zlib and its devels - for compression.
There is also one for crypto I'm pretty sure of.
Also a csh shell unless the startup file is bash compatible.
Normal GNU tools such as make and the like and what ever other packages -THAT- needs (IE GCC).
I can fire up smaugfuss on my centos box at home in the next few days - she's a fresh install of 5.2, what version are you running? I'd like to know so I can match version to version in my vm environment.
What I've done in the past is get gcc installed and working and then make it! See what it complains about. I've had a whole host of codebases running on 5.0 a while ago, so yeah it should work.
Oh yay my 200th post! And 95% of mine are filled with utter nonsense.