Makefile changes for symbols

Can someone give me the Makefile changes to make a LinuxBIOS with
symbols?  I tried adding "-gdwarf-2" to CFLAGS, but I'm not sure where
the unstripped output would be.

Are there any features in the code that are useful in debugging
LinuxBIOS?
Any defines that should change as well?

Someone must have some experience with source code level debugging of
LinuxBIOS with an American Arium ECM-50.  Thanks.

Steve Kimball
Benchmark Electronics
Hudson, NH