cc -O2 -pthread  -Wall -Wextra -Werror=implicit-function-declaration pthread/pthread_mutex_clocklock.c -o pthread/pthread_mutex_clocklock -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE  -lm -lpthread -lrt  -lintl -lcrypt
pthread/pthread_mutex_clocklock.c: In function 'main':
pthread/pthread_mutex_clocklock.c:20:16: error: implicit declaration of function 'pthread_mutex_clocklock'; did you mean 'pthread_mutex_timedlock'? [-Werror=implicit-function-declaration]
   20 |  if ( (errno = pthread_mutex_clocklock(&mtx, CLOCK_MONOTONIC,
      |                ^~~~~~~~~~~~~~~~~~~~~~~
      |                pthread_mutex_timedlock
cc1: some warnings being treated as errors