[PATCH] D31638: [CMake][libcxx] Use check_c_compiler_flag to check for nodefaultlibs

[Petr Hosek via Phabricator via llvm-commits]

phosek added a comment.

https://cmake.org/cmake/help/latest/module/CheckCXXCompilerFlag.html says that "This internally calls the check_cxx_source_compiles macro and sets CMAKE_REQUIRED_DEFINITIONS to <flag>" and https://github.com/Kitware/CMake/blob/master/Modules/CheckCXXSourceCompiles.cmake#L67 shows that this is being passed to `try_compile` as `COMPILE_DEFINITIONS`, this is the best I could find.


Repository:
  rL LLVM

https://reviews.llvm.org/D31638