how to specify big-endian build for SH3 toolchain?

[Dan Kegel]

Dan Kegel wrote:
> Robert P. J. Day wrote:
> 
>>   note how calling the compiler uses just the typical -m3 and -m[lb]
>> options, but calling the pre-processor adds in the options contained
>> in the $DEFINES variable.  is this what might be missing from the
>> current crosstool build?  (i'm still working my way thru some of the
>> logic.)
> 
> 
> Yes and no.  Trying to use a single toolchain for both
> big and little endian means multilibbing, i.e. storing
> .o's and .a's and .so's for both big and little endian
> in the same toolchain, and crosstool doesn't try to do that.
> 
> It's a bit of a tradeoff: crosstool aims at simplicity
> (since it was hard enough to get something *simple* working!).
> Multilibbing adds convenience at the cost of simplicity.

One other thing: those defines are typically added automatically
in the spec file, so you shouldn't need to add them in a wrapper
if gcc is configured right, I think.
- Dan

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