cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sched/struct-timespec.c -o sched/struct-timespec -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
sched/struct-timespec.c:2:17: error: storage size of ‘foo’ isn’t known
    2 | struct timespec foo;
      |                 ^~~