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The qt library/toolkit does not vome standard with most distributions. I do not know whether Mandrake bundles it. From the error message it appears that you do not have qt installed. I suggest you visit:
It's only needed when you compile the program. When you exit the shell the QTDIR environment variable is lost anyway, thus undoing all of it's effect.
Except for the executable that you configured/compiled with the QTDIR set, which will "remember" where to find the Qt2 lib's.
Make sure that the QTDIR path is activated after you added
to the .bashrc file in your home directory. To check that you do indeed have a QTDIR environment variable type
You should then see
The .bashrc file is read when you open a new shell, so when you open a new shell the QTDIR will be set. If you log out of KDE and inn again and type
you will also see that the QTDIR env. var is set.
I was told that I needed to install the Qt Development Libraries (qt-devel, I think) in order to compile any application that uses Qt. I haven't had time to mess with it though. You might try to download and install those, then try to compile the application again.