gflags : Google's C++ argument parsing library ( http://gflags.github.io/gflags/ )
kashmir : Library is provide functionality that not present in the C++ standard library. ( https://github.com/Corvusoft/kashmir-dependency )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a einflay
For Paludis use this rsync : rsync://gentoo.zugaina.org/einflay-portage
If you have a problem : ycarus(-at-)zugaina.org