Clang: Allow to provide extra command line options

This can be used to experiment with clang options that e.g. affect
diagnostics.

Changes take effect on editor re-open.

Change-Id: Ie46d0ff085a3700a748dbcf4b94b93b0bf9c4642
Reviewed-by: Leena Miettinen <[email protected]>
Reviewed-by: Eike Ziller <[email protected]>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/plugins/cpptools/cppcodemodelsettings.cpp b/src/plugins/cpptools/cppcodemodelsettings.cpp
index 35555868a13..5d35cf7d3e8 100644
--- a/src/plugins/cpptools/cppcodemodelsettings.cpp
+++ b/src/plugins/cpptools/cppcodemodelsettings.cpp
@@ -36,6 +36,7 @@ using namespace CppTools;
 
 static QLatin1String cppHeaderMimeType(Constants::CPP_HEADER_MIMETYPE);
 static QLatin1String cHeaderMimeType(Constants::C_HEADER_MIMETYPE);
+static QLatin1String clangExtraOptionsKey(Constants::CPPTOOLS_EXTRA_CLANG_OPTIONS);
 
 void CppCodeModelSettings::fromSettings(QSettings *s)
 {
@@ -45,6 +46,8 @@ void CppCodeModelSettings::fromSettings(QSettings *s)
     foreach (const QString &mimeType, supportedMimeTypes())
         setIdForMimeType(supporters, mimeType);
 
+    setExtraClangOptions(s->value(clangExtraOptionsKey, defaultExtraClangOptions()).toStringList());
+
     QVariant v = s->value(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE), PchUse_None);
     setPCHUsage(static_cast<PCHUsage>(v.toInt()));
     s->endGroup();
@@ -59,6 +62,7 @@ void CppCodeModelSettings::toSettings(QSettings *s)
     foreach (const QString &mimeType, m_modelManagerSupportByMimeType.keys())
         var[mimeType] = m_modelManagerSupportByMimeType[mimeType];
     s->setValue(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_SUPPORTERS_KEY), QVariant(var));
+    s->setValue(clangExtraOptionsKey, extraClangOptions());
     s->setValue(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE), pchUsage());
     s->endGroup();
 
@@ -116,6 +120,33 @@ bool CppCodeModelSettings::hasModelManagerSupportIdForMimeType(const QString &mi
         return m_modelManagerSupportByMimeType.value(mimeType) == id;
 }
 
+QStringList CppCodeModelSettings::defaultExtraClangOptions()
+{
+    return {
+        QStringLiteral("-Weverything"),
+        QStringLiteral("-Wno-c++98-compat"),
+        QStringLiteral("-Wno-c++98-compat-pedantic"),
+        QStringLiteral("-Wno-unused-macros"),
+        QStringLiteral("-Wno-newline-eof"),
+        QStringLiteral("-Wno-exit-time-destructors"),
+        QStringLiteral("-Wno-global-constructors"),
+        QStringLiteral("-Wno-gnu-zero-variadic-macro-arguments"),
+        QStringLiteral("-Wno-documentation"),
+        QStringLiteral("-Wno-shadow"),
+        QStringLiteral("-Wno-missing-prototypes"), // Not optimal for C projects.
+    };
+}
+
+QStringList CppCodeModelSettings::extraClangOptions() const
+{
+    return m_extraClangOptions;
+}
+
+void CppCodeModelSettings::setExtraClangOptions(const QStringList &extraClangOptions)
+{
+    m_extraClangOptions = extraClangOptions;
+}
+
 void CppCodeModelSettings::setIdForMimeType(const QVariant &var, const QString &mimeType)
 {
     QHash<QString, QVariant> mimeToId = var.toHash();