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Re: PATCH [1/n]: Initial x32 support
On Thu, 15 Mar 2012, Roland McGrath wrote:
> > > * configure.in: Add sysdeps preconfigure fragment support.
> >
> > The principle of having such a fragment is good, but I think you're
> > running them too late. I think you should run sysdeps preconfigure
> > fragments (all of them) from libc at around the same time they are run for
> > add-ons. This allows libc targets to look more like ports ones in that
> > the code
>
> I'm not sure I follow this notion at all. The reason I added preconfigure
> was for things that need to influence the sysdirs list algorithm, like
> setting base_machine and so forth. Once the sysdirs list has been chosen,
> we have sysdeps configure fragments. So what's a sysdeps preconfigure for?
The idea is that all of them would be run (whatever directory they are
in), just as they are in add-ons (with the same convention that it's a bug
for such a fragment to do anything for an unrelated target), but logically
sysdeps directories seem a better place for architecture-specific logic
that sets base_machine than toplevel configure.in does.
--
Joseph S. Myers
joseph@codesourcery.com