Install aRts by running the following commands: ./configure --prefix=&kde-dir; --disable-debug \ --disable-dependency-tracking && make && make install && ln -sfn kde-&kde-version; /opt/kde Another configure option is --enable-final. This option can speed up the build process, but requires a lot of memory. If you have less than 256MB of RAM, this option may cause swapping and significantly slow compilation.