linux-kernel - Re: Makefile asking for mrproper on new checkout with KBUILD

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Date:	Thu, 17 Jun 2010 10:43:11 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Boaz Harrosh <bharrosh@...asas.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Makefile asking for mrproper on new checkout with KBUILD_OUTPUT

On 17.6.2010 00:05, Boaz Harrosh wrote:
> 
> I get this problem: When a few Header files are changed, like when doing
> a git checkout the Makefile is complaining about mrproper needed.
> 
> Now I'm building a:
> 	make ARCH=arch KBUILD_OUTPUT=.build_arch/
> 
> But a: 
> 	make ARCH=arch KBUILD_OUTPUT=.build_arch/ mrproper
> 
> Will not help. What the Makefile wants is a:
> 	make mrproper
> 
> doing the "make mrproper" does solves it.
> It used to be fine, I'm not sure when it started to break.
> 
> How can I debug this to see what is the offending files?

The makefile errors out if the source directory is configured (*),
because having random object files in the source directory would confuse
the VPATH build.

(*) Means: either .config or include/config exists

Michal
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