[libcxx-commits] [libcxx] [libc++] Define all CMake configuration features in the same location (PR #115361)

[Caslyn Tonelli via libcxx-commits]

Caslyn wrote:

Hey @ldionne - possibly related to https://github.com/llvm/llvm-project/pull/115361#issuecomment-2477505031, we're also seeing this error propagate on our clang-linux-arm64/clang-linux-x64 down stream builders as well[0]. 
It sounds like this change possibly triggered something that was broken with how `google-benchmark` is configured. 

[0] https://luci-milo.appspot.com/ui/p/fuchsia/builders/toolchain.ci/clang-linux-x64/b8731292516413316561/overview 

https://github.com/llvm/llvm-project/pull/115361