[compiler-rt] [compiler-rt] [Darwin] OS/feature detection should use the run-wrapper (PR #171167)

[Mariusz Borsa via llvm-commits]

https://github.com/wrotki approved this pull request.

LGTM

I wonder how come this: `str(config.darwin_osx_version[0])` wasn't bombing out before? Can't see `darwin_osx_version` defined anywhere.

https://github.com/llvm/llvm-project/pull/171167