linux-kernel - Re: [PATCH] Documentation/kbuild: correct variable definitions in makefiles.txt

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Date:	Fri, 1 Oct 2010 22:56:46 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	matt mooney <mfm@...eddisk.com>
Cc:	Sam Ravnborg <sam@...nborg.org>,
	Randy Dunlap <rdunlap@...otime.net>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] Documentation/kbuild: correct variable definitions in
 makefiles.txt

On Wed, Sep 29, 2010 at 04:19:04PM -0700, matt mooney wrote:
> On 19:50 Wed 29 Sep     , Sam Ravnborg wrote:
> > On Wed, Sep 29, 2010 at 05:03:29PM +0200, Michal Marek wrote:
> > > On 20.9.2010 08:33, matt mooney wrote:
> > > > Change $(src) and $(obj) definitions to state the path as absolute and
> > > > not relative.
> > > 
> > > It _is_ a relative patch, AFAICS. What makes you think otherwise?
> > 
> > With extenal modules $(src) and $(obj) are absolute - but in nomal
> > use they are relative.

Ah, I see. Then we should simply say "path", without any adjectives.


> > And again in normal use they are also equal. I usually say that we
> > have two just to document what is srource and what is generated.
> 
> Ah, I see. Sorry, I should have looked into this more. Now you did say
> in normal use they are equal, but I thought they were also equal when
> used for an external module too.

Yes, they are, using $(src) for shipped files and $(obj) for generated
ones is just a service for the reader of the Makefile.

Michal
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