tree fe2d499a0ffb345aa740b628c3ebca2442d016d4
parent d79e3b69e4bbf237ac4660b6af8a4591f15377f8
author Michał Górny <mgorny@moritz.systems> 1644580111 +0100
committer Copybara-Service <copybara-worker@google.com> 1645036553 -0800

[libcxxabi] [test] Depend on unwind only if available

When building libcxxabi via LLVM_ENABLE_RUNTIMES=libcxxabi the CMake
invocation fails because of missing "unwind" target.  However,
if the extraneous dependency is removed, the library builds just fine
against installed libunwind and tests work fine.  To fix this,
add the dependency only if the target actually exists.

Differential Revision: https://reviews.llvm.org/D119538

GitOrigin-RevId: 5244ef0faf5595495c1adedfa16c346d35caebdf