gcc -pthread  -Wall -Wextra -Werror=implicit-function-declaration pthread/pthread_attr_setstacksize.c -o pthread/pthread_attr_setstacksize -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lxnet -lsocket -latomic
pthread/pthread_attr_setstacksize.c: In function 'main':
pthread/pthread_attr_setstacksize.c:19:23: error: 'PTHREAD_STACK_MIN' undeclared (first use in this function)
   19 |         size_t size = PTHREAD_STACK_MIN;
      |                       ^~~~~~~~~~~~~~~~~
pthread/pthread_attr_setstacksize.c:19:23: note: each undeclared identifier is reported only once for each function it appears in