Index: lib/CMakeLists.txt
===================================================================
--- lib/CMakeLists.txt
+++ lib/CMakeLists.txt
@@ -89,9 +89,9 @@
 
 # Add the unwinder library.
 if (LIBCXXABI_USE_LLVM_UNWINDER)
-  if (TARGET unwind_shared)
+  if (TARGET unwind_shared OR HAVE_LIBUNWIND)
     add_interface_library(unwind_shared)
-  elseif (TARGET unwind_static)
+  elseif (TARGET unwind_static OR HAVE_LIBUNWIND)
     add_interface_library(unwind_static)
   else()
     add_interface_library(unwind)