseditor/qmljseditordocument_p.h b/src/plugins/qmljseditor/qmljseditordocument_p.h
index f6185fcc29..46a6a36c65 100644
--- a/src/plugins/qmljseditor/qmljseditordocument_p.h
+++ b/src/plugins/qmljseditor/qmljseditordocument_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEDITORDOCUMENT_P_H
-#define QMLJSEDITORDOCUMENT_P_H
+#pragma once
 
 #include <qmljs/qmljsdocument.h>
 #include <qmljstools/qmljssemanticinfo.h>
@@ -77,5 +76,3 @@ public:
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLJSEDITORDOCUMENT_P_H
diff --git a/src/plugins/qmljseditor/qmljseditorplugin.h b/src/plugins/qmljseditor/qmljseditorplugin.h
index 3629f9bb21..e96e59163b 100644
--- a/src/plugins/qmljseditor/qmljseditorplugin.h
+++ b/src/plugins/qmljseditor/qmljseditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSEDITORPLUGIN_H
-#define QMLJSEDITORPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <coreplugin/icontext.h>
@@ -103,5 +102,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSEDITORPLUGIN_H
diff --git a/src/plugins/qmljseditor/qmljsfindreferences.h b/src/plugins/qmljseditor/qmljsfindreferences.h
index 4fddc56bef..2d8cb9aaeb 100644
--- a/src/plugins/qmljseditor/qmljsfindreferences.h
+++ b/src/plugins/qmljseditor/qmljsfindreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSFINDREFERENCES_H
-#define QMLJSFINDREFERENCES_H
+#pragma once
 
 #include "qmljseditor_global.h"
 
@@ -92,5 +91,3 @@ private:
 };
 
 } // namespace QmlJSEditor
-
-#endif // QMLJSFINDREFERENCES_H
diff --git a/src/plugins/qmljseditor/qmljshighlighter.h b/src/plugins/qmljseditor/qmljshighlighter.h
index fd17751289..1b221aa181 100644
--- a/src/plugins/qmljseditor/qmljshighlighter.h
+++ b/src/plugins/qmljseditor/qmljshighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSHIGHLIGHTER_H
-#define QMLJSHIGHLIGHTER_H
+#pragma once
 
 #include "qmljseditor_global.h"
 
@@ -82,5 +81,3 @@ private:
 };
 
 } // namespace QmlJSEditor
-
-#endif // QMLJSHIGHLIGHTER_H
diff --git a/src/plugins/qmljseditor/qmljshoverhandler.h b/src/plugins/qmljseditor/qmljshoverhandler.h
index 4e54ecfde9..bf82bcd30b 100644
--- a/src/plugins/qmljseditor/qmljshoverhandler.h
+++ b/src/plugins/qmljseditor/qmljshoverhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSHOVERHANDLER_H
-#define QMLJSHOVERHANDLER_H
+#pragma once
 
 #include <qmljs/qmljsmodelmanagerinterface.h>
 #include <texteditor/basehoverhandler.h>
@@ -86,5 +85,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSHOVERHANDLER_H
diff --git a/src/plugins/qmljseditor/qmljsoutline.h b/src/plugins/qmljseditor/qmljsoutline.h
index b0d5bdf185..fc475ed689 100644
--- a/src/plugins/qmljseditor/qmljsoutline.h
+++ b/src/plugins/qmljseditor/qmljsoutline.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSOUTLINE_H
-#define QMLJSOUTLINE_H
+#pragma once
 
 #include "qmljseditor.h"
 
@@ -104,5 +103,3 @@ public:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSOUTLINE_H
diff --git a/src/plugins/qmljseditor/qmljsoutlinetreeview.h b/src/plugins/qmljseditor/qmljsoutlinetreeview.h
index 22a2878b12..7b651f4c24 100644
--- a/src/plugins/qmljseditor/qmljsoutlinetreeview.h
+++ b/src/plugins/qmljseditor/qmljsoutlinetreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSOUTLINETREEVIEW_H
-#define QMLJSOUTLINETREEVIEW_H
+#pragma once
 
 #include <utils/navigationtreeview.h>
 
@@ -45,5 +44,3 @@ private slots:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSOUTLINETREEVIEW_H
diff --git a/src/plugins/qmljseditor/qmljspreviewrunner.h b/src/plugins/qmljseditor/qmljspreviewrunner.h
index 3885e9140c..631311cb96 100644
--- a/src/plugins/qmljseditor/qmljspreviewrunner.h
+++ b/src/plugins/qmljseditor/qmljspreviewrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSPREVIEWRUNNER_H
-#define QMLJSPREVIEWRUNNER_H
+#pragma once
 
 #include <QObject>
 
@@ -51,6 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-
-#endif // QMLJSPREVIEWRUNNER_H
diff --git a/src/plugins/qmljseditor/qmljsquickfix.h b/src/plugins/qmljseditor/qmljsquickfix.h
index 5347d3e940..fda4a25a48 100644
--- a/src/plugins/qmljseditor/qmljsquickfix.h
+++ b/src/plugins/qmljseditor/qmljsquickfix.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSQUICKFIX_H
-#define QMLJSQUICKFIX_H
+#pragma once
 
 #include "qmljseditor.h"
 
@@ -94,5 +93,3 @@ protected:
 };
 
 } // namespace QmlJSEditor
-
-#endif // QMLJSQUICKFIX_H
diff --git a/src/plugins/qmljseditor/qmljsquickfixassist.h b/src/plugins/qmljseditor/qmljsquickfixassist.h
index 81784c5a74..c606737c55 100644
--- a/src/plugins/qmljseditor/qmljsquickfixassist.h
+++ b/src/plugins/qmljseditor/qmljsquickfixassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSQUICKFIXASSIST_H
-#define QMLJSQUICKFIXASSIST_H
+#pragma once
 
 #include "qmljseditor.h"
 
@@ -68,5 +67,3 @@ public:
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLJSQUICKFIXASSIST_H
diff --git a/src/plugins/qmljseditor/qmljsreuse.h b/src/plugins/qmljseditor/qmljsreuse.h
index 3a51f155ce..5c370f8610 100644
--- a/src/plugins/qmljseditor/qmljsreuse.h
+++ b/src/plugins/qmljseditor/qmljsreuse.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSREUSE_H
-#define QMLJSREUSE_H
+#pragma once
 
 #include <QtGlobal>
 #include <QIcon>
@@ -46,5 +45,3 @@ QIcon iconForColor(const QColor &color);
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLJSREUSE_H
diff --git a/src/plugins/qmljseditor/qmljssemantichighlighter.h b/src/plugins/qmljseditor/qmljssemantichighlighter.h
index 2acbc6f9a9..7491e71eed 100644
--- a/src/plugins/qmljseditor/qmljssemantichighlighter.h
+++ b/src/plugins/qmljseditor/qmljssemantichighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSSEMANTICHIGHLIGHTER_H
-#define QMLJSSEMANTICHIGHLIGHTER_H
+#pragma once
 
 #include <texteditor/semantichighlighter.h>
 #include <QFutureWatcher>
@@ -98,5 +97,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSSEMANTICHIGHLIGHTER_H
diff --git a/src/plugins/qmljseditor/qmljssemanticinfoupdater.h b/src/plugins/qmljseditor/qmljssemanticinfoupdater.h
index 4050145a7b..3d7696f466 100644
--- a/src/plugins/qmljseditor/qmljssemanticinfoupdater.h
+++ b/src/plugins/qmljseditor/qmljssemanticinfoupdater.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SEMANTICINFOUPDATER_H
-#define SEMANTICINFOUPDATER_H
+#pragma once
 
 #include "qmljseditor.h"
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // SEMANTICINFOUPDATER_H
diff --git a/src/plugins/qmljseditor/qmljssnippetprovider.h b/src/plugins/qmljseditor/qmljssnippetprovider.h
index e33c41c0a2..0d0761b928 100644
--- a/src/plugins/qmljseditor/qmljssnippetprovider.h
+++ b/src/plugins/qmljseditor/qmljssnippetprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSSNIPPETPROVIDER_H
-#define QMLJSSNIPPETPROVIDER_H
+#pragma once
 
 #include <texteditor/snippets/isnippetprovider.h>
 
@@ -45,5 +44,3 @@ public:
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLJSSNIPPETPROVIDER_H
diff --git a/src/plugins/qmljseditor/qmljswrapinloader.h b/src/plugins/qmljseditor/qmljswrapinloader.h
index 0cf629e03b..1e792b98fb 100644
--- a/src/plugins/qmljseditor/qmljswrapinloader.h
+++ b/src/plugins/qmljseditor/qmljswrapinloader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSWRAPINLOADER_H
-#define QMLJSWRAPINLOADER_H
+#pragma once
 
 #include "qmljsquickfix.h"
 
@@ -38,5 +37,3 @@ class WrapInLoader: public QmlJSQuickFixFactory
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLJSWRAPINLOADER_H
diff --git a/src/plugins/qmljseditor/qmloutlinemodel.h b/src/plugins/qmljseditor/qmloutlinemodel.h
index 8c679e6c52..86094c656a 100644
--- a/src/plugins/qmljseditor/qmloutlinemodel.h
+++ b/src/plugins/qmljseditor/qmloutlinemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLOUTLINEMODEL_H
-#define QMLOUTLINEMODEL_H
+#pragma once
 
 #include "qmljseditordocument.h"
 #include <utils/changeset.h>
@@ -165,5 +164,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSEditor
-
-#endif // QMLOUTLINEMODEL_H
diff --git a/src/plugins/qmljseditor/qmltaskmanager.h b/src/plugins/qmljseditor/qmltaskmanager.h
index 5d6674c0bd..9c56e7a93b 100644
--- a/src/plugins/qmljseditor/qmltaskmanager.h
+++ b/src/plugins/qmljseditor/qmltaskmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLTASKMANAGER_H
-#define QMLTASKMANAGER_H
+#pragma once
 
 #include <projectexplorer/task.h>
 #include <qmljs/qmljsdocument.h>
@@ -85,5 +84,3 @@ private:
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLTASKMANAGER_H
diff --git a/src/plugins/qmljseditor/quicktoolbar.h b/src/plugins/qmljseditor/quicktoolbar.h
index 2a7623bac8..df7a5e6514 100644
--- a/src/plugins/qmljseditor/quicktoolbar.h
+++ b/src/plugins/qmljseditor/quicktoolbar.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QUICKTOOLBAR_H
-#define QUICKTOOLBAR_H
+#pragma once
 
 #include <qmljs/qmljsicontextpane.h>
 
@@ -70,5 +69,3 @@ private:
 };
 
 } //QmlDesigner
-
-#endif // QUICKTOOLBAR_H
diff --git a/src/plugins/qmljseditor/quicktoolbarsettingspage.h b/src/plugins/qmljseditor/quicktoolbarsettingspage.h
index 13b434e384..db0c5ee99b 100644
--- a/src/plugins/qmljseditor/quicktoolbarsettingspage.h
+++ b/src/plugins/qmljseditor/quicktoolbarsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QUICKTOOLBARSETTINGSPAGE_H
-#define QUICKTOOLBARSETTINGSPAGE_H
+#pragma once
 
 #include "ui_quicktoolbarsettingspage.h"
 #include <coreplugin/dialogs/ioptionspage.h>
@@ -96,5 +95,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlDesigner
-
-#endif // QUICKTOOLBARSETTINGSPAGE_H
diff --git a/src/plugins/qmljstools/qmljsbundleprovider.h b/src/plugins/qmljstools/qmljsbundleprovider.h
index c7303a8893..d3b01bbb22 100644
--- a/src/plugins/qmljstools/qmljsbundleprovider.h
+++ b/src/plugins/qmljstools/qmljsbundleprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSBUNDLEPROVIDER_H
-#define QMLJSBUNDLEPROVIDER_H
+#pragma once
 
 #include <QObject>
 #include <QHash>
@@ -75,5 +74,3 @@ public:
 };
 
 } // end QmlJSTools namespace
-
-#endif // QMLJSBUNDLEPROVIDER_H
diff --git a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
index f30d832da8..e88ea1ef49 100644
--- a/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
+++ b/src/plugins/qmljstools/qmljscodestylepreferencesfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCODESTYLEPREFERENCESFACTORY_H
-#define QMLJSCODESTYLEPREFERENCESFACTORY_H
+#pragma once
 
 #include <texteditor/icodestylepreferencesfactory.h>
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace QmlJSTools
-
-#endif // QMLJSCODESTYLEPREFERENCESFACTORY_H
diff --git a/src/plugins/qmljstools/qmljscodestylesettingspage.h b/src/plugins/qmljstools/qmljscodestylesettingspage.h
index 0ed0e3b81a..cae3a9c2b4 100644
--- a/src/plugins/qmljstools/qmljscodestylesettingspage.h
+++ b/src/plugins/qmljstools/qmljscodestylesettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSCODESTYLESETTINGSPAGE_H
-#define QMLJSCODESTYLESETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <QWidget>
@@ -86,5 +85,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // QMLJSCODESTYLESETTINGSPAGE_H
diff --git a/src/plugins/qmljstools/qmljsfunctionfilter.h b/src/plugins/qmljstools/qmljsfunctionfilter.h
index 39041359fd..503343ea4a 100644
--- a/src/plugins/qmljstools/qmljsfunctionfilter.h
+++ b/src/plugins/qmljstools/qmljsfunctionfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSFUNCTIONFILTER_H
-#define QMLJSFUNCTIONFILTER_H
+#pragma once
 
 #include <coreplugin/locator/ilocatorfilter.h>
 
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSTools
-
-#endif // QMLJSFUNCTIONFILTER_H
diff --git a/src/plugins/qmljstools/qmljsindenter.h b/src/plugins/qmljstools/qmljsindenter.h
index 3a7ced9fd0..fb3f30c74f 100644
--- a/src/plugins/qmljstools/qmljsindenter.h
+++ b/src/plugins/qmljstools/qmljsindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSINDENTER_H
-#define QMLJSINDENTER_H
+#pragma once
 
 #include "qmljstools_global.h"
 
@@ -51,5 +50,3 @@ public:
 
 } // Internal
 } // QmlJSEditor
-
-#endif // QMLJSINDENTER_H
diff --git a/src/plugins/qmljstools/qmljsinterpreter.h b/src/plugins/qmljstools/qmljsinterpreter.h
index 2bfccb46ae..b3d1f8c717 100644
--- a/src/plugins/qmljstools/qmljsinterpreter.h
+++ b/src/plugins/qmljstools/qmljsinterpreter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSINTERPRETER_H
-#define QMLJSINTERPRETER_H
+#pragma once
 
 #include <qmljs/parser/qmljslexer_p.h>
 #include <qmljs/parser/qmljsengine_p.h>
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSTools
-
-#endif // QMLJSINTERPRETER_H
diff --git a/src/plugins/qmljstools/qmljslocatordata.h b/src/plugins/qmljstools/qmljslocatordata.h
index b24e4536e3..39b728d6f1 100644
--- a/src/plugins/qmljstools/qmljslocatordata.h
+++ b/src/plugins/qmljstools/qmljslocatordata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSLOCATORDATA_H
-#define QMLJSLOCATORDATA_H
+#pragma once
 
 #include <qmljs/qmljsdocument.h>
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlJSTools
-
-#endif // QMLJSLOCATORDATA_H
diff --git a/src/plugins/qmljstools/qmljsmodelmanager.h b/src/plugins/qmljstools/qmljsmodelmanager.h
index 40da3f0c5f..6a0e630c1b 100644
--- a/src/plugins/qmljstools/qmljsmodelmanager.h
+++ b/src/plugins/qmljstools/qmljsmodelmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSMODELMANAGER_H
-#define QMLJSMODELMANAGER_H
+#pragma once
 
 #include "qmljstools_global.h"
 
@@ -68,5 +67,3 @@ private:
 QMLJSTOOLS_EXPORT void setupProjectInfoQmlBundles(QmlJS::ModelManagerInterface::ProjectInfo &projectInfo);
 
 } // namespace QmlJSTools
-
-#endif // QMLJSMODELMANAGER_H
diff --git a/src/plugins/qmljstools/qmljsqtstylecodeformatter.h b/src/plugins/qmljstools/qmljsqtstylecodeformatter.h
index 6f4c79a1a9..905c15bbe8 100644
--- a/src/plugins/qmljstools/qmljsqtstylecodeformatter.h
+++ b/src/plugins/qmljstools/qmljsqtstylecodeformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSQTSTYLECODEFORMATTER_H
-#define QMLJSQTSTYLECODEFORMATTER_H
+#pragma once
 
 #include "qmljstools_global.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace QmlJSTools
-
-#endif // QMLJSQTSTYLECODEFORMATTER_H
diff --git a/src/plugins/qmljstools/qmljsrefactoringchanges.h b/src/plugins/qmljstools/qmljsrefactoringchanges.h
index 330da42b5c..cce8e2d08f 100644
--- a/src/plugins/qmljstools/qmljsrefactoringchanges.h
+++ b/src/plugins/qmljstools/qmljsrefactoringchanges.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSREFACTORINGCHANGES_H
-#define QMLJSREFACTORINGCHANGES_H
+#pragma once
 
 #include "qmljstools_global.h"
 
@@ -86,5 +85,3 @@ private:
 };
 
 } // namespace QmlJSTools
-
-#endif // QMLJSREFACTORINGCHANGES_H
diff --git a/src/plugins/qmljstools/qmljssemanticinfo.h b/src/plugins/qmljstools/qmljssemanticinfo.h
index 72f1b3fda4..3ba52b4b7c 100644
--- a/src/plugins/qmljstools/qmljssemanticinfo.h
+++ b/src/plugins/qmljstools/qmljssemanticinfo.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSSEMANTICINFO_H
-#define QMLJSSEMANTICINFO_H
+#pragma once
 
 #include "qmljstools_global.h"
 
@@ -101,5 +100,3 @@ private:
 } // namespace QmlJSTools
 
 Q_DECLARE_METATYPE(QmlJSTools::SemanticInfo)
-
-#endif // QMLJSSEMANTICINFO_H
diff --git a/src/plugins/qmljstools/qmljstools_global.h b/src/plugins/qmljstools/qmljstools_global.h
index b87409a5ff..4ea360e5fe 100644
--- a/src/plugins/qmljstools/qmljstools_global.h
+++ b/src/plugins/qmljstools/qmljstools_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSTOOLS_GLOBAL_H
-#define QMLJSTOOLS_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -35,5 +34,3 @@
 #else
 #  define QMLJSTOOLS_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLJSTOOLS_GLOBAL_H
diff --git a/src/plugins/qmljstools/qmljstoolsconstants.h b/src/plugins/qmljstools/qmljstoolsconstants.h
index eecdcd075b..777321e81a 100644
--- a/src/plugins/qmljstools/qmljstoolsconstants.h
+++ b/src/plugins/qmljstools/qmljstoolsconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSTOOLS_CONSTANTS_H
-#define QMLJSTOOLS_CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -52,5 +51,3 @@ const char SETTINGS_CATEGORY_QML_ICON[] = ":/qmljstools/images/category_qml.png"
 
 } // namespace Constants
 } // namespace QmlJSTools
-
-#endif // QMLJSTOOLS_CONSTANTS_H
diff --git a/src/plugins/qmljstools/qmljstoolsplugin.h b/src/plugins/qmljstools/qmljstoolsplugin.h
index 6e48c9332d..02faedb505 100644
--- a/src/plugins/qmljstools/qmljstoolsplugin.h
+++ b/src/plugins/qmljstools/qmljstoolsplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSTOOLS_H
-#define QMLJSTOOLS_H
+#pragma once
 
 #include <coreplugin/id.h>
 #include <extensionsystem/iplugin.h>
@@ -77,5 +76,3 @@ private:
 
 } // namespace Internal
 } // namespace CppTools
-
-#endif // QMLJSTOOLS_H
diff --git a/src/plugins/qmljstools/qmljstoolssettings.h b/src/plugins/qmljstools/qmljstoolssettings.h
index e103dcaa4a..4af12eb909 100644
--- a/src/plugins/qmljstools/qmljstoolssettings.h
+++ b/src/plugins/qmljstools/qmljstoolssettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSTOOLSSETTINGS_H
-#define QMLJSTOOLSSETTINGS_H
+#pragma once
 
 #include "qmljstools_global.h"
 
@@ -49,5 +48,3 @@ public:
 };
 
 } // namespace QmlJSTools
-
-#endif // QMLJSTOOLSSETTINGS_H
diff --git a/src/plugins/qmlprofiler/localqmlprofilerrunner.h b/src/plugins/qmlprofiler/localqmlprofilerrunner.h
index e156e21812..c634cc62bf 100644
--- a/src/plugins/qmlprofiler/localqmlprofilerrunner.h
+++ b/src/plugins/qmlprofiler/localqmlprofilerrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LOCALQMLPROFILERRUNNER_H
-#define LOCALQMLPROFILERRUNNER_H
+#pragma once
 
 #include "qmlprofiler_global.h"
 #include <utils/environment.h>
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace QmlProfiler
-
-#endif // LOCALQMLPROFILERRUNNER_H
diff --git a/src/plugins/qmlprofiler/qmlprofiler_global.h b/src/plugins/qmlprofiler/qmlprofiler_global.h
index b5621fb19d..2da08c0567 100644
--- a/src/plugins/qmlprofiler/qmlprofiler_global.h
+++ b/src/plugins/qmlprofiler/qmlprofiler_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILER_GLOBAL_H
-#define QMLPROFILER_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define QMLPROFILER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLPROFILER_GLOBAL_H
-
diff --git a/src/plugins/qmlprofiler/qmlprofileranimationsmodel.h b/src/plugins/qmlprofiler/qmlprofileranimationsmodel.h
index c07d545692..ba0b0f7ece 100644
--- a/src/plugins/qmlprofiler/qmlprofileranimationsmodel.h
+++ b/src/plugins/qmlprofiler/qmlprofileranimationsmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERANIMATIONSMODEL_H
-#define QMLPROFILERANIMATIONSMODEL_H
+#pragma once
 
 #include <QObject>
 #include "qmlprofilertimelinemodel.h"
@@ -83,5 +82,3 @@ private:
 
 }
 }
-
-#endif // QMLPROFILERANIMATIONSMODEL_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerattachdialog.h b/src/plugins/qmlprofiler/qmlprofilerattachdialog.h
index 850c029326..c1167d39aa 100644
--- a/src/plugins/qmlprofiler/qmlprofilerattachdialog.h
+++ b/src/plugins/qmlprofiler/qmlprofilerattachdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERATTACHDIALOG_H
-#define QMLPROFILERATTACHDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERATTACHDIALOG_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerbindingloopsrenderpass.h b/src/plugins/qmlprofiler/qmlprofilerbindingloopsrenderpass.h
index b547c8ed69..6cf3486aa3 100644
--- a/src/plugins/qmlprofiler/qmlprofilerbindingloopsrenderpass.h
+++ b/src/plugins/qmlprofiler/qmlprofilerbindingloopsrenderpass.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERBINDINGLOOPSRENDERPASS_H
-#define QMLPROFILERBINDINGLOOPSRENDERPASS_H
+#pragma once
 
 #include "timeline/timelineabstractrenderer.h"
 #include "timeline/timelinerenderpass.h"
@@ -49,6 +48,3 @@ protected:
 
 }
 }
-
-#endif // QMLPROFILERBINDINGLOOPSRENDERPASS_H
-
diff --git a/src/plugins/qmlprofiler/qmlprofilerclientmanager.h b/src/plugins/qmlprofiler/qmlprofilerclientmanager.h
index 349e1d57ae..d6536eb4b4 100644
--- a/src/plugins/qmlprofiler/qmlprofilerclientmanager.h
+++ b/src/plugins/qmlprofiler/qmlprofilerclientmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERCLIENTMANAGER_H
-#define QMLPROFILERCLIENTMANAGER_H
+#pragma once
 
 #include "qmlprofilerstatemanager.h"
 #include <qmldebug/qmlprofilereventlocation.h>
@@ -97,5 +96,3 @@ private:
 
 }
 }
-
-#endif // QMLPROFILERCLIENTMANAGER_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerconfigwidget.h b/src/plugins/qmlprofiler/qmlprofilerconfigwidget.h
index 479900a07b..2f3b0022b7 100644
--- a/src/plugins/qmlprofiler/qmlprofilerconfigwidget.h
+++ b/src/plugins/qmlprofiler/qmlprofilerconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERCONFIGWIDGET_H
-#define QMLPROFILERCONFIGWIDGET_H
+#pragma once
 
 #include "qmlprofilersettings.h"
 #include <QWidget>
@@ -55,5 +54,3 @@ private:
 
 } // Internal
 } // QmlProfiler
-
-#endif // QMLPROFILERCONFIGWIDGET_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerconstants.h b/src/plugins/qmlprofiler/qmlprofilerconstants.h
index a4fa0fa046..4f48437d69 100644
--- a/src/plugins/qmlprofiler/qmlprofilerconstants.h
+++ b/src/plugins/qmlprofiler/qmlprofilerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERCONSTANTS_H
-#define QMLPROFILERCONSTANTS_H
+#pragma once
 
 namespace QmlProfiler {
 namespace Constants {
@@ -53,5 +52,3 @@ const char QmlProfilerSaveActionId[] =
 
 } // namespace Constants
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERCONSTANTS_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerdatamodel.h b/src/plugins/qmlprofiler/qmlprofilerdatamodel.h
index 79521e7473..e3ffa78f50 100644
--- a/src/plugins/qmlprofiler/qmlprofilerdatamodel.h
+++ b/src/plugins/qmlprofiler/qmlprofilerdatamodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERDATAMODEL_H
-#define QMLPROFILERDATAMODEL_H
+#pragma once
 
 #include "qmlprofilermodelmanager.h"
 
@@ -237,5 +236,3 @@ private:
 };
 
 }
-
-#endif
diff --git a/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.h b/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.h
index 5269190866..b80c0d8e38 100644
--- a/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.h
+++ b/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERDETAILSREWRITER_H
-#define QMLPROFILERDETAILSREWRITER_H
+#pragma once
 
 #include <QObject>
 
@@ -62,5 +61,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERDETAILSREWRITER_H
diff --git a/src/plugins/qmlprofiler/qmlprofilereventsview.h b/src/plugins/qmlprofiler/qmlprofilereventsview.h
index 13c8143d9d..99efcd50d1 100644
--- a/src/plugins/qmlprofiler/qmlprofilereventsview.h
+++ b/src/plugins/qmlprofiler/qmlprofilereventsview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREVENTSVIEW_H
-#define QMLPROFILEREVENTSVIEW_H
+#pragma once
 
 #include "qmlprofiler_global.h"
 #include "qmlprofilermodelmanager.h"
@@ -63,5 +62,3 @@ public:
 };
 
 }
-
-#endif // QMLPROFILEREVENTSVIEW_H
diff --git a/src/plugins/qmlprofiler/qmlprofilermodelmanager.h b/src/plugins/qmlprofiler/qmlprofilermodelmanager.h
index 0c3574efb9..d0cfd34b24 100644
--- a/src/plugins/qmlprofiler/qmlprofilermodelmanager.h
+++ b/src/plugins/qmlprofiler/qmlprofilermodelmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERMODELMANAGER_H
-#define QMLPROFILERMODELMANAGER_H
+#pragma once
 
 #include "qmlprofiler_global.h"
 
@@ -145,5 +144,3 @@ private:
 };
 
 }
-
-#endif
diff --git a/src/plugins/qmlprofiler/qmlprofilernotesmodel.h b/src/plugins/qmlprofiler/qmlprofilernotesmodel.h
index d078c3ca07..c5bc56bb85 100644
--- a/src/plugins/qmlprofiler/qmlprofilernotesmodel.h
+++ b/src/plugins/qmlprofiler/qmlprofilernotesmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERNOTESMODEL_H
-#define QMLPROFILERNOTESMODEL_H
+#pragma once
 
 #include "qmlprofilermodelmanager.h"
 #include "timeline/timelinenotesmodel.h"
@@ -47,4 +46,3 @@ protected:
     int add(int typeId, qint64 startTime, qint64 duration, const QString &text);
 };
 } // namespace QmlProfiler
-#endif // QMLPROFILERNOTESMODEL_H
diff --git a/src/plugins/qmlprofiler/qmlprofileroptionspage.h b/src/plugins/qmlprofiler/qmlprofileroptionspage.h
index 61796c6fe9..62aeb68242 100644
--- a/src/plugins/qmlprofiler/qmlprofileroptionspage.h
+++ b/src/plugins/qmlprofiler/qmlprofileroptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEROPTIONSPAGE_H
-#define QMLPROFILEROPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <QPointer>
@@ -48,5 +47,3 @@ private:
 
 } // Internal
 } // QmlProfiler
-
-#endif // QMLPROFILEROPTIONSPAGE_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerplugin.h b/src/plugins/qmlprofiler/qmlprofilerplugin.h
index b7d29997c6..a3e2e147f7 100644
--- a/src/plugins/qmlprofiler/qmlprofilerplugin.h
+++ b/src/plugins/qmlprofiler/qmlprofilerplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERPLUGIN_H
-#define QMLPROFILERPLUGIN_H
+#pragma once
 
 #include "qmlprofiler_global.h"
 #include "qmlprofilertimelinemodelfactory.h"
@@ -60,6 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERPLUGIN_H
-
diff --git a/src/plugins/qmlprofiler/qmlprofilerrangemodel.h b/src/plugins/qmlprofiler/qmlprofilerrangemodel.h
index 118047ad44..043f8773c4 100644
--- a/src/plugins/qmlprofiler/qmlprofilerrangemodel.h
+++ b/src/plugins/qmlprofiler/qmlprofilerrangemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERRANGEMODEL_H
-#define QMLPROFILERRANGEMODEL_H
+#pragma once
 
 #include "qmlprofilertimelinemodel.h"
 #include <qmldebug/qmlprofilereventtypes.h>
@@ -89,5 +88,3 @@ private:
 
 }
 }
-
-#endif // QMLPROFILERRANGEMODEL_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerrunconfigurationaspect.h b/src/plugins/qmlprofiler/qmlprofilerrunconfigurationaspect.h
index 9bec1bc5de..ed6a97c488 100644
--- a/src/plugins/qmlprofiler/qmlprofilerrunconfigurationaspect.h
+++ b/src/plugins/qmlprofiler/qmlprofilerrunconfigurationaspect.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERRUNCONFIGURATIONASPECT_H
-#define QMLPROFILERRUNCONFIGURATIONASPECT_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -44,5 +43,3 @@ public:
 
 } // Internal
 } // QmlProfiler
-
-#endif // QMLPROFILERRUNCONFIGURATIONASPECT_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerruncontrol.h b/src/plugins/qmlprofiler/qmlprofilerruncontrol.h
index a44e6c710a..f012fab224 100644
--- a/src/plugins/qmlprofiler/qmlprofilerruncontrol.h
+++ b/src/plugins/qmlprofiler/qmlprofilerruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERRUNCONTROL_H
-#define QMLPROFILERRUNCONTROL_H
+#pragma once
 
 #include "qmlprofilerstatemanager.h"
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERRUNCONTROL_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerruncontrolfactory.h b/src/plugins/qmlprofiler/qmlprofilerruncontrolfactory.h
index af72840db1..5df3936673 100644
--- a/src/plugins/qmlprofiler/qmlprofilerruncontrolfactory.h
+++ b/src/plugins/qmlprofiler/qmlprofilerruncontrolfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERRUNCONTROLFACTORY_H
-#define QMLPROFILERRUNCONTROLFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -51,5 +50,3 @@ public:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERRUNCONTROLFACTORY_H
diff --git a/src/plugins/qmlprofiler/qmlprofilersettings.h b/src/plugins/qmlprofiler/qmlprofilersettings.h
index 1c12b37fa6..b452b3e9b7 100644
--- a/src/plugins/qmlprofiler/qmlprofilersettings.h
+++ b/src/plugins/qmlprofiler/qmlprofilersettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERSETTINGS_H
-#define QMLPROFILERSETTINGS_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -69,5 +68,3 @@ private:
 
 } // Internal
 } // QmlProfiler
-
-#endif // QMLPROFILERSETTINGS_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerstatemanager.h b/src/plugins/qmlprofiler/qmlprofilerstatemanager.h
index 0f577cf9e9..aa860b6b4e 100644
--- a/src/plugins/qmlprofiler/qmlprofilerstatemanager.h
+++ b/src/plugins/qmlprofiler/qmlprofilerstatemanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERSTATEMANAGER_H
-#define QMLPROFILERSTATEMANAGER_H
+#pragma once
 
 #include <QObject>
 
@@ -72,5 +71,3 @@ private:
 };
 
 }
-
-#endif // QMLPROFILERSTATEMANAGER_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerstatewidget.h b/src/plugins/qmlprofiler/qmlprofilerstatewidget.h
index 5064c70b0d..2f953a2973 100644
--- a/src/plugins/qmlprofiler/qmlprofilerstatewidget.h
+++ b/src/plugins/qmlprofiler/qmlprofilerstatewidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERSTATEWIDGET_H
-#define QMLPROFILERSTATEWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -57,5 +56,3 @@ private:
 
 }
 }
-
-#endif // QMLPROFILERSTATEWIDGET_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h b/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h
index 36c27da9cd..a709553fca 100644
--- a/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h
+++ b/src/plugins/qmlprofiler/qmlprofilerstatisticsmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERSTATISTICSMODEL_H
-#define QMLPROFILERSTATISTICSMODEL_H
+#pragma once
 
 #include "qmlprofilerdatamodel.h"
 #include "qmlprofilernotesmodel.h"
@@ -155,5 +154,3 @@ protected:
 };
 
 }
-
-#endif // QMLPROFILERSTATISTICSMODEL_H
diff --git a/src/plugins/qmlprofiler/qmlprofilerstatisticsview.h b/src/plugins/qmlprofiler/qmlprofilerstatisticsview.h
index 1d205b7dfd..8c5bedcebd 100644
--- a/src/plugins/qmlprofiler/qmlprofilerstatisticsview.h
+++ b/src/plugins/qmlprofiler/qmlprofilerstatisticsview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERSTATISTICSVIEW_H
-#define QMLPROFILERSTATISTICSVIEW_H
+#pragma once
 
 #include "qmlprofilermodelmanager.h"
 #include "qmlprofilerstatisticsmodel.h"
@@ -177,5 +176,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERSTATISTICSVIEW_H
diff --git a/src/plugins/qmlprofiler/qmlprofilertimelinemodel.h b/src/plugins/qmlprofiler/qmlprofilertimelinemodel.h
index 7e2d4a6f2c..8f4efd4429 100644
--- a/src/plugins/qmlprofiler/qmlprofilertimelinemodel.h
+++ b/src/plugins/qmlprofiler/qmlprofilertimelinemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERTIMELINEMODEL_H
-#define QMLPROFILERTIMELINEMODEL_H
+#pragma once
 
 #include "qmlprofiler_global.h"
 #include "qmlprofilermodelmanager.h"
@@ -74,5 +73,3 @@ private:
 };
 
 }
-
-#endif // QMLPROFILERTIMELINEMODEL_H
diff --git a/src/plugins/qmlprofiler/qmlprofilertimelinemodelfactory.h b/src/plugins/qmlprofiler/qmlprofilertimelinemodelfactory.h
index 8d507e95f8..6087c2d389 100644
--- a/src/plugins/qmlprofiler/qmlprofilertimelinemodelfactory.h
+++ b/src/plugins/qmlprofiler/qmlprofilertimelinemodelfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERTIMELINEMODELFACTORY_H
-#define QMLPROFILERTIMELINEMODELFACTORY_H
+#pragma once
 
 #include "qmlprofilertimelinemodel.h"
 #include "qmlprofilermodelmanager.h"
@@ -39,5 +38,3 @@ public:
 };
 
 }
-
-#endif // QMLPROFILERTIMELINEMODELFACTORY_H
diff --git a/src/plugins/qmlprofiler/qmlprofilertool.h b/src/plugins/qmlprofiler/qmlprofilertool.h
index 34c7e21505..29ca5beb5f 100644
--- a/src/plugins/qmlprofiler/qmlprofilertool.h
+++ b/src/plugins/qmlprofiler/qmlprofilertool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERTOOL_H
-#define QMLPROFILERTOOL_H
+#pragma once
 
