libmosquittopp0 software package provides MQTT version 3.1 client C++ library, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libmosquittopp0
libmosquittopp0 is installed in your system.
Make ensure the libmosquittopp0 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libmosquittopp0 *
You will get with libmosquittopp0 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | libmosquittopp0 |
| Version | 0.15-2ubuntu1 |
| Description | MQTT version 3.1 client C++ library |
| Sub Section | Net |