I'm trying to build OGRE 1.6.3, but it complains about libCEGUI. Apparently libCEGUI version 1.7.1 doesn't work with 1.6.3. Even with using version 1.6.5 it won't compile. On Mandriva and Fedora they seem to use CEGUI 0.6.1.
There is OGRE version 1.7.1, but that uses a completely different form of compiling (different file name, uses cmake).
So I'm pretty much stuck on this one. Going to have to completely rework the specfile just to use 1.7.1.