 #include "qmlprofiler_global.h"
 #include "qmlprofilerconstants.h"
@@ -111,5 +110,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERTOOL_H
diff --git a/src/plugins/qmlprofiler/qmlprofilertracefile.h b/src/plugins/qmlprofiler/qmlprofilertracefile.h
index f29b04634d..433224d380 100644
--- a/src/plugins/qmlprofiler/qmlprofilertracefile.h
+++ b/src/plugins/qmlprofiler/qmlprofilertracefile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERTRACEFILE_H
-#define QMLPROFILERTRACEFILE_H
+#pragma once
 
 #include <QFutureInterface>
 #include <QObject>
@@ -113,5 +112,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERTRACEFILE_H
diff --git a/src/plugins/qmlprofiler/qmlprofilertraceview.h b/src/plugins/qmlprofiler/qmlprofilertraceview.h
index b7386ba15a..29e7915c20 100644
--- a/src/plugins/qmlprofiler/qmlprofilertraceview.h
+++ b/src/plugins/qmlprofiler/qmlprofilertraceview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERTRACEVIEW_H
-#define QMLPROFILERTRACEVIEW_H
+#pragma once
 
 #include "qmlprofilermodelmanager.h"
 
@@ -107,6 +106,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERTRACEVIEW_H
-
diff --git a/src/plugins/qmlprofiler/qmlprofilerviewmanager.h b/src/plugins/qmlprofiler/qmlprofilerviewmanager.h
index 191938f7f6..e7b5d9ee94 100644
--- a/src/plugins/qmlprofiler/qmlprofilerviewmanager.h
+++ b/src/plugins/qmlprofiler/qmlprofilerviewmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILERVIEWMANAGER_H
-#define QMLPROFILERVIEWMANAGER_H
+#pragma once
 
 #include <QObject>
 
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfiler
-
-#endif // QMLPROFILERVIEWMANAGER_H
diff --git a/src/plugins/qmlprofilerextension/debugmessagesmodel.h b/src/plugins/qmlprofilerextension/debugmessagesmodel.h
index e5934e204d..020b8a17b5 100644
--- a/src/plugins/qmlprofilerextension/debugmessagesmodel.h
+++ b/src/plugins/qmlprofilerextension/debugmessagesmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEBUGMESSAGESMODEL_H
-#define DEBUGMESSAGESMODEL_H
+#pragma once
 
 #include "qmlprofiler/qmlprofilertimelinemodel.h"
 
@@ -67,5 +66,3 @@ private:
 
 }
 }
-
-#endif // DEBUGMESSAGESMODEL_H
diff --git a/src/plugins/qmlprofilerextension/flamegraph.h b/src/plugins/qmlprofilerextension/flamegraph.h
index 832752c3b8..435a233a78 100644
--- a/src/plugins/qmlprofilerextension/flamegraph.h
+++ b/src/plugins/qmlprofilerextension/flamegraph.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FLAMEGRAPH_H
-#define FLAMEGRAPH_H
+#pragma once
 
 #include <QQuickItem>
 #include <QAbstractItemModel>
@@ -156,5 +155,3 @@ private:
 }
 
 QML_DECLARE_TYPEINFO(QmlProfilerExtension::Internal::FlameGraph, QML_HAS_ATTACHED_PROPERTIES)
-
-#endif // FLAMEGRAPH_H
diff --git a/src/plugins/qmlprofilerextension/flamegraphmodel.h b/src/plugins/qmlprofilerextension/flamegraphmodel.h
index e3e49b77a1..0063db7f43 100644
--- a/src/plugins/qmlprofilerextension/flamegraphmodel.h
+++ b/src/plugins/qmlprofilerextension/flamegraphmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREVENTSMODEL_H
-#define QMLPROFILEREVENTSMODEL_H
+#pragma once
 
 #include <qmlprofiler/qmlprofilerdatamodel.h>
 #include <qmlprofiler/qmlprofilernotesmodel.h>
@@ -110,5 +109,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlprofilerExtension
-
-#endif // QMLPROFILEREVENTSMODEL_H
diff --git a/src/plugins/qmlprofilerextension/flamegraphview.h b/src/plugins/qmlprofilerextension/flamegraphview.h
index b98b673152..cd91775979 100644
--- a/src/plugins/qmlprofilerextension/flamegraphview.h
+++ b/src/plugins/qmlprofilerextension/flamegraphview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FLAMEGRAPHVIEW_H
-#define FLAMEGRAPHVIEW_H
+#pragma once
 
 #include "flamegraphmodel.h"
 
@@ -60,5 +59,3 @@ private:
 
 }
 }
-
-#endif // FLAMEGRAPHVIEW_H
diff --git a/src/plugins/qmlprofilerextension/inputeventsmodel.h b/src/plugins/qmlprofilerextension/inputeventsmodel.h
index 72a58642dc..4ee69ffbe6 100644
--- a/src/plugins/qmlprofilerextension/inputeventsmodel.h
+++ b/src/plugins/qmlprofilerextension/inputeventsmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INPUTEVENTSMODEL_H
-#define INPUTEVENTSMODEL_H
+#pragma once
 
 #include "qmlprofiler/qmlprofilertimelinemodel.h"
 
@@ -68,4 +67,3 @@ private:
 
 }
 }
-#endif // INPUTEVENTSMODEL_H
diff --git a/src/plugins/qmlprofilerextension/memoryusagemodel.h b/src/plugins/qmlprofilerextension/memoryusagemodel.h
index bf7b557afa..bc945c64f8 100644
--- a/src/plugins/qmlprofilerextension/memoryusagemodel.h
+++ b/src/plugins/qmlprofilerextension/memoryusagemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MEMORYUSAGEMODEL_H
-#define MEMORYUSAGEMODEL_H
+#pragma once
 
 #include "qmlprofiler/qmlprofilertimelinemodel.h"
 #include "qmlprofiler/qmlprofilerdatamodel.h"
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfilerExtension
-
-#endif // MEMORYUSAGEMODEL_H
diff --git a/src/plugins/qmlprofilerextension/pixmapcachemodel.h b/src/plugins/qmlprofilerextension/pixmapcachemodel.h
index 4d9fac2763..b5a8dc42c9 100644
--- a/src/plugins/qmlprofilerextension/pixmapcachemodel.h
+++ b/src/plugins/qmlprofilerextension/pixmapcachemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PIXMAPCACHEMODEL_H
-#define PIXMAPCACHEMODEL_H
+#pragma once
 
 #include "qmlprofiler/qmlprofilertimelinemodel.h"
 #include "qmlprofiler/qmlprofilerdatamodel.h"
@@ -126,5 +125,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfilerExtension
-
-#endif // PIXMAPCACHEMODEL_H
diff --git a/src/plugins/qmlprofilerextension/qmlprofilerextension_global.h b/src/plugins/qmlprofilerextension/qmlprofilerextension_global.h
index a8faba9971..e98fdae737 100644
--- a/src/plugins/qmlprofilerextension/qmlprofilerextension_global.h
+++ b/src/plugins/qmlprofilerextension/qmlprofilerextension_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREXTENSION_GLOBAL_H
-#define QMLPROFILEREXTENSION_GLOBAL_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -33,6 +32,3 @@
 #else
 #  define QMLPROFILEREXTENSIONSHARED_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLPROFILEREXTENSION_GLOBAL_H
-
diff --git a/src/plugins/qmlprofilerextension/qmlprofilerextensionconstants.h b/src/plugins/qmlprofilerextension/qmlprofilerextensionconstants.h
index e7c730c9d5..198e8c737b 100644
--- a/src/plugins/qmlprofilerextension/qmlprofilerextensionconstants.h
+++ b/src/plugins/qmlprofilerextension/qmlprofilerextensionconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREXTENSIONCONSTANTS_H
-#define QMLPROFILEREXTENSIONCONSTANTS_H
+#pragma once
 
 namespace QmlProfilerExtension {
 namespace Constants {
@@ -34,6 +33,3 @@ const char MENU_ID[] = "QmlProfilerExtension.Menu";
 
 } // namespace QmlProfilerExtension
 } // namespace Constants
-
-#endif // QMLPROFILEREXTENSIONCONSTANTS_H
-
diff --git a/src/plugins/qmlprofilerextension/qmlprofilerextensionplugin.h b/src/plugins/qmlprofilerextension/qmlprofilerextensionplugin.h
index 63571cde69..45024e033c 100644
--- a/src/plugins/qmlprofilerextension/qmlprofilerextensionplugin.h
+++ b/src/plugins/qmlprofilerextension/qmlprofilerextensionplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROFILEREXTENSION_H
-#define QMLPROFILEREXTENSION_H
+#pragma once
 
 #include "qmlprofilerextension_global.h"
 
@@ -52,6 +51,3 @@ private slots:
 
 } // namespace Internal
 } // namespace QmlProfilerExtension
-
-#endif // QMLPROFILEREXTENSION_H
-
diff --git a/src/plugins/qmlprofilerextension/scenegraphtimelinemodel.h b/src/plugins/qmlprofilerextension/scenegraphtimelinemodel.h
index 59782769dd..6e8aaf8d8e 100644
--- a/src/plugins/qmlprofilerextension/scenegraphtimelinemodel.h
+++ b/src/plugins/qmlprofilerextension/scenegraphtimelinemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SCENEGRAPHTIMELINEMODEL_H
-#define SCENEGRAPHTIMELINEMODEL_H
+#pragma once
 
 #include "qmlprofiler/qmlprofilertimelinemodel.h"
 #include "qmlprofiler/qmlprofilermodelmanager.h"
@@ -110,5 +109,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProfilerExtension
-
-#endif // SCENEGRAPHTIMELINEMODEL_H
diff --git a/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h b/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h
index 6a5f439d40..89e41b3834 100644
--- a/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h
+++ b/src/plugins/qmlprojectmanager/fileformat/filefilteritems.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILEFILTERITEMS_H
-#define FILEFILTERITEMS_H
+#pragma once
 
 #include "qmlprojectitem.h"
 
@@ -172,5 +171,3 @@ public:
 };
 
 } // namespace QmlProjectManager
-
-#endif // FILEFILTERITEMS_HPROJECTITEM_H
diff --git a/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.h b/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.h
index f1cf42ba6d..12a152b125 100644
--- a/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.h
+++ b/src/plugins/qmlprojectmanager/fileformat/qmlprojectfileformat.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTFILEFORMAT_H
-#define QMLPROJECTFILEFORMAT_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -44,5 +43,3 @@ public:
 };
 
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTFILEFORMAT_H
diff --git a/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h b/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h
index d114eb75f9..673f4ced48 100644
--- a/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h
+++ b/src/plugins/qmlprojectmanager/fileformat/qmlprojectitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTITEM_H
-#define QMLPROJECTITEM_H
+#pragma once
 
 #include <QObject>
 #include <QSet>
@@ -80,5 +79,3 @@ protected:
 };
 
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTITEM_H
diff --git a/src/plugins/qmlprojectmanager/qmlproject.h b/src/plugins/qmlprojectmanager/qmlproject.h
index 1af818da0d..41fdcff8e0 100644
--- a/src/plugins/qmlprojectmanager/qmlproject.h
+++ b/src/plugins/qmlprojectmanager/qmlproject.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECT_H
-#define QMLPROJECT_H
+#pragma once
 
 #include "qmlprojectmanager_global.h"
 
@@ -116,5 +115,3 @@ private:
 } // namespace QmlProjectManager
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QmlProjectManager::QmlProject::RefreshOptions)
-
-#endif // QMLPROJECT_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectconstants.h b/src/plugins/qmlprojectmanager/qmlprojectconstants.h
index 72ba2dcfc8..bc2d63cf64 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectconstants.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTCONSTANTS_H
-#define QMLPROJECTCONSTANTS_H
+#pragma once
 
 #include <qmljstools/qmljstoolsconstants.h>
 
@@ -36,5 +35,3 @@ const char * const QMLPROJECT_MIMETYPE = QmlJSTools::Constants::QMLPROJECT_MIMET
 
 } // namespace Constants
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTCONSTANTS_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectenvironmentaspect.h b/src/plugins/qmlprojectmanager/qmlprojectenvironmentaspect.h
index 78e34cb789..177d2d89cd 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectenvironmentaspect.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectenvironmentaspect.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTENVIRONMENTASPECT_H
-#define QMLPROJECTENVIRONMENTASPECT_H
+#pragma once
 
 #include <projectexplorer/environmentaspect.h>
 
@@ -50,5 +49,3 @@ private:
 };
 
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTENVIRONMENTASPECT_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectfile.h b/src/plugins/qmlprojectmanager/qmlprojectfile.h
index d1f4bcd91f..90805fa018 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectfile.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTFILE_H
-#define QMLPROJECTFILE_H
+#pragma once
 
 #include <coreplugin/idocument.h>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTFILE_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectmanager.h b/src/plugins/qmlprojectmanager/qmlprojectmanager.h
index 24be9c12e5..3e0782c25b 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectmanager.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTMANAGER_H
-#define QMLPROJECTMANAGER_H
+#pragma once
 
 #include <projectexplorer/iprojectmanager.h>
 #include <coreplugin/icontext.h>
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTMANAGER_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectmanager_global.h b/src/plugins/qmlprojectmanager/qmlprojectmanager_global.h
index d69d30ea51..0d30f82da9 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectmanager_global.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectmanager_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTMANAGER_GLOBAL_H
-#define QMLPROJECTMANAGER_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define QMLPROJECTMANAGER_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QMLPROJECTMANAGER_GLOBAL_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectmanagerconstants.h b/src/plugins/qmlprojectmanager/qmlprojectmanagerconstants.h
index 0b73aaebee..783a067b74 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectmanagerconstants.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectmanagerconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTMANAGERCONSTANTS_H
-#define QMLPROJECTMANAGERCONSTANTS_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -40,5 +39,3 @@ const char USER_ENVIRONMENT_CHANGES_KEY[] = "QmlProjectManager.QmlRunConfigurati
 
 } // namespace Constants
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTMANAGERCONSTANTS_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectnodes.h b/src/plugins/qmlprojectmanager/qmlprojectnodes.h
index c8239e4d64..6198cd10ea 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectnodes.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectnodes.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTNODES_H
-#define QMLPROJECTNODES_H
+#pragma once
 
 #include <projectexplorer/projectnodes.h>
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTNODES_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectplugin.h b/src/plugins/qmlprojectmanager/qmlprojectplugin.h
index 47a94f6cb1..52065a3b86 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectplugin.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTPLUGIN_H
-#define QMLPROJECTPLUGIN_H
+#pragma once
 
 #include "qmlprojectmanager_global.h"
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // namespace QmlProject
-
-#endif // QMLPROJECTPLUGIN_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h
index e271d84fa6..196bdc28e0 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTRUNCONFIGURATION_H
-#define QMLPROJECTRUNCONFIGURATION_H
+#pragma once
 
 #include "qmlprojectmanager_global.h"
 
@@ -113,5 +112,3 @@ private:
 };
 
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTRUNCONFIGURATION_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationfactory.h b/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationfactory.h
index e042060d63..b084341b97 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationfactory.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTRUNCONFIGURATIONFACTORY_H
-#define QMLPROJECTRUNCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -56,6 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProjectManager
-
-
-#endif // QMLPROJECTRUNCONFIGURATIONFACTORY_H
diff --git a/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationwidget.h b/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationwidget.h
index 260b1a405b..efa3528764 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationwidget.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectrunconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLPROJECTRUNCONFIGURATIONWIDGET_H
-#define QMLPROJECTRUNCONFIGURATIONWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace QmlProjectManager
-
-#endif // QMLPROJECTRUNCONFIGURATIONWIDGET_H
diff --git a/src/plugins/qnx/pathchooserdelegate.h b/src/plugins/qnx/pathchooserdelegate.h
index cc2960756b..fca0fe1412 100644
--- a/src/plugins/qnx/pathchooserdelegate.h
+++ b/src/plugins/qnx/pathchooserdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_PATHCHOOSERDELEGATE_H
-#define QNX_INTERNAL_PATHCHOOSERDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_PATHCHOOSERDELEGATE_H
diff --git a/src/plugins/qnx/qnx_export.h b/src/plugins/qnx/qnx_export.h
index 32c32b8f7e..1fda4c0a29 100644
--- a/src/plugins/qnx/qnx_export.h
+++ b/src/plugins/qnx/qnx_export.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_EXPORT_H
-#define QNX_EXPORT_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define QNX_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // QNX_EXPORT_H
diff --git a/src/plugins/qnx/qnxabstractrunsupport.h b/src/plugins/qnx/qnxabstractrunsupport.h
index 18658712ff..d28ca70f30 100644
--- a/src/plugins/qnx/qnxabstractrunsupport.h
+++ b/src/plugins/qnx/qnxabstractrunsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXABSTRACTRUNSUPPORT_H
-#define QNXABSTRACTRUNSUPPORT_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 #include <utils/environment.h>
@@ -90,5 +89,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNXABSTRACTRUNSUPPORT_H
diff --git a/src/plugins/qnx/qnxanalyzesupport.h b/src/plugins/qnx/qnxanalyzesupport.h
index d1361fff3a..d849b45353 100644
--- a/src/plugins/qnx/qnxanalyzesupport.h
+++ b/src/plugins/qnx/qnxanalyzesupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXANALYZESUPPORT_H
-#define QNXANALYZESUPPORT_H
+#pragma once
 
 #include "qnxabstractrunsupport.h"
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNXANALYZESUPPORT_H
diff --git a/src/plugins/qnx/qnxattachdebugdialog.h b/src/plugins/qnx/qnxattachdebugdialog.h
index 4b1bed635a..ef124555ff 100644
--- a/src/plugins/qnx/qnxattachdebugdialog.h
+++ b/src/plugins/qnx/qnxattachdebugdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXATTACHDEBUGDIALOG_H
-#define QNX_INTERNAL_QNXATTACHDEBUGDIALOG_H
+#pragma once
 
 #include <projectexplorer/devicesupport/deviceprocessesdialog.h>
 
@@ -50,5 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXATTACHDEBUGDIALOG_H
diff --git a/src/plugins/qnx/qnxattachdebugsupport.h b/src/plugins/qnx/qnxattachdebugsupport.h
index 2044a2d833..328c9bda1e 100644
--- a/src/plugins/qnx/qnxattachdebugsupport.h
+++ b/src/plugins/qnx/qnxattachdebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXATTACHDEBUGSUPPORT_H
-#define QNX_INTERNAL_QNXATTACHDEBUGSUPPORT_H
+#pragma once
 
 #include <debugger/debuggerconstants.h>
 #include <projectexplorer/devicesupport/deviceprocesslist.h>
@@ -79,5 +78,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXATTACHDEBUGSUPPORT_H
diff --git a/src/plugins/qnx/qnxbaseqtconfigwidget.h b/src/plugins/qnx/qnxbaseqtconfigwidget.h
index 7c1788dc0b..1dacb1ad39 100644
--- a/src/plugins/qnx/qnxbaseqtconfigwidget.h
+++ b/src/plugins/qnx/qnxbaseqtconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXBASEQTCONFIGWIDGET_H
-#define QNX_INTERNAL_QNXBASEQTCONFIGWIDGET_H
+#pragma once
 
 #include <qtsupport/qtconfigwidget.h>
 
@@ -52,5 +51,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXBASEQTCONFIGWIDGET_H
diff --git a/src/plugins/qnx/qnxconfiguration.h b/src/plugins/qnx/qnxconfiguration.h
index 22836dfb02..5212560394 100644
--- a/src/plugins/qnx/qnxconfiguration.h
+++ b/src/plugins/qnx/qnxconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXCONFIGURATION_H
-#define QNXCONFIGURATION_H
+#pragma once
 
 #include "qnxconstants.h"
 #include "qnxutils.h"
@@ -108,5 +107,3 @@ private:
 
 } // Internal
 } // Qnx
-
-#endif // QNXCONFIGURATION_H
diff --git a/src/plugins/qnx/qnxconfigurationmanager.h b/src/plugins/qnx/qnxconfigurationmanager.h
index 9bbcf774d2..ee8d91624a 100644
--- a/src/plugins/qnx/qnxconfigurationmanager.h
+++ b/src/plugins/qnx/qnxconfigurationmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXCONFIGURATIONMANAGER_H
-#define QNXCONFIGURATIONMANAGER_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -64,5 +63,3 @@ private:
 
 }
 }
-
-#endif // QNXCONFIGURATIONMANAGER_H
diff --git a/src/plugins/qnx/qnxconstants.h b/src/plugins/qnx/qnxconstants.h
index 795e4560c2..c77dbc21e5 100644
--- a/src/plugins/qnx/qnxconstants.h
+++ b/src/plugins/qnx/qnxconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_QNXCONSTANTS_H
-#define QNX_QNXCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -67,5 +66,3 @@ const char QNX_DEBUGGING_GROUP[] = "Debugger.Group.Qnx";
 
 } // namespace Constants
 } // namespace Qnx
-
-#endif // QNX_QNXCONSTANTS_H
diff --git a/src/plugins/qnx/qnxdebugsupport.h b/src/plugins/qnx/qnxdebugsupport.h
index ad4196d7ee..743cc14002 100644
--- a/src/plugins/qnx/qnxdebugsupport.h
+++ b/src/plugins/qnx/qnxdebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEBUGSUPPORT_H
-#define QNX_INTERNAL_QNXDEBUGSUPPORT_H
+#pragma once
 
 #include "qnxabstractrunsupport.h"
 
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEBUGSUPPORT_H
diff --git a/src/plugins/qnx/qnxdeployconfiguration.h b/src/plugins/qnx/qnxdeployconfiguration.h
index 8ffedb896c..0af2552c0d 100644
--- a/src/plugins/qnx/qnxdeployconfiguration.h
+++ b/src/plugins/qnx/qnxdeployconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEPLOYCONFIGURATION_H
-#define QNX_INTERNAL_QNXDEPLOYCONFIGURATION_H
+#pragma once
 
 #include <remotelinux/remotelinuxdeployconfiguration.h>
 
@@ -47,5 +46,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEPLOYCONFIGURATION_H
diff --git a/src/plugins/qnx/qnxdeployconfigurationfactory.h b/src/plugins/qnx/qnxdeployconfigurationfactory.h
index f6a7edd509..6564470c19 100644
--- a/src/plugins/qnx/qnxdeployconfigurationfactory.h
+++ b/src/plugins/qnx/qnxdeployconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEPLOYCONFIGURATIONFACTORY_H
-#define QNX_INTERNAL_QNXDEPLOYCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/deployconfiguration.h>
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEPLOYCONFIGURATIONFACTORY_H
diff --git a/src/plugins/qnx/qnxdeployqtlibrariesdialog.h b/src/plugins/qnx/qnxdeployqtlibrariesdialog.h
index 29d3496c0b..fa6dc6d6ec 100644
--- a/src/plugins/qnx/qnxdeployqtlibrariesdialog.h
+++ b/src/plugins/qnx/qnxdeployqtlibrariesdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEPLOYQTLIBRARIESDIALOG_H
-#define QNX_INTERNAL_QNXDEPLOYQTLIBRARIESDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -100,4 +99,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-#endif // QNX_INTERNAL_QNXDEPLOYQTLIBRARIESDIALOG_H
diff --git a/src/plugins/qnx/qnxdeploystepfactory.h b/src/plugins/qnx/qnxdeploystepfactory.h
index 1e3d2702c6..dc9d6e98a6 100644
--- a/src/plugins/qnx/qnxdeploystepfactory.h
+++ b/src/plugins/qnx/qnxdeploystepfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEPLOYSTEPFACTORY_H
-#define QNX_INTERNAL_QNXDEPLOYSTEPFACTORY_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -55,5 +54,3 @@ public:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEPLOYSTEPFACTORY_H
diff --git a/src/plugins/qnx/qnxdeviceconfiguration.h b/src/plugins/qnx/qnxdeviceconfiguration.h
index e77813fd74..49fc917772 100644
--- a/src/plugins/qnx/qnxdeviceconfiguration.h
+++ b/src/plugins/qnx/qnxdeviceconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEVICECONFIGURATION_H
-#define QNX_INTERNAL_QNXDEVICECONFIGURATION_H
+#pragma once
 
 #include "qnx_export.h"
 
@@ -79,5 +78,3 @@ private:
 };
 
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEVICECONFIGURATION_H
diff --git a/src/plugins/qnx/qnxdeviceconfigurationfactory.h b/src/plugins/qnx/qnxdeviceconfigurationfactory.h
index a683c18bdd..cfa5b97f15 100644
--- a/src/plugins/qnx/qnxdeviceconfigurationfactory.h
+++ b/src/plugins/qnx/qnxdeviceconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEVICECONFIGURATIONFACTORY_H
-#define QNX_INTERNAL_QNXDEVICECONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicefactory.h>
 
@@ -51,5 +50,3 @@ public:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEVICECONFIGURATIONFACTORY_H
diff --git a/src/plugins/qnx/qnxdeviceconfigurationwizard.h b/src/plugins/qnx/qnxdeviceconfigurationwizard.h
index a32c15337b..83e8857639 100644
--- a/src/plugins/qnx/qnxdeviceconfigurationwizard.h
+++ b/src/plugins/qnx/qnxdeviceconfigurationwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEVICECONFIGURATIONWIZARD_H
-#define QNX_INTERNAL_QNXDEVICECONFIGURATIONWIZARD_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 #include <utils/wizard.h>
@@ -57,5 +56,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEVICECONFIGURATIONWIZARD_H
diff --git a/src/plugins/qnx/qnxdeviceconfigurationwizardpages.h b/src/plugins/qnx/qnxdeviceconfigurationwizardpages.h
index 2791632ce5..fcd31884f7 100644
--- a/src/plugins/qnx/qnxdeviceconfigurationwizardpages.h
+++ b/src/plugins/qnx/qnxdeviceconfigurationwizardpages.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEVICECONFIGURATIONWIZARDPAGES_H
-#define QNX_INTERNAL_QNXDEVICECONFIGURATIONWIZARDPAGES_H
+#pragma once
 
 #include <remotelinux/genericlinuxdeviceconfigurationwizardpages.h>
 
@@ -42,5 +41,3 @@ public:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEVICECONFIGURATIONWIZARDPAGES_H
diff --git a/src/plugins/qnx/qnxdeviceprocess.h b/src/plugins/qnx/qnxdeviceprocess.h
index d425b0600c..6fbb6ac8eb 100644
--- a/src/plugins/qnx/qnxdeviceprocess.h
+++ b/src/plugins/qnx/qnxdeviceprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXDEVICEPROCESS_H
-#define QNXDEVICEPROCESS_H
+#pragma once
 
 #include "qnx_export.h"
 #include <remotelinux/linuxdevice.h>
@@ -50,5 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNXDEVICEPROCESS_H
diff --git a/src/plugins/qnx/qnxdeviceprocesslist.h b/src/plugins/qnx/qnxdeviceprocesslist.h
index 000d4717ff..47c279e2e9 100644
--- a/src/plugins/qnx/qnxdeviceprocesslist.h
+++ b/src/plugins/qnx/qnxdeviceprocesslist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEVICEPROCESSLIST_H
-#define QNX_INTERNAL_QNXDEVICEPROCESSLIST_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 #include <projectexplorer/devicesupport/sshdeviceprocesslist.h>
@@ -47,5 +46,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEVICEPROCESSLIST_H
diff --git a/src/plugins/qnx/qnxdeviceprocesssignaloperation.h b/src/plugins/qnx/qnxdeviceprocesssignaloperation.h
index f161a5167f..9e528a800e 100644
--- a/src/plugins/qnx/qnxdeviceprocesssignaloperation.h
+++ b/src/plugins/qnx/qnxdeviceprocesssignaloperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXDEVICEPROCESSSIGNALOPERATION_H
-#define QNXDEVICEPROCESSSIGNALOPERATION_H
+#pragma once
 
 #include <remotelinux/remotelinuxsignaloperation.h>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNXDEVICEPROCESSSIGNALOPERATION_H
diff --git a/src/plugins/qnx/qnxdevicetester.h b/src/plugins/qnx/qnxdevicetester.h
index 444723e3a1..093eb25a88 100644
--- a/src/plugins/qnx/qnxdevicetester.h
+++ b/src/plugins/qnx/qnxdevicetester.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXDEVICETESTER_H
-#define QNX_INTERNAL_QNXDEVICETESTER_H
+#pragma once
 
 #include <remotelinux/linuxdevicetester.h>
 
@@ -74,5 +73,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXDEVICETESTER_H
diff --git a/src/plugins/qnx/qnxplugin.h b/src/plugins/qnx/qnxplugin.h
index 9859ddb7dc..1fd1367cb8 100644
--- a/src/plugins/qnx/qnxplugin.h
+++ b/src/plugins/qnx/qnxplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXPLUGIN_H
-#define QNX_INTERNAL_QNXPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXPLUGIN_H
diff --git a/src/plugins/qnx/qnxqtversion.h b/src/plugins/qnx/qnxqtversion.h
index 04824849d8..225af67867 100644
--- a/src/plugins/qnx/qnxqtversion.h
+++ b/src/plugins/qnx/qnxqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXQTVERSION_H
-#define QNX_INTERNAL_QNXQTVERSION_H
+#pragma once
 
 #include "qnxconstants.h"
 #include "qnxqtversion.h"
@@ -88,5 +87,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXQTVERSION_H
diff --git a/src/plugins/qnx/qnxqtversionfactory.h b/src/plugins/qnx/qnxqtversionfactory.h
index 7904859ece..6f565b0184 100644
--- a/src/plugins/qnx/qnxqtversionfactory.h
+++ b/src/plugins/qnx/qnxqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXQTVERSIONFACTORY_H
-#define QNX_INTERNAL_QNXQTVERSIONFACTORY_H
+#pragma once
 
 #include <qtsupport/qtversionfactory.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXQTVERSIONFACTORY_H
diff --git a/src/plugins/qnx/qnxrunconfiguration.h b/src/plugins/qnx/qnxrunconfiguration.h
index 7eadf342fe..f897aefa2a 100644
--- a/src/plugins/qnx/qnxrunconfiguration.h
+++ b/src/plugins/qnx/qnxrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXRUNCONFIGURATION_H
-#define QNX_INTERNAL_QNXRUNCONFIGURATION_H
+#pragma once
 
 #include <remotelinux/remotelinuxrunconfiguration.h>
 
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXRUNCONFIGURATION_H
diff --git a/src/plugins/qnx/qnxrunconfigurationfactory.h b/src/plugins/qnx/qnxrunconfigurationfactory.h
index 8d1e15d907..5bf5e538be 100644
--- a/src/plugins/qnx/qnxrunconfigurationfactory.h
+++ b/src/plugins/qnx/qnxrunconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXRUNCONFIGURATIONFACTORY_H
-#define QNX_INTERNAL_QNXRUNCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -60,5 +59,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXRUNCONFIGURATIONFACTORY_H
diff --git a/src/plugins/qnx/qnxruncontrol.h b/src/plugins/qnx/qnxruncontrol.h
index 39b2902091..61985f6daa 100644
--- a/src/plugins/qnx/qnxruncontrol.h
+++ b/src/plugins/qnx/qnxruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXRUNCONTROL_H
-#define QNX_INTERNAL_QNXRUNCONTROL_H
+#pragma once
 
 #include <remotelinux/remotelinuxruncontrol.h>
 
@@ -50,5 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXRUNCONTROL_H
diff --git a/src/plugins/qnx/qnxruncontrolfactory.h b/src/plugins/qnx/qnxruncontrolfactory.h
index 003b523e75..af19a7f3dd 100644
--- a/src/plugins/qnx/qnxruncontrolfactory.h
+++ b/src/plugins/qnx/qnxruncontrolfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXRUNCONTROLFACTORY_H
-#define QNX_INTERNAL_QNXRUNCONTROLFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -46,5 +45,3 @@ public:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXRUNCONTROLFACTORY_H
diff --git a/src/plugins/qnx/qnxsettingspage.h b/src/plugins/qnx/qnxsettingspage.h
index e23d59ae94..6358f7a25b 100644
--- a/src/plugins/qnx/qnxsettingspage.h
+++ b/src/plugins/qnx/qnxsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXSETTINGSPAGE_H
-#define QNXSETTINGSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
@@ -50,5 +49,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNXSETTINGSPAGE_H
diff --git a/src/plugins/qnx/qnxsettingswidget.h b/src/plugins/qnx/qnxsettingswidget.h
index 999417a867..879697f688 100644
--- a/src/plugins/qnx/qnxsettingswidget.h
+++ b/src/plugins/qnx/qnxsettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXSETTINGSWIDGET_H
-#define QNXSETTINGSWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -89,5 +88,3 @@ private:
 
 }
 }
-
-#endif // QNXSETTINGSWIDGET_H
diff --git a/src/plugins/qnx/qnxtoolchain.h b/src/plugins/qnx/qnxtoolchain.h
index b1bbac7d33..8314b9f62f 100644
--- a/src/plugins/qnx/qnxtoolchain.h
+++ b/src/plugins/qnx/qnxtoolchain.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNXTOOLCHAIN_H
-#define QNXTOOLCHAIN_H
+#pragma once
 
 #include <projectexplorer/gcctoolchain.h>
 #include <projectexplorer/gcctoolchainfactories.h>
@@ -102,5 +101,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNXTOOLCHAIN_H
diff --git a/src/plugins/qnx/qnxutils.h b/src/plugins/qnx/qnxutils.h
index 9169ea8b3a..f62c50ed37 100644
--- a/src/plugins/qnx/qnxutils.h
+++ b/src/plugins/qnx/qnxutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_QNXUTILS_H
-#define QNX_INTERNAL_QNXUTILS_H
+#pragma once
 
 #include "qnxconstants.h"
 
@@ -74,5 +73,3 @@ public:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_QNXUTILS_H
diff --git a/src/plugins/qnx/qnxversionnumber.h b/src/plugins/qnx/qnxversionnumber.h
index 5dfa93c09b..9b619df651 100644
--- a/src/plugins/qnx/qnxversionnumber.h
+++ b/src/plugins/qnx/qnxversionnumber.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_VERSION_NUMBER_H
-#define QNX_VERSION_NUMBER_H
+#pragma once
 
 #include <QStringList>
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_VERSION_NUMBER_H
diff --git a/src/plugins/qnx/slog2inforunner.h b/src/plugins/qnx/slog2inforunner.h
index 4fbcfaa672..4e08b5f950 100644
--- a/src/plugins/qnx/slog2inforunner.h
+++ b/src/plugins/qnx/slog2inforunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QNX_INTERNAL_SLOG2INFORUNNER_H
-#define QNX_INTERNAL_SLOG2INFORUNNER_H
+#pragma once
 
 #include <QObject>
 
@@ -86,5 +85,3 @@ private:
 
 } // namespace Internal
 } // namespace Qnx
-
-#endif // QNX_INTERNAL_SLOG2INFORUNNER_H
diff --git a/src/plugins/qtsupport/baseqtversion.h b/src/plugins/qtsupport/baseqtversion.h
index 5bada03e60..c50497601d 100644
--- a/src/plugins/qtsupport/baseqtversion.h
+++ b/src/plugins/qtsupport/baseqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEQTVERSION_H
-#define BASEQTVERSION_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -304,4 +303,3 @@ private:
 }
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QtSupport::BaseQtVersion::QmakeBuildConfigs)
-#endif // BASEQTVERSION_H
diff --git a/src/plugins/qtsupport/codegenerator.h b/src/plugins/qtsupport/codegenerator.h
index d52da62a6d..dd916518cb 100644
--- a/src/plugins/qtsupport/codegenerator.h
+++ b/src/plugins/qtsupport/codegenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODEGENERATOR_H
-#define CODEGENERATOR_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -54,5 +53,3 @@ public:
 };
 
