linux-kernel - Re: Additional kconfig targets (cloneconfig, nonint

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Message-ID: <20080502105630.GA20955@uranus.ravnborg.org>
Date:	Fri, 2 May 2008 12:56:30 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	linux-kbuild <linux-kbuild@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...emonkey.org.uk>,
	Roland McGrath <roland@...hat.com>,
	Andres Salomon <dilinger@...ued.net>
Subject: Re: Additional kconfig targets (cloneconfig, nonint_oldconfig etc)

> >(The other frontends are left out on purpose).
> >The challenge here is to come up with a syntax that
> >allows us to select between the three behaviours,
> >while keeping backward compatibility.
> >
> >The best suggestion I have so far is to say that:
> >a) if defconfig is specified then we use method 1)
> >b) if oldconfig is specified then we use method 2)
> >c) if newconfig is specified then we use method 3)
> 
> [Where is 1) defined?]

1) automated - select defaults for all new symbols
   => It is used for "make defconfig, make *_defconfig" today

> Ok and these are doing .. what?

> ># Enviroment variables affecting kconfig
> >KCONFIG_ALLCONFIG

Specify input file in .config format to adjust a all*config run

> >KCONFIG_NOSILENTUPDATE
If set then error out if .config is modified

> >KCONFIG_CONFIG
Provide alternative name for .config

> >KCONFIG_OVERWRITECONFIG
If you set KCONFIG_OVERWRITECONFIG in environment, Kconfig will not break
 symlinks when .config is a symlink to somewhere else

> >KCONFIG_NOTIMESTAMP
Do not put timestamp in .config

> >KCONFIG_AUTOCONFIG
Provide alternative name for: include/config/auto.conf

> >KCONFIG_AUTOHEADER
Provide alternative name for include/linux/autoconf.h 




> Used for..?
All used to hardcode specific values in all*config builds.

> >#input files (aparts from the mandatory ones)
> >all.config
> >allno.config
> >allmod.config
> >allyes.config
> >allrandom.config

	Sam
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