|  | # Build a libc++ shared library, but merge libc++abi and libunwind into it. | 
|  | set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "") | 
|  | set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "") | 
|  | set(LIBCXX_ENABLE_STATIC_ABI_LIBRARY ON CACHE BOOL "") | 
|  | set(LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY ON CACHE BOOL "") | 
|  |  | 
|  | set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "") | 
|  | set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "") | 
|  | set(LIBCXXABI_ENABLE_STATIC_UNWINDER ON CACHE BOOL "") | 
|  | set(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY ON CACHE BOOL "") | 
|  |  | 
|  | set(LIBUNWIND_ENABLE_SHARED OFF CACHE BOOL "") |