linux-kernel - Re: [kbuild-devel] [PATCH 25/33] kbuild: use POSIX BRE in headers install target

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Date:	Sat, 21 Jul 2007 18:03:00 -0400
From:	"Mike Frysinger" <vapier.adi@...il.com>
To:	"Sam Ravnborg" <sam@...nborg.org>
Cc:	"Oleg Verych" <olecom@...wer.upol.cz>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	kbuild-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [kbuild-devel] [PATCH 25/33] kbuild: use POSIX BRE in headers install target

On 7/21/07, Sam Ravnborg <sam@...nborg.org> wrote:
> On Sat, Jul 21, 2007 at 03:21:43PM -0400, Mike Frysinger wrote:
> > On 7/21/07, Oleg Verych <olecom@...wer.upol.cz> wrote:
> > >On Sat, Jul 21, 2007 at 04:27:31AM -0400, Mike Frysinger wrote:
> > >[]
> > >> if you want to make some micro optimization in the build install step,
> > >> sure ... but functionally, the difference is irrelevant considering
> > >> sed operates only on individual lines
> > >
> > >That was an attempt to support less sucking userspace in the kernel
> > >development. More readable, more memory/cpu effective, more portable.
> >
> > while you could try and make a claim against memory/cpu effeciency, i
> > fail to see how the first or last claims could possibly be backed up
> >
> > but again, if you feel that strongly about it, you're certainly free
> > to post a patch
>
> I would much more prefer this functionality to be integrated into unifdef.
> There is no good reason to have two different preprocesisng methonds, one
> being the sed based one and the other the unidef one.
>
> A sinlge dedicated program that contian the sum of the functionality would
> be faster too.

which functionality ?  normalizing of whitespace or all these
linux-specific hacks ?  unifdef serves one specific function which is
stated in its manpage: remove preprocessor conditionals from code.
-mike
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