http://www.objsw.com/CrossGCC/

It's dated (over a year old), but it still works. I used it just the other
day to build GCC, binutils, and libraries for NetBSD/Alpha on a DEC
3000/600M using FreeBSD/Alpha on a Personal Workstation 500au. Good luck!

-- 
Wes Kurdziolek
Virginia Tech Computer Science Lab
UNIX System Administrator
E-mail: wkurdzio@cslab.vt.edu
Voice: +1 (540) 231-3457
Office: 116A McBryde