ada compiler ?



i'm a student and this year i started to learn ada, so it'd be cool if i could have an ada compiler on Mac OS X. For now i have to connect to my university by telnet, but its very slow.
I search through the net and obviously all sites point to the gnat compiler. But there's no ppc binaries, so i downloaded the src and i found out that gnat need gnat in order to be built :-( (see the readme in
I kept on searchin and found gwu (see wich is quite nice but it's a regular mac app and thus need classic to run.

So if any of you knows a native ada compiler, please post your links.

Thanks in advance.