cmake HAVE__FDOPEN examples

NauEngine/NauEditorPublic editor/external/libzipconfig/CMakeLists.txt :97 

check_function_exists(_fdopen HAVE__FDOPEN)

nih-at/libzip CMakeLists.txt :104 

check_function_exists(_fdopen HAVE__FDOPEN)

flyinghead/flycast core/deps/libzip/CMakeLists.txt :97 

check_function_exists(_fdopen HAVE__FDOPEN)