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

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Date:	Tue, 13 Feb 2007 01:32:58 +0100
From:	Oleg Verych <olecom@...wer.upol.cz>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Tony Luck <tony.luck@...el.com>,
	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, Feb 12, 2007 at 02:53:29PM -0800, Linus Torvalds wrote:

Hallo.

> 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.

Heh. Why one ever going to bloat $(srctree) to add more "dontdiff" and
such, where build is supporting dirty output?

While this is my mis-tesing,

> 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".

any reasons to have multiple files for localversion(s), in $(objtree)
also? Exept one, that somebody used to use it, mm-tree doesn't btw.

As i opposed to Romans's "make" solution, because it wasn't obvious, i
agree current has heavy `find', but what else you can propose? I think,
it's not make's job after all.

> Oh well.

Thanks for testing!
____
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