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 -lintl -liconv
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