 } // namespace QtSupport
-
-#endif // CODEGENERATOR_H
diff --git a/src/plugins/qtsupport/codegensettings.h b/src/plugins/qtsupport/codegensettings.h
index b9d0e78a57..a5973683a2 100644
--- a/src/plugins/qtsupport/codegensettings.h
+++ b/src/plugins/qtsupport/codegensettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODEGENSETTINGS_H
-#define CODEGENSETTINGS_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -59,5 +58,3 @@ inline bool operator==(const CodeGenSettings &p1, const CodeGenSettings &p2) { r
 inline bool operator!=(const CodeGenSettings &p1, const CodeGenSettings &p2) { return !p1.equals(p2); }
 
 } // namespace QtSupport
-
-#endif // CODEGENSETTINGS_H
diff --git a/src/plugins/qtsupport/codegensettingspage.h b/src/plugins/qtsupport/codegensettingspage.h
index 83a9c3a584..73a053ca5b 100644
--- a/src/plugins/qtsupport/codegensettingspage.h
+++ b/src/plugins/qtsupport/codegensettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODEGENSETTINGSPAGE_H
-#define CODEGENSETTINGSPAGE_H
+#pragma once
 
 #include "ui_codegensettingspagewidget.h"
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace QtSupport
-
-#endif // CODEGENSETTINGSPAGE_H
diff --git a/src/plugins/qtsupport/customexecutableconfigurationwidget.h b/src/plugins/qtsupport/customexecutableconfigurationwidget.h
index 10e3a031ec..fe247de069 100644
--- a/src/plugins/qtsupport/customexecutableconfigurationwidget.h
+++ b/src/plugins/qtsupport/customexecutableconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMEXECUTABLECONFIGURATIONWIDGET_H
-#define CUSTOMEXECUTABLECONFIGURATIONWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -83,5 +82,3 @@ private:
 
 } // namespace Internal
 } // namespace QtSupport
-
-#endif // CUSTOMEXECUTABLECONFIGURATIONWIDGET_H
diff --git a/src/plugins/qtsupport/customexecutablerunconfiguration.h b/src/plugins/qtsupport/customexecutablerunconfiguration.h
index 0b980ded78..b7370a0911 100644
--- a/src/plugins/qtsupport/customexecutablerunconfiguration.h
+++ b/src/plugins/qtsupport/customexecutablerunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMEXECUTABLERUNCONFIGURATION_H
-#define CUSTOMEXECUTABLERUNCONFIGURATION_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -123,5 +122,3 @@ private:
 };
 
 } // namespace QtSupport
-
-#endif // CUSTOMEXECUTABLERUNCONFIGURATION_H
diff --git a/src/plugins/qtsupport/desktopqtversion.h b/src/plugins/qtsupport/desktopqtversion.h
index 9aff38fe53..9ce26f74c5 100644
--- a/src/plugins/qtsupport/desktopqtversion.h
+++ b/src/plugins/qtsupport/desktopqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESKTOPQTVERSION_H
-#define DESKTOPQTVERSION_H
+#pragma once
 
 #include "baseqtversion.h"
 
@@ -52,5 +51,3 @@ public:
 
 } // Internal
 } // QtSupport
-
-#endif // DESKTOPQTVERSION_H
diff --git a/src/plugins/qtsupport/desktopqtversionfactory.h b/src/plugins/qtsupport/desktopqtversionfactory.h
index 332498eb4d..6c29ceb886 100644
--- a/src/plugins/qtsupport/desktopqtversionfactory.h
+++ b/src/plugins/qtsupport/desktopqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DESKTOPQTVERSIONFACTORY_H
-#define DESKTOPQTVERSIONFACTORY_H
+#pragma once
 
 #include "qtversionfactory.h"
 
@@ -46,5 +45,3 @@ public:
 
 } // Internal
 } // QtSupport
-
-#endif // DESKTOPQTVERSIONFACTORY_H
diff --git a/src/plugins/qtsupport/exampleslistmodel.h b/src/plugins/qtsupport/exampleslistmodel.h
index 228aafc676..1c25b3a642 100644
--- a/src/plugins/qtsupport/exampleslistmodel.h
+++ b/src/plugins/qtsupport/exampleslistmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EXAMPLESLISTMODEL_H
-#define EXAMPLESLISTMODEL_H
+#pragma once
 
 #include <QAbstractListModel>
 #include <QSortFilterProxyModel>
@@ -236,7 +235,3 @@ private:
 
 } // namespace Internal
 } // namespace QtSupport
-
-#endif // EXAMPLESLISTMODEL_H
-
-
diff --git a/src/plugins/qtsupport/gettingstartedwelcomepage.h b/src/plugins/qtsupport/gettingstartedwelcomepage.h
index 72a75634bf..689e75fb4a 100644
--- a/src/plugins/qtsupport/gettingstartedwelcomepage.h
+++ b/src/plugins/qtsupport/gettingstartedwelcomepage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GETTINGSTARTEDWELCOMEPAGE_H
-#define GETTINGSTARTEDWELCOMEPAGE_H
+#pragma once
 
 #include <coreplugin/iwelcomepage.h>
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace QtSupport
-
-#endif // GETTINGSTARTEDWELCOMEPAGE_H
diff --git a/src/plugins/qtsupport/profilereader.h b/src/plugins/qtsupport/profilereader.h
index 890463bd73..9c750c60b9 100644
--- a/src/plugins/qtsupport/profilereader.h
+++ b/src/plugins/qtsupport/profilereader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROFILEREADER_H
-#define PROFILEREADER_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -113,5 +112,3 @@ private:
 };
 
 } // namespace QtSupport
-
-#endif // PROFILEREADER_H
diff --git a/src/plugins/qtsupport/qmldumptool.h b/src/plugins/qtsupport/qmldumptool.h
index 6905563ac9..a3568475cc 100644
--- a/src/plugins/qtsupport/qmldumptool.h
+++ b/src/plugins/qtsupport/qmldumptool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLDUMPTOOL_H
-#define QMLDUMPTOOL_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -52,5 +51,3 @@ public:
 };
 
 } // namespace
-
-#endif // QMLDUMPTOOL_H
diff --git a/src/plugins/qtsupport/qtconfigwidget.h b/src/plugins/qtsupport/qtconfigwidget.h
index d81f95c35d..1518463829 100644
--- a/src/plugins/qtsupport/qtconfigwidget.h
+++ b/src/plugins/qtsupport/qtconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTCONFIGWIDGET_H
-#define QTCONFIGWIDGET_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -41,5 +40,3 @@ signals:
     void changed();
 };
 } // namespace QtSupport
-
-#endif // QTCONFIGWIDGET_H
diff --git a/src/plugins/qtsupport/qtkitconfigwidget.h b/src/plugins/qtsupport/qtkitconfigwidget.h
index 9035b2b86e..8ab1a950a9 100644
--- a/src/plugins/qtsupport/qtkitconfigwidget.h
+++ b/src/plugins/qtsupport/qtkitconfigwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTSUPPORT_QTKITCONFIGWIDGET_H
-#define QTSUPPORT_QTKITCONFIGWIDGET_H
+#pragma once
 
 #include <projectexplorer/kitconfigwidget.h>
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Debugger
-
-#endif // QTSUPPORT_QTYSTEMCONFIGWIDGET_H
diff --git a/src/plugins/qtsupport/qtkitinformation.h b/src/plugins/qtsupport/qtkitinformation.h
index 2dd7ecc55a..2dd08ca4fd 100644
--- a/src/plugins/qtsupport/qtkitinformation.h
+++ b/src/plugins/qtsupport/qtkitinformation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTSUPPORT_QTKITINFORMATION_H
-#define QTSUPPORT_QTKITINFORMATION_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -80,5 +79,3 @@ private slots:
 };
 
 } // namespace QtSupport
-
-#endif // QTSUPPORT_QTKITINFORMATION_H
diff --git a/src/plugins/qtsupport/qtoptionspage.h b/src/plugins/qtsupport/qtoptionspage.h
index 710f5f37ae..99c3804a7e 100644
--- a/src/plugins/qtsupport/qtoptionspage.h
+++ b/src/plugins/qtsupport/qtoptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTOPTIONSPAGE_H
-#define QTOPTIONSPAGE_H
+#pragma once
 
 #include <coreplugin/dialogs/ioptionspage.h>
 #include <utils/fileutils.h>
@@ -141,6 +140,3 @@ private:
 
 } //namespace Internal
 } //namespace QtSupport
-
-
-#endif // QTOPTIONSPAGE_H
diff --git a/src/plugins/qtsupport/qtoutputformatter.h b/src/plugins/qtsupport/qtoutputformatter.h
index 3c0daaaef6..0d184ad8d8 100644
--- a/src/plugins/qtsupport/qtoutputformatter.h
+++ b/src/plugins/qtsupport/qtoutputformatter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTOUTPUTFORMATTER_H
-#define QTOUTPUTFORMATTER_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -83,5 +82,3 @@ private:
 
 
 } // namespace QtSupport
-
-#endif // QTOUTPUTFORMATTER_H
diff --git a/src/plugins/qtsupport/qtparser.h b/src/plugins/qtsupport/qtparser.h
index 20bfff9293..91b74a4aaa 100644
--- a/src/plugins/qtsupport/qtparser.h
+++ b/src/plugins/qtsupport/qtparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTPARSER_H
-#define QTPARSER_H
+#pragma once
 
 #include "qtsupport_global.h"
 #include <projectexplorer/ioutputparser.h>
@@ -47,5 +46,3 @@ private:
 };
 
 } // namespace ProjectExplorer
-
-#endif // QTPARSER_H
diff --git a/src/plugins/qtsupport/qtsupport_global.h b/src/plugins/qtsupport/qtsupport_global.h
index fec90a4c85..993bfcdb08 100644
--- a/src/plugins/qtsupport/qtsupport_global.h
+++ b/src/plugins/qtsupport/qtsupport_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTSUPPORT_GLOBAL_H
-#define QTSUPPORT_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define QTSUPPORT_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif
diff --git a/src/plugins/qtsupport/qtsupportconstants.h b/src/plugins/qtsupport/qtsupportconstants.h
index 551e201c2e..e9c0c61005 100644
--- a/src/plugins/qtsupport/qtsupportconstants.h
+++ b/src/plugins/qtsupport/qtsupportconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTSUPPORTCONSTANTS_H
-#define QTSUPPORTCONSTANTS_H
+#pragma once
 
 namespace QtSupport {
 namespace Constants {
@@ -64,5 +63,3 @@ const char ICON_QT_PROJECT[] = ":/qtsupport/images/qt_project.png";
 
 } // namepsace Constants
 } // namepsace QtSupport
-
-#endif // QTSUPPORTCONSTANTS_H
diff --git a/src/plugins/qtsupport/qtsupportplugin.h b/src/plugins/qtsupport/qtsupportplugin.h
index d8f9247143..e62791533b 100644
--- a/src/plugins/qtsupport/qtsupportplugin.h
+++ b/src/plugins/qtsupport/qtsupportplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTSUPPORTPLUGIN_H
-#define QTSUPPORTPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -56,5 +55,3 @@ private slots:
 
 } // namespace Internal
 } // namespace QtSupport
-
-#endif // QTSUPPORTPLUGIN_H
diff --git a/src/plugins/qtsupport/qtversionfactory.h b/src/plugins/qtsupport/qtversionfactory.h
index e2c5ebc3c0..d789717408 100644
--- a/src/plugins/qtsupport/qtversionfactory.h
+++ b/src/plugins/qtsupport/qtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTVERSIONFACTORY_H
-#define QTVERSIONFACTORY_H
+#pragma once
 
 #include "qtsupport_global.h"
 
@@ -63,5 +62,3 @@ public:
 };
 
 } // namespace QtSupport
-
-#endif // QTVERSIONFACTORY_H
diff --git a/src/plugins/qtsupport/qtversionmanager.h b/src/plugins/qtsupport/qtversionmanager.h
index 6333083878..eedbcc0823 100644
--- a/src/plugins/qtsupport/qtversionmanager.h
+++ b/src/plugins/qtsupport/qtversionmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTVERSIONMANAGER_H
-#define QTVERSIONMANAGER_H
+#pragma once
 
 #include "qtsupport_global.h"
 #include "baseqtversion.h"
@@ -86,5 +85,3 @@ private:
 };
 
 } // namespace QtSupport
-
-#endif // QTVERSIONMANAGER_H
diff --git a/src/plugins/qtsupport/screenshotcropper.h b/src/plugins/qtsupport/screenshotcropper.h
index 75508538d9..5fb493bc7d 100644
--- a/src/plugins/qtsupport/screenshotcropper.h
+++ b/src/plugins/qtsupport/screenshotcropper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SCREENSHOTCROPPER_H
-#define SCREENSHOTCROPPER_H
+#pragma once
 
 #include <QMap>
 #include <QRect>
@@ -43,5 +42,3 @@ public:
 
 } // namespace Internal
 } // namespace QtSupport
-
-#endif // SCREENSHOTCROPPER_H
diff --git a/src/plugins/qtsupport/uicgenerator.h b/src/plugins/qtsupport/uicgenerator.h
index c7ce3d58c4..b0253eb73c 100644
--- a/src/plugins/qtsupport/uicgenerator.h
+++ b/src/plugins/qtsupport/uicgenerator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UICGENERATOR_H
-#define UICGENERATOR_H
+#pragma once
 
 #include <projectexplorer/extracompiler.h>
 #include <utils/fileutils.h>
@@ -62,4 +61,3 @@ public:
 };
 
 } // QtSupport
-#endif // UICGENERATOR_H
diff --git a/src/plugins/qtsupport/winceqtversion.h b/src/plugins/qtsupport/winceqtversion.h
index 954202c0c7..42ff5bd749 100644
--- a/src/plugins/qtsupport/winceqtversion.h
+++ b/src/plugins/qtsupport/winceqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINCEQTVERSION_H
-#define WINCEQTVERSION_H
+#pragma once
 
 #include "baseqtversion.h"
 
@@ -56,5 +55,3 @@ private:
 
 } // Internal
 } // QtSupport
-
-#endif // WINCEQTVERSION_H
diff --git a/src/plugins/qtsupport/winceqtversionfactory.h b/src/plugins/qtsupport/winceqtversionfactory.h
index 93937c36ac..0199f28ab6 100644
--- a/src/plugins/qtsupport/winceqtversionfactory.h
+++ b/src/plugins/qtsupport/winceqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINCEQTVERSIONFACTORY_H
-#define WINCEQTVERSIONFACTORY_H
+#pragma once
 
 #include "qtversionfactory.h"
 
@@ -49,5 +48,3 @@ public:
 
 } // Internal
 } // QtSupport
-
-#endif // WINCEQTVERSIONFACTORY_H
diff --git a/src/plugins/remotelinux/abstractpackagingstep.h b/src/plugins/remotelinux/abstractpackagingstep.h
index fbf8575d51..5b3dfb9cc0 100644
--- a/src/plugins/remotelinux/abstractpackagingstep.h
+++ b/src/plugins/remotelinux/abstractpackagingstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTPACKAGINGSTEP_H
-#define ABSTRACTPACKAGINGSTEP_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -77,5 +76,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // ABSTRACTPACKAGINGSTEP_H
diff --git a/src/plugins/remotelinux/abstractremotelinuxdeployservice.h b/src/plugins/remotelinux/abstractremotelinuxdeployservice.h
index d21f9e25d7..769d572ac2 100644
--- a/src/plugins/remotelinux/abstractremotelinuxdeployservice.h
+++ b/src/plugins/remotelinux/abstractremotelinuxdeployservice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTREMOTELINUXDEPLOYSERVICE_H
-#define ABSTRACTREMOTELINUXDEPLOYSERVICE_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -104,5 +103,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // ABSTRACTREMOTELINUXDEPLOYSERVICE_H
diff --git a/src/plugins/remotelinux/abstractremotelinuxdeploystep.h b/src/plugins/remotelinux/abstractremotelinuxdeploystep.h
index 65534555d1..12d8fd547c 100644
--- a/src/plugins/remotelinux/abstractremotelinuxdeploystep.h
+++ b/src/plugins/remotelinux/abstractremotelinuxdeploystep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTREMOTELINUXDEPLOYSTEP_H
-#define ABSTRACTREMOTELINUXDEPLOYSTEP_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // ABSTRACTREMOTELINUXDEPLOYSTEP_H
diff --git a/src/plugins/remotelinux/abstractremotelinuxrunsupport.h b/src/plugins/remotelinux/abstractremotelinuxrunsupport.h
index 7db1a6f7a1..e2e4611d03 100644
--- a/src/plugins/remotelinux/abstractremotelinuxrunsupport.h
+++ b/src/plugins/remotelinux/abstractremotelinuxrunsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTREMOTELINUXRUNSUPPORT_H
-#define ABSTRACTREMOTELINUXRUNSUPPORT_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -94,5 +93,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // ABSTRACTREMOTELINUXRUNSUPPORT_H
diff --git a/src/plugins/remotelinux/abstractuploadandinstallpackageservice.h b/src/plugins/remotelinux/abstractuploadandinstallpackageservice.h
index c24349a883..d646323639 100644
--- a/src/plugins/remotelinux/abstractuploadandinstallpackageservice.h
+++ b/src/plugins/remotelinux/abstractuploadandinstallpackageservice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ABSTRACTUPLOADANDINSTALLPACKAGESERVICE_H
-#define ABSTRACTUPLOADANDINSTALLPACKAGESERVICE_H
+#pragma once
 
 #include "abstractremotelinuxdeployservice.h"
 #include "remotelinux_export.h"
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // ABSTRACTUPLOADANDINSTALLPACKAGESERVICE_H
diff --git a/src/plugins/remotelinux/embeddedlinuxqtversion.h b/src/plugins/remotelinux/embeddedlinuxqtversion.h
index 72520dd712..6bad126f28 100644
--- a/src/plugins/remotelinux/embeddedlinuxqtversion.h
+++ b/src/plugins/remotelinux/embeddedlinuxqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EMBEDDEDLINUXQTVERSION_H
-#define EMBEDDEDLINUXQTVERSION_H
+#pragma once
 
 #include <qtsupport/baseqtversion.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // EMBEDDEDLINUXQTVERSION_H
diff --git a/src/plugins/remotelinux/embeddedlinuxqtversionfactory.h b/src/plugins/remotelinux/embeddedlinuxqtversionfactory.h
index e6248aecb4..2c48501941 100644
--- a/src/plugins/remotelinux/embeddedlinuxqtversionfactory.h
+++ b/src/plugins/remotelinux/embeddedlinuxqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef EMBEDDEDLINUXQTVERSIONFACTORY_H
-#define EMBEDDEDLINUXQTVERSIONFACTORY_H
+#pragma once
 
 #include <qtsupport/qtversionfactory.h>
 
@@ -48,5 +47,3 @@ public:
 
 } // Internal
 } // RemoteLinux
-
-#endif // EMBEDDEDLINUXQTVERSIONFACTORY_H
diff --git a/src/plugins/remotelinux/genericdirectuploadservice.h b/src/plugins/remotelinux/genericdirectuploadservice.h
index 1b9b63c179..a015bc6500 100644
--- a/src/plugins/remotelinux/genericdirectuploadservice.h
+++ b/src/plugins/remotelinux/genericdirectuploadservice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GERNERICDIRECTDEVICEUPLOADSERVICE_H
-#define GERNERICDIRECTDEVICEUPLOADSERVICE_H
+#pragma once
 
 #include "abstractremotelinuxdeployservice.h"
 #include "remotelinux_export.h"
@@ -79,5 +78,3 @@ private:
 };
 
 } //namespace RemoteLinux
-
-#endif // GERNERICDIRECTDEVICEUPLOADSERVICE_H
diff --git a/src/plugins/remotelinux/genericdirectuploadstep.h b/src/plugins/remotelinux/genericdirectuploadstep.h
index 0169ca1136..2ed99b2c18 100644
--- a/src/plugins/remotelinux/genericdirectuploadstep.h
+++ b/src/plugins/remotelinux/genericdirectuploadstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIRECTUPLOADSTEP_H
-#define DIRECTUPLOADSTEP_H
+#pragma once
 
 #include "abstractremotelinuxdeploystep.h"
 #include "genericdirectuploadservice.h"
@@ -65,5 +64,3 @@ private:
 };
 
 } //namespace RemoteLinux
-
-#endif // DIRECTUPLOADSTEP_H
diff --git a/src/plugins/remotelinux/genericlinuxdeviceconfigurationfactory.h b/src/plugins/remotelinux/genericlinuxdeviceconfigurationfactory.h
index a82e1de00d..e00bbebf56 100644
--- a/src/plugins/remotelinux/genericlinuxdeviceconfigurationfactory.h
+++ b/src/plugins/remotelinux/genericlinuxdeviceconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERICLINUXDEVICECONFIGURATIONFACTORY_H
-#define GENERICLINUXDEVICECONFIGURATIONFACTORY_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -49,5 +48,3 @@ public:
 };
 
 } // namespace RemoteLinux
-
-#endif // GENERICLINUXDEVICECONFIGURATIONFACTORY_H
diff --git a/src/plugins/remotelinux/genericlinuxdeviceconfigurationwidget.h b/src/plugins/remotelinux/genericlinuxdeviceconfigurationwidget.h
index a45b8f6b16..5017439cfe 100644
--- a/src/plugins/remotelinux/genericlinuxdeviceconfigurationwidget.h
+++ b/src/plugins/remotelinux/genericlinuxdeviceconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUX_GENERICLINUXDEVICECONFIGURATIONWIDGET_H
-#define REMOTELINUX_GENERICLINUXDEVICECONFIGURATIONWIDGET_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicewidget.h>
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUX_GENERICLINUXDEVICECONFIGURATIONWIDGET_H
diff --git a/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizard.h b/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizard.h
index 64a3581515..5db089bb6a 100644
--- a/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizard.h
+++ b/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERICLINUXDEVICECONFIGURATIONWIZARD_H
-#define GENERICLINUXDEVICECONFIGURATIONWIZARD_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -49,5 +48,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // GENERICLINUXDEVICECONFIGURATIONWIZARD_H
diff --git a/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizardpages.h b/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizardpages.h
index 93af5921d0..88e5ea315e 100644
--- a/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizardpages.h
+++ b/src/plugins/remotelinux/genericlinuxdeviceconfigurationwizardpages.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERICLINUXDEVICECONFIGURATIONWIZARDPAGES_H
-#define GENERICLINUXDEVICECONFIGURATIONWIZARDPAGES_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -85,5 +84,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // GENERICLINUXDEVICECONFIGURATIONWIZARDPAGES_H
diff --git a/src/plugins/remotelinux/genericremotelinuxdeploystepfactory.h b/src/plugins/remotelinux/genericremotelinuxdeploystepfactory.h
index 812a2c9e91..939f071b1f 100644
--- a/src/plugins/remotelinux/genericremotelinuxdeploystepfactory.h
+++ b/src/plugins/remotelinux/genericremotelinuxdeploystepfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERICREMOTELINUXDEPLOYSTEPFACTORY_H
-#define GENERICREMOTELINUXDEPLOYSTEPFACTORY_H
+#pragma once
 
 #include <projectexplorer/buildstep.h>
 
@@ -52,5 +51,3 @@ public:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // GENERICREMOTELINUXDEPLOYSTEPFACTORY_H
diff --git a/src/plugins/remotelinux/linuxdevice.h b/src/plugins/remotelinux/linuxdevice.h
index 7a5f752024..c834bfa519 100644
--- a/src/plugins/remotelinux/linuxdevice.h
+++ b/src/plugins/remotelinux/linuxdevice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LINUXDEVICECONFIGURATION_H
-#define LINUXDEVICECONFIGURATION_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // LINUXDEVICECONFIGURATION_H
diff --git a/src/plugins/remotelinux/linuxdeviceprocess.h b/src/plugins/remotelinux/linuxdeviceprocess.h
index 8f1e2acfcb..9948d6ad07 100644
--- a/src/plugins/remotelinux/linuxdeviceprocess.h
+++ b/src/plugins/remotelinux/linuxdeviceprocess.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTC_LINUXDEVICEPROCESS_H
-#define QTC_LINUXDEVICEPROCESS_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // Include guard.
diff --git a/src/plugins/remotelinux/linuxdevicetester.h b/src/plugins/remotelinux/linuxdevicetester.h
index bf055e3127..e06e4d5448 100644
--- a/src/plugins/remotelinux/linuxdevicetester.h
+++ b/src/plugins/remotelinux/linuxdevicetester.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LINUXDEVICETESTER_H
-#define LINUXDEVICETESTER_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // LINUXDEVICETESTER_H
diff --git a/src/plugins/remotelinux/packageuploader.h b/src/plugins/remotelinux/packageuploader.h
index 74e3b514a6..dce0d864ba 100644
--- a/src/plugins/remotelinux/packageuploader.h
+++ b/src/plugins/remotelinux/packageuploader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PACKAGEUPLOADER_H
-#define PACKAGEUPLOADER_H
+#pragma once
 
 #include <QObject>
 #include <QSharedPointer>
@@ -77,5 +76,3 @@ private:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // PACKAGEUPLOADER_H
diff --git a/src/plugins/remotelinux/publickeydeploymentdialog.h b/src/plugins/remotelinux/publickeydeploymentdialog.h
index 2c0b7a1278..94e5c4b3f4 100644
--- a/src/plugins/remotelinux/publickeydeploymentdialog.h
+++ b/src/plugins/remotelinux/publickeydeploymentdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PUBLICKEYDEPLOYMENTDIALOG_H
-#define PUBLICKEYDEPLOYMENTDIALOG_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // PUBLICKEYDEPLOYMENTDIALOG_H
diff --git a/src/plugins/remotelinux/remotelinux_constants.h b/src/plugins/remotelinux/remotelinux_constants.h
index 37914faf30..43bd85fe87 100644
--- a/src/plugins/remotelinux/remotelinux_constants.h
+++ b/src/plugins/remotelinux/remotelinux_constants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUX_CONSTANTS_H
-#define REMOTELINUX_CONSTANTS_H
+#pragma once
 
 namespace RemoteLinux {
 namespace Constants {
@@ -37,5 +36,3 @@ const char EMBEDDED_LINUX_QT[] = "RemoteLinux.EmbeddedLinuxQt";
 
 } // Constants
 } // RemoteLinux
-
-#endif // REMOTELINUX_CONSTANTS_H
diff --git a/src/plugins/remotelinux/remotelinux_export.h b/src/plugins/remotelinux/remotelinux_export.h
index 46b3b17c0a..e9df11a1f0 100644
--- a/src/plugins/remotelinux/remotelinux_export.h
+++ b/src/plugins/remotelinux/remotelinux_export.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTE_LINUX_EXPORT_H
-#define REMOTE_LINUX_EXPORT_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define REMOTELINUX_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // REMOTE_LINUX_EXPORT_H
diff --git a/src/plugins/remotelinux/remotelinuxanalyzesupport.h b/src/plugins/remotelinux/remotelinuxanalyzesupport.h
index de083d38bc..ca93bcdda5 100644
--- a/src/plugins/remotelinux/remotelinuxanalyzesupport.h
+++ b/src/plugins/remotelinux/remotelinuxanalyzesupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXANALYZESUPPORT_H
-#define REMOTELINUXANALYZESUPPORT_H
+#pragma once
 
 #include "abstractremotelinuxrunsupport.h"
 
@@ -71,5 +70,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXANALYZESUPPORT_H
diff --git a/src/plugins/remotelinux/remotelinuxcheckforfreediskspaceservice.h b/src/plugins/remotelinux/remotelinuxcheckforfreediskspaceservice.h
index 0c016c0a22..945cf564e5 100644
--- a/src/plugins/remotelinux/remotelinuxcheckforfreediskspaceservice.h
+++ b/src/plugins/remotelinux/remotelinuxcheckforfreediskspaceservice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXCHECKFORFREEDISKSPACESERVICE_H
-#define REMOTELINUXCHECKFORFREEDISKSPACESERVICE_H
+#pragma once
 
 #include "abstractremotelinuxdeployservice.h"
 
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXCHECKFORFREEDISKSPACESERVICE_H
diff --git a/src/plugins/remotelinux/remotelinuxcheckforfreediskspacestep.h b/src/plugins/remotelinux/remotelinuxcheckforfreediskspacestep.h
index 1e78f5ba76..102e494be9 100644
--- a/src/plugins/remotelinux/remotelinuxcheckforfreediskspacestep.h
+++ b/src/plugins/remotelinux/remotelinuxcheckforfreediskspacestep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXCHECKFORFREEDISKSPACESTEP_H
-#define REMOTELINUXCHECKFORFREEDISKSPACESTEP_H
+#pragma once
 
 #include "abstractremotelinuxdeploystep.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXCHECKFORFREEDISKSPACESTEP_H
diff --git a/src/plugins/remotelinux/remotelinuxcustomcommanddeploymentstep.h b/src/plugins/remotelinux/remotelinuxcustomcommanddeploymentstep.h
index 7bfdc70af4..fd2ca29e87 100644
--- a/src/plugins/remotelinux/remotelinuxcustomcommanddeploymentstep.h
+++ b/src/plugins/remotelinux/remotelinuxcustomcommanddeploymentstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXCUSTOMCOMMANDDEPLOYMENTSTEP_H
-#define REMOTELINUXCUSTOMCOMMANDDEPLOYMENTSTEP_H
+#pragma once
 
 #include "abstractremotelinuxdeploystep.h"
 #include "remotelinuxcustomcommanddeployservice.h"
@@ -87,5 +86,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXCUSTOMCOMMANDDEPLOYMENTSTEP_H
diff --git a/src/plugins/remotelinux/remotelinuxcustomcommanddeployservice.h b/src/plugins/remotelinux/remotelinuxcustomcommanddeployservice.h
index 5c17efd5f1..ddb84698d9 100644
--- a/src/plugins/remotelinux/remotelinuxcustomcommanddeployservice.h
+++ b/src/plugins/remotelinux/remotelinuxcustomcommanddeployservice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXCUSTOMCOMMANDDEPLOYSERVICE_H
-#define REMOTELINUXCUSTOMCOMMANDDEPLOYSERVICE_H
+#pragma once
 
 #include "abstractremotelinuxdeployservice.h"
 
@@ -60,5 +59,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXCUSTOMCOMMANDDEPLOYSERVICE_H
diff --git a/src/plugins/remotelinux/remotelinuxcustomrunconfiguration.h b/src/plugins/remotelinux/remotelinuxcustomrunconfiguration.h
index 2bd4ebcbc4..be97dad96c 100644
--- a/src/plugins/remotelinux/remotelinuxcustomrunconfiguration.h
+++ b/src/plugins/remotelinux/remotelinuxcustomrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXCUSTOMRUNCONFIGURATION_H
-#define REMOTELINUXCUSTOMRUNCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // Include guard.
diff --git a/src/plugins/remotelinux/remotelinuxdebugsupport.h b/src/plugins/remotelinux/remotelinuxdebugsupport.h
index 390cac3379..a9f03f42de 100644
--- a/src/plugins/remotelinux/remotelinuxdebugsupport.h
+++ b/src/plugins/remotelinux/remotelinuxdebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXDEBUGSUPPORT_H
-#define REMOTELINUXDEBUGSUPPORT_H
+#pragma once
 
 #include "abstractremotelinuxrunsupport.h"
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXDEBUGSUPPORT_H
diff --git a/src/plugins/remotelinux/remotelinuxdeployconfiguration.h b/src/plugins/remotelinux/remotelinuxdeployconfiguration.h
index eada2371a2..409113ee2a 100644
--- a/src/plugins/remotelinux/remotelinuxdeployconfiguration.h
+++ b/src/plugins/remotelinux/remotelinuxdeployconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXDEPLOYCONFIGURATION_H
-#define REMOTELINUXDEPLOYCONFIGURATION_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -64,5 +63,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXDEPLOYCONFIGURATION_H
diff --git a/src/plugins/remotelinux/remotelinuxdeployconfigurationfactory.h b/src/plugins/remotelinux/remotelinuxdeployconfigurationfactory.h
index 485d4bd279..762d981f2a 100644
--- a/src/plugins/remotelinux/remotelinuxdeployconfigurationfactory.h
+++ b/src/plugins/remotelinux/remotelinuxdeployconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXDEPLOYCONFIGURATIONFACTORY_H
-#define REMOTELINUXDEPLOYCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/deployconfiguration.h>
 
@@ -53,5 +52,3 @@ public:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXDEPLOYCONFIGURATIONFACTORY_H
diff --git a/src/plugins/remotelinux/remotelinuxenvironmentaspect.h b/src/plugins/remotelinux/remotelinuxenvironmentaspect.h
index 5e431afec6..02a4cbf119 100644
--- a/src/plugins/remotelinux/remotelinuxenvironmentaspect.h
+++ b/src/plugins/remotelinux/remotelinuxenvironmentaspect.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXENVIRONMENTASPECT_H
-#define REMOTELINUXENVIRONMENTASPECT_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXENVIRONMENTASPECT_H
diff --git a/src/plugins/remotelinux/remotelinuxenvironmentaspectwidget.h b/src/plugins/remotelinux/remotelinuxenvironmentaspectwidget.h
index f7d6c7e081..92bfe29628 100644
--- a/src/plugins/remotelinux/remotelinuxenvironmentaspectwidget.h
+++ b/src/plugins/remotelinux/remotelinuxenvironmentaspectwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXENVIRONMENTASPECTWIDGET_H
-#define REMOTELINUXENVIRONMENTASPECTWIDGET_H
+#pragma once
 
 #include "remotelinuxenvironmentaspect.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXENVIRONMENTASPECTWIDGET_H
diff --git a/src/plugins/remotelinux/remotelinuxenvironmentreader.h b/src/plugins/remotelinux/remotelinuxenvironmentreader.h
index d1fd34e469..99db24ee08 100644
--- a/src/plugins/remotelinux/remotelinuxenvironmentreader.h
+++ b/src/plugins/remotelinux/remotelinuxenvironmentreader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXENVIRONMENTREADER_H
-#define REMOTELINUXENVIRONMENTREADER_H
+#pragma once
 
 #include <utils/environment.h>
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif  // REMOTELINUXENVIRONMENTREADER_H
diff --git a/src/plugins/remotelinux/remotelinuxpackageinstaller.h b/src/plugins/remotelinux/remotelinuxpackageinstaller.h
index 53533247ca..aa4a836df1 100644
--- a/src/plugins/remotelinux/remotelinuxpackageinstaller.h
+++ b/src/plugins/remotelinux/remotelinuxpackageinstaller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXPACKAGEINSTALLER_H
-#define REMOTELINUXPACKAGEINSTALLER_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -85,5 +84,3 @@ private:
 
