ffcall : Build foreign function call interfaces in embedded interpreter ( https://www.gnu.org/software/libffcall/ )
libsigsegv : Library for handling page faults in user mode ( https://www.gnu.org/software/libsigsegv/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a lisp
For Paludis use this rsync : rsync://gentoo.zugaina.org/lisp-portage
If you have a problem : ycarus(-at-)zugaina.org