why linking problem with QGLWidget???

[Shuchi Agrawal]

Do you have both Qt3 and Qt4 installed?
It could be that the qmake of Qt3 is called.

yes, both are installed because Qt3 came with fedora core 5 and i installed Qt4.2.2. but i want Qt4.2.2 to work in every case. how can i do that?

[high_flyer]

one quick way to fix it is to change the order of the Qt3 and Qt4 paths in your PATH variable.
Have the Qt4 path be first.
You might want to check that LD_LIBRARY_PATH knows where your Qt4 libs are.
End you should change your signature, since you are on Fedora and not XP