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXPACKAGEINSTALLER_H
diff --git a/src/plugins/remotelinux/remotelinuxplugin.h b/src/plugins/remotelinux/remotelinuxplugin.h
index 83b1161129..aa35482d2f 100644
--- a/src/plugins/remotelinux/remotelinuxplugin.h
+++ b/src/plugins/remotelinux/remotelinuxplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXPLUGIN_H
-#define REMOTELINUXPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -46,5 +45,3 @@ public:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXPLUGIN_H
diff --git a/src/plugins/remotelinux/remotelinuxrunconfiguration.h b/src/plugins/remotelinux/remotelinuxrunconfiguration.h
index 2b16107527..ab23002b8f 100644
--- a/src/plugins/remotelinux/remotelinuxrunconfiguration.h
+++ b/src/plugins/remotelinux/remotelinuxrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXRUNCONFIGURATION_H
-#define REMOTELINUXRUNCONFIGURATION_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -103,5 +102,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXRUNCONFIGURATION_H
diff --git a/src/plugins/remotelinux/remotelinuxrunconfigurationfactory.h b/src/plugins/remotelinux/remotelinuxrunconfigurationfactory.h
index a6ed022327..88cbee3d28 100644
--- a/src/plugins/remotelinux/remotelinuxrunconfigurationfactory.h
+++ b/src/plugins/remotelinux/remotelinuxrunconfigurationfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXRUNCONFIGURATIONFACTORY_H
-#define REMOTELINUXRUNCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -59,5 +58,3 @@ private:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXRUNCONFIGURATIONFACTORY_H
diff --git a/src/plugins/remotelinux/remotelinuxrunconfigurationwidget.h b/src/plugins/remotelinux/remotelinuxrunconfigurationwidget.h
index e8544bad76..18ae8ef2b3 100644
--- a/src/plugins/remotelinux/remotelinuxrunconfigurationwidget.h
+++ b/src/plugins/remotelinux/remotelinuxrunconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXRUNCONFIGURATIONWIDGET_H
-#define REMOTELINUXRUNCONFIGURATIONWIDGET_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXRUNCONFIGURATIONWIDGET_H
diff --git a/src/plugins/remotelinux/remotelinuxruncontrol.h b/src/plugins/remotelinux/remotelinuxruncontrol.h
index 2f5fe92551..b8b680b628 100644
--- a/src/plugins/remotelinux/remotelinuxruncontrol.h
+++ b/src/plugins/remotelinux/remotelinuxruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXRUNCONTROL_H
-#define REMOTELINUXRUNCONTROL_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXRUNCONTROL_H
diff --git a/src/plugins/remotelinux/remotelinuxruncontrolfactory.h b/src/plugins/remotelinux/remotelinuxruncontrolfactory.h
index effffcc235..6256fa80a8 100644
--- a/src/plugins/remotelinux/remotelinuxruncontrolfactory.h
+++ b/src/plugins/remotelinux/remotelinuxruncontrolfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXRUNCONTROLFACTORY_H
-#define REMOTELINUXRUNCONTROLFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -45,5 +44,3 @@ public:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXRUNCONTROLFACTORY_H
diff --git a/src/plugins/remotelinux/remotelinuxsignaloperation.h b/src/plugins/remotelinux/remotelinuxsignaloperation.h
index 5bd32df836..e52c15cf41 100644
--- a/src/plugins/remotelinux/remotelinuxsignaloperation.h
+++ b/src/plugins/remotelinux/remotelinuxsignaloperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXSIGNALOPERATION_H
-#define REMOTELINUXSIGNALOPERATION_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -68,5 +67,3 @@ private:
 };
 
 }
-
-#endif // REMOTELINUXSIGNALOPERATION_H
diff --git a/src/plugins/remotelinux/remotelinuxutils.h b/src/plugins/remotelinux/remotelinuxutils.h
index 69332d8162..57aec1d442 100644
--- a/src/plugins/remotelinux/remotelinuxutils.h
+++ b/src/plugins/remotelinux/remotelinuxutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REMOTELINUXUTILS_H
-#define REMOTELINUXUTILS_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -36,5 +35,3 @@ public:
 };
 
 } // namespace RemoteLinux
-
-#endif // REMOTELINUXUTILS_H
diff --git a/src/plugins/remotelinux/sshkeydeployer.h b/src/plugins/remotelinux/sshkeydeployer.h
index d671e94d87..8da128006a 100644
--- a/src/plugins/remotelinux/sshkeydeployer.h
+++ b/src/plugins/remotelinux/sshkeydeployer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SSHKEYDEPLOYER_H
-#define SSHKEYDEPLOYER_H
+#pragma once
 
 #include "remotelinux_export.h"
 
@@ -62,5 +61,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // SSHKEYDEPLOYER_H
diff --git a/src/plugins/remotelinux/tarpackagecreationstep.h b/src/plugins/remotelinux/tarpackagecreationstep.h
index d0d313100f..cef63817b1 100644
--- a/src/plugins/remotelinux/tarpackagecreationstep.h
+++ b/src/plugins/remotelinux/tarpackagecreationstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TARPACKAGECREATIONSTEP_H
-#define TARPACKAGECREATIONSTEP_H
+#pragma once
 
 #include "abstractpackagingstep.h"
 #include "remotelinux_export.h"
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace RemoteLinux
-
-#endif // TARPACKAGECREATIONSTEP_H
diff --git a/src/plugins/remotelinux/typespecificdeviceconfigurationlistmodel.h b/src/plugins/remotelinux/typespecificdeviceconfigurationlistmodel.h
index 74f445378d..69ded3a6d6 100644
--- a/src/plugins/remotelinux/typespecificdeviceconfigurationlistmodel.h
+++ b/src/plugins/remotelinux/typespecificdeviceconfigurationlistmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TYPESPECIFICDEVICECONFIGURATIONLISTMODEL_H
-#define TYPESPECIFICDEVICECONFIGURATIONLISTMODEL_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevice.h>
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace RemoteLinux
-
-#endif // TYPESPECIFICDEVICECONFIGURATIONLISTMODEL_H
diff --git a/src/plugins/remotelinux/uploadandinstalltarpackagestep.h b/src/plugins/remotelinux/uploadandinstalltarpackagestep.h
index 846bbf21bc..5ac669de4a 100644
--- a/src/plugins/remotelinux/uploadandinstalltarpackagestep.h
+++ b/src/plugins/remotelinux/uploadandinstalltarpackagestep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UPLOADANDINSTALLTARPACKAGESTEP_H
-#define UPLOADANDINSTALLTARPACKAGESTEP_H
+#pragma once
 
 #include "abstractuploadandinstallpackageservice.h"
 #include "abstractremotelinuxdeploystep.h"
@@ -74,5 +73,3 @@ private:
 };
 
 } //namespace RemoteLinux
-
-#endif // UPLOADANDINSTALLTARPACKAGESTEP_H
diff --git a/src/plugins/resourceeditor/qrceditor/qrceditor.h b/src/plugins/resourceeditor/qrceditor/qrceditor.h
index 235758368b..512d35a2ac 100644
--- a/src/plugins/resourceeditor/qrceditor/qrceditor.h
+++ b/src/plugins/resourceeditor/qrceditor/qrceditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QRCEDITOR_H
-#define QRCEDITOR_H
+#pragma once
 
 #include "ui_qrceditor.h"
 #include "resourceview.h"
@@ -95,5 +94,3 @@ private:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif
diff --git a/src/plugins/resourceeditor/qrceditor/resourcefile_p.h b/src/plugins/resourceeditor/qrceditor/resourcefile_p.h
index d4b2b2827a..3e58cb4133 100644
--- a/src/plugins/resourceeditor/qrceditor/resourcefile_p.h
+++ b/src/plugins/resourceeditor/qrceditor/resourcefile_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCEFILE_P_H
-#define RESOURCEFILE_P_H
+#pragma once
 
 #include <QAbstractItemModel>
 #include <QCoreApplication>
@@ -328,5 +327,3 @@ private:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // RESOURCEFILE_P_H
diff --git a/src/plugins/resourceeditor/qrceditor/resourceview.h b/src/plugins/resourceeditor/qrceditor/resourceview.h
index ba0f0c61a3..59e4d43418 100644
--- a/src/plugins/resourceeditor/qrceditor/resourceview.h
+++ b/src/plugins/resourceeditor/qrceditor/resourceview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCEVIEW_H
-#define RESOURCEVIEW_H
+#pragma once
 
 #include "resourcefile_p.h"
 
@@ -116,5 +115,3 @@ private:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // RESOURCEVIEW_H
diff --git a/src/plugins/resourceeditor/qrceditor/test/mainwindow.h b/src/plugins/resourceeditor/qrceditor/test/mainwindow.h
index 3ffff967b8..a6e619c7e0 100644
--- a/src/plugins/resourceeditor/qrceditor/test/mainwindow.h
+++ b/src/plugins/resourceeditor/qrceditor/test/mainwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
+#pragma once
 
 #include <QMainWindow>
 
@@ -44,5 +43,3 @@ private slots:
 private:
     SharedTools::QrcEditor *m_qrcEditor;
 };
-
-#endif // MAINWINDOW_H
diff --git a/src/plugins/resourceeditor/qrceditor/undocommands_p.h b/src/plugins/resourceeditor/qrceditor/undocommands_p.h
index ea85282da4..fac2a2d05d 100644
--- a/src/plugins/resourceeditor/qrceditor/undocommands_p.h
+++ b/src/plugins/resourceeditor/qrceditor/undocommands_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UNDO_COMMANDS_H
-#define UNDO_COMMANDS_H
+#pragma once
 
 #include "resourceview.h"
 
@@ -173,5 +172,3 @@ private:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // UNDO_COMMANDS_H
diff --git a/src/plugins/resourceeditor/resource_global.h b/src/plugins/resourceeditor/resource_global.h
index ac19f427fb..7fffa85432 100644
--- a/src/plugins/resourceeditor/resource_global.h
+++ b/src/plugins/resourceeditor/resource_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOUCE_GLOBAL_H
-#define RESOUCE_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -33,5 +32,3 @@
 #else
 #  define RESOURCE_EXPORT Q_DECL_IMPORT
 #endif
-
-#endif // RESOUCE_GLOBAL_H
diff --git a/src/plugins/resourceeditor/resourceeditorconstants.h b/src/plugins/resourceeditor/resourceeditorconstants.h
index 2713320c73..b0f9b3ebf5 100644
--- a/src/plugins/resourceeditor/resourceeditorconstants.h
+++ b/src/plugins/resourceeditor/resourceeditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCEEDITOR_CONSTANTS_H
-#define RESOURCEEDITOR_CONSTANTS_H
+#pragma once
 
 namespace ResourceEditor {
 namespace Constants {
@@ -50,8 +49,5 @@ const char C_OPEN_EDITOR[] = "ResourceEditor.OpenEditor";
 const char C_COPY_PATH[] = "ResourceEditor.CopyPath";
 const char C_COPY_URL[] = "ResourceEditor.CopyUrl";
 
-
 } // namespace Constants
 } // namespace ResourceEditor
-
-#endif // RESOURCEEDITOR_CONSTANTS_H
diff --git a/src/plugins/resourceeditor/resourceeditorfactory.h b/src/plugins/resourceeditor/resourceeditorfactory.h
index 7ea0c587e4..3b954df68f 100644
--- a/src/plugins/resourceeditor/resourceeditorfactory.h
+++ b/src/plugins/resourceeditor/resourceeditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RRESOURCEEDITORFACTORY_H
-#define RRESOURCEEDITORFACTORY_H
+#pragma once
 
 #include <coreplugin/editormanager/ieditorfactory.h>
 #include <coreplugin/icontext.h>
@@ -51,5 +50,3 @@ private:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // RRESOURCEEDITORFACTORY_H
diff --git a/src/plugins/resourceeditor/resourceeditorplugin.h b/src/plugins/resourceeditor/resourceeditorplugin.h
index 4f8202f6dd..d8cb020654 100644
--- a/src/plugins/resourceeditor/resourceeditorplugin.h
+++ b/src/plugins/resourceeditor/resourceeditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCEEDITORPLUGIN_H
-#define RESOURCEEDITORPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -108,5 +107,3 @@ private:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // RESOURCEEDITORPLUGIN_H
diff --git a/src/plugins/resourceeditor/resourceeditorw.h b/src/plugins/resourceeditor/resourceeditorw.h
index 0ba85ca38e..3d8d139e3c 100644
--- a/src/plugins/resourceeditor/resourceeditorw.h
+++ b/src/plugins/resourceeditor/resourceeditorw.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCEEDITORW_H
-#define RESOURCEEDITORW_H
+#pragma once
 
 #include <coreplugin/idocument.h>
 #include <coreplugin/editormanager/ieditor.h>
@@ -127,5 +126,3 @@ public:
 
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // RESOURCEEDITORW_H
diff --git a/src/plugins/resourceeditor/resourcenode.h b/src/plugins/resourceeditor/resourcenode.h
index b6bed770bf..528f1879f5 100644
--- a/src/plugins/resourceeditor/resourcenode.h
+++ b/src/plugins/resourceeditor/resourcenode.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RESOURCENODE_H
-#define RESOURCENODE_H
+#pragma once
 
 #include "resource_global.h"
 #include <projectexplorer/projectnodes.h>
@@ -175,5 +174,3 @@ private:
 };
 } // namespace Internal
 } // namespace ResourceEditor
-
-#endif // RESOUCENODE_H
diff --git a/src/plugins/subversion/annotationhighlighter.h b/src/plugins/subversion/annotationhighlighter.h
index f9c471367c..44cbeff72f 100644
--- a/src/plugins/subversion/annotationhighlighter.h
+++ b/src/plugins/subversion/annotationhighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANNOTATIONHIGHLIGHTER_H
-#define ANNOTATIONHIGHLIGHTER_H
+#pragma once
 
 #include <vcsbase/baseannotationhighlighter.h>
 
@@ -47,5 +46,3 @@ private:
 
 } // namespace Internal
 } // namespace Subversion
-
-#endif // ANNOTATIONHIGHLIGHTER_H
diff --git a/src/plugins/subversion/settingspage.h b/src/plugins/subversion/settingspage.h
index bd81e3c9ef..afb0c6a879 100644
--- a/src/plugins/subversion/settingspage.h
+++ b/src/plugins/subversion/settingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSPAGE_H
-#define SETTINGSPAGE_H
+#pragma once
 
 #include "ui_settingspage.h"
 
@@ -66,5 +65,3 @@ public:
 
 } // namespace Subversion
 } // namespace Internal
-
-#endif  // SETTINGSPAGE_H
diff --git a/src/plugins/subversion/subversionclient.h b/src/plugins/subversion/subversionclient.h
index 604de6d415..a5e3d98277 100644
--- a/src/plugins/subversion/subversionclient.h
+++ b/src/plugins/subversion/subversionclient.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSIONCLIENT_H
-#define SUBVERSIONCLIENT_H
+#pragma once
 
 #include "subversionsettings.h"
 #include <vcsbase/vcsbaseclient.h>
@@ -85,5 +84,3 @@ private:
 
 } // namespace Internal
 } // namespace Subversion
-
-#endif // SUBVERSIONCLIENT_H
diff --git a/src/plugins/subversion/subversionconstants.h b/src/plugins/subversion/subversionconstants.h
index 60afd37a2b..5b52cbbb90 100644
--- a/src/plugins/subversion/subversionconstants.h
+++ b/src/plugins/subversion/subversionconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSION_CONSTANTS_H
-#define SUBVERSION_CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -53,5 +52,3 @@ const char DIFF_SELECTED[] = "Subversion.DiffSelectedFilesInLog";
 
 } // namespace Constants
 } // namespace Subversion
-
-#endif // SUBVERSION_CONSTANTS_H
diff --git a/src/plugins/subversion/subversioncontrol.h b/src/plugins/subversion/subversioncontrol.h
index 73c62bad28..9f244fd529 100644
--- a/src/plugins/subversion/subversioncontrol.h
+++ b/src/plugins/subversion/subversioncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSIONCONTROL_H
-#define SUBVERSIONCONTROL_H
+#pragma once
 
 #include <coreplugin/iversioncontrol.h>
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace Subversion
-
-#endif // SUBVERSIONCONTROL_H
diff --git a/src/plugins/subversion/subversioneditor.h b/src/plugins/subversion/subversioneditor.h
index 119cdb2c0f..6b2446ffde 100644
--- a/src/plugins/subversion/subversioneditor.h
+++ b/src/plugins/subversion/subversioneditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSIONEDITOR_H
-#define SUBVERSIONEDITOR_H
+#pragma once
 
 #include <vcsbase/vcsbaseeditor.h>
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace Subversion
-
-#endif // SUBVERSIONEDITOR_H
diff --git a/src/plugins/subversion/subversionplugin.h b/src/plugins/subversion/subversionplugin.h
index 9c537d77d1..f06a1a9201 100644
--- a/src/plugins/subversion/subversionplugin.h
+++ b/src/plugins/subversion/subversionplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSIONPLUGIN_H
-#define SUBVERSIONPLUGIN_H
+#pragma once
 
 #include "subversionsettings.h"
 
@@ -181,5 +180,3 @@ private:
 
 } // namespace Subversion
 } // namespace Internal
-
-#endif // SUBVERSIONPLUGIN_H
diff --git a/src/plugins/subversion/subversionsettings.h b/src/plugins/subversion/subversionsettings.h
index f2f94ef7fb..81dbeb15f8 100644
--- a/src/plugins/subversion/subversionsettings.h
+++ b/src/plugins/subversion/subversionsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSIONSETTINGS_H
-#define SUBVERSIONSETTINGS_H
+#pragma once
 
 #include <vcsbase/vcsbaseclientsettings.h>
 
@@ -50,5 +49,3 @@ protected:
 
 } // namespace Internal
 } // namespace Subversion
-
-#endif // SUBVERSIONSETTINGS_H
diff --git a/src/plugins/subversion/subversionsubmiteditor.h b/src/plugins/subversion/subversionsubmiteditor.h
index 860af1a843..27b0918cef 100644
--- a/src/plugins/subversion/subversionsubmiteditor.h
+++ b/src/plugins/subversion/subversionsubmiteditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBVERSIONSUBMITEDITOR_H
-#define SUBVERSIONSUBMITEDITOR_H
+#pragma once
 
 #include <vcsbase/vcsbasesubmiteditor.h>
 
@@ -52,5 +51,3 @@ public:
 
 } // namespace Internal
 } // namespace Subversion
-
-#endif // SUBVERSIONSUBMITEDITOR_H
diff --git a/src/plugins/tasklist/stopmonitoringhandler.h b/src/plugins/tasklist/stopmonitoringhandler.h
index af9be37ee4..b257c330c0 100644
--- a/src/plugins/tasklist/stopmonitoringhandler.h
+++ b/src/plugins/tasklist/stopmonitoringhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STOPMONITORINGHANDLER_H
-#define STOPMONITORINGHANDLER_H
+#pragma once
 
 #include <projectexplorer/itaskhandler.h>
 
@@ -43,5 +42,3 @@ public:
 
 } // namespace Internal
 } // namespace TaskList
-
-#endif // STOPMONITORINGHANDLER_H
diff --git a/src/plugins/tasklist/taskfile.h b/src/plugins/tasklist/taskfile.h
index 11bfce115b..eaaf638829 100644
--- a/src/plugins/tasklist/taskfile.h
+++ b/src/plugins/tasklist/taskfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TASKFILE_H
-#define TASKFILE_H
+#pragma once
 
 #include <coreplugin/idocument.h>
 
@@ -46,5 +45,3 @@ public:
 
 } // namespace Internal
 } // namespace TaskList
-
-#endif // TASKFILE_H
diff --git a/src/plugins/tasklist/tasklistconstants.h b/src/plugins/tasklist/tasklistconstants.h
index 0b6a1c2174..77b44f7766 100644
--- a/src/plugins/tasklist/tasklistconstants.h
+++ b/src/plugins/tasklist/tasklistconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TASKLIST_TASKLISTCONSTANTS_H
-#define TASKLIST_TASKLISTCONSTANTS_H
+#pragma once
 
 namespace TaskList {
 namespace Constants {
@@ -33,5 +32,3 @@ const char TASKLISTTASK_ID[] = "TaskList.TaskListTaskId";
 
 } // namespace Constants
 } // namespace TaskList
-
-#endif // TASKLIST_TASKLISTCONSTANTS_H
diff --git a/src/plugins/tasklist/tasklistplugin.h b/src/plugins/tasklist/tasklistplugin.h
index ef79914ac5..ec6bbd2af8 100644
--- a/src/plugins/tasklist/tasklistplugin.h
+++ b/src/plugins/tasklist/tasklistplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TASKLISTPLUGIN_H
-#define TASKLISTPLUGIN_H
+#pragma once
 
 #include <coreplugin/idocumentfactory.h>
 #include <extensionsystem/iplugin.h>
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace TaskList
-
-#endif // TASKLISTPLUGIN_H
diff --git a/src/plugins/texteditor/autocompleter.h b/src/plugins/texteditor/autocompleter.h
index 6122b4d8e3..49c6586abe 100644
--- a/src/plugins/texteditor/autocompleter.h
+++ b/src/plugins/texteditor/autocompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef AUTOCOMPLETER_H
-#define AUTOCOMPLETER_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -90,5 +89,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // AUTOCOMPLETER_H
diff --git a/src/plugins/texteditor/basefilefind.h b/src/plugins/texteditor/basefilefind.h
index a39d1f3643..428296c3ec 100644
--- a/src/plugins/texteditor/basefilefind.h
+++ b/src/plugins/texteditor/basefilefind.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEFILEFIND_H
-#define BASEFILEFIND_H
+#pragma once
 
 #include "texteditor_global.h"
 #include "utils/filesearch.h"
@@ -139,5 +138,3 @@ private:
 } // namespace TextEditor
 
 Q_DECLARE_METATYPE(TextEditor::FileFindParameters)
-
-#endif // BASEFILEFIND_H
diff --git a/src/plugins/texteditor/basehoverhandler.h b/src/plugins/texteditor/basehoverhandler.h
index 91e5e4e38d..7a5334e3a8 100644
--- a/src/plugins/texteditor/basehoverhandler.h
+++ b/src/plugins/texteditor/basehoverhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASEHOVERHANDLER_H
-#define BASEHOVERHANDLER_H
+#pragma once
 
 #include "texteditor_global.h"
 #include "helpitem.h"
@@ -86,5 +85,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // BASEHOVERHANDLER_H
diff --git a/src/plugins/texteditor/behaviorsettings.h b/src/plugins/texteditor/behaviorsettings.h
index f45fd4a9c0..a6818d0479 100644
--- a/src/plugins/texteditor/behaviorsettings.h
+++ b/src/plugins/texteditor/behaviorsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEHAVIORSETTINGS_H
-#define BEHAVIORSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -66,5 +65,3 @@ inline bool operator==(const BehaviorSettings &t1, const BehaviorSettings &t2) {
 inline bool operator!=(const BehaviorSettings &t1, const BehaviorSettings &t2) { return !t1.equals(t2); }
 
 } // namespace TextEditor
-
-#endif // BEHAVIORSETTINGS_H
diff --git a/src/plugins/texteditor/behaviorsettingspage.h b/src/plugins/texteditor/behaviorsettingspage.h
index fe7cdae09b..42e70f6972 100644
--- a/src/plugins/texteditor/behaviorsettingspage.h
+++ b/src/plugins/texteditor/behaviorsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEHAVIORSETTINGSPAGE_H
-#define BEHAVIORSETTINGSPAGE_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -90,5 +89,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // BEHAVIORSETTINGSPAGE_H
diff --git a/src/plugins/texteditor/behaviorsettingswidget.h b/src/plugins/texteditor/behaviorsettingswidget.h
index 6e8f33fd0b..12c4b7eedd 100644
--- a/src/plugins/texteditor/behaviorsettingswidget.h
+++ b/src/plugins/texteditor/behaviorsettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BEHAVIORSETTINGSWIDGET_H
-#define BEHAVIORSETTINGSWIDGET_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -93,5 +92,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // BEHAVIORSETTINGSWIDGET_H
diff --git a/src/plugins/texteditor/blockrange.h b/src/plugins/texteditor/blockrange.h
index 9f821031f3..43449cdc6c 100644
--- a/src/plugins/texteditor/blockrange.h
+++ b/src/plugins/texteditor/blockrange.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BLOCKRANGE_H
-#define BLOCKRANGE_H
+#pragma once
 
 namespace TextEditor {
 
@@ -58,5 +57,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // BLOCKRANGE_H
diff --git a/src/plugins/texteditor/circularclipboard.h b/src/plugins/texteditor/circularclipboard.h
index 23178ac5a1..e888f32c2f 100644
--- a/src/plugins/texteditor/circularclipboard.h
+++ b/src/plugins/texteditor/circularclipboard.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CIRCULARCLIPBOARD_H
-#define CIRCULARCLIPBOARD_H
+#pragma once
 
 #include <QList>
 #include <QMimeData>
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // CIRCULARCLIPBOARD_H
diff --git a/src/plugins/texteditor/circularclipboardassist.h b/src/plugins/texteditor/circularclipboardassist.h
index 4064cd4a45..d8d37c72cc 100644
--- a/src/plugins/texteditor/circularclipboardassist.h
+++ b/src/plugins/texteditor/circularclipboardassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CIRCULARCLIPBOARDASSIST_H
-#define CIRCULARCLIPBOARDASSIST_H
+#pragma once
 
 #include "codeassist/iassistprovider.h"
 
@@ -42,5 +41,3 @@ public:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // CIRCULARCLIPBOARDASSIST_H
diff --git a/src/plugins/texteditor/codeassist/assistenums.h b/src/plugins/texteditor/codeassist/assistenums.h
index d1e068c7f3..2a5995526d 100644
--- a/src/plugins/texteditor/codeassist/assistenums.h
+++ b/src/plugins/texteditor/codeassist/assistenums.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ASSISTENUMS_H
-#define ASSISTENUMS_H
+#pragma once
 
 namespace TextEditor {
 
@@ -43,5 +42,3 @@ enum AssistReason
 };
 
 } // TextEditor
-
-#endif // ASSISTENUMS_H
diff --git a/src/plugins/texteditor/codeassist/assistinterface.h b/src/plugins/texteditor/codeassist/assistinterface.h
index 0431ff7363..5daa611dee 100644
--- a/src/plugins/texteditor/codeassist/assistinterface.h
+++ b/src/plugins/texteditor/codeassist/assistinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTINTERFACE_H
-#define IASSISTINTERFACE_H
+#pragma once
 
 #include "assistenums.h"
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // IASSISTINTERFACE_H
diff --git a/src/plugins/texteditor/codeassist/assistproposalitem.h b/src/plugins/texteditor/codeassist/assistproposalitem.h
index 914115bd21..8d957a2f81 100644
--- a/src/plugins/texteditor/codeassist/assistproposalitem.h
+++ b/src/plugins/texteditor/codeassist/assistproposalitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTPROPOSALITEM_H
-#define IASSISTPROPOSALITEM_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -74,5 +73,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // BASICPROPOSALITEM_H
diff --git a/src/plugins/texteditor/codeassist/assistproposaliteminterface.h b/src/plugins/texteditor/codeassist/assistproposaliteminterface.h
index a195cd9585..d85c7a2ccc 100644
--- a/src/plugins/texteditor/codeassist/assistproposaliteminterface.h
+++ b/src/plugins/texteditor/codeassist/assistproposaliteminterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_ASSISTPROPOSALITEMINTERFACE_H
-#define TEXTEDITOR_ASSISTPROPOSALITEMINTERFACE_H
+#pragma once
 
 #include "textdocumentmanipulatorinterface.h"
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITOR_ASSISTPROPOSALITEMINTERFACE_H
diff --git a/src/plugins/texteditor/codeassist/codeassistant.h b/src/plugins/texteditor/codeassist/codeassistant.h
index c6f327617c..f1babd4582 100644
--- a/src/plugins/texteditor/codeassist/codeassistant.h
+++ b/src/plugins/texteditor/codeassist/codeassistant.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODEASSISTANT_H
-#define CODEASSISTANT_H
+#pragma once
 
 #include "assistenums.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 } //TextEditor
-
-#endif // CODEASSISTANT_H
diff --git a/src/plugins/texteditor/codeassist/completionassistprovider.h b/src/plugins/texteditor/codeassist/completionassistprovider.h
index 29061312b2..c0c150b3ea 100644
--- a/src/plugins/texteditor/codeassist/completionassistprovider.h
+++ b/src/plugins/texteditor/codeassist/completionassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPLETIONASSISTPROVIDER_H
-#define COMPLETIONASSISTPROVIDER_H
+#pragma once
 
 #include "iassistprovider.h"
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // TextEditor
-
-#endif // COMPLETIONASSISTPROVIDER_H
diff --git a/src/plugins/texteditor/codeassist/functionhintproposal.h b/src/plugins/texteditor/codeassist/functionhintproposal.h
index 87b77e771a..fc3fd2dad7 100644
--- a/src/plugins/texteditor/codeassist/functionhintproposal.h
+++ b/src/plugins/texteditor/codeassist/functionhintproposal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FUNCTIONHINTPROPOSAL_H
-#define FUNCTIONHINTPROPOSAL_H
+#pragma once
 
 #include "iassistproposal.h"
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // FUNCTIONHINTPROPOSAL_H
diff --git a/src/plugins/texteditor/codeassist/functionhintproposalwidget.h b/src/plugins/texteditor/codeassist/functionhintproposalwidget.h
index cb9e284b4c..d42d1e3e69 100644
--- a/src/plugins/texteditor/codeassist/functionhintproposalwidget.h
+++ b/src/plugins/texteditor/codeassist/functionhintproposalwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FUNCTIONHINTPROPOSALWIDGET_H
-#define FUNCTIONHINTPROPOSALWIDGET_H
+#pragma once
 
 #include "iassistproposalwidget.h"
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // FUNCTIONHINTPROPOSALWIDGET_H
diff --git a/src/plugins/texteditor/codeassist/genericproposal.h b/src/plugins/texteditor/codeassist/genericproposal.h
index 87da2ec56b..50b6a8e594 100644
--- a/src/plugins/texteditor/codeassist/genericproposal.h
+++ b/src/plugins/texteditor/codeassist/genericproposal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERICPROPOSAL_H
-#define GENERICPROPOSAL_H
+#pragma once
 
 #include "iassistproposal.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // GENERICPROPOSAL_H
diff --git a/src/plugins/texteditor/codeassist/genericproposalmodel.h b/src/plugins/texteditor/codeassist/genericproposalmodel.h
index 0f27ca4659..07f04209fe 100644
--- a/src/plugins/texteditor/codeassist/genericproposalmodel.h
+++ b/src/plugins/texteditor/codeassist/genericproposalmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IGENERICPROPOSALMODEL_H
-#define IGENERICPROPOSALMODEL_H
+#pragma once
 
 #include "iassistproposalmodel.h"
 #include "assistenums.h"
@@ -75,5 +74,3 @@ private:
     QList<AssistProposalItemInterface *> m_originalItems;
 };
 } // TextEditor
-
-#endif // IGENERICPROPOSALMODEL_H
diff --git a/src/plugins/texteditor/codeassist/genericproposalwidget.h b/src/plugins/texteditor/codeassist/genericproposalwidget.h
index d160627bb1..016a3b952b 100644
--- a/src/plugins/texteditor/codeassist/genericproposalwidget.h
+++ b/src/plugins/texteditor/codeassist/genericproposalwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GENERICPROPOSALWIDGET_H
-#define GENERICPROPOSALWIDGET_H
+#pragma once
 
 #include "iassistproposalwidget.h"
 
@@ -75,5 +74,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // GENERICPROPOSALWIDGET_H
diff --git a/src/plugins/texteditor/codeassist/iassistprocessor.h b/src/plugins/texteditor/codeassist/iassistprocessor.h
index 95ac3371d3..d2c618ac4b 100644
--- a/src/plugins/texteditor/codeassist/iassistprocessor.h
+++ b/src/plugins/texteditor/codeassist/iassistprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTPROCESSOR_H
-#define IASSISTPROCESSOR_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -60,5 +59,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // IASSISTPROCESSOR_H
diff --git a/src/plugins/texteditor/codeassist/iassistproposal.h b/src/plugins/texteditor/codeassist/iassistproposal.h
index c74710b122..c4ce1299a5 100644
--- a/src/plugins/texteditor/codeassist/iassistproposal.h
+++ b/src/plugins/texteditor/codeassist/iassistproposal.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTPROPOSAL_H
-#define IASSISTPROPOSAL_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -49,5 +48,3 @@ public:
 };
 
 } // TextEditor
-
-#endif // IASSISTPROPOSAL_H
diff --git a/src/plugins/texteditor/codeassist/iassistproposalmodel.h b/src/plugins/texteditor/codeassist/iassistproposalmodel.h
index 32f4d2bee2..7519636393 100644
--- a/src/plugins/texteditor/codeassist/iassistproposalmodel.h
+++ b/src/plugins/texteditor/codeassist/iassistproposalmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTPROPOSALMODEL_H
-#define IASSISTPROPOSALMODEL_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // TextEditor
-
-#endif // IASSISTPROPOSALMODEL_H
diff --git a/src/plugins/texteditor/codeassist/iassistproposalwidget.h b/src/plugins/texteditor/codeassist/iassistproposalwidget.h
index c64147d78d..2f2f6e8bf6 100644
--- a/src/plugins/texteditor/codeassist/iassistproposalwidget.h
+++ b/src/plugins/texteditor/codeassist/iassistproposalwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTPROPOSALWIDGET_H
-#define IASSISTPROPOSALWIDGET_H
+#pragma once
 
 #include "assistenums.h"
 
@@ -65,5 +64,3 @@ signals:
 };
 
 } // TextEditor
-
-#endif // IASSISTPROPOSALWIDGET_H
diff --git a/src/plugins/texteditor/codeassist/iassistprovider.h b/src/plugins/texteditor/codeassist/iassistprovider.h
index eef1fded0f..3be7a77cd0 100644
--- a/src/plugins/texteditor/codeassist/iassistprovider.h
+++ b/src/plugins/texteditor/codeassist/iassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IASSISTPROVIDER_H
-#define IASSISTPROVIDER_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -54,5 +53,3 @@ public:
 };
 
 } // TextEditor
-
-#endif // IASSISTPROVIDER_H
diff --git a/src/plugins/texteditor/codeassist/ifunctionhintproposalmodel.h b/src/plugins/texteditor/codeassist/ifunctionhintproposalmodel.h
index 6a9b9b3ac0..1af6bf1219 100644
--- a/src/plugins/texteditor/codeassist/ifunctionhintproposalmodel.h
+++ b/src/plugins/texteditor/codeassist/ifunctionhintproposalmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IFUNCTIONHINTPROPOSALMODEL_H
-#define IFUNCTIONHINTPROPOSALMODEL_H
+#pragma once
 
 #include "iassistproposalmodel.h"
 
@@ -42,5 +41,3 @@ public:
 };
 
 } // TextEditor
-
-#endif // IFUNCTIONHINTPROPOSALMODEL_H
diff --git a/src/plugins/texteditor/codeassist/keywordscompletionassist.h b/src/plugins/texteditor/codeassist/keywordscompletionassist.h
index 68e7246e68..30a22336e3 100644
--- a/src/plugins/texteditor/codeassist/keywordscompletionassist.h
+++ b/src/plugins/texteditor/codeassist/keywordscompletionassist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef KEYWORDSCOMPLETIONASSIST_H
-#define KEYWORDSCOMPLETIONASSIST_H
+#pragma once
 
 #include "iassistprocessor.h"
 #include "assistproposalitem.h"
@@ -105,5 +104,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // KEYWORDSCOMPLETIONASSISTPROCESSOR_H
diff --git a/src/plugins/texteditor/codeassist/quickfixassistprocessor.h b/src/plugins/texteditor/codeassist/quickfixassistprocessor.h
index 0ff320c9da..c418cfb02c 100644
--- a/src/plugins/texteditor/codeassist/quickfixassistprocessor.h
+++ b/src/plugins/texteditor/codeassist/quickfixassistprocessor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QUICKFIXASSISTPROCESSOR_H
-#define QUICKFIXASSISTPROCESSOR_H
+#pragma once
 
 #include "iassistprocessor.h"
 
@@ -45,5 +44,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // QUICKFIXASSISTPROCESSOR_H
diff --git a/src/plugins/texteditor/codeassist/quickfixassistprovider.h b/src/plugins/texteditor/codeassist/quickfixassistprovider.h
index 01214d2d90..6a480ca2c9 100644
--- a/src/plugins/texteditor/codeassist/quickfixassistprovider.h
+++ b/src/plugins/texteditor/codeassist/quickfixassistprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QUICKFIXASSISTPROVIDER_H
-#define QUICKFIXASSISTPROVIDER_H
+#pragma once
 
 #include "iassistprovider.h"
 
@@ -46,5 +45,3 @@ public:
 };
 
 } // TextEditor
-
-#endif // QUICKFIXASSISTPROVIDER_H
diff --git a/src/plugins/texteditor/codeassist/runner.h b/src/plugins/texteditor/codeassist/runner.h
index 05aebaf929..2c33eeed6c 100644
--- a/src/plugins/texteditor/codeassist/runner.h
+++ b/src/plugins/texteditor/codeassist/runner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROCESSORRUNNER_H
-#define PROCESSORRUNNER_H
+#pragma once
 
 #include "iassistproposalwidget.h"
 
@@ -68,5 +67,3 @@ private:
 
