I'm running my Mandrake Linux 10.1 RC1 x86_64 box with KDE 3.2.3 and QT3.3 as I recall. I've tried to compile KDE3.3.1, but the configure scripts didn't see the qt-mt libraries.
Yes, I have the lib64qt3-devel rpm installed and yes, pkgconfig --list-all lists the qt-mt package. I've created symlinks called libqt-mt.so where it seemed it was missing (aka /usr/lib/qt3/lib64 and /usr/lib/qt3/lib), but it didn't work. I ran ldconfig a thousand+1 times agf\\fter every try, and still no luck.
So, I quit trying to use the provided RPM, and got the latest free qt-x11 package and I started recompiling everything. The konstruct took care of doing the right stuff.
Right about the middle of the compile, when it was about time to link the files, BOOOm, library Xrender not found :O. That's from Xorg, right? Doesn't matter, as it seems a replay now.
What can I try to get it to compile everything all right? I'm thinking it's because I have lib and lib64 dirs (for the libs compiled with 32 and 64 bit),, but I'm stuck now...
edit: I'm using -march=athlon64 option for gcc/cc