cmake HAVE_PTHREAD_MUTEX_TIMEDLOCK examples

Froser/gamemachine src/3rdparty/openal-soft-1.19.1/CMakeLists.txt :718 

CHECK_SYMBOL_EXISTS(pthread_mutex_timedlock pthread.h HAVE_PTHREAD_MUTEX_TIMEDLOCK)

manticoresoftware/manticoresearch CMakeLists.txt :104 

check_function_exists ( pthread_mutex_timedlock HAVE_PTHREAD_MUTEX_TIMEDLOCK )