linux-kernel - Re: Better way to force a rebuild

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Date:	Wed, 10 Dec 2008 15:19:56 -0500 (EST)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Sam Ravnborg <sam@...nborg.org>
cc:	linux-kbuild@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	zippel@...ux-m68k.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Better way to force a rebuild


On Wed, 10 Dec 2008, Sam Ravnborg wrote:

> On Wed, Dec 10, 2008 at 02:48:35PM -0500, Steven Rostedt wrote:
> 
> Looking a bit deeper into this.
> I see that we have in Makefile.build:
> 
> define rule_cc_o_c
>         $(call echo-cmd,checksrc) $(cmd_checksrc)                         \
>         $(call echo-cmd,cc_o_c) $(cmd_cc_o_c);                            \
>         $(cmd_modversions)                                                \
>         $(cmd_record_mcount)   
> 
> So you want everyting to be rebuild if the command above changes.
> That should be doable - and it is indeed a bug that we do not do so.
> The integration of record_mcount needs to be improved.

Yes, that is exactly what I want. Now the next step is to implement this. 
I'm not that strong on the kbuild system to know how.

Thanks,

-- Steve

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