qt 2.0.1 is missing the OpenGL extention (libqgl). This makes it impossible to build OpenGL applications using the extention. The headerfiles and documentation is there, but the library itself is missing. It is part of the qt distribution, in extensions/opengl/src/.
It's not a bug, it's a decision. We didn't build the OpenGL add-on as we don't ship an OpenGL implementation (Mesa is just in Powertools). This will change with 6.2, which will include both Mesa and Qt-GL.