cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations time/timer_create.c -o time/timer_create -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
time/timer_create.c:5:30: error: 'struct sigevent' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
 int (*foo)(clockid_t, struct sigevent *restrict, timer_t *restrict) = timer_create;
                              ^~~~~~~~
time/timer_create.c:5:71: error: 'timer_create' undeclared here (not in a function); did you mean 'timer_t'?
 int (*foo)(clockid_t, struct sigevent *restrict, timer_t *restrict) = timer_create;
                                                                       ^~~~~~~~~~~~
                                                                       timer_t
cc1: all warnings being treated as errors