[llvm] r324779 - CMake: Allow specifying arbitrary CCACHE parameters

[Justin Bogner via llvm-commits]

Matthias Braun <mbraun at apple.com> writes:
> Out of interest: Why do we have all this logic in llvms cmake at all?
>
> AFAIK `cmake -DCMAKE_CXX_COMPILER_LAUNCHER=sccache` seems to work just
> as well...

Good question. I didn't know about that flag, but it sounds like it does
something fairly similar. This might just be one of those things where
learning which cmake flags exist is basically impossible so people
reinvent things constantly.