Bubbling…

There also an easier way to get KDE 4 which I used myself. For this one, you don’t need to change your .bashrc or anything else. Just checkout sources wherever you want and you’re done ( of course you must install dependencies first ).

after you checkout SVNs in ‘/home/KDE4devel/SRCs/KDE/’ you can just make another folder, let’s say ‘/home/KDE4devel/Build/KDE/’
open Terminal/Konsole and then type:
su -
cd /home/KDE4devel/Build/KDE
cd kdelibs
cmake && make && make install
cd ..
cd kdepimlibs
cmake && make && make install
cd ..
cd kdebase
cmake && make && make install
cd ..
cd “yourmodule”
cmake && make && make install

OR if you have changed your .bashrc, you can do for each one:

cd /home/KDE4devel/SRCs/KDE/4.0/yourmodule
cmakekde

(it MIGHT work, I just made it up right now )

WARNING: THIS WILL REPLACE YOUR KDE 3.5 DESKTOP.
WARNING: YOU WILL NEED ROOT PRIVILEGES.

If you try this one, leave comment for me whether if it worked for you or not. Thanks

now we get to really build KDE 4.
first of all, you should change you ~/.bashrc file and I’ll tell you how and what to change.

go to your home directory and
View > Show hidden files
now if you look closely, you’ll find a file called “.bashrc” among the hidden files.
open that with a text editor ( in 99% cases just double click it )

copy the .bashrc in you original home ( /home/username/ ) into your KDE4devel account ( /home/KDE4devel/ ) it should replace it.

copy/paste the contents of this .bashrc into your .bashrc, after “#user-specified commands” ( or something like that ).

now you’re ready to go. By the way, this .bashrc you just did, was only to make life easier but it is in fact necessary and you HAVE TO do it

Building kdelibs
the first module ( package ) you should make/compile, is kdelibs. You SHOULD make this first of all.
to compile kdelibs, just do this:

cd
cs
mkdir KDE && cd KDE
svn checkout svn://anonsvn.kde.org/home/kde/branches/KDE/4.0/kdelibs
cd kdelibs
cmakekde

note: cs is not a typo. you made this command available by editing your .bashrc file, look into that for more info.
for troubleshooting stuff look into here.

Building kdepimlibs
next comes the kdepimlibs. the recipe is this:

cs KDE
svn checkout svn://anonsvn.kde.org/home/kde/branches/KDE/4.0/kdepimlibs
cd kdepimlibs
cmakekde

again, for troubleshooting stuff go here.

Building kdebase
next goes to kdebase.
recipe:

cs KDE
svn checkout svn://anonsvn.kde.org/home/kde/branches/KDE/4.0/kdebase
cd kdebase
cmakekde

troubleshooting stuff -> here.

from now, you can build all of the modules you want with the same fashion. For a minimal KDE 4 session you only needed those 3 modules and that’s all.
after you finished compiling all the modules you want, you just log out, and log in again, hopefully everything will be fine and you will have your KDE 4 session

Good Luck with your building ( building as in compiling )
note: I got this information from here.