CMake/Modules/CheckForPthreads.c

#include <pthread.h>
#include <stdio.h>
#include <unistd.h>

void* runner(void*);

int res = 0;
#ifdef __CLASSIC_C__
int main()
{
  int ac;
  char* av[];
#else
int main(int ac, char* av[])
{
#endif
  pthread_t tid[2];
  pthread_create(&tid[0], 0, runner, (void*)1);
  pthread_create(&tid[1], 0, runner, (void*)2);

#if defined(__BEOS__) && !defined(__ZETA__) /* (no usleep on BeOS 5.) */
  usleep(1); /* for strange behavior on single-processor sun */
#endif

  pthread_join(tid[0], 0);
  pthread_join(tid[1], 0);
  if (ac > 1000) {
    return *av[0];
  }
  return res;
}

void* runner(void* args)
{
  int cc;
  for (cc = 0; cc < 10; cc++) {
    printf("%p CC: %d\n", args, cc);
  }
  res++;
  return 0;
}