#ifdef HAVE_CLEARENV
   if (clearenv() != 0) {
     sys_err(LOG_ERR, __FILE__, __LINE__, errno,
            "clearenv() did not return 0!");
     exit(0);
   }
#else
        extern char **environ;
       environ[0] = NULL;
        if (environ[0] != NULL) {
    sys_err(LOG_ERR, __FILE__, __LINE__, errno,
            "he doesn't know what he's doing!!!");
    exit(0);
  }
#endif