cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations semaphore/sem_close.c -o semaphore/sem_close -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt 
relibc getrlimit(3, 0x7ffffffffc80): not implemented
relibc getrlimit(3, 0x7ffffffffbb0): not implemented
relibc getrlimit(9, 0x7ffffffffb70): not implemented
relibc getrlimit(9, 0x7ffffffffba0): not implemented
relibc getrlimit(5, 0x7ffffffffba0): not implemented
relibc getrlimit(9, 0x7ffffffffb70): not implemented
In file included from semaphore/sem_close.c:1:
/usr/include/semaphore.h:51:57: error: unknown type name 'timespec'
   51 | int sem_clockwait(sem_t *sem, clockid_t clock_id, const timespec *abstime);
      |                                                         ^~~~~~~~
/usr/include/semaphore.h:56:37: error: unknown type name 'timespec'
   56 | int sem_timedwait(sem_t *sem, const timespec *abstime);
      |                                     ^~~~~~~~
semaphore/sem_close.c:5:23: error: 'sem_close' undeclared here (not in a function); did you mean 'sem_post'?
    5 | int (*foo)(sem_t *) = sem_close;
      |                       ^~~~~~~~~
      |                       sem_post