I've been trying to compile KDE 3.3.1 on an AMD Athlon 64, but I bumped into a problem... i had the trolltech QT libs + devel installed (the 64 bit ones - MDK10.1 RC1 x86_64), but when I try to compile a part of KDE that depends on QT, it fails saying I don't have the headers / devel installed. I do have it and pkg-config returns says I have qt-mt.

I've downloaded QT and I am recompiling it, but there's a question that nags me... now that I recompile both QT and KDE, will they be 64 bit or 32 bit? I'm trying to get everything out of my CPU using 64bit instructions, so I'd like to get the output on 64 bit. If the output is 32 bit, how can I go 64?

Okay, while I was writing this post, the QT crashed with an error:

/usr/bin/ld: cannot find -lXrender

Where's this lib, and what do I need to install to satisfy the depndency?