[PATCH] D29800: [libunwind][CMake] Use libc++ headers when available

[Petr Hosek via Phabricator via llvm-commits]

phosek added a comment.

This is a resubmit of https://reviews.llvm.org/D29573, in the previous version I forgot to add `-nostdinc++` to `CMAKE_CXX_FLAGS` which caused a build breakage because the host C++ headers collided with the libc++ ones on some platforms.


Repository:
  rL LLVM

https://reviews.llvm.org/D29800