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Re: recording flags specified to configure scripts
From: |
Keith Marshall |
Subject: |
Re: recording flags specified to configure scripts |
Date: |
Tue, 10 Mar 2009 10:49:12 +0000 |
User-agent: |
KMail/1.9.10 |
On Tuesday 10 March 2009 07:18:26 Ralf Wildenhues wrote:
> Undocumented (so watch out when updating Autoconf), but:
> eval "$ac_configure_args"
Didn't that get clobbered, in some not so distant past releases?
(autoconf-2.60 and 2.61 IIRC; I can't remember if it was fixed in
2.62 or not, but it is, in 2.63).
> I suppose Autoconf could provide a macro to access this variable
> which we could then document.
That would be useful. I've used $ac_configure_args, filtered, to pass
to a sub-configure in a hybrid build, (where the main application is
cross-compiled, but the build process needs to create some tools, for
its own use on the `build' platform; the sub-configure needs to be
invoked with the --host spec filtered out, along with any reference
to host_alias, and IIRC, I also filtered out similar references which
relate to the --build spec; furthermore, the sub-configure cannot
share a cache file, with the main configure process). A documented,
and therefore hopefully stable, mechanism to achieve that objective
would be much preferred, to a technique based on an undocumented
feature, such as is currently required.
--
Regards,
Keith.