Example MQTT Client Code not working C

I got the example code from:

http://ift.tt/1GTJ9Ut

Using -

MQTTClient.h

However when I build I get the errors:

undefined reference to MQTTClient_create
undefined reference to MQTTClient_connect
undefined reference to MQTTClient_publishMessage
undefined reference to MQTTClient_waitForCompletion
undefined reference to MQTTClient_disconnect

In the header file these are set up as follows:

DLLExport int MQTTClient_create(MQTTClient* handle, const char* serverURI, const char* clientId,
        int persistence_type, void* persistence_context);

I am using a Windows 8 machine with Eclipse C/C++ IDE

I also have some paho-mqtt.dll's I'm not sure how to get the example code up and running.

Thank you

via Chebli Mohamed