tree 69d2b6a97c9b641bd488744e133912fe6646395d
parent 4b0918f3e49d407a821d573a3aa41e77a8cfb442
author Dan Liew <dan@su-root.co.uk> 1568395884 +0000
committer Dan Liew <dan@su-root.co.uk> 1568395884 +0000

Fix bug in `darwin_test_archs()` when the cache variable is set but empty.

Summary:
If the cache variable named in `${valid_archs}` (e.g. `DARWIN_osx_BUILTIN_ARCHS`)
is set in the cache but is empty then the cache check
`if(${valid_archs})` will be false so the function will probe the
compiler but the `set(...)` command at the end of the function to update
the cache variable will be a no-op. This is because `set(...)` will not
update an existing cache variable unless the `FORCE` argument is
provided.

To fix this this patch adds `FORCE` so the cache is always updated.

rdar://problem/55323665

Reviewers: vsk, kubamracek

Subscribers: mgorny, #sanitizers, llvm-commits

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D67530

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@371872 91177308-0d34-0410-b5e6-96231b3b80d8