as the syntax of EhBASIC's source code is not compatible with gnu-as, I use a cumbersome way to build a complete Basic binary. See http://www.ist-schlau.de/software.html#Basic. Maybe someone is interested in porting the syntax to gnu-as?
You are right. The website is down. I haven't heard from him since months. The source I have is pretty old since I skiped Lee's updates for a long time. Well, better than nothing. Here you are: