[PATCH] D124489: Deprecate LLVM_BUILD_EXTERNAL_COMPILER_RT

[Chris Bieneman via Phabricator via cfe-commits]

beanz added a comment.

Making it an `ERROR` and providing an option to downgrade it to a `WARNING` seems reasonable to me. Thoughts?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D124489/new/

https://reviews.llvm.org/D124489