This ebuild currently does not have any amd64 keywords (not even with ~). I don't think there is a particular reason for this - since i needed it, i just added amd64 to the KEYWORDS list of the v1.26 ebuild, and it compiled fine. It also seems to be working as expected. Shouldn't it have at least an ~amd64 then? Could somebody add this please ?
Tested on 'lo and to/from an x86 box. Fixed InCVS, thanks.