boost-build : A system for large project software construction, which is simple to use and powerful ( http://www.boost.org/doc/tools/build/index.html )
depot-tools : Tools for working with Chromium development. Needed for projects published by Google ( http://dev.chromium.org/developers/how-tos/depottools )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a OSSDL
For Paludis use this rsync : rsync://gentoo.zugaina.org/OSSDL-portage
If you have a problem : ycarus(-at-)zugaina.org