How to Use macro _POSIX_SOURCE with pthread

Applications Programming
1

I use Digital Unix 4.0F (OSF/1) .I write a simple programe :

#define _POSIX_SOURCE
#include <pthread.h>

void main(void)
{ }

But , the compiler report many errors .
I do not know why the compiler compain that .

Thank you in advance

2

You need to use:
#define _POSIX_C_SOURCE 199506L

You can get more info by reading the well commented /usr/include/pthread.h. (Tested on 4.0G)