[libcxx-commits] [libcxx] [libc++][test] `ADDITIONAL_COMPILE_FLAGS` should be a comma-separated list (PR #73541)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

I think we should rather go the other way around and make the flag space-separated. Having it comma separated seems like a poor UI design to me, since every compiler I'm aware of assumes a space-separated list of arguments.

https://github.com/llvm/llvm-project/pull/73541