libswiften-dev software package provides XMPP library (development files), 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 libswiften-dev
libswiften-dev is installed in your system.
Make ensure the libswiften-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libswiften-dev *
You will get with libswiften-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libswiften-dev |
| Version | 2.0+dev6-1 |
| Description | XMPP library (development files) |
| Sub Section | libdevel |