9b53c1095f
When libcxx is built in-tree with libcxxabi it links against libcxxabi using the name of the cmake target and not the actual library name. The cmake target will not work with `find_library()`, so it needs special case handling. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220121 91177308-0d34-0410-b5e6-96231b3b80d8