icglue : Tcl-Library for scripted HDL generation ( https://icglue.org/ )
surfer-bin : A waveform viewer with a focus on a snappy usable interface, and extensibility. ( https://gitlab.com/surfer-project/surfer )
yosys : framework for Verilog RTL synthesis ( http://www.clifford.at/yosys/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a xdch47
For Paludis use this rsync : rsync://gentoo.zugaina.org/xdch47-portage
If you have a problem : ycarus(-at-)zugaina.org