[PATCH] D27643: [libcxx][CMake] Move the warning to HandleOutOfTreeLLVM

[Petr Hosek via Phabricator via llvm-commits]

phosek added a comment.

On a related note, there seems to be difference in handling this part of configuration between libcxxabi and libunwind, and libcxx. For example, when libcxxabi or libunwind cannot find `llvm-config` they throw `FATAL_ERROR` while libcxx only prints `WARNING` and carries on. Would it make sense to unify this logic, and if so which is correct?


Repository:
  rL LLVM

https://reviews.llvm.org/D27643