libgnustep-gui0.22 software package provides GNUstep GUI 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 libgnustep-gui0.22
libgnustep-gui0.22 is installed in your system.
Make ensure the libgnustep-gui0.22 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libgnustep-gui0.22 *
You will get with libgnustep-gui0.22 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libgnustep-gui0.22 |
| Version | 0.22.0-1ubuntu2 |
| Description | GNUstep GUI Library |
| Sub Section | libs |