Clang: fix clang static analyzer on Windows

1) mingw kit + qmake: do not add target includes
not to override clang paths (for intrinsics and more)
2) msvc kit + qbs: remove target option from
clang-cl arguments

Change-Id: Ifb494ee61ae2d39e957cff31dbd647c66910be17
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/plugins/clangstaticanalyzer/clangstaticanalyzerruncontrol.cpp

@@ -161,7 +161,8 @@ static void prependTargetTripleIfNotIncludedAndNotEmpty(QStringList *arguments,
 }
 
 // Removes (1) inputFile (2) -o <somePath>.
-QStringList inputAndOutputArgumentsRemoved(const QString &inputFile, const QStringList &arguments)
+QStringList inputAndOutputArgumentsRemoved(const QString &inputFile, const QStringList &arguments,
+                                           bool isMsvc)
 {
     QStringList newArguments;
 
@@ -173,6 +174,9 @@ QStringList inputAndOutputArgumentsRemoved(const QString &inputFile, const QStri
         } else if (argument == QLatin1String("-o")) {
             skip = true;
             continue;
+        } else if (isMsvc && argument == QLatin1String("-target")) {
+            skip = true;
+            continue;
         } else if (QDir::fromNativeSeparators(argument) == inputFile) {
             continue; // TODO: Let it in?
         }
@@ -233,11 +237,23 @@ public:
 
     ClangStaticAnalyzerOptionsBuilder(const CppTools::ProjectPart &projectPart)
         : CompilerOptionsBuilder(projectPart)
-        , m_isMsvcToolchain(m_projectPart.toolchainType == ProjectExplorer::Constants::MSVC_TOOLCHAIN_TYPEID)
+        , m_isMsvcToolchain(m_projectPart.toolchainType
+                            == ProjectExplorer::Constants::MSVC_TOOLCHAIN_TYPEID)
+        , m_isMinGWToolchain(m_projectPart.toolchainType
+                            == ProjectExplorer::Constants::MINGW_TOOLCHAIN_TYPEID)
     {
     }
 
 public:
+    bool excludeHeaderPath(const QString &headerPath) const override
+    {
+        if (CompilerOptionsBuilder::excludeHeaderPath(headerPath))
+            return true;
+        if (m_isMinGWToolchain && headerPath.contains(m_projectPart.toolChainTargetTriple))
+            return true;
+        return false;
+    }
+
     void undefineClangVersionMacrosForMsvc()
     {
         if (m_projectPart.toolchainType == ProjectExplorer::Constants::MSVC_TOOLCHAIN_TYPEID) {
@@ -260,7 +276,7 @@ private:
         // For MSVC toolchains we use clang-cl.exe, so there is nothing to do here since
         //    1) clang-cl.exe does not understand the "-triple" option
         //    2) clang-cl.exe already hardcodes the right triple value (even if built with mingw)
-        if (m_projectPart.toolchainType != ProjectExplorer::Constants::MSVC_TOOLCHAIN_TYPEID)
+        if (!m_isMsvcToolchain)
             CompilerOptionsBuilder::addTargetTriple();
     }
 
@@ -317,6 +333,7 @@ private:
 
 private:
     bool m_isMsvcToolchain;
+    bool m_isMinGWToolchain;
 };
 
 static QStringList createMsCompatibilityVersionOption(const ProjectPart &projectPart)
@@ -364,8 +381,11 @@ static QStringList tweakedArguments(const ProjectPart &projectPart,
                                     const QStringList &arguments,
                                     const QString &targetTriple)
 {
-    QStringList newArguments = inputAndOutputArgumentsRemoved(filePath, arguments);
+    const bool isMsvc = projectPart.toolchainType
+            == ProjectExplorer::Constants::MSVC_TOOLCHAIN_TYPEID;
+    QStringList newArguments = inputAndOutputArgumentsRemoved(filePath, arguments, isMsvc);
     prependWordWidthArgumentIfNotIncluded(&newArguments, projectPart.toolChainWordWidth);
+    if (!isMsvc)
         prependTargetTripleIfNotIncludedAndNotEmpty(&newArguments, targetTriple);
     newArguments.append(createHeaderPathsOptionsForClangOnMac(projectPart));
     newArguments.append(createMsCompatibilityVersionOption(projectPart));

src/plugins/clangstaticanalyzer/clangstaticanalyzerunittests.cpp

@@ -75,6 +75,13 @@ void ClangStaticAnalyzerUnitTests::testProject()
 {
     QFETCH(QString, projectFilePath);
     QFETCH(int, expectedDiagCount);
+    if (projectFilePath.contains("mingw")) {
+        const ToolChain * const toolchain
+                = ToolChainKitInformation::toolChain(KitManager::kits().first(),
+                                                     Constants::CXX_LANGUAGE_ID);
+        if (toolchain->typeId() != ProjectExplorer::Constants::MINGW_TOOLCHAIN_TYPEID)
+            QSKIP("This test is mingw specific, does not run for other toolchais");
+    }
 
     CppTools::Tests::ProjectOpenerAndCloser projectManager;
     const CppTools::ProjectInfo projectInfo = projectManager.open(projectFilePath, true);
@@ -107,6 +114,9 @@ void ClangStaticAnalyzerUnitTests::testProject_data()
 
     addTestRow("qt-essential-includes/qt-essential-includes.qbs", 0);
     addTestRow("qt-essential-includes/qt-essential-includes.pro", 0);
+
+    addTestRow("mingw-includes/mingw-includes.qbs", 0);
+    addTestRow("mingw-includes/mingw-includes.pro", 0);
 }
 
 void ClangStaticAnalyzerUnitTests::addTestRow(const QByteArray &relativeFilePath,

src/plugins/clangstaticanalyzer/unit-tests/mingw-includes/main.cpp

@@ -0,0 +1,7 @@
+#include <cstddef>
+#include "intrin.h"
+
+int main(int argc, char *argv[])
+{
+    return 0;
+}

src/plugins/clangstaticanalyzer/unit-tests/mingw-includes/mingw-includes.pro

@@ -0,0 +1,3 @@
+CONFIG -= QT
+
+SOURCES += main.cpp

src/plugins/clangstaticanalyzer/unit-tests/mingw-includes/mingw-includes.qbs

@@ -0,0 +1,5 @@
+import qbs
+
+CppApplication {
+    files: ["main.cpp"]
+}