And have fun, that is _not_ in Portage! (I found it by chance because another packages bundles it).
It's in tree now; have fun :)
I tried to make it build against system lib without success:
help is highly appreciated ;)
Fixed in https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=8eb8edc7566fcab7b19f136338c06f6bd0f5b64e
I also added some patches found in Redhat, Fedora, Debian and Ubuntu. This time we cannot avoid eautoreconf due to tinyxml unbundling but it's not like it is a big package and not like it is going to receive any updates in the foreseeable future.
FTR, I collected these patches https://github.com/EvaSDK/rarian/commits/master since I could not find upstream repository.