Chris, There are existing tool chains that I'm sure someone else will recommend. I built my own and I prefer that approach. You learn a lot by doing it. A good reference for building tool chains can be found in the book "Building Embedded Linux Systems" by Karim Yaghmour. See <http://www.oreilly.com/catalog/belinuxsys/>.
Regards, Charlie ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/