+if(APPLE AND DARWIN_LTO_LIBRARY)
+ set(CMAKE_EXE_LINKER_FLAGS
+ "${CMAKE_EXE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
+ set(CMAKE_SHARED_LINKER_FLAGS
+ "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
+ set(CMAKE_MODULE_LINKER_FLAGS
+ "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
+endif()
+