message: compile error on MacOS
diff: @@ -75,10 +75,12 @@ void swoole_coroutine_signal_init()
  {
  signal_init = true;
  swSignal_add(SIGCHLD, signal_handler);
  - if (!swReactor_handle_isset(SwooleG.main_reactor, SW_FD_SIGNAL))
  +#ifdef HAVE_SIGNALFD
  + if (SwooleG.use_signalfd && !swReactor_handle_isset(SwooleG.main_reactor, SW_FD_SIGNAL))
  {
  swSignalfd_setup(SwooleG.main_reactor);
  }
  +#endif
  }
  }
  