The Paho project provides open-source client implementations for open and standard messaging protocols aimed at new, existing, and emerging applications for Machine‑to‑Machine (M2M), and Internet of Things (IoT).

1. ubuntu@ubuntu:~$ git clone http://git.eclipse.o…paho.mqtt.c.git

2.  ubuntu@ubuntu:~$ cd org.eclipse.paho.mqtt.c/

3. ubuntu@ubuntu:~/org.eclipse.paho.mqtt.c$ sudo apt-get install libssl-dev