tools/clang/translation_unit/test_files/sysroot/README - Issue 1658553002: Check for system include paths by looking at clang's HeaderSearchOptions,

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Unified Diff: tools/clang/translation_unit/test_files/sysroot/README

Issue 1658553002: Check for system include paths by looking at clang's HeaderSearchOptions, (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Add helpful comments Created 4 years, 11 months ago

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« tools/clang/translation_unit/TranslationUnitGenerator.cpp ('K') | « tools/clang/translation_unit/test_files/compile_commands.json.template ('k') | tools/clang/translation_unit/test_files/sysroot/usr/include/c++/4.6/string » ('j') | no next file with comments »
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Index: tools/clang/translation_unit/test_files/sysroot/README

diff --git a/tools/clang/translation_unit/test_files/sysroot/README b/tools/clang/translation_unit/test_files/sysroot/README

new file mode 100644

index 0000000000000000000000000000000000000000..932835881f2e6a92987cd5d9af572486b286df42

--- /dev/null

+++ b/tools/clang/translation_unit/test_files/sysroot/README

@@ -0,0 +1,19 @@

+Clang looks for the presence of crtbegin.o to decide whether to add GCC standard

+C++ library directories to the system header lookup path.

+The presence of usr/lib/gcc/x86_64-linux-gnu/4.6/crtbegin.o and

+usr/include/c++/4.6 inside this sysroot will cause clang to add the following

+directories to the path:

+ - $SYSROOT/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6

+ - $SYSROOT/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/x86_64-linux-gnu/c++/4.6

+ - $SYSROOT/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/x86_64-unknown-linux-gnu/c++/4.6

+ - $SYSROOT/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/backward

+As well as the standard paths:

+ - $SYSROOT/usr/local/include

+ - $SYSROOT/include

+ - $SYSROOT/usr/include

+See clang's lib/Driver/ToolChains.cpp:

+ - FilterNonExistent: checks for crtbegin.o

+ - Linux::AddClangCXXStdlibIncludeArgs: looks for various c++ directories