I just have one Debian installation and use chroots for building. One can easily build the Debian package using pbuilder or cowbuilder. I think it's also no big deal to set up Debian chroots on Ubuntu and use them for building.
Here you go: http://people.debian.org/~thansen/ags+libraries_20130206.tar.xz
Here you go: http://people.debian.org/~thansen/ags+libraries_20130206.tar.xz