--prefix=&kde-dir; : This option tells the process to install the package in &kde-dir;. We put aRts here because this package is required before installing KDE. --disable-debug : This option causes the system to be compiled without debugging code. --disable-dependency-tracking : This option speeds up one time builds. ln -sfn &kde-dir; /opt/kde : This command creates a link for access to KDE. If a newer version of KDE is released, the new system can be built by changing the --prefix location and then set up by changing the link as this command does.