cmake HAVE__UNLINK examples

NauEngine/NauEditorPublic editor/external/libzipconfig/CMakeLists.txt :107 

check_function_exists(_unlink HAVE__UNLINK)

nih-at/libzip CMakeLists.txt :118 

check_function_exists(_unlink HAVE__UNLINK)

flyinghead/flycast core/deps/libzip/CMakeLists.txt :107 

check_function_exists(_unlink HAVE__UNLINK)