There are also binary packages there, i486 for slackware-13.1 and x86_64 for slackware64-current.
Oh, and most important, my slackbuild was accepted at www.slackbuilds.org. But, the version which is available there is the old one. Wait just a bit to download it (if you don't trust the script from my github repository) because I have already submited the update to SBo.
OK, job done