cmake CMAKE_HAVE_PTHREADS_CREATE examples

rxseger/rx_tools cmake/FindThreads.cmake :132 

CHECK_LIBRARY_EXISTS(pthreads pthread_create "" CMAKE_HAVE_PTHREADS_CREATE)

CatxFish/obs-virtual-cam cmake/Modules/FindThreads.cmake :123 

check_library_exists(pthreads pthread_create "" CMAKE_HAVE_PTHREADS_CREATE)