Ditto what Joe says. If you're running SH4 with Linux, you need to start a new thread right now and get into the details. I've tried and some people I consider experts have tried without any luck. Every time I don't have to boot Windows and can boot up my Ubuntu installation is a victory for me.
I know that every program I have that works both in Windows XP and Ubuntu (Firefox, Thunderbird, Inkscape, etc) runs approximately twice as fast in Ubuntu. I'd love to see that happen in SH4. You'd be a hero in my book!
See? I have successfully installed the program under WINE but can't get it to run.