libxshmfence-dev software package provides X shared memory fences - 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 libxshmfence-dev
libxshmfence-dev is installed in your system.
Make ensure the libxshmfence-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libxshmfence-dev *
You will get with libxshmfence-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libxshmfence-dev |
| Version | 1.1-2 |
| Description | X shared memory fences - development files |
| Sub Section | libdevel |