cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration pthread/pthread_attr_setinheritsched.c -o pthread/pthread_attr_setinheritsched -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lnetwork -lbsd -latomic
pthread/pthread_attr_setinheritsched.c: In function 'main':
pthread/pthread_attr_setinheritsched.c:26:23: error: implicit declaration of function 'pthread_attr_setschedpolicy'; did you mean 'pthread_attr_setschedparam'? [-Werror=implicit-function-declaration]
   26 |         if ( (errno = pthread_attr_setschedpolicy(&attr, policy)) )
      |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                       pthread_attr_setschedparam
pthread/pthread_attr_setinheritsched.c:30:23: error: implicit declaration of function 'pthread_attr_setinheritsched'; did you mean 'pthread_attr_setguardsize'? [-Werror=implicit-function-declaration]
   30 |         if ( (errno = pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED)) )
      |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                       pthread_attr_setguardsize
cc1: some warnings being treated as errors