ada-compiler software package provides virtual package provided by gnat-4.6, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ada-compiler
ada-compiler is installed in your system.
Make ensure the ada-compiler package were installed using the commands given below,
$ sudo dpkg-query -l | grep ada-compiler*
You will get with ada-compiler package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Virtual packages |
| Package | ada-compiler |
| Version | |
| Description | virtual package provided by gnat-4.6 |
| Sub Section | virtual |