Install your distribution's package named "subversion" OR download and install it from subversion's homepage

Create a folder where you will compile/install KBFX and enter in it. For example do this:

> mkdir -p ~/usr/src/svn
> cd ~/usr/src/svn
				

Checkout the SVN version of KBFX in this way and proceed as follows:

> svn co svn://anonsvn.kde.org/home/kde/branches/extragear/kde3/addons/kbfx
> cd  kbfx_plasma
				

Proceed with the compilation/installation of KBFX:

> ./build.sh
				

If you want always to have the latest version of KBFX you may leave the folder "~/usr/src/svn/kbfx_plasma" intact for future use. When you want to update the source files of KBFX you just need to do svn up in this folder, delete the folder "~/usr/src/svn/kbfx_plasma/build" and start the ./build.sh script i.e:

> cd ~/usr/src/svn/kbfx_plasma
> svn up
> rm -fR build
> ./build.sh