I think it´s the same as in KDE 2.0:
"To install KDE 2.0 for development, you will need, at minimum, the following packages:
qt-2.1.0—The Qt toolkit library
kdesupport—Libraries not developed by the KDE project, but needed to run KDE applications
kdelibs—The KDE libraries
Be sure to install these packages first and in the order given. The other packages are optional.
For a working desktop, you will also need
kdebase—The window manager (KWin), file manager (Konqueror), panel (Kicker), and other programs needed to create a working desktop"
Hope it helped,