Qt is a cross-platform application framework that is widely used for developing application software with a graphical user interface (GUI) (in which cases Qt is classified as a widget toolkit), and also used for developing non-GUI programs such as command-line tools and consoles for servers.

Install the Qt support libraries and framework. Use an appropriate package:
qt-4.8-polar plus pet thread packaged by darkcity
distro.ibiblio.org/quirky/
qt-4.8.0.pet and qt-DEV-4.8.0.pet for Saluki
qt-3.3.8.pet
Also see QtonPuppy

+alsa-lib,+bzip2,+dbus,+fontconfig,+freetype,+glib,+grep,+libdrm,+libjpeg,+libtiff,+libxml2,+mesa,+openssl,+tar

Qt Apps List:
Qt4 apps packaged by pemasu

QtPuppy
software
QtonPuppy
Qt & Scim

Make Qt4 apps match the look of Gtk2 blog post
Qt graphical user interface
source code
linuxfromscratch.org
t2-project.org
qt4_static_DEV-4.5.3.pet
Compiling Qt 3.0.3 thread