cc -O2 -pipe  -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations pthread/PTHREAD_MUTEX_STALLED.c -o pthread/PTHREAD_MUTEX_STALLED -D_POSIX_C_SOURCE=202405L  -lm -lpthread 
pthread/PTHREAD_MUTEX_STALLED.c:2:17: error: use of undeclared identifier 'PTHREAD_MUTEX_STALLED'
int const foo = PTHREAD_MUTEX_STALLED;
                ^
1 error generated.