linux-kernel - Re: [patch 3/3, resend] kbuild: correctly skip tilded backups in localversion files

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Date:	Mon, 12 Feb 2007 14:53:29 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Tony Luck <tony.luck@...el.com>
cc:	Oleg Verych <olecom@...wer.upol.cz>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jesper Juhl <jesper.juhl@...il.com>,
	Roman Zippel <zippel@...ux-m68k.org>,
	Bastian Blank <bastian@...di.eu.org>,
	Sam Ravnborg <sam@...nborg.org>
Subject: Re: [patch 3/3, resend] kbuild: correctly skip tilded backups in
 localversion files

On Mon, 12 Feb 2007, Tony Luck wrote:
> 
> Git bisect fingers this patch (which is in Linus' tree as commit
> 76c329563c5b8663ef27eb1bd195885ab826cbd0) as the culprit
> for double adding the contents of the localversion file.  E.g.
> 
> $ echo -tiger-smp > localversion
> $ make prepare
> $ make kernelrelease
> 2.6.20-tiger-smp-tiger-smp

Heh. It's because we search for the localversion files in both $objtree 
and $srctree, and normally they are one and the same - so it finds the 
same file twice.

The old code did the same thing, but with the "make" $(sort ..) function, 
which apparently removes duplicates. We should use "sort -u" here.

Both the old code *and* the new code is just horribly complex. The old 
code appears to suffer from GNU $(wildcard ..), the new code is almost as 
ugly in doing an unnecessarily complex "find".

Oh well.

		Linus
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