I've created a Ubuntu PPA for BennuGD. PPA's are online repositories for binary programs that, once you've configured your system, allow you to install & update those programs without effort.
The idea is to upload a new version of BennuGD once a week or so -if there are updates in the SVN code- so that you always have the latest code in your linux box.
As of now, I have only uploaded the bennugd-core and bennugd-core-dev packages (which include bgdc, bgdi, libbgdrtm.so,libbgdrtm.la & libbgdrtm.a) that should allow you to create minimum games and extensions.
There's a small catch, however. the -dev package doesn't yet include the bennugd headers so compilation of your own extensions will fail. I should upload a newer version soon that does include them. Sorry about that.
I will be uploading the rest of the oficially supported extensions (and some of my own projects, like pango/iconv libraries) soon.
Oh, the binaries are there for i386, x86_64 & lpia architectures.
The PPA is at:https://launchpad.net/~josebagar/+archive/ppa/
Hope it's useful.