title: Mqtt client program in c
body: <p>I'm using Dev C++ tool. I'm getting an error <code>undefined reference to 'MQTTClient_create'</code>.</p>
  
  <p>part of a code of source file(.c)</p>
  
  <pre><code>MQTTClient_create(&amp;client, ADDRESS, CLIENTID,
          MQTTCLIENT_PERSISTENCE_NONE, NULL);
      conn_opts.keepAliveInterval = 20;
      conn_opts.cleansession = 1;
  </code></pre>