PATCH [1/n]: Initial x32 support

[Joseph S. Myers]

On Thu, 15 Mar 2012, Roland McGrath wrote:

> If what you propose is just sourcing ${srcdir}sysdeps/*/preconfigure before
> ${add_on}/sysdeps/*/preconfigure, then I suppose that is alright.  I'm not

Yes, that's what I propose.

> especially convinced it's not more baroque to do that than just to have the
> logic directly in the top-level configure.in.  But it does mean that an
> (appropriately disciplined) add-on port becomes an integrated port just by
> adding its files directly the main tree, which is an attractive notion.

Indeed, I think moving ports about should ideally just involve moving 
appropriate sets of directories like that.

-- 
Joseph S. Myers
joseph@codesourcery.com