Re: [PATCH 35/46] kbuild: change kbuild to not rely on incorrect GNU make behavior

["Paul D. Smith" <psmith@gnu.org>]

%% Jan-Benedict Glaw <jbglaw@lug-owl.de> writes:

  jg> On Tue, 2006-03-21 17:20:57 +0100, Sam Ravnborg <sam@ravnborg.org> wrote:

  >> -.PHONY: tar%pkg
  >> +PHONY += tar%pkg

  jg> This part is wrong. $(PHONY) isn't subject to pattern matching,

You're correct that it won't do what the author apparently expected,
however it WILL do exactly what the previous versions of kbuild used
to do.

I wrote:

> To: Sam Ravnborg <sam@ravnborg.org>
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: [PATCH] change kbuild to not rely on incorrect GNU make behavior
> From: "Paul D. Smith" <psmith@gnu.org>
> Date: Sun, 5 Mar 2006 19:41:07 -0500
    ...
> Note that this won't do what you expect.  tar%pkg is a pattern rule,
> but .PHONY doesn't take patterns so you're declaring the actual file
> named literally 'tar%pkg' to be phony.

  jg> so all targets that match 'tar%pkg' must be listed
  jg> here. Fortunately, that's only three:

  jg> PHONY += tar-pkg targz-pkg tarbz2-pkg

This would be more correct, indeed; but note this change is orthogonal
to the purpose and requirements of the patch provided.

Of course, that doesn't mean they shouldn't be combined if that's
acceptable to the patch-masters! :-).


Cheers!

-- 
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 Paul D. Smith <psmith@gnu.org>          Find some GNU make tips at:
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