gnat-5-arm-linux-gnueabihf software package provides GNU Ada compiler, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gnat-5-arm-linux-gnueabihf
gnat-5-arm-linux-gnueabihf is installed in your system.
Make ensure the gnat-5-arm-linux-gnueabihf package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnat-5-arm-linux-gnueabihf *
You will get with gnat-5-arm-linux-gnueabihf package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Development |
| Package | gnat-5-arm-linux-gnueabihf |
| Version | 5.3.1-14ubuntu2cross1 |
| Description | GNU Ada compiler |
| Sub Section | Devel |