Getting Started/Build/KDE4.1
Objectives
You probably want to keep your current KDE-3.5.x installation till you feel that KDE-4.x.y meets your needs for actual day to day use of your computer. Yet, you want to be able to change over with a minimum of work when the time comes to make the switch.
Method
The best way to accomplish this is to install the needed libraries on your system in the usual manner. Convention is that these should be installed in the /usr/local/ directory. By default, Troll Tech installs Qt in: /usr/local/Trolltech/Qt-4/. The current KDE-4.0 release branch should be built against Qt-4.3.x (the latest in this branch is 4.3.3 which should be used unless there are reasons not to use it). It is best to install KDE-4.x.y in its own directory so that the directory can be deleted if some large problem occurs. I will be using /usr/local/KDE-4.0/ but you can call it whatever you want.
We will keep configurations straight by using a separate user for accessing KDE-4.x.y. This user account will contain your configurations and will have a script to set the environment variables (.bash_profile if using Linux).
Installation
Create the User Account
Use whatever method you wish to create a new user account. Mine is called: "KDE4". Then edit or create the user specific login script (.bash_profile for Linux). There is a lot that goes into this:
Use what