[PATCH] D34158: For Linux/gnu compatibility, preinclude <stdc-predef.h> if the file is available

[Melanie Blower via Phabricator via cfe-commits]

mibintc updated this revision to Diff 110193.
mibintc added a comment.

Responding to @fedor.sergeev 's comment.  This is an updated patch which pulls out the "isValid" check on GCCInstallation. Also I'm putting back the dummy sysroot tree which contains stdc-predef.h and adding a new test run to confirm that the new option fsystem-include-if-exists is actually working.


https://reviews.llvm.org/D34158

Files:
  include/clang/Driver/CC1Options.td
  include/clang/Lex/PreprocessorOptions.h
  lib/Driver/ToolChains/Linux.cpp
  lib/Driver/ToolChains/Linux.h
  lib/Frontend/CompilerInvocation.cpp
  lib/Frontend/InitPreprocessor.cpp
  test/Driver/Inputs/stdc-predef/usr/include/stdc-predef.h
  test/Driver/clang_cpp.c
  test/Driver/crash-report-header.h
  test/Driver/crash-report-spaces.c
  test/Driver/crash-report.c
  test/Driver/rewrite-legacy-objc.m
  test/Driver/rewrite-map-in-diagnostics.c
  test/Driver/rewrite-objc.m
  test/Driver/stdc-predef.c
  test/Index/IBOutletCollection.m
  test/Index/annotate-macro-args.m
  test/Index/annotate-tokens-pp.c
  test/Index/annotate-tokens.c
  test/Index/c-index-getCursor-test.m
  test/Index/get-cursor-macro-args.m
  test/Index/get-cursor.cpp
  test/Preprocessor/ignore-pragmas.c
  unittests/Tooling/TestVisitor.h

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