As per summary, check attached build log.
Created attachment 194831 [details]
# Samuli Suominen <firstname.lastname@example.org> (11 Aug 2009)
# For vis5d+, see https://bugs.gentoo.org/show_bug.cgi?id=274281
# For cgal-python, see https://bugs.gentoo.org/show_bug.cgi?id=278106
# These will be removed or fixed in 60 days but they can't be unmasked
# before they have.
Fixed. Renamed 'round' to 'Round' and everything is okayish. The code isn't 64bit safe, and Portage 2.2_pre aborts on install phase so I've marked it as -amd64 but x86 users can still enjoy from it.