 } // Internal
 } // TextEditor
-
-#endif // PROCESSORRUNNER_H
diff --git a/src/plugins/texteditor/codeassist/textdocumentmanipulator.h b/src/plugins/texteditor/codeassist/textdocumentmanipulator.h
index 9ca59576aa..8b4547f113 100644
--- a/src/plugins/texteditor/codeassist/textdocumentmanipulator.h
+++ b/src/plugins/texteditor/codeassist/textdocumentmanipulator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTDOCUMENTMANIPULATOR_H
-#define TEXTDOCUMENTMANIPULATOR_H
+#pragma once
 
 #include "textdocumentmanipulatorinterface.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTDOCUMENTMANIPULATOR_H
diff --git a/src/plugins/texteditor/codeassist/textdocumentmanipulatorinterface.h b/src/plugins/texteditor/codeassist/textdocumentmanipulatorinterface.h
index 400214c1f6..62c6489fb5 100644
--- a/src/plugins/texteditor/codeassist/textdocumentmanipulatorinterface.h
+++ b/src/plugins/texteditor/codeassist/textdocumentmanipulatorinterface.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTDOCUMENTMANIPULATORINTERFACE_H
-#define TEXTDOCUMENTMANIPULATORINTERFACE_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -56,5 +55,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTDOCUMENTMANIPULATORINTERFACE_H
diff --git a/src/plugins/texteditor/codecselector.h b/src/plugins/texteditor/codecselector.h
index a7e28be9e6..4bd84eb4c4 100644
--- a/src/plugins/texteditor/codecselector.h
+++ b/src/plugins/texteditor/codecselector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODECSELECTOR_H
-#define CODECSELECTOR_H
+#pragma once
 
 #include <QDialog>
 #include <QLabel>
@@ -70,5 +69,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // CODECSELECTOR_H
diff --git a/src/plugins/texteditor/codestyleeditor.h b/src/plugins/texteditor/codestyleeditor.h
index a2473c29f7..e76e343953 100644
--- a/src/plugins/texteditor/codestyleeditor.h
+++ b/src/plugins/texteditor/codestyleeditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODESTYLEEDITOR_H
-#define CODESTYLEEDITOR_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -59,5 +58,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // CODESTYLEEDITOR_H
diff --git a/src/plugins/texteditor/codestylepool.h b/src/plugins/texteditor/codestylepool.h
index b131b0ea1e..4c8727ab05 100644
--- a/src/plugins/texteditor/codestylepool.h
+++ b/src/plugins/texteditor/codestylepool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODESTYLEPOOL_H
-#define CODESTYLEPOOL_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -81,5 +80,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // CODESTYLEPOOL_H
diff --git a/src/plugins/texteditor/codestyleselectorwidget.h b/src/plugins/texteditor/codestyleselectorwidget.h
index 4bae78938a..05ae0c41d8 100644
--- a/src/plugins/texteditor/codestyleselectorwidget.h
+++ b/src/plugins/texteditor/codestyleselectorwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODESTYLESELECTORWIDGET_H
-#define CODESTYLESELECTORWIDGET_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -78,5 +77,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // CODESTYLESELECTORWIDGET_H
diff --git a/src/plugins/texteditor/colorpreviewhoverhandler.h b/src/plugins/texteditor/colorpreviewhoverhandler.h
index 2ab4e83f1d..eaa701c287 100644
--- a/src/plugins/texteditor/colorpreviewhoverhandler.h
+++ b/src/plugins/texteditor/colorpreviewhoverhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLORPREVIEWHOVERHANDLER_H
-#define COLORPREVIEWHOVERHANDLER_H
+#pragma once
 
 #include "texteditor_global.h"
 #include "basehoverhandler.h"
@@ -50,5 +49,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // COLORPREVIEWHOVERHANDLER_H
diff --git a/src/plugins/texteditor/colorscheme.h b/src/plugins/texteditor/colorscheme.h
index 3325f300e0..f065b18648 100644
--- a/src/plugins/texteditor/colorscheme.h
+++ b/src/plugins/texteditor/colorscheme.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLORSCHEME_H
-#define COLORSCHEME_H
+#pragma once
 
 #include "texteditor_global.h"
 #include "texteditorconstants.h"
@@ -127,5 +126,3 @@ inline bool operator==(const ColorScheme &cs1, const ColorScheme &cs2) { return
 inline bool operator!=(const ColorScheme &cs1, const ColorScheme &cs2) { return !cs1.equals(cs2); }
 
 } // namespace TextEditor
-
-#endif // COLORSCHEME_H
diff --git a/src/plugins/texteditor/colorschemeedit.h b/src/plugins/texteditor/colorschemeedit.h
index b97470cd3d..eb2f50fd3f 100644
--- a/src/plugins/texteditor/colorschemeedit.h
+++ b/src/plugins/texteditor/colorschemeedit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COLORSCHEMEEDIT_H
-#define COLORSCHEMEEDIT_H
+#pragma once
 
 #include "colorscheme.h"
 #include "fontsettingspage.h"
@@ -91,5 +90,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // COLORSCHEMEEDIT_H
diff --git a/src/plugins/texteditor/completionsettings.h b/src/plugins/texteditor/completionsettings.h
index 5d9ebe3ddb..0b948baf56 100644
--- a/src/plugins/texteditor/completionsettings.h
+++ b/src/plugins/texteditor/completionsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef COMPLETIONSETTINGS_H
-#define COMPLETIONSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -73,5 +72,3 @@ inline bool operator==(const CompletionSettings &t1, const CompletionSettings &t
 inline bool operator!=(const CompletionSettings &t1, const CompletionSettings &t2) { return !t1.equals(t2); }
 
 } // namespace TextEditor
-
-#endif // COMPLETIONSETTINGS_H
diff --git a/src/plugins/texteditor/convenience.h b/src/plugins/texteditor/convenience.h
index 49a4f58130..65dcd6be46 100644
--- a/src/plugins/texteditor/convenience.h
+++ b/src/plugins/texteditor/convenience.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONVENIENCE_H
-#define CONVENIENCE_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -48,5 +47,3 @@ TEXTEDITOR_EXPORT QTextCursor flippedCursor(const QTextCursor &cursor);
 
 } // Util
 } // TextEditor
-
-#endif // CONVENIENCE_H
diff --git a/src/plugins/texteditor/displaysettings.h b/src/plugins/texteditor/displaysettings.h
index d93312bc71..1bb2bd8273 100644
--- a/src/plugins/texteditor/displaysettings.h
+++ b/src/plugins/texteditor/displaysettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DISPLAYSETTINGS_H
-#define DISPLAYSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -65,5 +64,3 @@ inline bool operator==(const DisplaySettings &t1, const DisplaySettings &t2) { r
 inline bool operator!=(const DisplaySettings &t1, const DisplaySettings &t2) { return !t1.equals(t2); }
 
 } // namespace TextEditor
-
-#endif // DISPLAYSETTINGS_H
diff --git a/src/plugins/texteditor/displaysettingspage.h b/src/plugins/texteditor/displaysettingspage.h
index 26f5d9375f..8370f840cc 100644
--- a/src/plugins/texteditor/displaysettingspage.h
+++ b/src/plugins/texteditor/displaysettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DISPLAYSETTINGSPAGE_H
-#define DISPLAYSETTINGSPAGE_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -73,5 +72,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // DISPLAYSETTINGSPAGE_H
diff --git a/src/plugins/texteditor/extraencodingsettings.h b/src/plugins/texteditor/extraencodingsettings.h
index ffbb26f5ba..1361760b05 100644
--- a/src/plugins/texteditor/extraencodingsettings.h
+++ b/src/plugins/texteditor/extraencodingsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ENCODINGSETTINGS_H
-#define ENCODINGSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -65,5 +64,3 @@ inline bool operator!=(const ExtraEncodingSettings &a, const ExtraEncodingSettin
 { return !a.equals(b); }
 
 } // TextEditor
-
-#endif // ENCODINGSETTINGS_H
diff --git a/src/plugins/texteditor/findincurrentfile.h b/src/plugins/texteditor/findincurrentfile.h
index e7cf3c0122..354680d63d 100644
--- a/src/plugins/texteditor/findincurrentfile.h
+++ b/src/plugins/texteditor/findincurrentfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDINCURRENTFILE_H
-#define FINDINCURRENTFILE_H
+#pragma once
 
 #include "basefilefind.h"
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // FINDINCURRENTFILE_H
diff --git a/src/plugins/texteditor/findinfiles.h b/src/plugins/texteditor/findinfiles.h
index c049820311..71416aba22 100644
--- a/src/plugins/texteditor/findinfiles.h
+++ b/src/plugins/texteditor/findinfiles.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDINFILES_H
-#define FINDINFILES_H
+#pragma once
 
 #include "basefilefind.h"
 
@@ -77,5 +76,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // FINDINFILES_H
diff --git a/src/plugins/texteditor/findinopenfiles.h b/src/plugins/texteditor/findinopenfiles.h
index ecd792f822..759636c1ae 100644
--- a/src/plugins/texteditor/findinopenfiles.h
+++ b/src/plugins/texteditor/findinopenfiles.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDINOPENFILES_H
-#define FINDINOPENFILES_H
+#pragma once
 
 #include "basefilefind.h"
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // FINDINOPENFILES_H
diff --git a/src/plugins/texteditor/fontsettings.h b/src/plugins/texteditor/fontsettings.h
index 68fb62d241..dbecc31a3e 100644
--- a/src/plugins/texteditor/fontsettings.h
+++ b/src/plugins/texteditor/fontsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FONTSETTINGS_H
-#define FONTSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -119,5 +118,3 @@ inline bool operator==(const FontSettings &f1, const FontSettings &f2) { return
 inline bool operator!=(const FontSettings &f1, const FontSettings &f2) { return !f1.equals(f2); }
 
 } // namespace TextEditor
-
-#endif // FONTSETTINGS_H
diff --git a/src/plugins/texteditor/fontsettingspage.h b/src/plugins/texteditor/fontsettingspage.h
index 16365a4514..fccc072e48 100644
--- a/src/plugins/texteditor/fontsettingspage.h
+++ b/src/plugins/texteditor/fontsettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FONTSETTINGSPAGE_H
-#define FONTSETTINGSPAGE_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -152,5 +151,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // FONTSETTINGSPAGE_H
diff --git a/src/plugins/texteditor/generichighlighter/context.h b/src/plugins/texteditor/generichighlighter/context.h
index 93bd1f4775..79b0b280cb 100644
--- a/src/plugins/texteditor/generichighlighter/context.h
+++ b/src/plugins/texteditor/generichighlighter/context.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTEXT_H
-#define CONTEXT_H
+#pragma once
 
 #include "includerulesinstruction.h"
 
@@ -102,5 +101,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // CONTEXT_H
diff --git a/src/plugins/texteditor/generichighlighter/definitiondownloader.h b/src/plugins/texteditor/generichighlighter/definitiondownloader.h
index 069675aa25..f9010fd873 100644
--- a/src/plugins/texteditor/generichighlighter/definitiondownloader.h
+++ b/src/plugins/texteditor/generichighlighter/definitiondownloader.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DEFINITIONDOWNLOADER_H
-#define DEFINITIONDOWNLOADER_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -77,5 +76,3 @@ struct DownloaderStarter
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // DEFINITIONDOWNLOADER_H
diff --git a/src/plugins/texteditor/generichighlighter/dynamicrule.h b/src/plugins/texteditor/generichighlighter/dynamicrule.h
index 2014112eeb..c78b06f544 100644
--- a/src/plugins/texteditor/generichighlighter/dynamicrule.h
+++ b/src/plugins/texteditor/generichighlighter/dynamicrule.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DYNAMICRULE_H
-#define DYNAMICRULE_H
+#pragma once
 
 #include "rule.h"
 
@@ -56,5 +55,3 @@ void updateDynamicRules(const QList<QSharedPointer<Rule> > &rules, const QString
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // DYNAMICRULE_H
diff --git a/src/plugins/texteditor/generichighlighter/highlightdefinition.h b/src/plugins/texteditor/generichighlighter/highlightdefinition.h
index c795f3900e..f39373df18 100644
--- a/src/plugins/texteditor/generichighlighter/highlightdefinition.h
+++ b/src/plugins/texteditor/generichighlighter/highlightdefinition.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTDEFINITION_H
-#define HIGHLIGHTDEFINITION_H
+#pragma once
 
 #include <QString>
 #include <QHash>
@@ -107,5 +106,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // HIGHLIGHTDEFINITION_H
diff --git a/src/plugins/texteditor/generichighlighter/highlightdefinitionhandler.h b/src/plugins/texteditor/generichighlighter/highlightdefinitionhandler.h
index 6f1ffb1ebc..44f5b3004e 100644
--- a/src/plugins/texteditor/generichighlighter/highlightdefinitionhandler.h
+++ b/src/plugins/texteditor/generichighlighter/highlightdefinitionhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTDEFINITIONHANDLER_H
-#define HIGHLIGHTDEFINITIONHANDLER_H
+#pragma once
 
 #include <QString>
 #include <QSharedPointer>
@@ -98,5 +97,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // HIGHLIGHTDEFINITIONHANDLER_H
diff --git a/src/plugins/texteditor/generichighlighter/highlightdefinitionmetadata.h b/src/plugins/texteditor/generichighlighter/highlightdefinitionmetadata.h
index 030bdb9418..d6baff3d39 100644
--- a/src/plugins/texteditor/generichighlighter/highlightdefinitionmetadata.h
+++ b/src/plugins/texteditor/generichighlighter/highlightdefinitionmetadata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTDEFINITIONMETADATA_H
-#define HIGHLIGHTDEFINITIONMETADATA_H
+#pragma once
 
 #include <QSharedPointer>
 #include <QStringList>
@@ -53,5 +52,3 @@ typedef QSharedPointer<HighlightDefinitionMetaData> DefinitionMetaDataPtr;
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // HIGHLIGHTDEFINITIONMETADATA_H
diff --git a/src/plugins/texteditor/generichighlighter/highlighter.h b/src/plugins/texteditor/generichighlighter/highlighter.h
index c3eab63439..af921cdccd 100644
--- a/src/plugins/texteditor/generichighlighter/highlighter.h
+++ b/src/plugins/texteditor/generichighlighter/highlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTER_H
-#define HIGHLIGHTER_H
+#pragma once
 
 #include "context.h"
 
@@ -192,5 +191,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // HIGHLIGHTER_H
diff --git a/src/plugins/texteditor/generichighlighter/highlighterexception.h b/src/plugins/texteditor/generichighlighter/highlighterexception.h
index a0287b6957..0850656966 100644
--- a/src/plugins/texteditor/generichighlighter/highlighterexception.h
+++ b/src/plugins/texteditor/generichighlighter/highlighterexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTEREXCEPTION_H
-#define HIGHLIGHTEREXCEPTION_H
+#pragma once
 
 #include <QString>
 
@@ -41,5 +40,3 @@ private:
 };
 }
 } // namespace TextEditor
-
-#endif // HIGHLIGHTEREXCEPTION_H
diff --git a/src/plugins/texteditor/generichighlighter/highlightersettings.h b/src/plugins/texteditor/generichighlighter/highlightersettings.h
index e06bd2a8c6..3323b5bd39 100644
--- a/src/plugins/texteditor/generichighlighter/highlightersettings.h
+++ b/src/plugins/texteditor/generichighlighter/highlightersettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTERSETTINGS_H
-#define HIGHLIGHTERSETTINGS_H
+#pragma once
 
 #include <QString>
 #include <QStringList>
@@ -84,5 +83,3 @@ QString findFallbackDefinitionsLocation();
 }
 
 } // namespace TextEditor
-
-#endif // HIGHLIGHTERSETTINGS_H
diff --git a/src/plugins/texteditor/generichighlighter/highlightersettingspage.h b/src/plugins/texteditor/generichighlighter/highlightersettingspage.h
index d1d407fc20..ca7b62aaf2 100644
--- a/src/plugins/texteditor/generichighlighter/highlightersettingspage.h
+++ b/src/plugins/texteditor/generichighlighter/highlightersettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTERSETTINGSPAGE_H
-#define HIGHLIGHTERSETTINGSPAGE_H
+#pragma once
 
 #include "highlightdefinitionmetadata.h"
 #include "../texteditoroptionspage.h"
@@ -72,5 +71,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // HIGHLIGHTERSETTINGSPAGE_H
diff --git a/src/plugins/texteditor/generichighlighter/includerulesinstruction.h b/src/plugins/texteditor/generichighlighter/includerulesinstruction.h
index 0a019555ac..aefdc42bb7 100644
--- a/src/plugins/texteditor/generichighlighter/includerulesinstruction.h
+++ b/src/plugins/texteditor/generichighlighter/includerulesinstruction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INCLUDERULESINSTRUCTION_H
-#define INCLUDERULESINSTRUCTION_H
+#pragma once
 
 #include <QString>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // INCLUDERULESINSTRUCTION_H
diff --git a/src/plugins/texteditor/generichighlighter/itemdata.h b/src/plugins/texteditor/generichighlighter/itemdata.h
index cbc5c8ae35..538d61ebde 100644
--- a/src/plugins/texteditor/generichighlighter/itemdata.h
+++ b/src/plugins/texteditor/generichighlighter/itemdata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ITEMDATA_H
-#define ITEMDATA_H
+#pragma once
 
 #include <QString>
 #include <QColor>
@@ -81,5 +80,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // ITEMDATA_H
diff --git a/src/plugins/texteditor/generichighlighter/keywordlist.h b/src/plugins/texteditor/generichighlighter/keywordlist.h
index a6fc0d652f..f111afa4e0 100644
--- a/src/plugins/texteditor/generichighlighter/keywordlist.h
+++ b/src/plugins/texteditor/generichighlighter/keywordlist.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef KEYWORDLIST_H
-#define KEYWORDLIST_H
+#pragma once
 
 #include <QString>
 #include <QSet>
@@ -45,5 +44,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // KEYWORDLIST_H
diff --git a/src/plugins/texteditor/generichighlighter/managedefinitionsdialog.h b/src/plugins/texteditor/generichighlighter/managedefinitionsdialog.h
index 7afd0aed5c..2a6d1c0308 100644
--- a/src/plugins/texteditor/generichighlighter/managedefinitionsdialog.h
+++ b/src/plugins/texteditor/generichighlighter/managedefinitionsdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MANAGEDEFINITIONSDIALOG_H
-#define MANAGEDEFINITIONSDIALOG_H
+#pragma once
 
 #include "ui_managedefinitionsdialog.h"
 #include "highlightdefinitionmetadata.h"
@@ -54,5 +53,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // MANAGEDEFINITIONSDIALOG_H
diff --git a/src/plugins/texteditor/generichighlighter/manager.h b/src/plugins/texteditor/generichighlighter/manager.h
index 41fa1d79f5..c6d9038ead 100644
--- a/src/plugins/texteditor/generichighlighter/manager.h
+++ b/src/plugins/texteditor/generichighlighter/manager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MANAGER_H
-#define MANAGER_H
+#pragma once
 
 #include "highlightdefinitionmetadata.h"
 
@@ -118,5 +117,3 @@ signals:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // MANAGER_H
diff --git a/src/plugins/texteditor/generichighlighter/progressdata.h b/src/plugins/texteditor/generichighlighter/progressdata.h
index 947507b282..9563a1601e 100644
--- a/src/plugins/texteditor/generichighlighter/progressdata.h
+++ b/src/plugins/texteditor/generichighlighter/progressdata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROGRESSDATA_H
-#define PROGRESSDATA_H
+#pragma once
 
 #include <QStringList>
 
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // PROGRESSDATA_H
diff --git a/src/plugins/texteditor/generichighlighter/reuse.h b/src/plugins/texteditor/generichighlighter/reuse.h
index 4ce6236f11..d8d21f35c6 100644
--- a/src/plugins/texteditor/generichighlighter/reuse.h
+++ b/src/plugins/texteditor/generichighlighter/reuse.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REUSE_H
-#define REUSE_H
+#pragma once
 
 #include <Qt>
 #include <QString>
@@ -92,5 +91,3 @@ inline void setStartCharacter(QChar *c, const QString &character)
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // REUSE_H
diff --git a/src/plugins/texteditor/generichighlighter/rule.h b/src/plugins/texteditor/generichighlighter/rule.h
index 8d87c491e8..4e25bef11a 100644
--- a/src/plugins/texteditor/generichighlighter/rule.h
+++ b/src/plugins/texteditor/generichighlighter/rule.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RULE_H
-#define RULE_H
+#pragma once
 
 #include <QString>
 #include <QList>
@@ -156,5 +155,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // RULE_H
diff --git a/src/plugins/texteditor/generichighlighter/specificrules.h b/src/plugins/texteditor/generichighlighter/specificrules.h
index 0507128a05..674c3fbd7b 100644
--- a/src/plugins/texteditor/generichighlighter/specificrules.h
+++ b/src/plugins/texteditor/generichighlighter/specificrules.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SPECIFICRULES_H
-#define SPECIFICRULES_H
+#pragma once
 
 #include "rule.h"
 #include "dynamicrule.h"
@@ -289,5 +288,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // SPECIFICRULES_H
diff --git a/src/plugins/texteditor/helpitem.h b/src/plugins/texteditor/helpitem.h
index db40390c12..f7ea8ee4f3 100644
--- a/src/plugins/texteditor/helpitem.h
+++ b/src/plugins/texteditor/helpitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORHELPITEM_H
-#define TEXTEDITORHELPITEM_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -81,5 +80,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITORHELPITEM_H
diff --git a/src/plugins/texteditor/highlighterutils.h b/src/plugins/texteditor/highlighterutils.h
index 2d07ffbbaf..cab592cacf 100644
--- a/src/plugins/texteditor/highlighterutils.h
+++ b/src/plugins/texteditor/highlighterutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HIGHLIGHTERUTILS_H
-#define HIGHLIGHTERUTILS_H
+#pragma once
 
 #include <QString>
 #include "texteditor_global.h"
@@ -44,5 +43,3 @@ void setMimeTypeForHighlighter(Highlighter *highlighter, const Utils::MimeType &
                                QString *foundDefinitionId = 0);
 
 } // namespace TextEditor
-
-#endif // HIGHLIGHTERUTILS_H
diff --git a/src/plugins/texteditor/icodestylepreferences.h b/src/plugins/texteditor/icodestylepreferences.h
index 2da03c7dfb..91dd72d9e3 100644
--- a/src/plugins/texteditor/icodestylepreferences.h
+++ b/src/plugins/texteditor/icodestylepreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ICODESTYLEPREFERENCES_H
-#define ICODESTYLEPREFERENCES_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -107,5 +106,3 @@ private:
 
 
 } // namespace TextEditor
-
-#endif // ICODESTYLEPREFERENCES_H
diff --git a/src/plugins/texteditor/icodestylepreferencesfactory.h b/src/plugins/texteditor/icodestylepreferencesfactory.h
index bc00f1aa7e..de4dc8de17 100644
--- a/src/plugins/texteditor/icodestylepreferencesfactory.h
+++ b/src/plugins/texteditor/icodestylepreferencesfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ICODESTYLEPREFERENCESFACTORY_H
-#define ICODESTYLEPREFERENCESFACTORY_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -54,5 +53,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // ICODESTYLEPREFERENCESFACTORY_H
diff --git a/src/plugins/texteditor/indenter.h b/src/plugins/texteditor/indenter.h
index 8f5093c9dd..08286b33f5 100644
--- a/src/plugins/texteditor/indenter.h
+++ b/src/plugins/texteditor/indenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INDENTER_H
-#define INDENTER_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -73,5 +72,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // INDENTER_H
diff --git a/src/plugins/texteditor/ioutlinewidget.h b/src/plugins/texteditor/ioutlinewidget.h
index 1306227b5f..d6aa32fa03 100644
--- a/src/plugins/texteditor/ioutlinewidget.h
+++ b/src/plugins/texteditor/ioutlinewidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOUTLINEWIDGET_H
-#define IOUTLINEWIDGET_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 #include <QWidget>
@@ -55,5 +54,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // IOUTLINEWIDGET_H
diff --git a/src/plugins/texteditor/linenumberfilter.h b/src/plugins/texteditor/linenumberfilter.h
index b482b086c9..8a8954cadf 100644
--- a/src/plugins/texteditor/linenumberfilter.h
+++ b/src/plugins/texteditor/linenumberfilter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LINENUMBERFILTER_H
-#define LINENUMBERFILTER_H
+#pragma once
 
 #include <coreplugin/locator/ilocatorfilter.h>
 
@@ -55,5 +54,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // LINENUMBERFILTER_H
diff --git a/src/plugins/texteditor/marginsettings.h b/src/plugins/texteditor/marginsettings.h
index 087d0f3b9e..ff8be7bcde 100644
--- a/src/plugins/texteditor/marginsettings.h
+++ b/src/plugins/texteditor/marginsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_MARGINSETTINGS_H
-#define TEXTEDITOR_MARGINSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -59,5 +58,3 @@ inline bool operator!=(const MarginSettings &one, const MarginSettings &two)
 { return !one.equals(two); }
 
 } // namespace TextEditor
-
-#endif // TEXTEDITOR_MARGINSETTINGS_H
diff --git a/src/plugins/texteditor/normalindenter.h b/src/plugins/texteditor/normalindenter.h
index 3cbbb6fd98..ca2a52c1d9 100644
--- a/src/plugins/texteditor/normalindenter.h
+++ b/src/plugins/texteditor/normalindenter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef NORMALINDENTER_H
-#define NORMALINDENTER_H
+#pragma once
 
 #include "indenter.h"
 
@@ -40,5 +39,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // NORMALINDENTER_H
diff --git a/src/plugins/texteditor/outlinefactory.h b/src/plugins/texteditor/outlinefactory.h
index 09421f1253..05f60a7859 100644
--- a/src/plugins/texteditor/outlinefactory.h
+++ b/src/plugins/texteditor/outlinefactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OUTLINE_H
-#define OUTLINE_H
+#pragma once
 
 #include <texteditor/ioutlinewidget.h>
 #include <coreplugin/inavigationwidgetfactory.h>
@@ -86,5 +85,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // OUTLINE_H
diff --git a/src/plugins/texteditor/plaintexteditorfactory.h b/src/plugins/texteditor/plaintexteditorfactory.h
index b060b1ca9f..38b0194895 100644
--- a/src/plugins/texteditor/plaintexteditorfactory.h
+++ b/src/plugins/texteditor/plaintexteditorfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLAINTEXTEDITORFACTORY_H
-#define PLAINTEXTEDITORFACTORY_H
+#pragma once
 
 #include <texteditor/texteditor.h>
 
@@ -41,5 +40,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // PLAINTEXTEDITORFACTORY_H
diff --git a/src/plugins/texteditor/quickfix.h b/src/plugins/texteditor/quickfix.h
index 56a1cb80b1..efb9f10619 100644
--- a/src/plugins/texteditor/quickfix.h
+++ b/src/plugins/texteditor/quickfix.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORQUICKFIX_H
-#define TEXTEDITORQUICKFIX_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -120,5 +119,3 @@ public:
 } // namespace TextEditor
 
 Q_DECLARE_METATYPE(TextEditor::QuickFixOperation::Ptr)
-
-#endif // TEXTEDITORQUICKFIX_H
diff --git a/src/plugins/texteditor/refactoringchanges.h b/src/plugins/texteditor/refactoringchanges.h
index aa842b34bd..737728a931 100644
--- a/src/plugins/texteditor/refactoringchanges.h
+++ b/src/plugins/texteditor/refactoringchanges.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REFACTORINGCHANGES_H
-#define REFACTORINGCHANGES_H
+#pragma once
 
 #include <utils/changeset.h>
 #include <utils/textfileformat.h>
@@ -163,5 +162,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // REFACTORINGCHANGES_H
diff --git a/src/plugins/texteditor/refactoroverlay.h b/src/plugins/texteditor/refactoroverlay.h
index d6eb3f2641..aceb55bb54 100644
--- a/src/plugins/texteditor/refactoroverlay.h
+++ b/src/plugins/texteditor/refactoroverlay.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REFACTOROVERLAY_H
-#define REFACTOROVERLAY_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -70,5 +69,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // REFACTOROVERLAY_H
diff --git a/src/plugins/texteditor/semantichighlighter.h b/src/plugins/texteditor/semantichighlighter.h
index 6e1d71ed8b..d0e0b97a71 100644
--- a/src/plugins/texteditor/semantichighlighter.h
+++ b/src/plugins/texteditor/semantichighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_SEMANTICHIGHLIGHTER_H
-#define TEXTEDITOR_SEMANTICHIGHLIGHTER_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -103,5 +102,3 @@ void TEXTEDITOR_EXPORT clearExtraAdditionalFormatsUntilEnd(
 
 } // namespace SemanticHighlighter
 } // namespace TextEditor
-
-#endif // TEXTEDITOR_SEMANTICHIGHLIGHTER_H
diff --git a/src/plugins/texteditor/simplecodestylepreferences.h b/src/plugins/texteditor/simplecodestylepreferences.h
index 1f974f0ed9..2f4c5680d0 100644
--- a/src/plugins/texteditor/simplecodestylepreferences.h
+++ b/src/plugins/texteditor/simplecodestylepreferences.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIMPLECODESTYLEPREFERENCES_H
-#define SIMPLECODESTYLEPREFERENCES_H
+#pragma once
 
 #include "icodestylepreferences.h"
 
@@ -45,5 +44,3 @@ protected:
 };
 
 } // namespace TextEditor
-
-#endif // SIMPLECODESTYLEPREFERENCES_H
diff --git a/src/plugins/texteditor/simplecodestylepreferenceswidget.h b/src/plugins/texteditor/simplecodestylepreferenceswidget.h
index 79f0135cee..9d4571fd33 100644
--- a/src/plugins/texteditor/simplecodestylepreferenceswidget.h
+++ b/src/plugins/texteditor/simplecodestylepreferenceswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIMPLECODESTYLEPREFERENCESWIDGET_H
-#define SIMPLECODESTYLEPREFERENCESWIDGET_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -59,4 +58,3 @@ private:
 };
 
 } // namespace TextEditor
-#endif // SIMPLECODESTYLEPREFERENCESWIDGET_H
diff --git a/src/plugins/texteditor/snippets/isnippetprovider.h b/src/plugins/texteditor/snippets/isnippetprovider.h
index 23461c6c2b..0001b0089c 100644
--- a/src/plugins/texteditor/snippets/isnippetprovider.h
+++ b/src/plugins/texteditor/snippets/isnippetprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ISNIPPETPROVIDER_H
-#define ISNIPPETPROVIDER_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -49,5 +48,3 @@ protected:
 };
 
 } // TextEditor
-
-#endif // ISNIPPETPROVIDER_H
diff --git a/src/plugins/texteditor/snippets/plaintextsnippetprovider.h b/src/plugins/texteditor/snippets/plaintextsnippetprovider.h
index e7a647755f..a3a3d949da 100644
--- a/src/plugins/texteditor/snippets/plaintextsnippetprovider.h
+++ b/src/plugins/texteditor/snippets/plaintextsnippetprovider.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PLAINTEXTSNIPPETPROVIDER_H
-#define PLAINTEXTSNIPPETPROVIDER_H
+#pragma once
 
 #include "isnippetprovider.h"
 
@@ -45,5 +44,3 @@ public:
 
 } // Internal
 } // TextEditor
-
-#endif // PLAINTEXTSNIPPETPROVIDER_H
diff --git a/src/plugins/texteditor/snippets/reuse.h b/src/plugins/texteditor/snippets/reuse.h
index 77832e1628..60ab7d6f17 100644
--- a/src/plugins/texteditor/snippets/reuse.h
+++ b/src/plugins/texteditor/snippets/reuse.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef REUSE_H
-#define REUSE_H
+#pragma once
 
 #include <QString>
 #include <QLatin1String>
@@ -51,5 +50,3 @@ inline QString fromBool(bool b)
 
 } // Internal
 } // TextEditor
-
-#endif // REUSE_H
diff --git a/src/plugins/texteditor/snippets/snippet.h b/src/plugins/texteditor/snippets/snippet.h
index ef802de519..7b95169a1f 100644
--- a/src/plugins/texteditor/snippets/snippet.h
+++ b/src/plugins/texteditor/snippets/snippet.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SNIPPET_H
-#define SNIPPET_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -103,5 +102,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // SNIPPET_H
diff --git a/src/plugins/texteditor/snippets/snippetassistcollector.h b/src/plugins/texteditor/snippets/snippetassistcollector.h
index 59f4df8e91..9cd2320435 100644
--- a/src/plugins/texteditor/snippets/snippetassistcollector.h
+++ b/src/plugins/texteditor/snippets/snippetassistcollector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SNIPPETASSISTCOLLECTOR_H
-#define SNIPPETASSISTCOLLECTOR_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // TextEditor
-
-#endif // SNIPPETASSISTCOLLECTOR_H
diff --git a/src/plugins/texteditor/snippets/snippeteditor.h b/src/plugins/texteditor/snippets/snippeteditor.h
index bb18c13bc9..d27a38baa1 100644
--- a/src/plugins/texteditor/snippets/snippeteditor.h
+++ b/src/plugins/texteditor/snippets/snippeteditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SNIPPETEDITOR_H
-#define SNIPPETEDITOR_H
+#pragma once
 
 #include <texteditor/texteditor_global.h>
 #include <texteditor/texteditor.h>
@@ -48,5 +47,3 @@ protected:
 };
 
 } // namespace TextEditor
-
-#endif // SNIPPETEDITOR_H
diff --git a/src/plugins/texteditor/snippets/snippetscollection.h b/src/plugins/texteditor/snippets/snippetscollection.h
index c0450ff66d..98e9d80f24 100644
--- a/src/plugins/texteditor/snippets/snippetscollection.h
+++ b/src/plugins/texteditor/snippets/snippetscollection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SNIPPETSCOLLECTION_H
-#define SNIPPETSCOLLECTION_H
+#pragma once
 
 #include "snippet.h"
 
@@ -137,5 +136,3 @@ private:
 
 } // Internal
 } // TextEditor
-
-#endif // SNIPPETSCOLLECTION_H
diff --git a/src/plugins/texteditor/snippets/snippetssettings.h b/src/plugins/texteditor/snippets/snippetssettings.h
index 5aa778f31d..d193478440 100644
--- a/src/plugins/texteditor/snippets/snippetssettings.h
+++ b/src/plugins/texteditor/snippets/snippetssettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SNIPPETSSETTINGS_H
-#define SNIPPETSSETTINGS_H
+#pragma once
 
 #include <QString>
 
@@ -58,5 +57,3 @@ inline bool operator!=(const SnippetsSettings &a, const SnippetsSettings &b)
 { return !a.equals(b); }
 
 } // TextEditor
-
-#endif // SNIPPETSSETTINGS_H
diff --git a/src/plugins/texteditor/snippets/snippetssettingspage.h b/src/plugins/texteditor/snippets/snippetssettingspage.h
index d50184e3c3..10e480bdad 100644
--- a/src/plugins/texteditor/snippets/snippetssettingspage.h
+++ b/src/plugins/texteditor/snippets/snippetssettingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SNIPPETSSETTINGSPAGE_H
-#define SNIPPETSSETTINGSPAGE_H
+#pragma once
 
 #include "../texteditoroptionspage.h"
 
@@ -51,5 +50,3 @@ private:
 
 } // Internal
 } // TextEditor
-
-#endif // SNIPPETSSETTINGSPAGE_H
diff --git a/src/plugins/texteditor/storagesettings.h b/src/plugins/texteditor/storagesettings.h
index b8684e7dfc..ffe7823f0f 100644
--- a/src/plugins/texteditor/storagesettings.h
+++ b/src/plugins/texteditor/storagesettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef STORAGESETTINGS_H
-#define STORAGESETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -59,5 +58,3 @@ inline bool operator==(const StorageSettings &t1, const StorageSettings &t2) { r
 inline bool operator!=(const StorageSettings &t1, const StorageSettings &t2) { return !t1.equals(t2); }
 
