Clang: Provide include directory only for libclang

Only libclang has issues with the include directory
search therefore undefining include folders makes sense
only for libclang options builder.

Change-Id: Ie3f62f5f3a89503e6e0ab59e18889e92425c3abc
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

8 files changed, 37 insertions, 51 deletions

diff --git a/src/plugins/clangcodemodel/clangutils.cpp b/src/plugins/clangcodemodel/clangutils.cpp
index 199d4c7e8b..8bd698c2d1 100644
--- a/src/plugins/clangcodemodel/clangutils.cpp
+++ b/src/plugins/clangcodemodel/clangutils.cpp
@@ -86,17 +86,32 @@ static QString creatorResourcePath()
 #endif
 }
 
+static QString clangIncludeDirectory(const QString &clangVersion,
+                                     const QString &clangResourceDirectory)
+{
+#ifndef UNIT_TESTS
+    return Core::ICore::clangIncludeDirectory(clangVersion, clangResourceDirectory);
+#else
+    return QString();
+#endif
+}
+
 class LibClangOptionsBuilder final : public CompilerOptionsBuilder
 {
 public:
     LibClangOptionsBuilder(const ProjectPart &projectPart)
-        : CompilerOptionsBuilder(projectPart, CLANG_VERSION, CLANG_RESOURCE_DIR)
+        : CompilerOptionsBuilder(projectPart)
+        , m_clangVersion(CLANG_VERSION)
+        , m_clangResourceDirectory(CLANG_RESOURCE_DIR)
     {
     }
 
     void addPredefinedHeaderPathsOptions() final
     {
         CompilerOptionsBuilder::addPredefinedHeaderPathsOptions();
+        add("-nostdinc");
+        add("-nostdlibinc");
+        addClangIncludeFolder();
         addWrappedQtHeadersIncludePath();
     }
 
@@ -117,6 +132,13 @@ public:
     }
 
 private:
+    void addClangIncludeFolder()
+    {
+        QTC_CHECK(!m_clangVersion.isEmpty());
+        add("-I");
+        add(clangIncludeDirectory(m_clangVersion, m_clangResourceDirectory));
+    }
+
     void addWrappedQtHeadersIncludePath()
     {
         static const QString resourcePath = creatorResourcePath();
@@ -140,6 +162,9 @@ private:
             add(QDir::toNativeSeparators(path));
         }
     }
+
+    QString m_clangVersion;
+    QString m_clangResourceDirectory;
 };
 
 /**
diff --git a/src/plugins/clangpchmanager/projectupdater.cpp b/src/plugins/clangpchmanager/projectupdater.cpp
index 7a7235b1e2..10fd98771f 100644
--- a/src/plugins/clangpchmanager/projectupdater.cpp
+++ b/src/plugins/clangpchmanager/projectupdater.cpp
@@ -119,7 +119,7 @@ HeaderAndSources ProjectUpdater::headerAndSourcesFromProjectPart(
 QStringList ProjectUpdater::compilerArguments(CppTools::ProjectPart *projectPart)
 {
     using CppTools::CompilerOptionsBuilder;
-    CompilerOptionsBuilder builder(*projectPart, CLANG_VERSION, CLANG_RESOURCE_DIR);
+    CompilerOptionsBuilder builder(*projectPart);
     return builder.build(CppTools::ProjectFile::CXXHeader, CompilerOptionsBuilder::PchUsage::None);
 }
 
diff --git a/src/plugins/clangrefactoring/clangqueryprojectsfindfilter.cpp b/src/plugins/clangrefactoring/clangqueryprojectsfindfilter.cpp
index 654253ae9a..336a681ab2 100644
--- a/src/plugins/clangrefactoring/clangqueryprojectsfindfilter.cpp
+++ b/src/plugins/clangrefactoring/clangqueryprojectsfindfilter.cpp
@@ -153,7 +153,7 @@ Utils::SmallStringVector ClangQueryProjectsFindFilter::compilerArguments(CppTool
 {
     using CppTools::CompilerOptionsBuilder;
 
