Running configure I get this message:

checking for Qt... configure: error: Qt (>= Qt 3.3) (library qt-mt) not found. Please check your installation!
For more details about this problem, look at the end of config.log.
Make sure that you have compiled Qt with thread support!

I can't fully understand what the problem is. I have Qt 3.3.3 installed, as well as development libraries. What more is needed?

libqt3-mt probably