 } // namespace TextEditor
-
-#endif // STORAGESETTINGS_H
diff --git a/src/plugins/texteditor/syntaxhighlighter.h b/src/plugins/texteditor/syntaxhighlighter.h
index 32480f0ee5..8da2a908c7 100644
--- a/src/plugins/texteditor/syntaxhighlighter.h
+++ b/src/plugins/texteditor/syntaxhighlighter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_SYNTAXHIGHLIGHTER_H
-#define TEXTEDITOR_SYNTAXHIGHLIGHTER_H
+#pragma once
 
 #include "texteditor_global.h"
 #include <texteditor/texteditorconstants.h>
@@ -98,5 +97,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITOR_SYNTAXHIGHLIGHTER_H
diff --git a/src/plugins/texteditor/tabsettings.h b/src/plugins/texteditor/tabsettings.h
index f0b60584b7..01ea77c5bb 100644
--- a/src/plugins/texteditor/tabsettings.h
+++ b/src/plugins/texteditor/tabsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TABSETTINGS_H
-#define TABSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -104,5 +103,3 @@ inline bool operator!=(const TabSettings &t1, const TabSettings &t2) { return !t
 Q_DECLARE_METATYPE(TextEditor::TabSettings)
 Q_DECLARE_METATYPE(TextEditor::TabSettings::TabPolicy)
 Q_DECLARE_METATYPE(TextEditor::TabSettings::ContinuationAlignBehavior)
-
-#endif // TABSETTINGS_H
diff --git a/src/plugins/texteditor/tabsettingswidget.h b/src/plugins/texteditor/tabsettingswidget.h
index 942d4d872e..99ed5f0cc2 100644
--- a/src/plugins/texteditor/tabsettingswidget.h
+++ b/src/plugins/texteditor/tabsettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_TABSETTINGSWIDGET_H
-#define TEXTEDITOR_TABSETTINGSWIDGET_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -67,4 +66,3 @@ private:
 };
 
 } // namespace TextEditor
-#endif // TEXTEDITOR_TABSETTINGSWIDGET_H
diff --git a/src/plugins/texteditor/textdocument.h b/src/plugins/texteditor/textdocument.h
index f4eebcc46e..87a7d6ac2a 100644
--- a/src/plugins/texteditor/textdocument.h
+++ b/src/plugins/texteditor/textdocument.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASETEXTDOCUMENT_H
-#define BASETEXTDOCUMENT_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -157,5 +156,3 @@ private:
 typedef QSharedPointer<TextDocument> TextDocumentPtr;
 
 } // namespace TextEditor
-
-#endif // BASETEXTDOCUMENT_H
diff --git a/src/plugins/texteditor/textdocumentlayout.h b/src/plugins/texteditor/textdocumentlayout.h
index e746aa8461..928ed7dbb6 100644
--- a/src/plugins/texteditor/textdocumentlayout.h
+++ b/src/plugins/texteditor/textdocumentlayout.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTDOCUMENTLAYOUT_H
-#define TEXTDOCUMENTLAYOUT_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -223,5 +222,3 @@ signals:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTDOCUMENTLAYOUT_H
diff --git a/src/plugins/texteditor/texteditor.h b/src/plugins/texteditor/texteditor.h
index d29c325014..4e97b6396d 100644
--- a/src/plugins/texteditor/texteditor.h
+++ b/src/plugins/texteditor/texteditor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_H
-#define TEXTEDITOR_H
+#pragma once
 
 #include "texteditor_global.h"
 #include "blockrange.h"
@@ -666,5 +665,3 @@ private:
 } // namespace TextEditor
 
 Q_DECLARE_METATYPE(TextEditor::TextEditorWidget::Link)
-
-#endif // TEXTEDITOR_H
diff --git a/src/plugins/texteditor/texteditor_global.h b/src/plugins/texteditor/texteditor_global.h
index baceabf108..08f7adc5eb 100644
--- a/src/plugins/texteditor/texteditor_global.h
+++ b/src/plugins/texteditor/texteditor_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_GLOBAL_H
-#define TEXTEDITOR_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -46,5 +45,3 @@ enum TextPositionOperation
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITOR_GLOBAL_H
diff --git a/src/plugins/texteditor/texteditor_p.h b/src/plugins/texteditor/texteditor_p.h
index 6d7a2955db..ec2ad4ab7f 100644
--- a/src/plugins/texteditor/texteditor_p.h
+++ b/src/plugins/texteditor/texteditor_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOR_P_H
-#define TEXTEDITOR_P_H
+#pragma once
 
 
 #include "texteditor_global.h"
@@ -91,5 +90,3 @@ struct TextEditorPrivateHighlightBlocks
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // TEXTEDITOR_P_H
diff --git a/src/plugins/texteditor/texteditoractionhandler.h b/src/plugins/texteditor/texteditoractionhandler.h
index 710206734d..02067ae12d 100644
--- a/src/plugins/texteditor/texteditoractionhandler.h
+++ b/src/plugins/texteditor/texteditoractionhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORACTIONHANDLER_H
-#define TEXTEDITORACTIONHANDLER_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -68,5 +67,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITORACTIONHANDLER_H
diff --git a/src/plugins/texteditor/texteditorconstants.h b/src/plugins/texteditor/texteditorconstants.h
index 354ff5f252..0be947fc9a 100644
--- a/src/plugins/texteditor/texteditorconstants.h
+++ b/src/plugins/texteditor/texteditorconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORCONSTANTS_H
-#define TEXTEDITORCONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -208,5 +207,3 @@ const unsigned COMPLETION_ASSIST_TOOLTIP_DELAY = 100;
 
 } // namespace Constants
 } // namespace TextEditor
-
-#endif // TEXTEDITORCONSTANTS_H
diff --git a/src/plugins/texteditor/texteditoroptionspage.h b/src/plugins/texteditor/texteditoroptionspage.h
index 51b623545f..9bd8a1aaa0 100644
--- a/src/plugins/texteditor/texteditoroptionspage.h
+++ b/src/plugins/texteditor/texteditoroptionspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOROPTIONSPAGE_H
-#define TEXTEDITOROPTIONSPAGE_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -44,5 +43,3 @@ public:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITOROPTIONSPAGE_H
diff --git a/src/plugins/texteditor/texteditoroverlay.h b/src/plugins/texteditor/texteditoroverlay.h
index 5ee122690a..08a508f1da 100644
--- a/src/plugins/texteditor/texteditoroverlay.h
+++ b/src/plugins/texteditor/texteditoroverlay.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITOROVERLAY_H
-#define TEXTEDITOROVERLAY_H
+#pragma once
 
 #include <QObject>
 #include <QList>
@@ -124,5 +123,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // TEXTEDITOROVERLAY_H
diff --git a/src/plugins/texteditor/texteditorplugin.h b/src/plugins/texteditor/texteditorplugin.h
index f8486caa67..5cabb2fc95 100644
--- a/src/plugins/texteditor/texteditorplugin.h
+++ b/src/plugins/texteditor/texteditorplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORPLUGIN_H
-#define TEXTEDITORPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -88,5 +87,3 @@ private slots:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // TEXTEDITORPLUGIN_H
diff --git a/src/plugins/texteditor/texteditorsettings.h b/src/plugins/texteditor/texteditorsettings.h
index dd810de9d2..abbba3d314 100644
--- a/src/plugins/texteditor/texteditorsettings.h
+++ b/src/plugins/texteditor/texteditorsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TEXTEDITORSETTINGS_H
-#define TEXTEDITORSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -113,5 +112,3 @@ signals:
 };
 
 } // namespace TextEditor
-
-#endif // TEXTEDITORSETTINGS_H
diff --git a/src/plugins/texteditor/textmark.h b/src/plugins/texteditor/textmark.h
index 115f6c3cb3..8387de8c71 100644
--- a/src/plugins/texteditor/textmark.h
+++ b/src/plugins/texteditor/textmark.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TextMark_H
-#define TextMark_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -110,5 +109,3 @@ private:
 };
 
 } // namespace TextEditor
-
-#endif // TextMark_H
diff --git a/src/plugins/texteditor/textmarkregistry.h b/src/plugins/texteditor/textmarkregistry.h
index aa0acbbec1..33aa5edc40 100644
--- a/src/plugins/texteditor/textmarkregistry.h
+++ b/src/plugins/texteditor/textmarkregistry.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BASETEXTMARKREGISTRY_H
-#define BASETEXTMARKREGISTRY_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace TextEditor
-
-#endif // BASETEXTMARKREGISTRY_H
diff --git a/src/plugins/texteditor/typingsettings.h b/src/plugins/texteditor/typingsettings.h
index 50dfaf9389..f71fb3c6cc 100644
--- a/src/plugins/texteditor/typingsettings.h
+++ b/src/plugins/texteditor/typingsettings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TYPINGSETTINGS_H
-#define TYPINGSETTINGS_H
+#pragma once
 
 #include "texteditor_global.h"
 
@@ -78,5 +77,3 @@ inline bool operator!=(const TypingSettings &t1, const TypingSettings &t2) { ret
 } // namespace TextEditor
 
 Q_DECLARE_METATYPE(TextEditor::TypingSettings)
-
-#endif // TYPINGSETTINGS_H
diff --git a/src/plugins/todo/constants.h b/src/plugins/todo/constants.h
index 4a4ab5ac00..b4598dd0b9 100644
--- a/src/plugins/todo/constants.h
+++ b/src/plugins/todo/constants.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONSTANTS_H
-#define CONSTANTS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -71,5 +70,3 @@ const char OUTPUT_PANE_TITLE[] = QT_TRANSLATE_NOOP("Todo::Internal::TodoOutputPa
 
 } // namespace Constants
 } // namespace Todo
-
-#endif // CONSTANTS_H
diff --git a/src/plugins/todo/cpptodoitemsscanner.h b/src/plugins/todo/cpptodoitemsscanner.h
index 8d02420b14..966976d054 100644
--- a/src/plugins/todo/cpptodoitemsscanner.h
+++ b/src/plugins/todo/cpptodoitemsscanner.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPPTODOITEMSSCANNER_H
-#define CPPTODOITEMSSCANNER_H
+#pragma once
 
 #include "todoitemsscanner.h"
 
@@ -53,5 +52,3 @@ private:
 
 }
 }
-
-#endif // CPPTODOITEMSSCANNER_H
diff --git a/src/plugins/todo/keyword.h b/src/plugins/todo/keyword.h
index f763f38a35..170cbfa5f2 100644
--- a/src/plugins/todo/keyword.h
+++ b/src/plugins/todo/keyword.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef KEYWORD_H
-#define KEYWORD_H
+#pragma once
 
 #include "todoicons.h"
 
@@ -55,5 +54,3 @@ bool operator !=(Keyword &k1, Keyword &k2);
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // KEYWORD_H
diff --git a/src/plugins/todo/keyworddialog.h b/src/plugins/todo/keyworddialog.h
index a0e5005a92..b6e8a775d0 100644
--- a/src/plugins/todo/keyworddialog.h
+++ b/src/plugins/todo/keyworddialog.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef KEYWORDDIALOG_H
-#define KEYWORDDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include <QSet>
@@ -67,5 +66,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // KEYWORDDIALOG_H
diff --git a/src/plugins/todo/lineparser.h b/src/plugins/todo/lineparser.h
index 12c20ba52f..8d5c3bed1e 100644
--- a/src/plugins/todo/lineparser.h
+++ b/src/plugins/todo/lineparser.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LINEPARSER_H
-#define LINEPARSER_H
+#pragma once
 
 #include "keyword.h"
 #include "todoitem.h"
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // LINEPARSER_H
diff --git a/src/plugins/todo/optionsdialog.h b/src/plugins/todo/optionsdialog.h
index 41f774a303..7754caae8d 100644
--- a/src/plugins/todo/optionsdialog.h
+++ b/src/plugins/todo/optionsdialog.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPTIONSDIALOG_H
-#define OPTIONSDIALOG_H
+#pragma once
 
 #include <QWidget>
 
@@ -71,5 +70,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // OPTIONSDIALOG_H
diff --git a/src/plugins/todo/optionspage.h b/src/plugins/todo/optionspage.h
index d1afe9eeba..f38f778787 100644
--- a/src/plugins/todo/optionspage.h
+++ b/src/plugins/todo/optionspage.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPTIONSPAGE_H
-#define OPTIONSPAGE_H
+#pragma once
 
 #include "settings.h"
 
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // OPTIONSPAGE_H
diff --git a/src/plugins/todo/qmljstodoitemsscanner.h b/src/plugins/todo/qmljstodoitemsscanner.h
index c8d9e10e0e..91b4aed678 100644
--- a/src/plugins/todo/qmljstodoitemsscanner.h
+++ b/src/plugins/todo/qmljstodoitemsscanner.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMLJSTODOITEMSSCANNER_H
-#define QMLJSTODOITEMSSCANNER_H
+#pragma once
 
 #include "todoitemsscanner.h"
 
@@ -54,4 +53,3 @@ private:
 
 }
 }
-#endif // QMLJSTODOITEMSSCANNER_H
diff --git a/src/plugins/todo/settings.h b/src/plugins/todo/settings.h
index 8b8e11e236..2966206633 100644
--- a/src/plugins/todo/settings.h
+++ b/src/plugins/todo/settings.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGS_H
-#define SETTINGS_H
+#pragma once
 
 #include "keyword.h"
 
@@ -57,5 +56,3 @@ bool operator !=(Settings &s1, Settings &s2);
 } // namespace Todo
 
 Q_DECLARE_METATYPE(Todo::Internal::ScanningScope)
-
-#endif // SETTINGS_H
diff --git a/src/plugins/todo/todoicons.h b/src/plugins/todo/todoicons.h
index 8889de45c9..721c81df82 100644
--- a/src/plugins/todo/todoicons.h
+++ b/src/plugins/todo/todoicons.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOICONS_H
-#define TODOICONS_H
+#pragma once
 
 #include <QIcon>
 
@@ -42,5 +41,3 @@ QIcon icon(IconType type);
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // TODOICONS_H
diff --git a/src/plugins/todo/todoitem.h b/src/plugins/todo/todoitem.h
index 67ce251720..0d17e1068e 100644
--- a/src/plugins/todo/todoitem.h
+++ b/src/plugins/todo/todoitem.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOITEM_H
-#define TODOITEM_H
+#pragma once
 
 #include "constants.h"
 #include "todoicons.h"
@@ -94,5 +93,3 @@ private:
 } // namespace Todo
 
 Q_DECLARE_METATYPE(Todo::Internal::TodoItem)
-
-#endif // TODOITEM_H
diff --git a/src/plugins/todo/todoitemsmodel.h b/src/plugins/todo/todoitemsmodel.h
index 10abbf5a28..e16422ee3a 100644
--- a/src/plugins/todo/todoitemsmodel.h
+++ b/src/plugins/todo/todoitemsmodel.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOITEMSMODEL_H
-#define TODOITEMSMODEL_H
+#pragma once
 
 #include "todoitem.h"
 
@@ -62,5 +61,3 @@ private:
 
 }
 }
-
-#endif // TODOITEMSMODEL_H
diff --git a/src/plugins/todo/todoitemsprovider.h b/src/plugins/todo/todoitemsprovider.h
index 4525df9262..2e946a7512 100644
--- a/src/plugins/todo/todoitemsprovider.h
+++ b/src/plugins/todo/todoitemsprovider.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOITEMSPROVIDER_H
-#define TODOITEMSPROVIDER_H
+#pragma once
 
 #include "todoitem.h"
 #include "settings.h"
@@ -93,5 +92,3 @@ private slots:
 
 }
 }
-
-#endif // TODOITEMSPROVIDER_H
diff --git a/src/plugins/todo/todoitemsscanner.h b/src/plugins/todo/todoitemsscanner.h
index b56d401bf7..75f1c6ac4c 100644
--- a/src/plugins/todo/todoitemsscanner.h
+++ b/src/plugins/todo/todoitemsscanner.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOITEMSSCANNER_H
-#define TODOITEMSSCANNER_H
+#pragma once
 
 #include "todoitem.h"
 #include "keyword.h"
@@ -60,5 +59,3 @@ protected:
 
 }
 }
-
-#endif // TODOITEMSSCANNER_H
diff --git a/src/plugins/todo/todooutputpane.h b/src/plugins/todo/todooutputpane.h
index c8e5d88439..91a05eea31 100644
--- a/src/plugins/todo/todooutputpane.h
+++ b/src/plugins/todo/todooutputpane.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOOUTPUTPANE_H
-#define TODOOUTPUTPANE_H
+#pragma once
 
 #include "settings.h"
 
@@ -101,5 +100,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // TODOOUTPUTPANE_H
diff --git a/src/plugins/todo/todooutputtreeview.h b/src/plugins/todo/todooutputtreeview.h
index 4e47f2f411..50329c5e57 100644
--- a/src/plugins/todo/todooutputtreeview.h
+++ b/src/plugins/todo/todooutputtreeview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODO_INTERNAL_TODOOUTPUTTREEVIEW_H
-#define TODO_INTERNAL_TODOOUTPUTTREEVIEW_H
+#pragma once
 
 #include <utils/itemviews.h>
 
@@ -53,5 +52,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // TODO_INTERNAL_TODOOUTPUTTREEVIEW_H
diff --git a/src/plugins/todo/todooutputtreeviewdelegate.h b/src/plugins/todo/todooutputtreeviewdelegate.h
index 605745dca7..28f1fa8db6 100644
--- a/src/plugins/todo/todooutputtreeviewdelegate.h
+++ b/src/plugins/todo/todooutputtreeviewdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODO_INTERNAL_TODOOUTPUTTREEVIEWDELEGATE_H
-#define TODO_INTERNAL_TODOOUTPUTTREEVIEWDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -41,5 +40,3 @@ public:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // TODO_INTERNAL_TODOOUTPUTTREEVIEWDELEGATE_H
diff --git a/src/plugins/todo/todoplugin.h b/src/plugins/todo/todoplugin.h
index 9a61487121..8733f3bfc9 100644
--- a/src/plugins/todo/todoplugin.h
+++ b/src/plugins/todo/todoplugin.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODOPLUGIN_H
-#define TODOPLUGIN_H
+#pragma once
 
 #include "settings.h"
 
@@ -69,6 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-
-#endif // TODOPLUGIN_H
-
diff --git a/src/plugins/todo/todoprojectsettingswidget.h b/src/plugins/todo/todoprojectsettingswidget.h
index fbf5c89b87..c6e7204df6 100644
--- a/src/plugins/todo/todoprojectsettingswidget.h
+++ b/src/plugins/todo/todoprojectsettingswidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TODO_INTERNAL_TODOPROJECTSETTINGSWIDGET_H
-#define TODO_INTERNAL_TODOPROJECTSETTINGSWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -73,4 +72,3 @@ private:
 
 } // namespace Internal
 } // namespace Todo
-#endif // TODO_INTERNAL_TODOPROJECTSETTINGSWIDGET_H
diff --git a/src/plugins/updateinfo/settingspage.h b/src/plugins/updateinfo/settingspage.h
index 927cd3659d..bb2c7adaa9 100644
--- a/src/plugins/updateinfo/settingspage.h
+++ b/src/plugins/updateinfo/settingspage.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGSPAGE_H
-#define SETTINGSPAGE_H
+#pragma once
 
 #include "ui_settingspage.h"
 #include "updateinfoplugin.h"
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace UpdateInfo
-
-#endif // SETTINGSPAGE_H
diff --git a/src/plugins/updateinfo/updateinfoplugin.h b/src/plugins/updateinfo/updateinfoplugin.h
index 0c0e3af7ae..689d1baecf 100644
--- a/src/plugins/updateinfo/updateinfoplugin.h
+++ b/src/plugins/updateinfo/updateinfoplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UPDATEINFOPLUGIN_H
-#define UPDATEINFOPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -97,5 +96,3 @@ private:
 
 } // namespace Internal
 } // namespace UpdateInfo
-
-#endif // UPDATEINFOPLUGIN_H
diff --git a/src/plugins/valgrind/callgrind/callgrindabstractmodel.h b/src/plugins/valgrind/callgrind/callgrindabstractmodel.h
index 8aa8866af6..4730308c08 100644
--- a/src/plugins/valgrind/callgrind/callgrindabstractmodel.h
+++ b/src/plugins/valgrind/callgrind/callgrindabstractmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRINDABSTRACTMODEL_H
-#define LIBVALGRIND_CALLGRINDABSTRACTMODEL_H
+#pragma once
 
 #include <QAbstractItemView>
 
@@ -43,5 +42,3 @@ enum AbstractModelRoles
 
 } // Callgrind
 } // Valgrind
-
-#endif // LIBVALGRIND_CALLGRINDABSTRACTMODEL_H
diff --git a/src/plugins/valgrind/callgrind/callgrindcallmodel.h b/src/plugins/valgrind/callgrind/callgrindcallmodel.h
index a297f7f9de..d420abb33b 100644
--- a/src/plugins/valgrind/callgrind/callgrindcallmodel.h
+++ b/src/plugins/valgrind/callgrind/callgrindcallmodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_CALLGRIND_CALLGRINDCALLMODEL_H
-#define VALGRIND_CALLGRIND_CALLGRINDCALLMODEL_H
+#pragma once
 
 #include <QAbstractItemModel>
 
@@ -86,5 +85,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // VALGRIND_CALLGRIND_CALLGRINDCALLMODEL_H
diff --git a/src/plugins/valgrind/callgrind/callgrindcontroller.h b/src/plugins/valgrind/callgrind/callgrindcontroller.h
index 4e73c12f1c..373b4c87a0 100644
--- a/src/plugins/valgrind/callgrind/callgrindcontroller.h
+++ b/src/plugins/valgrind/callgrind/callgrindcontroller.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDCONTROLLER_H
-#define CALLGRINDCONTROLLER_H
+#pragma once
 
 #include <QObject>
 
@@ -105,5 +104,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // CALLGRINDCONTROLLER_H
diff --git a/src/plugins/valgrind/callgrind/callgrindcostitem.h b/src/plugins/valgrind/callgrind/callgrindcostitem.h
index d50d861b25..68843f44b7 100644
--- a/src/plugins/valgrind/callgrind/callgrindcostitem.h
+++ b/src/plugins/valgrind/callgrind/callgrindcostitem.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRIND_COSTITEM_H
-#define LIBVALGRIND_CALLGRIND_COSTITEM_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -92,5 +91,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_CALLGRIND_COSTITEM_H
diff --git a/src/plugins/valgrind/callgrind/callgrindcycledetection.h b/src/plugins/valgrind/callgrind/callgrindcycledetection.h
index 07b0281384..4894e7227f 100644
--- a/src/plugins/valgrind/callgrind/callgrindcycledetection.h
+++ b/src/plugins/valgrind/callgrind/callgrindcycledetection.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRINDCYCLEDETECTION_H
-#define LIBVALGRIND_CALLGRINDCYCLEDETECTION_H
+#pragma once
 
 #include <QHash>
 #include <QStack>
@@ -75,5 +74,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_CALLGRINDCYCLEDETECTION_H
diff --git a/src/plugins/valgrind/callgrind/callgrinddatamodel.h b/src/plugins/valgrind/callgrind/callgrinddatamodel.h
index 43b8dbef23..3daaf77d39 100644
--- a/src/plugins/valgrind/callgrind/callgrinddatamodel.h
+++ b/src/plugins/valgrind/callgrind/callgrinddatamodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_CALLGRIND_CALLGRINDDATAMODEL_H
-#define VALGRIND_CALLGRIND_CALLGRINDDATAMODEL_H
+#pragma once
 
 #include "callgrindabstractmodel.h"
 
@@ -95,5 +94,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // VALGRIND_CALLGRIND_CALLGRINDDATAMODEL_H
diff --git a/src/plugins/valgrind/callgrind/callgrindfunction.h b/src/plugins/valgrind/callgrind/callgrindfunction.h
index 5d0e9faefe..fd35b5b7e7 100644
--- a/src/plugins/valgrind/callgrind/callgrindfunction.h
+++ b/src/plugins/valgrind/callgrind/callgrindfunction.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRIND_FUNCTION_H
-#define LIBVALGRIND_CALLGRIND_FUNCTION_H
+#pragma once
 
 #include <QMetaType>
 #include <QVector>
@@ -145,5 +144,3 @@ private:
 } // namespace Valgrind
 
 Q_DECLARE_METATYPE(const Valgrind::Callgrind::Function *)
-
-#endif // LIBVALGRIND_CALLGRIND_FUNCTION_H
diff --git a/src/plugins/valgrind/callgrind/callgrindfunction_p.h b/src/plugins/valgrind/callgrind/callgrindfunction_p.h
index 9563d42650..8bcc2d246c 100644
--- a/src/plugins/valgrind/callgrind/callgrindfunction_p.h
+++ b/src/plugins/valgrind/callgrind/callgrindfunction_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRINDFUNCTION_P_H
-#define LIBVALGRIND_CALLGRINDFUNCTION_P_H
+#pragma once
 
 #include "callgrindfunction.h"
 #include "callgrindparsedata.h"
@@ -71,5 +70,3 @@ public:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_CALLGRINDFUNCTION_P_H
diff --git a/src/plugins/valgrind/callgrind/callgrindfunctioncall.h b/src/plugins/valgrind/callgrind/callgrindfunctioncall.h
index 2f45cb1a26..0c860308aa 100644
--- a/src/plugins/valgrind/callgrind/callgrindfunctioncall.h
+++ b/src/plugins/valgrind/callgrind/callgrindfunctioncall.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDFUNCTIONCALL_H
-#define CALLGRINDFUNCTIONCALL_H
+#pragma once
 
 #include <QMetaType>
 
@@ -85,5 +84,3 @@ private:
 } // namespace Valgrind
 
 Q_DECLARE_METATYPE(const Valgrind::Callgrind::FunctionCall *)
-
-#endif // CALLGRINDFUNCTIONCALL_H
diff --git a/src/plugins/valgrind/callgrind/callgrindfunctioncycle.h b/src/plugins/valgrind/callgrind/callgrindfunctioncycle.h
index 4a0218cc9a..38221b998d 100644
--- a/src/plugins/valgrind/callgrind/callgrindfunctioncycle.h
+++ b/src/plugins/valgrind/callgrind/callgrindfunctioncycle.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRINDFUNCTIONCYCLE_H
-#define LIBVALGRIND_CALLGRINDFUNCTIONCYCLE_H
+#pragma once
 
 #include "callgrindfunction.h"
 
@@ -57,5 +56,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_CALLGRINDFUNCTIONCYCLE_H
diff --git a/src/plugins/valgrind/callgrind/callgrindparsedata.h b/src/plugins/valgrind/callgrind/callgrindparsedata.h
index 8943a231d7..4c1ba186f9 100644
--- a/src/plugins/valgrind/callgrind/callgrindparsedata.h
+++ b/src/plugins/valgrind/callgrind/callgrindparsedata.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRIND_PARSEDATA_P_H
-#define LIBVALGRIND_CALLGRIND_PARSEDATA_P_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -135,5 +134,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_CALLGRIND_PARSEDATA_P_H
diff --git a/src/plugins/valgrind/callgrind/callgrindparser.h b/src/plugins/valgrind/callgrind/callgrindparser.h
index a5c8072563..2b36da5e4c 100644
--- a/src/plugins/valgrind/callgrind/callgrindparser.h
+++ b/src/plugins/valgrind/callgrind/callgrindparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_CALLGRIND_PARSER_H
-#define LIBVALGRIND_CALLGRIND_PARSER_H
+#pragma once
 
 #include <QObject>
 
@@ -71,5 +70,3 @@ private:
 
 } // Callgrind
 } // Valgrind
-
-#endif // LIBVALGRIND_CALLGRIND_PARSER_H
diff --git a/src/plugins/valgrind/callgrind/callgrindproxymodel.h b/src/plugins/valgrind/callgrind/callgrindproxymodel.h
index 2dceeb1497..d8f17d883f 100644
--- a/src/plugins/valgrind/callgrind/callgrindproxymodel.h
+++ b/src/plugins/valgrind/callgrind/callgrindproxymodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_CALLGRIND_CALLGRINDPROXYMODEL_H
-#define VALGRIND_CALLGRIND_CALLGRINDPROXYMODEL_H
+#pragma once
 
 #include <QSortFilterProxyModel>
 
@@ -78,5 +77,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // VALGRIND_CALLGRIND_CALLGRINDPROXYMODEL_H
diff --git a/src/plugins/valgrind/callgrind/callgrindrunner.h b/src/plugins/valgrind/callgrind/callgrindrunner.h
index b8299c5485..81c3e76da3 100644
--- a/src/plugins/valgrind/callgrind/callgrindrunner.h
+++ b/src/plugins/valgrind/callgrind/callgrindrunner.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_CALLGRIND_CALLGRINDRUNNER_H
-#define VALGRIND_CALLGRIND_CALLGRINDRUNNER_H
+#pragma once
 
 #include "../valgrindrunner.h"
 
@@ -68,5 +67,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // VALGRIND_CALLGRIND_CALLGRINDRUNNER_H
diff --git a/src/plugins/valgrind/callgrind/callgrindstackbrowser.h b/src/plugins/valgrind/callgrind/callgrindstackbrowser.h
index a61a522920..35f91bc5ca 100644
--- a/src/plugins/valgrind/callgrind/callgrindstackbrowser.h
+++ b/src/plugins/valgrind/callgrind/callgrindstackbrowser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDSTACKBROWSER_H
-#define CALLGRINDSTACKBROWSER_H
+#pragma once
 
 #include <QObject>
 #include <QStack>
@@ -61,5 +60,3 @@ private:
 
 } // namespace Callgrind
 } // namespace Valgrind
-
-#endif // CALLGRINDSTACKBROWSER_H
diff --git a/src/plugins/valgrind/callgrindcostdelegate.h b/src/plugins/valgrind/callgrindcostdelegate.h
index 851e5ac08f..3c0e453b92 100644
--- a/src/plugins/valgrind/callgrindcostdelegate.h
+++ b/src/plugins/valgrind/callgrindcostdelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDCOSTDELEGATE_H
-#define CALLGRINDCOSTDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -64,5 +63,3 @@ private:
 } // namespace Valgrind
 
 Q_DECLARE_METATYPE(Valgrind::Internal::CostDelegate::CostFormat)
-
-#endif // CALLGRINDCOSTDELEGATE_H
diff --git a/src/plugins/valgrind/callgrindcostview.h b/src/plugins/valgrind/callgrindcostview.h
index 963a2b15d3..fb4b2a72ae 100644
--- a/src/plugins/valgrind/callgrindcostview.h
+++ b/src/plugins/valgrind/callgrindcostview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDCOSTVIEW_H
-#define CALLGRINDCOSTVIEW_H
+#pragma once
 
 #include "callgrindcostdelegate.h"
 
@@ -63,5 +62,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // CALLGRINDCOSTVIEW_H
diff --git a/src/plugins/valgrind/callgrindengine.h b/src/plugins/valgrind/callgrindengine.h
index 19e91a95b4..ae5696e157 100644
--- a/src/plugins/valgrind/callgrindengine.h
+++ b/src/plugins/valgrind/callgrindengine.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDENGINE_H
-#define CALLGRINDENGINE_H
+#pragma once
 
 #include <valgrind/valgrindengine.h>
 
@@ -79,5 +78,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // CALLGRINDENGINE_H
diff --git a/src/plugins/valgrind/callgrindhelper.h b/src/plugins/valgrind/callgrindhelper.h
index 92fa9a81ff..8d5898a2c5 100644
--- a/src/plugins/valgrind/callgrindhelper.h
+++ b/src/plugins/valgrind/callgrindhelper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDHELPER_H
-#define CALLGRINDHELPER_H
+#pragma once
 
 #include <QLocale>
 
@@ -57,5 +56,3 @@ namespace CallgrindHelper
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // CALLGRINDHELPER_H
diff --git a/src/plugins/valgrind/callgrindnamedelegate.h b/src/plugins/valgrind/callgrindnamedelegate.h
index 4e168fb8cf..2533e46a94 100644
--- a/src/plugins/valgrind/callgrindnamedelegate.h
+++ b/src/plugins/valgrind/callgrindnamedelegate.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDNAMEDELEGATE_H
-#define CALLGRINDNAMEDELEGATE_H
+#pragma once
 
 #include <QStyledItemDelegate>
 
@@ -42,5 +41,3 @@ public:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // CALLGRINDNAMEDELEGATE_H
diff --git a/src/plugins/valgrind/callgrindtextmark.h b/src/plugins/valgrind/callgrindtextmark.h
index 495ab5fc82..f5f1699a25 100644
--- a/src/plugins/valgrind/callgrindtextmark.h
+++ b/src/plugins/valgrind/callgrindtextmark.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDTEXTMARK_H
-#define CALLGRINDTEXTMARK_H
+#pragma once
 
 #include <texteditor/textmark.h>
 
@@ -58,5 +57,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // CALLGRINDTEXTMARK_H
diff --git a/src/plugins/valgrind/callgrindtool.h b/src/plugins/valgrind/callgrindtool.h
index e7df17db86..c0618366c7 100644
--- a/src/plugins/valgrind/callgrindtool.h
+++ b/src/plugins/valgrind/callgrindtool.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDTOOL_H
-#define CALLGRINDTOOL_H
+#pragma once
 
 #include <QObject>
 
@@ -46,5 +45,3 @@ void destroyCallgrindTool();
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // CALLGRINDTOOL_H
diff --git a/src/plugins/valgrind/callgrindvisualisation.h b/src/plugins/valgrind/callgrindvisualisation.h
index a1763c8259..ee920b7470 100644
--- a/src/plugins/valgrind/callgrindvisualisation.h
+++ b/src/plugins/valgrind/callgrindvisualisation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CALLGRINDVISUALISATION_H
-#define CALLGRINDVISUALISATION_H
+#pragma once
 
 #include <QGraphicsView>
 
@@ -80,5 +79,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // VALGRIND_CALLGRIND_CALLGRINDVISUALISATION_H
diff --git a/src/plugins/valgrind/memcheck/memcheckrunner.h b/src/plugins/valgrind/memcheck/memcheckrunner.h
index 7bdef65d3e..ec092ffc13 100644
--- a/src/plugins/valgrind/memcheck/memcheckrunner.h
+++ b/src/plugins/valgrind/memcheck/memcheckrunner.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_PROTOCOL_MEMCHECKRUNNER_H
-#define VALGRIND_PROTOCOL_MEMCHECKRUNNER_H
+#pragma once
 
 #include "../valgrindrunner.h"
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Memcheck
 } // namespace Valgrind
-
-#endif // VALGRIND_PROTOCOL_MEMCHECKRUNNER_H
diff --git a/src/plugins/valgrind/memcheckengine.h b/src/plugins/valgrind/memcheckengine.h
index b619aa9669..6455065d35 100644
--- a/src/plugins/valgrind/memcheckengine.h
+++ b/src/plugins/valgrind/memcheckengine.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef MEMCHECKENGINE_H
-#define MEMCHECKENGINE_H
+#pragma once
 
 #include "valgrindengine.h"
 
@@ -78,5 +77,3 @@ protected:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // MEMCHECKENGINE_H
diff --git a/src/plugins/valgrind/memcheckerrorview.h b/src/plugins/valgrind/memcheckerrorview.h
index 205c723841..244f7df157 100644
--- a/src/plugins/valgrind/memcheckerrorview.h
+++ b/src/plugins/valgrind/memcheckerrorview.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef MEMCHECKERRORVIEW_H
-#define MEMCHECKERRORVIEW_H
+#pragma once
 
 #include <debugger/analyzer/detailederrorview.h>
 
@@ -64,5 +63,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // MEMCHECKERRORVIEW_H
diff --git a/src/plugins/valgrind/memchecktool.h b/src/plugins/valgrind/memchecktool.h
index 1ea57b9778..8a6bdd95f3 100644
--- a/src/plugins/valgrind/memchecktool.h
+++ b/src/plugins/valgrind/memchecktool.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef MEMCHECKTOOL_H
-#define MEMCHECKTOOL_H
+#pragma once
 
