Well actually... Apocalypse, you didn't fully answer his questions.
Apple includes a heavily hacked gcc called cc... I'm not sure what version is, but I think it's 2.95.x or something. There is no g77. People have tried to port it in the past, but have been unsuccessful. I think that the new gcc 3.0.0 port might include it, though. I have no idea how far along it is, however.