$NetBSD$

cxxabi-reexports is not available.

--- src/CMakeLists.txt.orig	2024-11-19 08:08:07.000000000 +0000
+++ src/CMakeLists.txt
@@ -231,7 +231,7 @@ if (LIBCXX_ENABLE_SHARED)
 
   # Maybe force some symbols to be weak, not weak or not exported.
   # TODO: This shouldn't depend on the platform, and ideally it should be done in the sources.
-  if (APPLE AND LIBCXX_CXX_ABI MATCHES "libcxxabi$"
+  if (FALSE AND LIBCXX_CXX_ABI MATCHES "libcxxabi$"
             AND NOT LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY)
     target_link_libraries(cxx_shared PRIVATE
       "-Wl,-unexported_symbols_list,${CMAKE_CURRENT_SOURCE_DIR}/../lib/libc++unexp.exp"