[PATCH] D15920: [CMake] Add option to switch default C++ stdlib

[Jonas Hahnfeld via cfe-commits]

Hahnfeld updated this revision to Diff 47441.
Hahnfeld added a comment.

Address reviewers' comments:

- check for valid `CLANG_DEFAULT_CXX_STDLIB`
- generalize for `Darwin` and `Bitrig` by introducing `GetDefaultCXXStdlibType`
- fallback to `CLANG_DEFAULT_CXX_STDLIB` if user choice is incorrect


http://reviews.llvm.org/D15920

Files:
  CMakeLists.txt
  include/clang/Config/config.h.cmake
  include/clang/Config/config.h.in
  include/clang/Driver/ToolChain.h
  lib/Driver/ToolChain.cpp
  lib/Driver/ToolChains.cpp
  lib/Driver/ToolChains.h
  test/Driver/android-standalone.cpp
  test/Driver/darwin-iphone-defaults.m
  test/Driver/darwin-objc-gc.m
  test/Driver/darwin-sanitizer-ld.c
  test/Driver/gcc-toolchain.cpp
  test/Driver/linux-header-search.cpp
  test/Driver/mips-cs.cpp
  test/Driver/mips-fsf.cpp
  test/Driver/mips-img.cpp
  test/Driver/sanitizer-ld.c
  test/Driver/windows-cross.c
  unittests/libclang/LibclangTest.cpp

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