cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sched/SCHED_SPORADIC.c -o sched/SCHED_SPORADIC -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
sched/SCHED_SPORADIC.c:3:17: error: use of undeclared identifier 'SCHED_SPORADIC'
    3 | int const foo = SCHED_SPORADIC;
      |                 ^
1 error generated.