[PATCH] D124489: Deprecate LLVM_BUILD_EXTERNAL_COMPILER_RT

[Petr Hosek via Phabricator via cfe-commits]

phosek added a comment.

I'd be in favor of defaulting to an `ERROR` and providing an option to downgrade to a `WARNING`.


Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D124489