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>

75 files changed, 75 insertions, 301 deletions

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