confusion in base regarding [option os.arch] and ${os.arch}

[Anders F Björklund]

Joshua Root wrote:

>> I would tag it with both, just to be on the safe side. A poorly- 
>> written
>> configure script could easily build a different universal binary on a
>> PowerPC Mac than it would on an Intel Mac. It doesn't hurt to always
>> record the arch of the machine that did the build, and might at some
>> point prove useful.
>
> But the architecture of the machine that did the build has nothing  
> to do
> with build_arch...

It should have, otherwise it would be cross-compiling to another arch ?
(which is interesting in itself, but not supported by MacPorts afaik)

Not sure if it matters if the "extra" fat architecture is ppc or x86_64,
when talking about +universal archives built on the regular i386 arch ?

--anders