tree 8d6815b3458f63d57947d9a320ec77df4da28b58
parent c5e10c24d86571f47cec21879b0284e33f8ba45e
author Petr Hosek <phosek@google.com> 1601339840 -0700
committer Copybara-Service <copybara-worker@google.com> 1634593525 -0700

[CMake] Cache the compiler-rt library search results

There's a lot of duplicated calls to find various compiler-rt libraries
from build of runtime libraries like libunwind, libc++, libc++abi and
compiler-rt. The compiler-rt helper module already implemented caching
for results avoid repeated Clang invocations.

This change moves the compiler-rt implementation into a shared location
and reuses it from other runtimes to reduce duplication and speed up
the build.

Differential Revision: https://reviews.llvm.org/D88458

GitOrigin-RevId: 0eed292fbae22a8856682b07e1cb968424b49941