Any luck with your install Calvin?
Arduino-0100 will need the cross-avr and the avr-libc also.
This link helped my install on SLED 10 http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1186739311
If you do this like I did note that the Cross-AVR puts it in OPT/CROSS/AVR as you indicated. The AVR-LIBC puts it in a completely different location. I need to work on making a instructions on how I got this to work on mine. Been too busy to play with this coolz stuff.