I don't know if I should be on a Kubustu forum or this one, please let me know, but here goes anyway.
I have just loaded Qt-4.4.0 on my Kubuntu 8,04. I have checked the "/usr/local/Trolltech/Qt-4.4.0 items against my Kubuntu 7.10 items, they are the same.
I have the
PATH=/usr/local/Trolltech/Qt-4.4.0/bin:$PATH
export PATH
in the .profile file.
My existing programs run fine. I can edit and "Build" the changes using QDevelop, but If I try to "Rebuild", I get a several pages of errors:
pete@myComputer:~/Desktop/pm-08-07-03/test/pm$ make
g++ -c -pipe -Wall -W -g -D_REENTRANT -DQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT -I/usr/share/qt3/mkspecs/default -I. -I. -I/usr/include/qt3 -I/usr/X11R6/include -I/usr/X11R6/include -o baseform.o baseform.cpp
baseform.cpp:32:17: error: QtGui: No such file or directory
baseform.cpp:34:17: error: QFont: No such file or directory
baseform.cpp:35:23: error: QPushButton: No such file or directory
etc. etc.
i have
#include <qapplication.h>
#include <QtGui>
#include <QFont>
#include <QPushButton>
etc.
in my "baseform.cpp" directory.
I get the same list of errors if I try to "make" a "tar" program.

thanks for your help