Help installing GNAT 3.15p on a linux machine

["Beau Elliott" <beau.elliott@gmail.com>]

Can anyone help me with my install of GNAT 3.15p. I downloaded the
linux version from http://libre.act-europe.fr/GNAT/

I then used:
gunzip -c gnat-3.15p-i686-pc-redhat71-gnu-bin.tar.gz | tar xf -

I then used the doconfig (using option 2) script to create the
doinstall file.

Once I did this, I ran the doinstall file and it finished.

I then wrote a hello world program to test it out,

I typed:

gcc -c hello.adb

and then I got an error saying: Ada compiler not installed on this
system.

Can anyone help me fix this problem? I know this is not necessarily a
Ada problem, but I assume some of you use linux and probably use this
compiler so maybe some of you can help me solve my problem.  I would
really like to use Ada in a linux environment. Thanks in advance!

Beau