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Re: recording flags specified to configure scripts

From: Mike Frysinger
Subject: Re: recording flags specified to configure scripts
Date: Tue, 10 Mar 2009 16:23:35 -0400
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On Tuesday 10 March 2009 06:49:12 Keith Marshall wrote:
> On Tuesday 10 March 2009 07:18:26 Ralf Wildenhues wrote:
> > 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.

later --host options clobber previous ones dont they ?  so you could use the 
original args and just append --host=$build ...

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