cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations pthread/pthread_mutexattr_getrobust.c -o pthread/pthread_mutexattr_getrobust -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
pthread/pthread_mutexattr_getrobust.c:5:66: error: use of undeclared identifier 'pthread_mutexattr_getrobust'
    5 | int (*foo)(const pthread_mutexattr_t *restrict, int *restrict) = pthread_mutexattr_getrobust;
      |                                                                  ^
1 error generated.