linux-kernel - Re: Unfortunate infinite make recursion

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Message-Id: <E1IZCNu-0000ai-Rt@be1.lrz>
Date:	Sat, 22 Sep 2007 23:19:30 +0200
From:	Bodo Eggert <7eggert@....de>
To:	Jan Engelhardt <jengelh@...putergmbh.de>, sam@...nborg.org,
	zippel@...ux-m68k.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Unfortunate infinite make recursion

Jan Engelhardt <jengelh@...putergmbh.de> wrote:

> You can cause a recursion in kbuild/make with the following:
> 
> make O=$PWD kernel/time.o
> make mrproper
> 
> Of course no one would use O=$PWD (that's just the testcase),
> but this happened too often:
> 
> /ws/linux/linux-2.6.23$ make O=/ws/linux/linux-2.6.23 kernel/time.o
> (Oops - should have been O=/ws/linux/obj-2.6.23!)
> 
> The make O=$PWD truncates the Makefile, making it necessary to run `git
> checkout Makefile` - should you have git; or reextract the tarball
> (should you /still/ have it). Well, can we catch this case somehow?

You can test for the existence of MAINTAINERS in the build dir and abort
if it's there.
-- 
My computer isn't that nervous...it's just a bit ANSI. 

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