tree ae359e6358b530f04da49a9c0185dcfee9316ec3
parent 16d4a3f21c3eee853579b06619d9a3a1a1de7825
author Duncan P. N. Exon Smith <dexonsmith@apple.com> 1493854434 +0000
committer Duncan P. N. Exon Smith <dexonsmith@apple.com> 1493854434 +0000

CMake: Only add test/ subdirectory when it exists

r296685 started adding the test/ subdirectory even when
LIBCXX_INCLUDE_TESTS=OFF.  This is great for testing libcxx standalone,
but it also breaks the build when the test/ subdirectory is removed
(and our submission system strips all test/ directories).

This patch updates the logic to check for test/ before adding it.

rdar://problem/31931366

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302095 91177308-0d34-0410-b5e6-96231b3b80d8