 #include <QObject>
 
@@ -44,5 +43,3 @@ void destroyMemcheckTool();
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // MEMCHECKTOOL_H
diff --git a/src/plugins/valgrind/suppressiondialog.h b/src/plugins/valgrind/suppressiondialog.h
index b4effe3324..70a5ee7ff2 100644
--- a/src/plugins/valgrind/suppressiondialog.h
+++ b/src/plugins/valgrind/suppressiondialog.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZER_VALGRIND_SUPPRESSIONDIALOG_H
-#define ANALYZER_VALGRIND_SUPPRESSIONDIALOG_H
+#pragma once
 
 #include "xmlprotocol/error.h"
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // ANALYZER_VALGRIND_SUPPRESSIONDIALOG_H
diff --git a/src/plugins/valgrind/valgrindconfigwidget.h b/src/plugins/valgrind/valgrindconfigwidget.h
index 7352bc22bd..5f31a28d4e 100644
--- a/src/plugins/valgrind/valgrindconfigwidget.h
+++ b/src/plugins/valgrind/valgrindconfigwidget.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZER_VALGRINDCONFIGWIDGET_H
-#define ANALYZER_VALGRINDCONFIGWIDGET_H
+#pragma once
 
 #include <QWidget>
 
@@ -69,5 +68,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // ANALYZER_VALGRINDCONFIGWIDGET_H
diff --git a/src/plugins/valgrind/valgrindengine.h b/src/plugins/valgrind/valgrindengine.h
index fa9ffcc91a..28eab84efb 100644
--- a/src/plugins/valgrind/valgrindengine.h
+++ b/src/plugins/valgrind/valgrindengine.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRINDENGINE_H
-#define VALGRINDENGINE_H
+#pragma once
 
 #include <debugger/analyzer/analyzerruncontrol.h>
 #include <utils/environment.h>
@@ -77,5 +76,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // VALGRINDENGINE_H
diff --git a/src/plugins/valgrind/valgrindplugin.h b/src/plugins/valgrind/valgrindplugin.h
index f402e4c2ba..b3f8cd2bd6 100644
--- a/src/plugins/valgrind/valgrindplugin.h
+++ b/src/plugins/valgrind/valgrindplugin.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRINDPLUGIN_H
-#define VALGRINDPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 #include <projectexplorer/projectexplorer.h>
@@ -53,5 +52,3 @@ public:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // VALGRINDPLUGIN_H
diff --git a/src/plugins/valgrind/valgrindprocess.h b/src/plugins/valgrind/valgrindprocess.h
index 0d04a4093e..44da14afa2 100644
--- a/src/plugins/valgrind/valgrindprocess.h
+++ b/src/plugins/valgrind/valgrindprocess.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRINDPROCESS_H
-#define VALGRINDPROCESS_H
+#pragma once
 
 #include <projectexplorer/applicationlauncher.h>
 #include <projectexplorer/devicesupport/idevice.h>
@@ -108,5 +107,3 @@ private:
 };
 
 } // namespace Valgrind
-
-#endif // VALGRINDPROCESS_H
diff --git a/src/plugins/valgrind/valgrindruncontrolfactory.h b/src/plugins/valgrind/valgrindruncontrolfactory.h
index 65d618dae0..b3e74646d1 100644
--- a/src/plugins/valgrind/valgrindruncontrolfactory.h
+++ b/src/plugins/valgrind/valgrindruncontrolfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRINDRUNCONTROLFACTORY_H
-#define VALGRINDRUNCONTROLFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -49,5 +48,3 @@ public:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // VALGRINDRUNCONTROLFACTORY_H
diff --git a/src/plugins/valgrind/valgrindrunner.h b/src/plugins/valgrind/valgrindrunner.h
index 637f436ad0..6446209219 100644
--- a/src/plugins/valgrind/valgrindrunner.h
+++ b/src/plugins/valgrind/valgrindrunner.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_RUNNER_H
-#define VALGRIND_RUNNER_H
+#pragma once
 
 #include <debugger/analyzer/analyzerconstants.h>
 
@@ -87,5 +86,3 @@ private:
 };
 
 } // namespace Valgrind
-
-#endif // VALGRIND_RUNNER_H
diff --git a/src/plugins/valgrind/valgrindsettings.h b/src/plugins/valgrind/valgrindsettings.h
index c66a28c51f..252b819134 100644
--- a/src/plugins/valgrind/valgrindsettings.h
+++ b/src/plugins/valgrind/valgrindsettings.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef ANALYZER_INTERNAL_VALGRINDSETTINGS_H
-#define ANALYZER_INTERNAL_VALGRINDSETTINGS_H
+#pragma once
 
 #include "callgrindcostdelegate.h"
 #include <projectexplorer/runconfiguration.h>
@@ -275,5 +274,3 @@ private:
 
 } // namespace Internal
 } // namespace Valgrind
-
-#endif // VALGRIND_INTERNAL_ANALZYZERSETTINGS_H
diff --git a/src/plugins/valgrind/workarounds.h b/src/plugins/valgrind/workarounds.h
index ff2c4cff3b..e65c8cca69 100644
--- a/src/plugins/valgrind/workarounds.h
+++ b/src/plugins/valgrind/workarounds.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WORKAROUNDS_H
-#define WORKAROUNDS_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -34,5 +33,3 @@ QT_END_NAMESPACE
 
 ///FIXME: remove this once https://bugreports.qt.io/browse/QTCREATORBUG-3247 gets fixed
 QPalette panelPalette(const QPalette &oldPalette, bool lightColored = false);
-
-#endif // WORKAROUNDS_H
diff --git a/src/plugins/valgrind/xmlprotocol/announcethread.h b/src/plugins/valgrind/xmlprotocol/announcethread.h
index 7be6ca5f05..6219c98a48 100644
--- a/src/plugins/valgrind/xmlprotocol/announcethread.h
+++ b/src/plugins/valgrind/xmlprotocol/announcethread.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_ANNOUNCETHREAD_H
-#define LIBVALGRIND_PROTOCOL_ANNOUNCETHREAD_H
+#pragma once
 
 #include <QSharedDataPointer>
 
@@ -60,5 +59,3 @@ private:
 
 } // namespace XmlProtocol
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_PROTOCOL_ANNOUNCETHREAD_H
diff --git a/src/plugins/valgrind/xmlprotocol/error.h b/src/plugins/valgrind/xmlprotocol/error.h
index 67fbca5953..f7b56f301f 100644
--- a/src/plugins/valgrind/xmlprotocol/error.h
+++ b/src/plugins/valgrind/xmlprotocol/error.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_ERROR_H
-#define LIBVALGRIND_PROTOCOL_ERROR_H
+#pragma once
 
 #include <QMetaType>
 #include <QSharedDataPointer>
@@ -138,5 +137,3 @@ private:
 } // namespace Valgrind
 
 Q_DECLARE_METATYPE(Valgrind::XmlProtocol::Error)
-
-#endif // LIBVALGRIND_PROTOCOL_ERROR_H
diff --git a/src/plugins/valgrind/xmlprotocol/errorlistmodel.h b/src/plugins/valgrind/xmlprotocol/errorlistmodel.h
index ec7f5de61c..020c08dd4b 100644
--- a/src/plugins/valgrind/xmlprotocol/errorlistmodel.h
+++ b/src/plugins/valgrind/xmlprotocol/errorlistmodel.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_ERRORLISTMODEL_H
-#define LIBVALGRIND_PROTOCOL_ERRORLISTMODEL_H
+#pragma once
 
 #include <debugger/analyzer/detailederrorview.h>
 #include <utils/treemodel.h>
@@ -70,5 +69,3 @@ private:
 
 } // namespace XmlProtocol
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_PROTOCOL_ERRORLISTMODEL_H
diff --git a/src/plugins/valgrind/xmlprotocol/frame.h b/src/plugins/valgrind/xmlprotocol/frame.h
index 4cd9836ce6..151c815898 100644
--- a/src/plugins/valgrind/xmlprotocol/frame.h
+++ b/src/plugins/valgrind/xmlprotocol/frame.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_FRAME_H
-#define LIBVALGRIND_PROTOCOL_FRAME_H
+#pragma once
 
 #include <QSharedDataPointer>
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace XmlProtocol
 } // namespace Valgrind
-
-#endif
diff --git a/src/plugins/valgrind/xmlprotocol/modelhelpers.h b/src/plugins/valgrind/xmlprotocol/modelhelpers.h
index 2c1bdba79c..7f0bef922a 100644
--- a/src/plugins/valgrind/xmlprotocol/modelhelpers.h
+++ b/src/plugins/valgrind/xmlprotocol/modelhelpers.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_MODELHELPERS_H
-#define LIBVALGRIND_PROTOCOL_MODELHELPERS_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -42,5 +41,3 @@ QString toolTipForFrame(const Frame &frame);
 
 } // namespace XmlProtocol
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_PROTOCOL_MODELHELPERS_H
diff --git a/src/plugins/valgrind/xmlprotocol/parser.h b/src/plugins/valgrind/xmlprotocol/parser.h
index 76eea29135..4ed7d82028 100644
--- a/src/plugins/valgrind/xmlprotocol/parser.h
+++ b/src/plugins/valgrind/xmlprotocol/parser.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_PARSER_H
-#define LIBVALGRIND_PROTOCOL_PARSER_H
+#pragma once
 
 #include <QObject>
 
@@ -79,5 +78,3 @@ private:
 
 } // XmlProtocol
 } // Valgrind
-
-#endif //LIBVALGRIND_PROTOCOL_PARSER_H
diff --git a/src/plugins/valgrind/xmlprotocol/stack.h b/src/plugins/valgrind/xmlprotocol/stack.h
index daec25b94a..5fd5d3c070 100644
--- a/src/plugins/valgrind/xmlprotocol/stack.h
+++ b/src/plugins/valgrind/xmlprotocol/stack.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef VALGRIND_PROTOCOL_STACK_H
-#define VALGRIND_PROTOCOL_STACK_H
+#pragma once
 
 #include <QSharedDataPointer>
 
@@ -75,5 +74,3 @@ private:
 
 } // namespace XmlProtocol
 } // namespace Stack
-
-#endif // VALGRIND_PROTOCOL_STACK_H
diff --git a/src/plugins/valgrind/xmlprotocol/stackmodel.h b/src/plugins/valgrind/xmlprotocol/stackmodel.h
index 425a8468e0..a948b13bdc 100644
--- a/src/plugins/valgrind/xmlprotocol/stackmodel.h
+++ b/src/plugins/valgrind/xmlprotocol/stackmodel.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_STACKMODEL_H
-#define LIBVALGRIND_PROTOCOL_STACKMODEL_H
+#pragma once
 
 #include <QAbstractItemModel>
 
@@ -79,5 +78,3 @@ private:
 
 } // namespace XmlProtocol
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_PROTOCOL_STACKMODEL_H
diff --git a/src/plugins/valgrind/xmlprotocol/status.h b/src/plugins/valgrind/xmlprotocol/status.h
index 9721a0ea79..b0ea47de09 100644
--- a/src/plugins/valgrind/xmlprotocol/status.h
+++ b/src/plugins/valgrind/xmlprotocol/status.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_STATUS_H
-#define LIBVALGRIND_PROTOCOL_STATUS_H
+#pragma once
 
 #include <QMetaType>
 #include <QSharedDataPointer>
@@ -63,5 +62,3 @@ private:
 } // namespace Valgrind
 
 Q_DECLARE_METATYPE(Valgrind::XmlProtocol::Status)
-
-#endif // LIBVALGRIND_PROTOCOL_STATUS_H
diff --git a/src/plugins/valgrind/xmlprotocol/suppression.h b/src/plugins/valgrind/xmlprotocol/suppression.h
index 7712c71bb1..3536db1a94 100644
--- a/src/plugins/valgrind/xmlprotocol/suppression.h
+++ b/src/plugins/valgrind/xmlprotocol/suppression.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_SUPPRESSION_H
-#define LIBVALGRIND_PROTOCOL_SUPPRESSION_H
+#pragma once
 
 #include <QSharedDataPointer>
 
@@ -103,5 +102,3 @@ private:
 
 } // namespace XmlProtocol
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_PROTOCOL_SUPPRESSION_H
diff --git a/src/plugins/valgrind/xmlprotocol/threadedparser.h b/src/plugins/valgrind/xmlprotocol/threadedparser.h
index 3bd6817c8a..5e74949474 100644
--- a/src/plugins/valgrind/xmlprotocol/threadedparser.h
+++ b/src/plugins/valgrind/xmlprotocol/threadedparser.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_PROTOCOL_THREADEDPARSER_H
-#define LIBVALGRIND_PROTOCOL_THREADEDPARSER_H
+#pragma once
 
 #include <QObject>
 
@@ -79,5 +78,3 @@ private:
 
 } // XmlProtocol
 } // Valgrind
-
-#endif //LIBVALGRIND_PROTOCOL_THREADEDPARSER_H
diff --git a/src/plugins/vcsbase/submitfilemodel.h b/src/plugins/vcsbase/submitfilemodel.h
index 31ef8cf267..d32345d5df 100644
--- a/src/plugins/vcsbase/submitfilemodel.h
+++ b/src/plugins/vcsbase/submitfilemodel.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SUBMITFILEMODEL_H
-#define SUBMITFILEMODEL_H
+#pragma once
 
 #include "vcsbase_global.h"
 
@@ -94,5 +93,3 @@ private:
 };
 
 } // namespace VcsBase
-
-#endif // SUBMITFILEMODEL_H
diff --git a/src/plugins/welcome/welcomeplugin.h b/src/plugins/welcome/welcomeplugin.h
index 4d75a43bee..fe05ee8a04 100644
--- a/src/plugins/welcome/welcomeplugin.h
+++ b/src/plugins/welcome/welcomeplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WELCOMEPLUGIN_H
-#define WELCOMEPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -54,5 +53,3 @@ private:
 
 } // namespace Welcome
 } // namespace Internal
-
-#endif // WELCOMEPLUGIN_H
diff --git a/src/plugins/winrt/winrtconstants.h b/src/plugins/winrt/winrtconstants.h
index 15898aee33..c36dc8d70d 100644
--- a/src/plugins/winrt/winrtconstants.h
+++ b/src/plugins/winrt/winrtconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTCONSTANTS_H
-#define WINRTCONSTANTS_H
+#pragma once
 
 namespace WinRt {
 namespace Internal {
@@ -45,5 +44,3 @@ const char WINRT_RC_PREFIX[] = "WinRt.WinRtRunConfiguration:";
 } // Constants
 } // Internal
 } // WinRt
-
-#endif // WINRTCONSTANTS_H
diff --git a/src/plugins/winrt/winrtdebugsupport.h b/src/plugins/winrt/winrtdebugsupport.h
index df8460ffa6..08a21dbf99 100644
--- a/src/plugins/winrt/winrtdebugsupport.h
+++ b/src/plugins/winrt/winrtdebugsupport.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRT_INTERNAL_WINRTDEBUGSUPPORT_H
-#define WINRT_INTERNAL_WINRTDEBUGSUPPORT_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -60,5 +59,3 @@ private slots:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRT_INTERNAL_WINRTDEBUGSUPPORT_H
diff --git a/src/plugins/winrt/winrtdeployconfiguration.h b/src/plugins/winrt/winrtdeployconfiguration.h
index 00a6d67ae6..96ac069dfe 100644
--- a/src/plugins/winrt/winrtdeployconfiguration.h
+++ b/src/plugins/winrt/winrtdeployconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTDEPLOYCONFIGURATION_H
-#define WINRTDEPLOYCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/deployconfiguration.h>
 #include <projectexplorer/buildstep.h>
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTDEPLOYCONFIGURATION_H
diff --git a/src/plugins/winrt/winrtdevice.h b/src/plugins/winrt/winrtdevice.h
index 5807223da1..1279cbcbe2 100644
--- a/src/plugins/winrt/winrtdevice.h
+++ b/src/plugins/winrt/winrtdevice.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTDEVICE_H
-#define WINRTDEVICE_H
+#pragma once
 
 #include <QList>
 #include <QUuid>
@@ -70,5 +69,3 @@ private:
 
 } // Internal
 } // WinRt
-
-#endif // WINRTDEVICE_H
diff --git a/src/plugins/winrt/winrtdevicefactory.h b/src/plugins/winrt/winrtdevicefactory.h
index a10a0c3240..edb938e806 100644
--- a/src/plugins/winrt/winrtdevicefactory.h
+++ b/src/plugins/winrt/winrtdevicefactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTDEVICEFACTORY_H
-#define WINRTDEVICEFACTORY_H
+#pragma once
 
 #include <projectexplorer/devicesupport/idevicefactory.h>
 #include <utils/qtcprocess.h>
@@ -63,5 +62,3 @@ private:
 
 } // Internal
 } // WinRt
-
-#endif // WINRTDEVICEFACTORY_H
diff --git a/src/plugins/winrt/winrtpackagedeploymentstep.h b/src/plugins/winrt/winrtpackagedeploymentstep.h
index 950d7a1217..f7a2cecfbf 100644
--- a/src/plugins/winrt/winrtpackagedeploymentstep.h
+++ b/src/plugins/winrt/winrtpackagedeploymentstep.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTPACKAGEDEPLOYMENTSTEP_H
-#define WINRTPACKAGEDEPLOYMENTSTEP_H
+#pragma once
 
 #include <projectexplorer/abstractprocessstep.h>
 
@@ -66,5 +65,3 @@ private:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTPACKAGEDEPLOYMENTSTEP_H
diff --git a/src/plugins/winrt/winrtpackagedeploymentstepwidget.h b/src/plugins/winrt/winrtpackagedeploymentstepwidget.h
index 0473b54c50..14be99b2dc 100644
--- a/src/plugins/winrt/winrtpackagedeploymentstepwidget.h
+++ b/src/plugins/winrt/winrtpackagedeploymentstepwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTPACKAGEDEPLOYMENTSTEPWIDGET_H
-#define WINRTPACKAGEDEPLOYMENTSTEPWIDGET_H
+#pragma once
 
 #include "winrtpackagedeploymentstep.h"
 
@@ -56,5 +55,3 @@ private:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTPACKAGEDEPLOYMENTSTEPWIDGET_H
diff --git a/src/plugins/winrt/winrtphoneqtversion.h b/src/plugins/winrt/winrtphoneqtversion.h
index ed28e3c225..bbb8bd9764 100644
--- a/src/plugins/winrt/winrtphoneqtversion.h
+++ b/src/plugins/winrt/winrtphoneqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTPHONEQTVERSION_H
-#define WINRTPHONEQTVERSION_H
+#pragma once
 
 #include "winrtqtversion.h"
 
@@ -47,5 +46,3 @@ public:
 
 } // Internal
 } // WinRt
-
-#endif // WINRTPHONEQTVERSION_H
diff --git a/src/plugins/winrt/winrtplugin.h b/src/plugins/winrt/winrtplugin.h
index acd4ecd43d..949eb3ba9a 100644
--- a/src/plugins/winrt/winrtplugin.h
+++ b/src/plugins/winrt/winrtplugin.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTPLUGIN_H
-#define WINRTPLUGIN_H
+#pragma once
 
 #include <extensionsystem/iplugin.h>
 
@@ -47,5 +46,3 @@ public:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTPLUGIN_H
diff --git a/src/plugins/winrt/winrtqtversion.h b/src/plugins/winrt/winrtqtversion.h
index 7fdb3a5399..f3a4fc9d3b 100644
--- a/src/plugins/winrt/winrtqtversion.h
+++ b/src/plugins/winrt/winrtqtversion.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTQTVERSION_H
-#define WINRTQTVERSION_H
+#pragma once
 
 #include <qtsupport/baseqtversion.h>
 
@@ -50,5 +49,3 @@ public:
 
 } // Internal
 } // WinRt
-
-#endif // WINRTQTVERSION_H
diff --git a/src/plugins/winrt/winrtqtversionfactory.h b/src/plugins/winrt/winrtqtversionfactory.h
index 67280ee29c..bc099372c9 100644
--- a/src/plugins/winrt/winrtqtversionfactory.h
+++ b/src/plugins/winrt/winrtqtversionfactory.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTQTVERSIONFACTORY_H
-#define WINRTQTVERSIONFACTORY_H
+#pragma once
 
 #include <qtsupport/qtversionfactory.h>
 
@@ -47,5 +46,3 @@ public:
 
 } // Internal
 } // WinRt
-
-#endif // WINRTQTVERSIONFACTORY_H
diff --git a/src/plugins/winrt/winrtrunconfiguration.h b/src/plugins/winrt/winrtrunconfiguration.h
index 593cc79dcc..bfff934ffb 100644
--- a/src/plugins/winrt/winrtrunconfiguration.h
+++ b/src/plugins/winrt/winrtrunconfiguration.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTRUNCONFIGURATION_H
-#define WINRTRUNCONFIGURATION_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 
@@ -61,5 +60,3 @@ private:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTRUNCONFIGURATION_H
diff --git a/src/plugins/winrt/winrtrunconfigurationwidget.h b/src/plugins/winrt/winrtrunconfigurationwidget.h
index 7f8b3cbecb..9f68d0bb5b 100644
--- a/src/plugins/winrt/winrtrunconfigurationwidget.h
+++ b/src/plugins/winrt/winrtrunconfigurationwidget.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTRUNCONFIGURATIONWIDGET_H
-#define WINRTRUNCONFIGURATIONWIDGET_H
+#pragma once
 
 #include <utils/detailswidget.h>
 
@@ -48,5 +47,3 @@ private:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTRUNCONFIGURATIONWIDGET_H
diff --git a/src/plugins/winrt/winrtruncontrol.h b/src/plugins/winrt/winrtruncontrol.h
index d1ff61804f..e7238d7cad 100644
--- a/src/plugins/winrt/winrtruncontrol.h
+++ b/src/plugins/winrt/winrtruncontrol.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTRUNCONTROL_H
-#define WINRTRUNCONTROL_H
+#pragma once
 
 #include "winrtdevice.h"
 
@@ -72,5 +71,3 @@ private:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTRUNCONTROL_H
diff --git a/src/plugins/winrt/winrtrunfactories.h b/src/plugins/winrt/winrtrunfactories.h
index 09b8986828..59a35ff3a6 100644
--- a/src/plugins/winrt/winrtrunfactories.h
+++ b/src/plugins/winrt/winrtrunfactories.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTRUNCONFIGURATIONFACTORY_H
-#define WINRTRUNCONFIGURATIONFACTORY_H
+#pragma once
 
 #include <projectexplorer/runconfiguration.h>
 #include <projectexplorer/devicesupport/idevicefactory.h>
@@ -67,5 +66,3 @@ public:
 
 } // namespace Internal
 } // namespace WinRt
-
-#endif // WINRTRUNCONFIGURATIONFACTORY_H
diff --git a/src/plugins/winrt/winrtrunnerhelper.h b/src/plugins/winrt/winrtrunnerhelper.h
index 0ecfd0f76e..0963ff0b1b 100644
--- a/src/plugins/winrt/winrtrunnerhelper.h
+++ b/src/plugins/winrt/winrtrunnerhelper.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WINRTRUNNERHELPER_H
-#define WINRTRUNNERHELPER_H
+#pragma once
 
 #include "winrtdevice.h"
 
@@ -92,5 +91,3 @@ private:
 
 } // namespace WinRt
 } // namespace Internal
-
-#endif // WINRTRUNNERHELPER_H
diff --git a/src/shared/cpaster/cgi.h b/src/shared/cpaster/cgi.h
index 0422468e6c..688ec50288 100644
--- a/src/shared/cpaster/cgi.h
+++ b/src/shared/cpaster/cgi.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CGI_H
-#define CGI_H
+#pragma once
 
 #include <QString>
 
@@ -47,5 +46,3 @@ private:
     inline short charToHex(const QChar &ch);
     inline QChar hexToChar(const QString &hx);
 };
-
-#endif // CGI_H
diff --git a/src/shared/cpaster/splitter.h b/src/shared/cpaster/splitter.h
index a4d14bbbc9..ae03a19514 100644
--- a/src/shared/cpaster/splitter.h
+++ b/src/shared/cpaster/splitter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SPLITTER_H
-#define SPLITTER_H
+#pragma once
 
 #include <QByteArray>
 #include <QList>
@@ -42,5 +41,3 @@ struct FileData
 typedef QList<FileData> FileDataList;
 
 FileDataList splitDiffToFiles(const QString &data);
-
-#endif // SPLITTER_H
diff --git a/src/shared/designerintegrationv2/formresizer.h b/src/shared/designerintegrationv2/formresizer.h
index 80dbf0e1a0..aad1a57b0f 100644
--- a/src/shared/designerintegrationv2/formresizer.h
+++ b/src/shared/designerintegrationv2/formresizer.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FORMRESIZER_H
-#define FORMRESIZER_H
+#pragma once
 
 #include "widgethostconstants.h"
 
@@ -90,5 +89,3 @@ private:
 
 }
 } // namespace SharedTools
-
-#endif // FORMRESIZER_H
diff --git a/src/shared/designerintegrationv2/sizehandlerect.h b/src/shared/designerintegrationv2/sizehandlerect.h
index 36ebb4c579..df4912abe5 100644
--- a/src/shared/designerintegrationv2/sizehandlerect.h
+++ b/src/shared/designerintegrationv2/sizehandlerect.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SIZEHANDLERECT_H
-#define SIZEHANDLERECT_H
+#pragma once
 
 #include "widgethostconstants.h"
 
@@ -71,7 +70,3 @@ private:
 
 }
 } // namespace SharedTools
-
-
-#endif // SIZEHANDLERECT_H
-
diff --git a/src/shared/designerintegrationv2/widgethost.h b/src/shared/designerintegrationv2/widgethost.h
index 00f3ab6b30..ccf8590e91 100644
--- a/src/shared/designerintegrationv2/widgethost.h
+++ b/src/shared/designerintegrationv2/widgethost.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WIDGETHOST_H
-#define WIDGETHOST_H
+#pragma once
 
 #include <QScrollArea>
 
@@ -67,5 +66,3 @@ private:
 };
 
 } // namespace SharedTools
-
-#endif // WIDGETHOST_H
diff --git a/src/shared/designerintegrationv2/widgethostconstants.h b/src/shared/designerintegrationv2/widgethostconstants.h
index f05b0c3598..76bbb3950b 100644
--- a/src/shared/designerintegrationv2/widgethostconstants.h
+++ b/src/shared/designerintegrationv2/widgethostconstants.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef WIDGETHOST_CONSTANTS_H
-#define WIDGETHOST_CONSTANTS_H
+#pragma once
 
 namespace SharedTools {
    namespace Internal {
@@ -32,6 +31,3 @@ namespace SharedTools {
        enum SelectionHandleState { SelectionHandleOff, SelectionHandleInactive, SelectionHandleActive };
    }
 }
-
-#endif // WIDGETHOST_CONSTANTS_H
-
diff --git a/src/shared/help/bookmarkmanager.h b/src/shared/help/bookmarkmanager.h
index 7bb4c71e7f..2526d8bc43 100644
--- a/src/shared/help/bookmarkmanager.h
+++ b/src/shared/help/bookmarkmanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BOOKMARKMANAGER_H
-#define BOOKMARKMANAGER_H
+#pragma once
 
 #include "ui_bookmarkdialog.h"
 
@@ -188,5 +187,3 @@ private:
     BookmarkModel *listModel;
     QStandardItem *renameItem;
 };
-
-#endif
diff --git a/src/shared/help/contentwindow.h b/src/shared/help/contentwindow.h
index 345769b258..99ec3cbca5 100644
--- a/src/shared/help/contentwindow.h
+++ b/src/shared/help/contentwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CONTENTWINDOW_H
-#define CONTENTWINDOW_H
+#pragma once
 
 #include <QUrl>
 #include <QModelIndex>
@@ -66,5 +65,3 @@ private:
     int m_expandDepth;
     bool m_isOpenInNewPageActionVisible;
 };
-
-#endif // CONTENTWINDOW_H
diff --git a/src/shared/help/filternamedialog.h b/src/shared/help/filternamedialog.h
index a32df1c8f7..23f62e9528 100644
--- a/src/shared/help/filternamedialog.h
+++ b/src/shared/help/filternamedialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FILTERNAMEDIALOG_H
-#define FILTERNAMEDIALOG_H
+#pragma once
 
 #include <QDialog>
 #include "ui_filternamedialog.h"
@@ -43,5 +42,3 @@ private slots:
 private:
     Ui::FilterNameDialogClass m_ui;
 };
-
-#endif // FILTERNAMEDIALOG_H
diff --git a/src/shared/help/helpicons.h b/src/shared/help/helpicons.h
index af55edb552..cc9ea64df1 100644
--- a/src/shared/help/helpicons.h
+++ b/src/shared/help/helpicons.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef HELPICONS_H
-#define HELPICONS_H
+#pragma once
 
 #include <utils/icon.h>
 
@@ -44,5 +43,3 @@ const Utils::Icon MODE_HELP_FLAT_ACTIVE({
 
 } // namespace Icons
 } // namespace Help
-
-#endif // HELPICONS_H
diff --git a/src/shared/help/indexwindow.h b/src/shared/help/indexwindow.h
index 14a0983124..d041ba399f 100644
--- a/src/shared/help/indexwindow.h
+++ b/src/shared/help/indexwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef INDEXWINDOW_H
-#define INDEXWINDOW_H
+#pragma once
 
 #include <QAbstractProxyModel>
 #include <QList>
@@ -108,5 +107,3 @@ private:
 
 } // Internal
 } // Help
-
-#endif // INDEXWINDOW_H
diff --git a/src/shared/help/topicchooser.h b/src/shared/help/topicchooser.h
index 304551412a..a886b2b929 100644
--- a/src/shared/help/topicchooser.h
+++ b/src/shared/help/topicchooser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef TOPICCHOOSER_H
-#define TOPICCHOOSER_H
+#pragma once
 
 #include "ui_topicchooser.h"
 
@@ -62,5 +61,3 @@ private:
     QModelIndex m_activedIndex;
     QSortFilterProxyModel *m_filterModel;
 };
-
-#endif // TOPICCHOOSER_H
diff --git a/src/shared/modeltest/modeltest.h b/src/shared/modeltest/modeltest.h
index ecebfeae00..e3f3c8aa34 100644
--- a/src/shared/modeltest/modeltest.h
+++ b/src/shared/modeltest/modeltest.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef MODELTEST_H
-#define MODELTEST_H
+#pragma once
 
 #include <QAbstractItemModel>
 #include <QObject>
@@ -74,5 +73,3 @@ private:
 
     QList<QPersistentModelIndex> changing;
 };
-
-#endif // MODELTEST_H
diff --git a/src/shared/proparser/ioutils.h b/src/shared/proparser/ioutils.h
index 3bade494df..f4fd79f32d 100644
--- a/src/shared/proparser/ioutils.h
+++ b/src/shared/proparser/ioutils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOUTILS_H
-#define IOUTILS_H
+#pragma once
 
 #include <qstring.h>
 
@@ -64,5 +63,3 @@ public:
 } // namespace ProFileEvaluatorInternal
 
 QT_END_NAMESPACE
-
-#endif // IOUTILS_H
diff --git a/src/shared/proparser/profileevaluator.h b/src/shared/proparser/profileevaluator.h
index f49097e670..27b26081b0 100644
--- a/src/shared/proparser/profileevaluator.h
+++ b/src/shared/proparser/profileevaluator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROFILEEVALUATOR_H
-#define PROFILEEVALUATOR_H
+#pragma once
 
 #include "qmake_global.h"
 #include "qmakeglobals.h"
@@ -96,5 +95,3 @@ private:
 };
 
 QT_END_NAMESPACE
-
-#endif // PROFILEEVALUATOR_H
diff --git a/src/shared/proparser/proitems.h b/src/shared/proparser/proitems.h
index 4515eafc7b..d6bc4fe1cb 100644
--- a/src/shared/proparser/proitems.h
+++ b/src/shared/proparser/proitems.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROITEMS_H
-#define PROITEMS_H
+#pragma once
 
 #include "qmake_global.h"
 
@@ -387,5 +386,3 @@ struct ProFunctionDefs {
 };
 
 QT_END_NAMESPACE
-
-#endif // PROITEMS_H
diff --git a/src/shared/proparser/prowriter.h b/src/shared/proparser/prowriter.h
index cd100ffc98..808884837b 100644
--- a/src/shared/proparser/prowriter.h
+++ b/src/shared/proparser/prowriter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef PROWRITER_H
-#define PROWRITER_H
+#pragma once
 
 #include "qmake_global.h"
 #include <QStringList>
@@ -70,5 +69,3 @@ Q_DECLARE_OPERATORS_FOR_FLAGS(ProWriter::PutFlags)
 
 } // namespace Internal
 } // namespace QmakeProjectManager
-
-#endif // PROWRITER_H
diff --git a/src/shared/proparser/qmake_global.h b/src/shared/proparser/qmake_global.h
index af422118b6..8dd3844309 100644
--- a/src/shared/proparser/qmake_global.h
+++ b/src/shared/proparser/qmake_global.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKE_GLOBAL_H
-#define QMAKE_GLOBAL_H
+#pragma once
 
 #include <qglobal.h>
 
@@ -51,5 +50,3 @@
 #ifdef PROEVALUATOR_FULL
 #  define PROEVALUATOR_DEBUG
 #endif
-
-#endif
diff --git a/src/shared/proparser/qmakeevaluator.h b/src/shared/proparser/qmakeevaluator.h
index 9394686283..7bb673cb89 100644
--- a/src/shared/proparser/qmakeevaluator.h
+++ b/src/shared/proparser/qmakeevaluator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEEVALUATOR_H
-#define QMAKEEVALUATOR_H
+#pragma once
 
 #if defined(PROEVALUATOR_FULL) && defined(PROEVALUATOR_THREAD_SAFE)
 #  error PROEVALUATOR_FULL is incompatible with PROEVALUATOR_THREAD_SAFE due to cache() implementation
@@ -310,5 +309,3 @@ Q_DECLARE_TYPEINFO(QMakeEvaluator::Location, Q_PRIMITIVE_TYPE);
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMakeEvaluator::LoadFlags)
 
 QT_END_NAMESPACE
-
-#endif // QMAKEEVALUATOR_H
diff --git a/src/shared/proparser/qmakeevaluator_p.h b/src/shared/proparser/qmakeevaluator_p.h
index 66f6f138df..91c3922106 100644
--- a/src/shared/proparser/qmakeevaluator_p.h
+++ b/src/shared/proparser/qmakeevaluator_p.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEEVALUATOR_P_H
-#define QMAKEEVALUATOR_P_H
+#pragma once
 
 #include "proitems.h"
 
@@ -90,5 +89,3 @@ extern QMakeStatics statics;
 }
 
 QT_END_NAMESPACE
-
-#endif // QMAKEEVALUATOR_P_H
diff --git a/src/shared/proparser/qmakeglobals.h b/src/shared/proparser/qmakeglobals.h
index bd6fe2ead3..33a5bdb831 100644
--- a/src/shared/proparser/qmakeglobals.h
+++ b/src/shared/proparser/qmakeglobals.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEGLOBALS_H
-#define QMAKEGLOBALS_H
+#pragma once
 
 #include "qmake_global.h"
 #include "proitems.h"
@@ -159,5 +158,3 @@ private:
 };
 
 QT_END_NAMESPACE
-
-#endif // QMAKEGLOBALS_H
diff --git a/src/shared/proparser/qmakeparser.h b/src/shared/proparser/qmakeparser.h
index 1da0271625..d44523d024 100644
--- a/src/shared/proparser/qmakeparser.h
+++ b/src/shared/proparser/qmakeparser.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEPARSER_H
-#define QMAKEPARSER_H
+#pragma once
 
 #include "qmake_global.h"
 #include "proitems.h"
@@ -226,5 +225,3 @@ Q_DECLARE_TYPEINFO(QMakeParser::Context, Q_PRIMITIVE_TYPE);
 #endif
 
 QT_END_NAMESPACE
-
-#endif // PROFILEPARSER_H
diff --git a/src/shared/proparser/qmakevfs.h b/src/shared/proparser/qmakevfs.h
index 18762d836c..8c387fe29d 100644
--- a/src/shared/proparser/qmakevfs.h
+++ b/src/shared/proparser/qmakevfs.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QMAKEVFS_H
-#define QMAKEVFS_H
+#pragma once
 
 #include "qmake_global.h"
 
@@ -65,5 +64,3 @@ private:
 };
 
 QT_END_NAMESPACE
-
-#endif // QMAKEVFS_H
diff --git a/src/shared/qtlockedfile/qtlockedfile.h b/src/shared/qtlockedfile/qtlockedfile.h
index 44dbbaafab..52dfef64d0 100644
--- a/src/shared/qtlockedfile/qtlockedfile.h
+++ b/src/shared/qtlockedfile/qtlockedfile.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef QTLOCKEDFILE_H
-#define QTLOCKEDFILE_H
+#pragma once
 
 #include <QFile>
 
@@ -69,5 +68,3 @@ private:
 };
 
 } // namespace SharedTools
-
-#endif // QTLOCKEDFILE_H
diff --git a/src/shared/registryaccess/registryaccess.h b/src/shared/registryaccess/registryaccess.h
index 7b65160d60..f8620614c7 100644
--- a/src/shared/registryaccess/registryaccess.h
+++ b/src/shared/registryaccess/registryaccess.h
@@ -27,8 +27,7 @@
 // qtcdebugger is currently registered for post-mortem debugging.
 // This is only needed on Windows.
 
