Upstream only supports bug reports happening with their binaries. Currently it is not possible to compile consed-20 anyways (bug #346801) so I created an ebuild for the binaries. It does not install the libstdc* from upstream, though. The ebuild could/should install only the 32bit or 64bit binaries based on some arch variable testing. I couldn't how to do it nor in any Gentoo ebuild docs. The ebuild has to compile two tools from sources, so it is a kind of semi-binary package. Just diff consed-19-r2.ebuild to consed-bin-20.ebuild and you will see very few differences. Have added the direct perl dependency (bug #351133). It is in science overlay as of now. Am not sure whether it was police to copy over /usr/portage/sci-biology/consed/metadata.xml under consed-bin/ tree, if not then place my email adress into it instead of weaver@g.o. Sorry Andrey. ;-)
Created attachment 259303 [details] consed_to_consed-bin.diff Intentionally the ebuild does not introduce /usr/bin/consed as a link to the real binary. And it does not block with consed package which is asking for a file collision on mktrace, phd2fasta, sff2scf tools.
We had meanwhile working ebuilds for newer versions, compilable with gcc-4.7.4 or earlier.