mksiofs is no longer distributed independently, its not included in the cdrtools package. I needed it to make an slackware iso, and after emerging mkisofs I noticed that there was no executable named mkisofs. After some research I found out to get the mkisofs executable you have to emerge cdrtools and not mkisofs. Please remove mkisofs package out of the portage tree.
oopss... I meant its "now" included in the cdrtools package. (I mistyped and said "its NOT included in the cdrtools package)
Right, we need to remove the ebuild for mkisofs. Will do as soon as the portage tree unfreezes. Thanks for the report.
Ok, removed. Thanks for the report.