-    CompilerOptionsBuilder builder(*projectPart, CLANG_VERSION, CLANG_RESOURCE_DIR);
+    CompilerOptionsBuilder builder(*projectPart);
 
     return Utils::SmallStringVector(builder.build(fileKind,
                                                   CompilerOptionsBuilder::PchUsage::None));
diff --git a/src/plugins/clangrefactoring/refactoringengine.cpp b/src/plugins/clangrefactoring/refactoringengine.cpp
index 952ed9bf19..b5127e2b88 100644
--- a/src/plugins/clangrefactoring/refactoringengine.cpp
+++ b/src/plugins/clangrefactoring/refactoringengine.cpp
@@ -74,7 +74,7 @@ void RefactoringEngine::startLocalRenaming(const CppTools::CursorInEditor &data,
 
     QString filePath = data.filePath().toString();
     QTextCursor textCursor = data.cursor();
-    CompilerOptionsBuilder optionsBuilder{*projectPart, CLANG_VERSION, CLANG_RESOURCE_DIR};
+    CompilerOptionsBuilder optionsBuilder{*projectPart};
     Utils::SmallStringVector commandLine{optionsBuilder.build(
                     fileKindInProjectPart(projectPart, filePath),
                     CppTools::getPchUsage())};
diff --git a/src/plugins/clangtools/clangtoolruncontrol.cpp b/src/plugins/clangtools/clangtoolruncontrol.cpp
index 5a587dc381..08cea9383f 100644
--- a/src/plugins/clangtools/clangtoolruncontrol.cpp
+++ b/src/plugins/clangtools/clangtoolruncontrol.cpp
@@ -186,16 +186,12 @@ private:
      bool m_success = false;
 };
 
-static AnalyzeUnits toAnalyzeUnits(const FileInfos &fileInfos,
-                                   const QString &clangVersion,
-                                   const QString &clangResourceDirectory)
+static AnalyzeUnits toAnalyzeUnits(const FileInfos &fileInfos)
 {
     AnalyzeUnits unitsToAnalyze;
     const CompilerOptionsBuilder::PchUsage pchUsage = CppTools::getPchUsage();
     for (const FileInfo &fileInfo : fileInfos) {
-        CompilerOptionsBuilder optionsBuilder(*fileInfo.projectPart,
-                                              clangVersion,
-                                              clangResourceDirectory);
+        CompilerOptionsBuilder optionsBuilder(*fileInfo.projectPart);
         QStringList arguments = extraClangToolsPrependOptions();
         arguments.append(optionsBuilder.build(fileInfo.kind, pchUsage));
         arguments.append(extraClangToolsAppendOptions());
@@ -205,13 +201,11 @@ static AnalyzeUnits toAnalyzeUnits(const FileInfos &fileInfos,
     return unitsToAnalyze;
 }
 
-AnalyzeUnits ClangToolRunControl::unitsToAnalyze(const QString &clangVersion)
+AnalyzeUnits ClangToolRunControl::unitsToAnalyze()
 {
     QTC_ASSERT(m_projectInfo.isValid(), return AnalyzeUnits());
 
-    const QString clangResourceDirectory = Core::ICore::clangIncludeDirectory(m_clangExecutable,
-                                                                              clangVersion);
-    return toAnalyzeUnits(m_fileInfos, clangVersion, clangResourceDirectory);
+    return toAnalyzeUnits(m_fileInfos);
 }
 
 static QDebug operator<<(QDebug debug, const Utils::Environment &environment)
@@ -313,7 +307,7 @@ void ClangToolRunControl::start()
     }
 
     // Collect files
-    const AnalyzeUnits unitsToProcess = unitsToAnalyze(CLANG_VERSION);
+    const AnalyzeUnits unitsToProcess = unitsToAnalyze();
     qCDebug(LOG) << "Files to process:" << unitsToProcess;
     m_unitsToProcess = unitsToProcess;
     m_initialFilesToProcessSize = m_unitsToProcess.count();
diff --git a/src/plugins/clangtools/clangtoolruncontrol.h b/src/plugins/clangtools/clangtoolruncontrol.h
index 65f4bf35d0..dd5a95662e 100644
--- a/src/plugins/clangtools/clangtoolruncontrol.h
+++ b/src/plugins/clangtools/clangtoolruncontrol.h
@@ -77,7 +77,7 @@ private:
     void start() final;
     void stop() final;
 
