cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sched/sched_rr_get_interval.c -o sched/sched_rr_get_interval -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
sched/sched_rr_get_interval.c:6:18: error: expected ‘)’ before ‘struct’
    6 | int (*foo)(pid_t, struct timespec *) = sched_rr_get_interval;
      |                  ^~~~~~~
      |                  )