After compiling qt-x11-opensource-src-4.4.1(http://trolltech.com/developer/downloads/qt/x11) with default options under Red Hat EL4 (gcc version 3.4.3) , i get /usr/local/Trolltech/Qt-4.1.4 , not Qt4.4.1, why Im sure the system have not been installed any other version of QT before.

I canot use any classes introduced after Qt 4.2 ,because there are no relevant head files in the include directory.(eg. QFontComboBox ) But i can find those .h files in the source file i downloaded.

any ideas?