cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations time/timer_delete.c -o time/timer_delete -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
time/timer_delete.c:5:23: error: 'timer_delete' undeclared here (not in a function); did you mean 'timer_t'?
 int (*foo)(timer_t) = timer_delete;
                       ^~~~~~~~~~~~
                       timer_t