linux-kernel - Re: [PATCH -mm] replacement for broken kbuild-dont-put-temp-files-in-the-source-tree.patch

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Date:	Tue, 31 Oct 2006 02:14:16 +0100
From:	Horst Schirmeier <horst@...irmeier.com>
To:	Andi Kleen <ak@...e.de>
Cc:	Oleg Verych <olecom@...wer.upol.cz>, Valdis.Kletnieks@...edu,
	Jan Beulich <jbeulich@...ell.com>, dsd@...too.org,
	kernel@...too.org, draconx@...il.com, jpdenheijer@...il.com,
	Andrew Morton <akpm@...l.org>, Sam Ravnborg <sam@...nborg.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -mm] replacement for broken kbuild-dont-put-temp-files-in-the-source-tree.patch

On Tue, 31 Oct 2006, Andi Kleen wrote:
> 
> > The problem is, this brings us back to the problem where this whole
> > patch orgy began: Gentoo Portage sandbox violations when writing (the
> > null symlink) to the kernel tree when building external modules. What
> > about using $(M) as a base directory if it is defined?
> 
> I think Jan's $(objdir)/.tmp proposal would be cleanest. Just someone
> has to implement it :)
> 
> -Andi

I'm not sure what you mean by $(objdir); I just got something to work
which creates the /dev/null symlink in a (newly created if necessary)
directory named

$(firstword $(obj-dirs) $(M))/.tmp

which seems to be a good place for both normal kernel builds and
external modules. External module builds seem not to set $(obj-dirs)...
Objections?

Kind regards,
 Horst

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