libxen-dev software package provides Public headers and libs for Xen, 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 libxen-dev
libxen-dev is installed in your system.
Make ensure the libxen-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libxen-dev *
You will get with libxen-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libxen-dev |
| Version | 4.4.2-0ubuntu0.14.04.7 [amd64, |
| Description | Public headers and libs for Xen |
| Sub Section | libdevel |