?????? can't find "pthread_barrier_t"

I figure out what happened. Thank you very much! --  -- ??: "joel"http://lists.rtems.org/mailman/listinfo/users___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users

can't find "pthread_barrier_t"

    I would like to compile rtems on my C6678 board. I have changed some code and when I wanted to compile it, I find it doesn't define pthread_barrier_t in \cpukit\include\rtems\posix\pthread.h. Is there other place to put it or I should install a pthread library?___