-#ifndef REGISTRYACCESS_H
-#define REGISTRYACCESS_H
+#pragma once
 
 #include <QString>
 #include <QLatin1String>
@@ -75,5 +74,3 @@ QString debuggerCall(const QString &additionalOption = QString());
 bool isRegistered(HKEY handle, const QString &call, QString *errorMessage, QString *oldDebugger = 0);
 
 } // namespace RegistryAccess
-
-#endif // REGISTRYACCESS_H
diff --git a/src/tools/3rdparty/iossim/coresimulator/coresimulator.h b/src/tools/3rdparty/iossim/coresimulator/coresimulator.h
index d38805ace4..6f0e57486e 100644
--- a/src/tools/3rdparty/iossim/coresimulator/coresimulator.h
+++ b/src/tools/3rdparty/iossim/coresimulator/coresimulator.h
@@ -448,4 +448,3 @@ typedef void (^CDUnknownBlockType)(void); // return type and parameters are unkn
 - (id)init;
 
 @end
-
diff --git a/src/tools/clangbackend/ipcsource/clangcodecompleteresults.h b/src/tools/clangbackend/ipcsource/clangcodecompleteresults.h
index 63e164c402..157fcf1224 100644
--- a/src/tools/clangbackend/ipcsource/clangcodecompleteresults.h
+++ b/src/tools/clangbackend/ipcsource/clangcodecompleteresults.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CLANGCODECOMPLETERESULTS_H
-#define CLANGBACKEND_CLANGCODECOMPLETERESULTS_H
+#pragma once
 
 #include <clang-c/Index.h>
 
@@ -61,5 +60,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CLANGCODECOMPLETERESULTS_H
diff --git a/src/tools/clangbackend/ipcsource/clangfilesystemwatcher.h b/src/tools/clangbackend/ipcsource/clangfilesystemwatcher.h
index 4f7a9461a2..4d6be96a21 100644
--- a/src/tools/clangbackend/ipcsource/clangfilesystemwatcher.h
+++ b/src/tools/clangbackend/ipcsource/clangfilesystemwatcher.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGFILESYSTEMWATCHER_H
-#define CLANGFILESYSTEMWATCHER_H
+#pragma once
 
 #include <QFileSystemWatcher>
 #include <QSet>
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGFILESYSTEMWATCHER_H
diff --git a/src/tools/clangbackend/ipcsource/clangipcserver.h b/src/tools/clangbackend/ipcsource/clangipcserver.h
index a75801f828..a8d4a735d0 100644
--- a/src/tools/clangbackend/ipcsource/clangipcserver.h
+++ b/src/tools/clangbackend/ipcsource/clangipcserver.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGIPCSERVER_H
-#define CLANGIPCSERVER_H
+#pragma once
 
 #include "ipcserverinterface.h"
 
@@ -74,4 +73,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-#endif // CLANGIPCSERVER_H
diff --git a/src/tools/clangbackend/ipcsource/clangstring.h b/src/tools/clangbackend/ipcsource/clangstring.h
index 3fb15f5d72..9f49cc7971 100644
--- a/src/tools/clangbackend/ipcsource/clangstring.h
+++ b/src/tools/clangbackend/ipcsource/clangstring.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CLANGSTRING_H
-#define CLANGBACKEND_CLANGSTRING_H
+#pragma once
 
 #include <clang-c/CXString.h>
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CLANGSTRING_H
diff --git a/src/tools/clangbackend/ipcsource/clangtranslationunit.h b/src/tools/clangbackend/ipcsource/clangtranslationunit.h
index 6943664aae..893e469f09 100644
--- a/src/tools/clangbackend/ipcsource/clangtranslationunit.h
+++ b/src/tools/clangbackend/ipcsource/clangtranslationunit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNIT_H
-#define CLANGBACKEND_TRANSLATIONUNIT_H
+#pragma once
 
 #include <utf8stringvector.h>
 
@@ -166,5 +165,3 @@ private:
 bool operator==(const TranslationUnit &first, const TranslationUnit &second);
 void PrintTo(const TranslationUnit &translationUnit, ::std::ostream *os);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNIT_H
diff --git a/src/tools/clangbackend/ipcsource/clangtype.h b/src/tools/clangbackend/ipcsource/clangtype.h
index 348019fad5..e9a19e92db 100644
--- a/src/tools/clangbackend/ipcsource/clangtype.h
+++ b/src/tools/clangbackend/ipcsource/clangtype.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TYPE_H
-#define CLANGBACKEND_TYPE_H
+#pragma once
 
 #include <clang-c/Index.h>
 
@@ -78,5 +77,3 @@ bool operator==(Type first, Type second);
 void PrintTo(CXTypeKind typeKind, ::std::ostream* os);
 void PrintTo(const Type &type, ::std::ostream* os);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TYPE_H
diff --git a/src/tools/clangbackend/ipcsource/codecompletefailedexception.h b/src/tools/clangbackend/ipcsource/codecompletefailedexception.h
index c722fd4f88..d2ee10b2ed 100644
--- a/src/tools/clangbackend/ipcsource/codecompletefailedexception.h
+++ b/src/tools/clangbackend/ipcsource/codecompletefailedexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CODECOMPLETEFAILEDEXCEPTION_H
-#define CODECOMPLETEFAILEDEXCEPTION_H
+#pragma once
 
 
 class CodeCompleteFailedException
@@ -32,5 +31,3 @@ class CodeCompleteFailedException
 public:
     CodeCompleteFailedException();
 };
-
-#endif // CODECOMPLETEFAILEDEXCEPTION_H
diff --git a/src/tools/clangbackend/ipcsource/codecompleter.h b/src/tools/clangbackend/ipcsource/codecompleter.h
index 99749414f4..2139da926d 100644
--- a/src/tools/clangbackend/ipcsource/codecompleter.h
+++ b/src/tools/clangbackend/ipcsource/codecompleter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CODECOMPLETER_H
-#define CLANGBACKEND_CODECOMPLETER_H
+#pragma once
 
 #include "clangtranslationunit.h"
 
@@ -66,5 +65,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CODECOMPLETER_H
diff --git a/src/tools/clangbackend/ipcsource/codecompletionchunkconverter.h b/src/tools/clangbackend/ipcsource/codecompletionchunkconverter.h
index a912c4b481..0bfb1a19c1 100644
--- a/src/tools/clangbackend/ipcsource/codecompletionchunkconverter.h
+++ b/src/tools/clangbackend/ipcsource/codecompletionchunkconverter.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CODECOMPLETIONCHUNKCONVERTER_H
-#define CLANGBACKEND_CODECOMPLETIONCHUNKCONVERTER_H
+#pragma once
 
 #include <codecompletionchunk.h>
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CODECOMPLETIONCHUNKCONVERTER_H
diff --git a/src/tools/clangbackend/ipcsource/codecompletionsextractor.h b/src/tools/clangbackend/ipcsource/codecompletionsextractor.h
index bc7015dcad..8a4c7c03ab 100644
--- a/src/tools/clangbackend/ipcsource/codecompletionsextractor.h
+++ b/src/tools/clangbackend/ipcsource/codecompletionsextractor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CODECOMPLETIONSEXTRACTOR_H
-#define CLANGBACKEND_CODECOMPLETIONSEXTRACTOR_H
+#pragma once
 
 #include <codecompletion.h>
 
@@ -83,5 +82,3 @@ private:
 void PrintTo(const CodeCompletionsExtractor &extractor, ::std::ostream* os);
 #endif
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_CODECOMPLETIONSEXTRACTOR_H
diff --git a/src/tools/clangbackend/ipcsource/commandlinearguments.h b/src/tools/clangbackend/ipcsource/commandlinearguments.h
index 860e4f2f71..8e6f59191d 100644
--- a/src/tools/clangbackend/ipcsource/commandlinearguments.h
+++ b/src/tools/clangbackend/ipcsource/commandlinearguments.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_COMMANDLINEARGUMENTS_H
-#define CLANGBACKEND_COMMANDLINEARGUMENTS_H
+#pragma once
 
 #include <utf8stringvector.h>
 
@@ -51,5 +50,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_COMMANDLINEARGUMENTS_H
diff --git a/src/tools/clangbackend/ipcsource/cursor.h b/src/tools/clangbackend/ipcsource/cursor.h
index 426563255b..6711ab98d5 100644
--- a/src/tools/clangbackend/ipcsource/cursor.h
+++ b/src/tools/clangbackend/ipcsource/cursor.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_CURSOR_H
-#define CLANGBACKEND_CURSOR_H
+#pragma once
 
 #include "clangtype.h"
 
@@ -119,6 +118,3 @@ bool operator==(const Cursor &first, const Cursor &second);
 void PrintTo(CXCursorKind cursorKind, ::std::ostream *os);
 void PrintTo(const Cursor &cursor, ::std::ostream* os);
 } // namespace ClangBackEnd
-
-
-#endif // CLANGBACKEND_CURSOR_H
diff --git a/src/tools/clangbackend/ipcsource/diagnostic.h b/src/tools/clangbackend/ipcsource/diagnostic.h
index 76de4a3b81..64d4eff9b7 100644
--- a/src/tools/clangbackend/ipcsource/diagnostic.h
+++ b/src/tools/clangbackend/ipcsource/diagnostic.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_DIAGNOSTIC_H
-#define CLANGBACKEND_DIAGNOSTIC_H
+#pragma once
 
 #include <clangbackendipc_global.h>
 
@@ -88,5 +87,3 @@ inline bool operator==(Diagnostic first, Diagnostic second)
 }
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_DIAGNOSTIC_H
diff --git a/src/tools/clangbackend/ipcsource/diagnosticset.h b/src/tools/clangbackend/ipcsource/diagnosticset.h
index 2a66fa7eb5..e715ad2627 100644
--- a/src/tools/clangbackend/ipcsource/diagnosticset.h
+++ b/src/tools/clangbackend/ipcsource/diagnosticset.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_DIAGNOSTICSET_H
-#define CLANGBACKEND_DIAGNOSTICSET_H
+#pragma once
 
 #include "diagnostic.h"
 #include "diagnosticsetiterator.h"
@@ -80,5 +79,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_DIAGNOSTICSET_H
diff --git a/src/tools/clangbackend/ipcsource/diagnosticsetiterator.h b/src/tools/clangbackend/ipcsource/diagnosticsetiterator.h
index 0442cd0e43..7739dfd365 100644
--- a/src/tools/clangbackend/ipcsource/diagnosticsetiterator.h
+++ b/src/tools/clangbackend/ipcsource/diagnosticsetiterator.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef DIAGNOSTICSETITERATOR_H
-#define DIAGNOSTICSETITERATOR_H
+#pragma once
 
 #include <iterator>
 
@@ -83,6 +82,3 @@ private:
 };
 
 }
-
-#endif // DIAGNOSTICSETITERATOR_H
-
diff --git a/src/tools/clangbackend/ipcsource/fixit.h b/src/tools/clangbackend/ipcsource/fixit.h
index 68e5d05a26..f866bc8c18 100644
--- a/src/tools/clangbackend/ipcsource/fixit.h
+++ b/src/tools/clangbackend/ipcsource/fixit.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_FIXIT_H
-#define CLANGBACKEND_FIXIT_H
+#pragma once
 
 #include "sourcerange.h"
 
@@ -56,5 +55,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_FIXIT_H
diff --git a/src/tools/clangbackend/ipcsource/projectpart.h b/src/tools/clangbackend/ipcsource/projectpart.h
index d6856f5c99..13cbbae248 100644
--- a/src/tools/clangbackend/ipcsource/projectpart.h
+++ b/src/tools/clangbackend/ipcsource/projectpart.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_PROJECT_H
-#define CLANGBACKEND_PROJECT_H
+#pragma once
 
 #include <utf8string.h>
 
@@ -79,5 +78,3 @@ private:
 bool operator==(const ProjectPart &first, const ProjectPart &second);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_PROJECT_H
diff --git a/src/tools/clangbackend/ipcsource/projectpartsdonotexistexception.h b/src/tools/clangbackend/ipcsource/projectpartsdonotexistexception.h
index 76de2310ab..2b5b108828 100644
--- a/src/tools/clangbackend/ipcsource/projectpartsdonotexistexception.h
+++ b/src/tools/clangbackend/ipcsource/projectpartsdonotexistexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_PROJECTDONOTEXISTSEXCEPTION_H
-#define CLANGBACKEND_PROJECTDONOTEXISTSEXCEPTION_H
+#pragma once
 
 #include <utf8stringvector.h>
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_PROJECTDONOTEXISTSEXCEPTION_H
diff --git a/src/tools/clangbackend/ipcsource/projects.h b/src/tools/clangbackend/ipcsource/projects.h
index 29667c89c0..4354aebbeb 100644
--- a/src/tools/clangbackend/ipcsource/projects.h
+++ b/src/tools/clangbackend/ipcsource/projects.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_PROJECTS_H
-#define CLANGBACKEND_PROJECTS_H
+#pragma once
 
 #include "projectpart.h"
 
@@ -57,5 +56,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_PROJECTS_H
diff --git a/src/tools/clangbackend/ipcsource/skippedsourceranges.h b/src/tools/clangbackend/ipcsource/skippedsourceranges.h
index 222c2b9202..ddbf3e62b5 100644
--- a/src/tools/clangbackend/ipcsource/skippedsourceranges.h
+++ b/src/tools/clangbackend/ipcsource/skippedsourceranges.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_SKIPPEDSOURCERANGES_H
-#define CLANGBACKEND_SKIPPEDSOURCERANGES_H
+#pragma once
 
 #include "sourcerange.h"
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_SKIPPEDSOURCERANGES_H
diff --git a/src/tools/clangbackend/ipcsource/sourcelocation.h b/src/tools/clangbackend/ipcsource/sourcelocation.h
index 0ce40f6c5f..2f278e8566 100644
--- a/src/tools/clangbackend/ipcsource/sourcelocation.h
+++ b/src/tools/clangbackend/ipcsource/sourcelocation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_SOURCELOCATION_H
-#define CLANGBACKEND_SOURCELOCATION_H
+#pragma once
 
 #include <clang-c/Index.h>
 
@@ -75,5 +74,3 @@ bool operator==(const SourceLocation &first, const SourceLocation &second);
 void PrintTo(const SourceLocation &sourceLocation, ::std::ostream* os);
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_SOURCELOCATION_H
diff --git a/src/tools/clangbackend/ipcsource/sourcerange.h b/src/tools/clangbackend/ipcsource/sourcerange.h
index 9fe25aa94a..df5612004e 100644
--- a/src/tools/clangbackend/ipcsource/sourcerange.h
+++ b/src/tools/clangbackend/ipcsource/sourcerange.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_SOURCERANGE_H
-#define CLANGBACKEND_SOURCERANGE_H
+#pragma once
 
 #include "sourcelocation.h"
 
@@ -62,5 +61,3 @@ private:
 bool operator==(const SourceRange &first, const SourceRange &second);
 void PrintTo(const SourceRange &sourceRange, ::std::ostream* os);
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_SOURCERANGE_H
diff --git a/src/tools/clangbackend/ipcsource/translationunitalreadyexistsexception.h b/src/tools/clangbackend/ipcsource/translationunitalreadyexistsexception.h
index 81055b8810..0db693dc0e 100644
--- a/src/tools/clangbackend/ipcsource/translationunitalreadyexistsexception.h
+++ b/src/tools/clangbackend/ipcsource/translationunitalreadyexistsexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITALREADYEXISTS_H
-#define CLANGBACKEND_TRANSLATIONUNITALREADYEXISTS_H
+#pragma once
 
 #include <filecontainer.h>
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITALREADYEXISTS_H
diff --git a/src/tools/clangbackend/ipcsource/translationunitdoesnotexistexception.h b/src/tools/clangbackend/ipcsource/translationunitdoesnotexistexception.h
index 77f87dea93..f4943d9a1c 100644
--- a/src/tools/clangbackend/ipcsource/translationunitdoesnotexistexception.h
+++ b/src/tools/clangbackend/ipcsource/translationunitdoesnotexistexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITDONOTEXISTS_H
-#define CLANGBACKEND_TRANSLATIONUNITDONOTEXISTS_H
+#pragma once
 
 #include <filecontainer.h>
 
@@ -52,5 +51,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITDONOTEXISTS_H
diff --git a/src/tools/clangbackend/ipcsource/translationunitfilenotexitexception.h b/src/tools/clangbackend/ipcsource/translationunitfilenotexitexception.h
index a351b5b512..9081f3757e 100644
--- a/src/tools/clangbackend/ipcsource/translationunitfilenotexitexception.h
+++ b/src/tools/clangbackend/ipcsource/translationunitfilenotexitexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITFILENOTEXITS_H
-#define CLANGBACKEND_TRANSLATIONUNITFILENOTEXITS_H
+#pragma once
 
 #include <utf8string.h>
 
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITFILENOTEXITS_H
diff --git a/src/tools/clangbackend/ipcsource/translationunitisnullexception.h b/src/tools/clangbackend/ipcsource/translationunitisnullexception.h
index 6e68db62b6..c64c53369e 100644
--- a/src/tools/clangbackend/ipcsource/translationunitisnullexception.h
+++ b/src/tools/clangbackend/ipcsource/translationunitisnullexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITISNULLEXCEPTION_H
-#define CLANGBACKEND_TRANSLATIONUNITISNULLEXCEPTION_H
+#pragma once
 
 #include <QtGlobal>
 
@@ -45,5 +44,3 @@ public:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITISNULLEXCEPTION_H
diff --git a/src/tools/clangbackend/ipcsource/translationunitparseerrorexception.h b/src/tools/clangbackend/ipcsource/translationunitparseerrorexception.h
index 8175fa7454..13b31e9c7d 100644
--- a/src/tools/clangbackend/ipcsource/translationunitparseerrorexception.h
+++ b/src/tools/clangbackend/ipcsource/translationunitparseerrorexception.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITPARSEERROREXCEPTION_H
-#define CLANGBACKEND_TRANSLATIONUNITPARSEERROREXCEPTION_H
+#pragma once
 
 #include <utf8string.h>
 
@@ -55,5 +54,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITPARSEERROREXCEPTION_H
diff --git a/src/tools/clangbackend/ipcsource/translationunits.h b/src/tools/clangbackend/ipcsource/translationunits.h
index ef80e05371..d30ca98250 100644
--- a/src/tools/clangbackend/ipcsource/translationunits.h
+++ b/src/tools/clangbackend/ipcsource/translationunits.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_TRANSLATIONUNITS_H
-#define CLANGBACKEND_TRANSLATIONUNITS_H
+#pragma once
 
 #include "clangfilesystemwatcher.h"
 #include "clangtranslationunit.h"
@@ -119,5 +118,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_TRANSLATIONUNITS_H
diff --git a/src/tools/clangbackend/ipcsource/unsavedfiles.h b/src/tools/clangbackend/ipcsource/unsavedfiles.h
index f5617df9b8..270f4aa386 100644
--- a/src/tools/clangbackend/ipcsource/unsavedfiles.h
+++ b/src/tools/clangbackend/ipcsource/unsavedfiles.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CLANGBACKEND_UNSAVEDFILES_H
-#define CLANGBACKEND_UNSAVEDFILES_H
+#pragma once
 
 #include <filecontainer.h>
 
@@ -76,5 +75,3 @@ private:
 };
 
 } // namespace ClangBackEnd
-
-#endif // CLANGBACKEND_UNSAVEDFILES_H
diff --git a/src/tools/cplusplus-shared/utils.h b/src/tools/cplusplus-shared/utils.h
index 21dee5d53d..48131cf5c6 100644
--- a/src/tools/cplusplus-shared/utils.h
+++ b/src/tools/cplusplus-shared/utils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CPLUSPLUSTOOLSUTILS_H
-#define CPLUSPLUSTOOLSUTILS_H
+#pragma once
 
 #include <QString>
 #include <QStringList>
@@ -53,5 +52,3 @@ private:
 };
 
 } // namespace
-
-#endif // CPLUSPLUSTOOLSUTILS_H
diff --git a/src/tools/iostool/iosdevicemanager.h b/src/tools/iostool/iosdevicemanager.h
index ddf6b01db1..214415adc4 100644
--- a/src/tools/iostool/iosdevicemanager.h
+++ b/src/tools/iostool/iosdevicemanager.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef IOSMANAGER_H
-#define IOSMANAGER_H
+#pragma once
 
 #include <QObject>
 #include <QString>
@@ -105,5 +104,3 @@ public:
 };
 
 } // namespace Ios
-
-#endif // IOSMANAGER_H
diff --git a/src/tools/qtcreatorcrashhandler/backtracecollector.h b/src/tools/qtcreatorcrashhandler/backtracecollector.h
index bf6a42f051..1fdb1eb2df 100644
--- a/src/tools/qtcreatorcrashhandler/backtracecollector.h
+++ b/src/tools/qtcreatorcrashhandler/backtracecollector.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef BACKTRACECOLLECTOR_H
-#define BACKTRACECOLLECTOR_H
+#pragma once
 
 #include <QProcess>
 
@@ -56,5 +55,3 @@ private:
 
     BacktraceCollectorPrivate *d;
 };
-
-#endif // BACKTRACECOLLECTOR_H
diff --git a/src/tools/qtcreatorcrashhandler/crashhandler.h b/src/tools/qtcreatorcrashhandler/crashhandler.h
index 8fc3a7ae3b..b46468451f 100644
--- a/src/tools/qtcreatorcrashhandler/crashhandler.h
+++ b/src/tools/qtcreatorcrashhandler/crashhandler.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CRASHHANDLER_H
-#define CRASHHANDLER_H
+#pragma once
 
 #include <QObject>
 
@@ -61,5 +60,3 @@ private:
 
     CrashHandlerPrivate *d;
 };
-
-#endif // CRASHHANDLER_H
diff --git a/src/tools/qtcreatorcrashhandler/crashhandlerdialog.h b/src/tools/qtcreatorcrashhandler/crashhandlerdialog.h
index 2307c8a5e9..3bcc2672c5 100644
--- a/src/tools/qtcreatorcrashhandler/crashhandlerdialog.h
+++ b/src/tools/qtcreatorcrashhandler/crashhandlerdialog.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CRASHHANDLERDIALOG_H
-#define CRASHHANDLERDIALOG_H
+#pragma once
 
 #include <QDialog>
 
@@ -61,5 +60,3 @@ private:
     CrashHandler *m_crashHandler;
     Ui::CrashHandlerDialog *m_ui;
 };
-
-#endif // CRASHHANDLERDIALOG_H
diff --git a/src/tools/qtcreatorcrashhandler/crashhandlersetup.h b/src/tools/qtcreatorcrashhandler/crashhandlersetup.h
index b37ba599f5..4236bb534d 100644
--- a/src/tools/qtcreatorcrashhandler/crashhandlersetup.h
+++ b/src/tools/qtcreatorcrashhandler/crashhandlersetup.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CRASHHANDLERSETUP_H
-#define CRASHHANDLERSETUP_H
+#pragma once
 
 class CrashHandlerSetup
 {
@@ -32,5 +31,3 @@ public:
     CrashHandlerSetup();
     ~CrashHandlerSetup();
 };
-
-#endif // CRASHHANDLERSETUP_H
diff --git a/src/tools/qtcreatorcrashhandler/utils.h b/src/tools/qtcreatorcrashhandler/utils.h
index 5defc09b2e..60c2a39f91 100644
--- a/src/tools/qtcreatorcrashhandler/utils.h
+++ b/src/tools/qtcreatorcrashhandler/utils.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef UTILS_H
-#define UTILS_H
+#pragma once
 
 #include <QByteArray>
 #include <QString>
@@ -33,5 +32,3 @@ const char APPLICATION_NAME[] = "Qt Creator Crash Handler";
 const char URL_BUGTRACKER[] = "https://bugreports.qt.io/";
 
 QByteArray fileContents(const QString &filePath);
-
-#endif // UTILS_H
diff --git a/src/tools/qtcreatorwidgets/customwidgets.h b/src/tools/qtcreatorwidgets/customwidgets.h
index d6d2f5d8b8..496e8cbc54 100644
--- a/src/tools/qtcreatorwidgets/customwidgets.h
+++ b/src/tools/qtcreatorwidgets/customwidgets.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CUSTOMWIDGETS_H
-#define CUSTOMWIDGETS_H
+#pragma once
 
 #include "customwidget.h"
 
@@ -289,5 +288,3 @@ public:
 private:
     QList<QDesignerCustomWidgetInterface*> m_plugins;
 };
-
-#endif // CUSTOMWIDGETS_H
diff --git a/src/tools/screenshotcropper/cropimageview.h b/src/tools/screenshotcropper/cropimageview.h
index f0da57e8d8..c95bc5bc77 100644
--- a/src/tools/screenshotcropper/cropimageview.h
+++ b/src/tools/screenshotcropper/cropimageview.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef CROPIMAGEVIEW_H
-#define CROPIMAGEVIEW_H
+#pragma once
 
 #include <QWidget>
 
@@ -51,5 +50,3 @@ private:
     QImage m_image;
     QRect m_area;
 };
-
-#endif // CROPIMAGEVIEW_H
diff --git a/src/tools/screenshotcropper/screenshotcropperwindow.h b/src/tools/screenshotcropper/screenshotcropperwindow.h
index 715adac49f..98813a77c3 100644
--- a/src/tools/screenshotcropper/screenshotcropperwindow.h
+++ b/src/tools/screenshotcropper/screenshotcropperwindow.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SCREENSHOTCROPPERWINDOW_H
-#define SCREENSHOTCROPPERWINDOW_H
+#pragma once
 
 #include <QMainWindow>
 #include "screenshotcropper.h"
@@ -54,5 +53,3 @@ private:
     QString m_imagesFolder;
     Ui::ScreenShotCropperWindow *ui;
 };
-
-#endif // SCREENSHOTCROPPERWINDOW_H
diff --git a/src/tools/sdktool/adddebuggeroperation.h b/src/tools/sdktool/adddebuggeroperation.h
index b1c6313482..32e8369d64 100644
--- a/src/tools/sdktool/adddebuggeroperation.h
+++ b/src/tools/sdktool/adddebuggeroperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDDEBUGGEROPERATION_H
-#define ADDDEBUGGEROPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -62,5 +61,3 @@ private:
     QStringList m_abis;
     KeyValuePairList m_extra;
 };
-
-#endif // ADDDEBUGGEROPERATION_H
diff --git a/src/tools/sdktool/adddeviceoperation.h b/src/tools/sdktool/adddeviceoperation.h
index e32dd7feb5..207407aed2 100644
--- a/src/tools/sdktool/adddeviceoperation.h
+++ b/src/tools/sdktool/adddeviceoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDDEVICEOPERATION_H
-#define ADDDEVICEOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -95,5 +94,3 @@ private:
     int m_version;
     KeyValuePairList m_extra;
 };
-
-#endif // ADDDEVICEOPERATION_H
diff --git a/src/tools/sdktool/addkeysoperation.h b/src/tools/sdktool/addkeysoperation.h
index 46f7760d16..40483befd1 100644
--- a/src/tools/sdktool/addkeysoperation.h
+++ b/src/tools/sdktool/addkeysoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDKEYSOPERATION_H
-#define ADDKEYSOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ private:
 
     QList<KeyValuePair> m_data;
 };
-
-#endif // ADDKEYSOPERATION_H
diff --git a/src/tools/sdktool/addkitoperation.h b/src/tools/sdktool/addkitoperation.h
index 4a90cc6f03..1c14c11e0c 100644
--- a/src/tools/sdktool/addkitoperation.h
+++ b/src/tools/sdktool/addkitoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDKITOPERATION_H
-#define ADDKITOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -82,5 +81,3 @@ private:
     QStringList m_env;
     KeyValuePairList m_extra;
 };
-
-#endif // ADDKITOPERATION_H
diff --git a/src/tools/sdktool/addqtoperation.h b/src/tools/sdktool/addqtoperation.h
index f07a1ecaba..2712556767 100644
--- a/src/tools/sdktool/addqtoperation.h
+++ b/src/tools/sdktool/addqtoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDQTOPERATION_H
-#define ADDQTOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -61,5 +60,3 @@ private:
     QString m_qmake;
     KeyValuePairList m_extra;
 };
-
-#endif // ADDQTOPERATION_H
diff --git a/src/tools/sdktool/addtoolchainoperation.h b/src/tools/sdktool/addtoolchainoperation.h
index 588a186413..2f642c87f6 100644
--- a/src/tools/sdktool/addtoolchainoperation.h
+++ b/src/tools/sdktool/addtoolchainoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef ADDTOOLCHAINOPERATION_H
-#define ADDTOOLCHAINOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -63,5 +62,3 @@ private:
     QString m_supportedAbis;
     KeyValuePairList m_extra;
 };
-
-#endif // ADDTOOLCHAINOPERATION_H
diff --git a/src/tools/sdktool/findkeyoperation.h b/src/tools/sdktool/findkeyoperation.h
index be656cf452..f6365c7ebd 100644
--- a/src/tools/sdktool/findkeyoperation.h
+++ b/src/tools/sdktool/findkeyoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDKEYOPERATION_H
-#define FINDKEYOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ private:
     QString m_file;
     QStringList m_keys;
 };
-
-#endif // FINDKEYOPERATION_H
diff --git a/src/tools/sdktool/findvalueoperation.h b/src/tools/sdktool/findvalueoperation.h
index ae02a6580f..2d49678b66 100644
--- a/src/tools/sdktool/findvalueoperation.h
+++ b/src/tools/sdktool/findvalueoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef FINDVALUEOPERATION_H
-#define FINDVALUEOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ private:
     QString m_file;
     QVariantList m_values;
 };
-
-#endif // FINDVALUEOPERATION_H
diff --git a/src/tools/sdktool/getoperation.h b/src/tools/sdktool/getoperation.h
index 4fe475e455..6d9b018ad0 100644
--- a/src/tools/sdktool/getoperation.h
+++ b/src/tools/sdktool/getoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef GETOPERATION_H
-#define GETOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -49,5 +48,3 @@ private:
     QStringList m_keys;
     QString m_file;
 };
-
-#endif // GETOPERATION_H
diff --git a/src/tools/sdktool/operation.h b/src/tools/sdktool/operation.h
index 7f51f08978..ad2062cf8f 100644
--- a/src/tools/sdktool/operation.h
+++ b/src/tools/sdktool/operation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef OPERATION_H
-#define OPERATION_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -66,5 +65,3 @@ public:
     static QVariant valueFromString(const QString &v);
     static QString makeUnique(const QString &name, const QStringList &inUse);
 };
-
-#endif // OPERATION_H
diff --git a/src/tools/sdktool/rmdebuggeroperation.h b/src/tools/sdktool/rmdebuggeroperation.h
index 6d7d108f95..58c086849b 100644
--- a/src/tools/sdktool/rmdebuggeroperation.h
+++ b/src/tools/sdktool/rmdebuggeroperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RMDEBUGGEROPERATION_H
-#define RMDEBUGGEROPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ public:
 private:
     QString m_id;
 };
-
-#endif // RMDEBUGGEROPERATION_H
diff --git a/src/tools/sdktool/rmdeviceoperation.h b/src/tools/sdktool/rmdeviceoperation.h
index 7aa76b1214..f5f711b5f5 100644
--- a/src/tools/sdktool/rmdeviceoperation.h
+++ b/src/tools/sdktool/rmdeviceoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RMDEVICEOPERATION_H
-#define RMDEVICEOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ public:
 private:
     QString m_id;
 };
-
-#endif // RMDEVICEOPERATION_H
diff --git a/src/tools/sdktool/rmkeysoperation.h b/src/tools/sdktool/rmkeysoperation.h
index dd6eda6a3b..d83c1860d5 100644
--- a/src/tools/sdktool/rmkeysoperation.h
+++ b/src/tools/sdktool/rmkeysoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RMKEYSOPERATION_H
-#define RMKEYSOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -49,5 +48,3 @@ private:
     QStringList m_keys;
     QString m_file;
 };
-
-#endif // RMKEYSOPERATION_H
diff --git a/src/tools/sdktool/rmkitoperation.h b/src/tools/sdktool/rmkitoperation.h
index 5d08cffe8a..75fb4cf527 100644
--- a/src/tools/sdktool/rmkitoperation.h
+++ b/src/tools/sdktool/rmkitoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RMKITOPERATION_H
-#define RMKITOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ public:
 private:
     QString m_id;
 };
-
-#endif // RMKITOPERATION_H
diff --git a/src/tools/sdktool/rmqtoperation.h b/src/tools/sdktool/rmqtoperation.h
index a4625be1ba..36ff9cee96 100644
--- a/src/tools/sdktool/rmqtoperation.h
+++ b/src/tools/sdktool/rmqtoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RMQTOPERATION_H
-#define RMQTOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ public:
 private:
     QString m_id;
 };
-
-#endif // RMQTOPERATION_H
diff --git a/src/tools/sdktool/rmtoolchainoperation.h b/src/tools/sdktool/rmtoolchainoperation.h
index 302d7deaf4..3755320710 100644
--- a/src/tools/sdktool/rmtoolchainoperation.h
+++ b/src/tools/sdktool/rmtoolchainoperation.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef RMTOOLCHAINOPERATION_H
-#define RMTOOLCHAINOPERATION_H
+#pragma once
 
 #include "operation.h"
 
@@ -50,5 +49,3 @@ public:
 private:
     QString m_id;
 };
-
-#endif // RMTOOLCHAINOPERATION_H
diff --git a/src/tools/sdktool/settings.h b/src/tools/sdktool/settings.h
index 1da043817d..dbf3481c26 100644
--- a/src/tools/sdktool/settings.h
+++ b/src/tools/sdktool/settings.h
@@ -23,8 +23,7 @@
 **
 ****************************************************************************/
 
-#ifndef SETTINGS_H
-#define SETTINGS_H
+#pragma once
 
 #include <utils/fileutils.h>
 
@@ -47,5 +46,3 @@ public:
 private:
     static Settings *m_instance;
 };
-
-#endif // SETTINGS_H
diff --git a/src/tools/valgrindfake/outputgenerator.h b/src/tools/valgrindfake/outputgenerator.h
index 1f5fd034e8..f4cba94289 100644
--- a/src/tools/valgrindfake/outputgenerator.h
+++ b/src/tools/valgrindfake/outputgenerator.h
@@ -24,8 +24,7 @@
 **
 ****************************************************************************/
 
-#ifndef LIBVALGRIND_FAKE_OUTPUTGENERATOR_H
-#define LIBVALGRIND_FAKE_OUTPUTGENERATOR_H
+#pragma once
 
 #include <QObject>
 #include <QTimer>
@@ -71,5 +70,3 @@ private:
 
 } // namespace Fake
 } // namespace Valgrind
-
-#endif // LIBVALGRIND_FAKE_OUTPUTGENERATOR_H