well, rpms are compiled too so of course you can compile your own stuff - somebody's gotta do it. The trouble is that you might have to tweak with the config files so that it can find the things it needs.
The libgtkglext-x11-1.0.so.0 is in the rpm package called libgtkglext1. Search for it in rpmdrake. It's in contrib so it should now turn up in rpmdrake.
I'm pretty sure you have pango installed. Just do rpm -q pango and if it's installed it will tell you which version. Dunno about help2man or atk. If there are no rpms, you'll have to compile them yourself.
BTW, a program might come inside a package so that there is no package by that name. When you use rpmdrake, you can also search after files inside the package rather than package name.