linux-kernel - Re: WANTED: kernel projects for CS students

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Date:	Mon, 15 Oct 2007 18:53:57 +0200
From:	Xavier Bestel <xavier.bestel@...e.fr>
To:	Philippe Elie <phil.el@...adoo.fr>
Cc:	Sam Ravnborg <sam@...nborg.org>, Rik van Riel <riel@...riel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: WANTED: kernel projects for CS students

On Mon, 2007-10-15 at 18:36 +0200, Philippe Elie wrote:
> > > Increase speed for a build with no updates
> > > ==========================================
> > > On a resonably fast machine with a decent config it takes
> > > roughly 10 seconds to do a make where nothing is updated.
> > > Generating one single Makefile is assumed to speed up things
> > > and will in addition allow a simpler syntax as what is used today
> > > for some of the uglier constructs.
> > > 
> > > Contact: Sam Ravnborg <sam@...nborg.org>
> > > Difficulty: 5
> > > Language: Perl or C
> > 
> > Isn't make -j 2 or more implemented by running multiple make in sub-dirs ?
> > Parallel make is more and more used even on cheap hardware.
> 
> Errm, I misread what you said, it can be a single Makefile in each sub-dirs

make -j works fine with an unique Makefile, if that's the question.

	Xav


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