[PATCH] D22663: Support setting default value for -rtlib at build time

[Lei Zhang via cfe-commits]

zlei updated this revision to Diff 65643.
zlei added a comment.

Fix a bug on Darwin that crashes clang when `CLANG_DEFAULT_RTLIB=libgcc`


https://reviews.llvm.org/D22663

Files:
  CMakeLists.txt
  include/clang/Config/config.h.cmake
  lib/Driver/ToolChain.cpp
  lib/Driver/ToolChains.cpp
  lib/Driver/ToolChains.h
  test/Driver/linux-ld.c
  test/Driver/miamcu-opt.c
  test/Driver/miamcu-opt.cpp
  test/Driver/mingw-libgcc.c
  test/Driver/mingw.cpp
  test/Driver/mips-mti-linux.c
  test/Driver/sanitizer-ld.c
  test/Driver/windows-cross.c
  test/OpenMP/linking.c

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