[PATCH] D31617: [CMake][libcxx] Use builtins rather than gcc_s when compiler-rt is requested

[Michał Górny via Phabricator via llvm-commits]

mgorny added a comment.

See also: https://reviews.llvm.org/D25568. It served the same goal, except that it didn't require the user to explicitly indicate which runtime is enabled in his compiler (i.e. supported clang with compiler-rt by default out of the box). I'm not sure if having both makes sense now; however, I feel like having to figure out whether the compiler is using compiler-rt or libgcc and setting flags appropriately would kinda suck.


Repository:
  rL LLVM

https://reviews.llvm.org/D31617