linux-kernel - Re: [RFC PATCH] kbuild: avoid some unnecessary rebuild

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Message-ID: <20130317215812.GA23103@merkur.ravnborg.org>
Date:	Sun, 17 Mar 2013 22:58:12 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Christopher Li <sparse@...isli.org>
Cc:	Michal Marek <mmarek@...e.cz>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] kbuild: avoid some unnecessary rebuild

On Sun, Mar 17, 2013 at 02:50:44PM -0700, Christopher Li wrote:
> In the current tip of git tree. If I do a allmodconfig full build, then follow
> by a "make" again without changing any code in the tree.
> There are some object will always get rebuild. e.g. eboot.o.
> I use "make V=2", it shows that the rebuild is due to some object file
> not in $(targets). I did not understand the $(targets) very well, the
> Kbuild.include mention that It is likely a bug in the kbuild if that
> happen.
> 
> I add them in the $(targets) and that seems avoid the unnecessary
> rebuild of several objects. The second "make" has fewer output.
> The clean rebuild seems works fine too.

We got no patch - just some git help stuff.
Seems you mistyped somthing..

	Sam
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