[PATCH] D34158: to support gcc 4.8 (and newer) compatibility on Linux, preinclude <stdc-predef.h>

[Melanie Blower via Phabricator via cfe-commits]

mibintc updated this revision to Diff 105526.
mibintc added a comment.

I rewrote the patch the way that Richard suggested, adding a cc1 option "finclude-if-exists" and injecting #if __has_include etc. [OK to use finclude? include-if-exists preferred?]
I responded to James' remarks and removed the gcc version check. 
Does this look better?


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/bin/.keep
  test/Driver/Inputs/stdc-predef/usr/i386-unknown-linux/lib/.keep
  test/Driver/Inputs/stdc-predef/usr/include/stdc-predef.h
  test/Driver/Inputs/stdc-predef/usr/lib/.keep
  test/Driver/Inputs/stdc-predef/usr/x86_64-unknown-linux/lib/.keep
  test/Driver/clang_cpp.c
  test/Driver/crash report spaces.c
  test/Driver/crash-report-header.h
  test/Driver/crash-report.c
  test/Driver/gcc-predef-not.c
  test/Driver/gcc-predef.c
  test/Driver/rewrite-map-in-diagnostics.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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