cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations pthread/pthread_setcancelstate.c -o pthread/pthread_setcancelstate -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
pthread/pthread_setcancelstate.c:5:26: error: ‘pthread_setcancelstate’ undeclared here (not in a function)
    5 | int (*foo)(int, int *) = pthread_setcancelstate;
      |                          ^~~~~~~~~~~~~~~~~~~~~~