cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations pthread/pthread_spin_lock.c -o pthread/pthread_spin_lock -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
pthread/pthread_spin_lock.c:5:36: error: ‘pthread_spin_lock’ undeclared here (not in a function); did you mean ‘pthread_spinlock_t’?
    5 | int (*foo)(pthread_spinlock_t *) = pthread_spin_lock;
      |                                    ^~~~~~~~~~~~~~~~~
      |                                    pthread_spinlock_t