tree f5ed5db8cb5d237a073ea00c4d4cd63153a16a6c
parent ec028cc90fc0a71f293d1fe42be6a3d0f0760117
author Xing Xue <xingxue@outlook.com> 1557164721 +0000
committer Xing Xue <xingxue@outlook.com> 1557164721 +0000

Add libc++ to link XRay test cases if libc++ is used to build CLANG

Summary: When libc++ is used to build CLANG, its XRay libraries libclang_rt.xray-*.a have dependencies on libc++. Therefore, libc++ is needed to link and run XRay test cases. For Linux -rpath is also needed to specify where to load libc++. This change sets macro LLVM_LIBCXX_USED to 1 if libc++ is actually used in the build. XRay tests then check the flag and add -L<llvm_shlib_dir> -lc++ and -Wl,-rpath=<llvm_shlib_dir> if needed.

Reviewers: hubert.reinterpretcast, amyk, dberris, jasonliu, sfertile, EricWF

Subscribers: dberris, mgorny, jsji, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61016

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@360060 91177308-0d34-0410-b5e6-96231b3b80d8