compile help

[Bob Lockie]

I'm trying to compile gcc-3.3 from source but I'm getting errors from 
/usr/include/*.h
Can I replace everything in that directory that'll work for sure?

Is there a configuration of where to look for include files?
For some reason:
/tmp/stages/stage1/usr/lib/gcc-lib/i586-pc-linux-gnu/3.2.1/include/stdio.h
The following is being included. :-(

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