To install libgnat-4.6 just follow these instructions.
/debian/wheezy/main///install/index.html runtime for applications compiled with GNAT (shared library) Debian 7.0 libs 4.6.3-8
sudo apt-get install libgnat-4.6
Which will install libgnat-4.6 and any other packages on which it depends.
|Maintainer||Debian GCC Maintainers |
|Description||runtime for applications compiled with GNAT (shared library)|