[PATCH] D136315: [clang][Darwin] Try to guess the SDK root with xcrun when unspecified

[Caleb Zulawski via Phabricator via cfe-commits]

calebzulawski added a comment.

That makes more sense, I thought perhaps it was using `DEFAULT_SYSROOT`.  The shim isn't smart enough to choose the sysroot from the target unfortunately.

It looks like the only error is unrelated to this change, something with concepts in libc++.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136315/new/

https://reviews.llvm.org/D136315