[PATCH] D19415: [libcxx][rfc] Externalized threading support

[Asiri Rathnayake via cfe-commits]

rmaprath added a comment.

I forgot to mention that we will need a similar (although much smaller) porting layer for `libcxxabi` and `libunwind`, as those too currently have a pthread dependency.


http://reviews.llvm.org/D19415