[libcxx-commits] [libcxx] [libcxxabi] Added support ccache for speedup recompilation libcxx and libcxxabi (PR #78470)

[Vitaly Buka via libcxx-commits]

vitalybuka wrote:

It could be nice to have ccache for tests, as seems compilation is significant part of check-cxx.

https://github.com/llvm/llvm-project/pull/78470