On 09/25/2017 06:35 AM, VanCutsem, Geoffroy wrote:
> Hi Mats,

>> the question is whether it would be better to remap before TARGET_ARCH is
>> set or after.
> 
> In my opinion, we should not overwrite TARGET_ARCH if it's set by the user, 
> so I'd stick with remapping before. This is about trying to be as good as 
> possible at guessing the architecture it should be built for. I'm kind of 
> assuming that if one sets TARGET_ARCH to a specific value, it means they 
> really want it set to something specific and the build system shouldn't 
> overwrite it (or at least not silently).

>From the glance I had, there seems to be a moderately deep belief that
on Linux, the 32-bit arch had better be x86, but that's not the case for
some of the other target OS choices.  If someone manually sets
TARGET_ARCH to, say i586, I don't think the build will work at the moment.
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