[libcxx-commits] [libcxx] [libc++] Check for _newlib_version.h instead of picolibc.h (PR #152766)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 requested changes to this pull request.

We're trying to not include arbitrary headers anymore, since that caused problems before. See #147956, which should also fix your issue.

https://github.com/llvm/llvm-project/pull/152766