gnat-4.6-base software package provides GNU Ada compiler (common 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 gnat-4.6-base
gnat-4.6-base is installed in your system.
Make ensure the gnat-4.6-base package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnat-4.6-base *
You will get with gnat-4.6-base package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | gnat-4.6-base |
| Version | 4.6.4-0ubuntu5 |
| Description | GNU Ada compiler (common files) |
| Sub Section | libs |