Hi,

I am porting my backend to GCC47 and have been jumping through some 
hurdles. libgcc is trying to compile unwind*.c files which I can't 
remember being there for GCC46. I deduce this files have to do with 
exception support GCC47 seems to want to make exceptions mandatory even 
though my backend doesn't really 'support' them (in the sense that our 
tests don't care about them).

unwind*.c have a lot of variable definitions to mode SI as being a word, 
However, in my case a word is actually in mode QI (16bits). Is there 
anything I can do to stop libgcc from trying to compile these files or to 
make unwind compatible with my backend besides going blindly changing SI 
mode in variable declaration to QI mode?

Cheers,
-- 
PMatos

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