tree 68c5ce3b7cd69725b6c3f9884b8ba071fa0d70ed
parent a379a44fce5f1d55b2337304c111fe116584c4b5
author Petr Hosek <phosek@google.com> 1601339840 -0700
committer Copybara-Service <copybara-worker@google.com> 1634593519 -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