[Buildroot] [PATCH 1 of 2 v2] infra: introduce suitable-extractor helper function

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Thomas De Schampheleire,

On Fri, 2 Aug 2013 10:50:44 +0200, Thomas De Schampheleire wrote:

> > Do you know why we need this $(firstword ...) call here? In all places
> > in was using directly $(INFLATE$(...)), except in the package
> > infrastructure where it was doing this firstword additional call.
> >
> > It was added by Peter in 2c6390a5d0c01420879e9f23bc89afb19976da4a.
> 
> It wasn't clear to me when I sent the patch, but I figured it didn't hurt.
> But now I think I know: the inflate targets originate from the
> .config, and users can add extra arguments there. In fact, the default
> for $(ZCAT) is:
> BR2_ZCAT="gzip -d -c"
> 
> To check the dependency, we only want to check for 'gzip', but to do
> the actual inflate, we shouldn't use 'firstword'. So, the patch is
> wrong, and I will fix it :)

Ok, makes sense to me now. Indeed this makes the patch wrong :)

Are you annoyed if I integrate this in -next ? I want to release -rc1
today, and I think this kind of stuff is a little bit too sensitive to
be merged now. From your quick feedback on those patches, I have the
feeling that you wanted it in 2013.08, so I don't want to ruin your
hope, but I believe it's a bit too late now. What do you think?

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com