Re: [PATCH] KBuild: silence "'scripts/unifdef' is up to date."

[Michal Marek]

On Tue, Mar 15, 2011 at 01:40:37PM +0000, WANG Cong wrote:
> On Mon, 14 Mar 2011 23:34:25 -0700, Mike Waychison wrote:
> 
> > Patch applies to 2.6.38-rc8.
> > 
> > While changing our build system over to use the headers_install target
> > as part of our klibc build, the following message started showing up in
> > our logs:
> > 
> > make[2]: `scripts/unifdef' is up to date.
> > 
> > It turns out that the build blindly invokes a recursive make on this
> > target, which causes make to emit this message when the target is
> > already up to date.  This isn't seen for most targets as the rest of the
> > build relies primarily on the default target and on PHONY targets when
> > invoking make recursively.
> > 
> > Silence the above message when building unifdef as part of
> > headers_install by hiding it behind a new PHONY target called
> > "build_unifdef" that has an empty recipe.
> > 
> > Signed-off-by: Mike Waychison <mikew@xxxxxxxxxx> ---
> 
> Acked-by: WANG Cong <xiyou.wangcong@xxxxxxxxx>

Applied to kbuild-2.6.git#kbuild, thanks.

Michal
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