boost : Boost Libraries for C++ ( https://www.boost.org/ )
ooml : C++ Object Oriented Mechanics Language ( https://github.com/avalero/OOML )
rinutils : C11 / gnu11 utilities C library by Shlomi Fish / Rindolf ( https://github.com/shlomif/rinutils )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a salfter
For Paludis use this rsync : rsync://gentoo.zugaina.org/salfter-portage
If you have a problem : ycarus(-at-)zugaina.org