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Clang: Avoid consuming gcc internal include paths

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Given the (default) include paths of GCC, e.g.

 /usr/include/c++/7
 /usr/include/x86_64-linux-gnu/c++/7
 /usr/include/c++/7/backward
 /usr/lib/gcc/x86_64-linux-gnu/7/include
 /usr/local/include
 /usr/lib/gcc/x86_64-linux-gnu/7/include-fixed
 /usr/include/x86_64-linux-gnu
 /usr/include

discard gcc-internal paths like /usr/lib/gcc/x86_64-linux-gnu/7/include
as they are not relevant for clang and even confuse it with regard to
 #include_next.

Paths below the gcc install dir are considered as gcc-internal. The
install dir is queried with

  $ gcc -print-search-dirs

Some GCC distributions, like MinGW, ship the standard library headers in
the install dir. Ensure to not discard these.

Fixes: QTCREATORBUG-22898
Change-Id: Ia85258fb01b72ad073e71390e003fe8268e3b01f
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
This commit is contained in:
Nikolai Kosjar
2019-10-10 11:04:01 +02:00
parent 7a87dc0484
commit 5165c037eb
12 changed files with 137 additions and 0 deletions
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1
src/plugins/cppeditor/cppcodemodelinspectordialog.cpp
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@@ -1813,6 +1813,7 @@ void CppCodeModelInspectorDialog::updateProjectPartData(const ProjectPart::Ptr &
{QString::fromLatin1("ToolChain Type"), part->toolchainType.toString()},
{QString::fromLatin1("ToolChain Target Triple"), part->toolChainTargetTriple},
{QString::fromLatin1("ToolChain Word Width"), CMI::Utils::toString(part->toolChainWordWidth)},
{QString::fromLatin1("ToolChain Install Dir"), part->toolChainInstallDir.toString()},
{QString::fromLatin1("Language Version"), CMI::Utils::toString(part->languageVersion)},
{QString::fromLatin1("Language Extensions"), CMI::Utils::toString(part->languageExtensions)},
{QString::fromLatin1("Qt Version"), CMI::Utils::toString(part->qtVersion)}