libxcb-ewmh2 software package provides utility libraries for X C Binding -- ewmh, 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 libxcb-ewmh2
libxcb-ewmh2 is installed in your system.
Make ensure the libxcb-ewmh2 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libxcb-ewmh2 *
You will get with libxcb-ewmh2 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libxcb-ewmh2 |
| Version | 0.4.1-1ubuntu1 |
| Description | utility libraries for X C Binding -- ewmh |
| Sub Section | libs |