-    AnalyzeUnits unitsToAnalyze(const QString &clangVersion);
+    AnalyzeUnits unitsToAnalyze();
     void analyzeNextFile();
 
     void handleFinished();
diff --git a/src/plugins/cpptools/compileroptionsbuilder.cpp b/src/plugins/cpptools/compileroptionsbuilder.cpp
index 0eb940dcca..5e5721dc7c 100644
--- a/src/plugins/cpptools/compileroptionsbuilder.cpp
+++ b/src/plugins/cpptools/compileroptionsbuilder.cpp
@@ -39,14 +39,8 @@
 
 namespace CppTools {
 
-static constexpr char SYSTEM_INCLUDE_PREFIX[] = "-isystem";
-
-CompilerOptionsBuilder::CompilerOptionsBuilder(const ProjectPart &projectPart,
-                                               const QString &clangVersion,
-                                               const QString &clangResourceDirectory)
+CompilerOptionsBuilder::CompilerOptionsBuilder(const ProjectPart &projectPart)
     : m_projectPart(projectPart)
-    , m_clangVersion(clangVersion)
-    , m_clangResourceDirectory(clangResourceDirectory)
 {
 }
 
@@ -500,31 +494,9 @@ bool CompilerOptionsBuilder::excludeHeaderPath(const QString &headerPath) const
 
 void CompilerOptionsBuilder::addPredefinedHeaderPathsOptions()
 {
-    add("-nostdinc");
-    add("-nostdlibinc");
-
     // In case of MSVC we need builtin clang defines to correctly handle clang includes
     if (m_projectPart.toolchainType != ProjectExplorer::Constants::MSVC_TOOLCHAIN_TYPEID)
         add("-undef");
-
-    addClangIncludeFolder();
-}
-
-static QString clangIncludeDirectory(const QString &clangVersion,
-                                     const QString &clangResourceDirectory)
-{
-#ifndef UNIT_TESTS
-    return Core::ICore::clangIncludeDirectory(clangVersion, clangResourceDirectory);
-#else
-    return QString();
-#endif
-}
-
-void CompilerOptionsBuilder::addClangIncludeFolder()
-{
-    QTC_CHECK(!m_clangVersion.isEmpty());
-    add(SYSTEM_INCLUDE_PREFIX);
-    add(clangIncludeDirectory(m_clangVersion, m_clangResourceDirectory));
 }
 
 void CompilerOptionsBuilder::addProjectConfigFileInclude()
diff --git a/src/plugins/cpptools/compileroptionsbuilder.h b/src/plugins/cpptools/compileroptionsbuilder.h
index 35cd2ce57a..33a72820e4 100644
--- a/src/plugins/cpptools/compileroptionsbuilder.h
+++ b/src/plugins/cpptools/compileroptionsbuilder.h
@@ -39,9 +39,7 @@ public:
         Use
     };
 
-    CompilerOptionsBuilder(const ProjectPart &projectPart,
-                           const QString &clangVersion = QString(),
-                           const QString &clangResourceDirectory = QString());
+    CompilerOptionsBuilder(const ProjectPart &projectPart);
     virtual ~CompilerOptionsBuilder() {}
 
     virtual void addTargetTriple();
@@ -90,11 +88,8 @@ private:
     QByteArray macroOption(const ProjectExplorer::Macro &macro) const;
     QByteArray toDefineOption(const ProjectExplorer::Macro &macro) const;
     QString defineDirectiveToDefineOption(const ProjectExplorer::Macro &marco) const;
-    void addClangIncludeFolder();
 
     QStringList m_options;
-    QString m_clangVersion;
-    QString m_clangResourceDirectory;
 };
 
 } // namespace CppTools