cc -O2 -pipe -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations pthread/pthread_rwlock_clockrdlock.c -o pthread/pthread_rwlock_clockrdlock -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lstdthreads -lcrypt
pthread/pthread_rwlock_clockrdlock.c:5:86: error: use of undeclared identifier 'pthread_rwlock_clockrdlock'
    5 | int (*foo)(pthread_rwlock_t *restrict, clockid_t, const struct timespec *restrict) = pthread_rwlock_clockrdlock;
      |                                                                                      ^
1 error generated.