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Date: Sat, 26 Feb 2011 14:47:01 -0500
Message-ID: <AANLkTimFd+KFKgiOF8iVoM8Pk77Zy+5CsFs5BCYqCw=L@mail.gmail.com>
Subject: Re: [PATCH] Add ``cloneconfig'' target
From: Arnaud Lacombe <lacombar@gmail.com>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: Jeff Mahoney <jeffm@suse.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Roman Zippel <zippel@linux-m68k.org>, linux-kbuild@vger.kernel.org
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Hi,

On Fri, Feb 25, 2011 at 1:07 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
> We already have something remotely similar in kconfig.
> We use the following list:
> config DEFCONFIG_LIST
> ? ? ? ?string
> ? ? ? ?depends on !UML
> ? ? ? ?option defconfig_list
> ? ? ? ?default "/lib/modules/$UNAME_RELEASE/.config"
> ? ? ? ?default "/etc/kernel-config"
> ? ? ? ?default "/boot/config-$UNAME_RELEASE"
> ? ? ? ?default "$ARCH_DEFCONFIG"
> ? ? ? ?default "arch/$ARCH/defconfig"
>
I may argue that anything within the Linux tree which point
_by_default_ to something outside the tree itself is broken. Say I try
to build a Linux kernel on a system with has its own non-kconfig
`/etc/kernel-config', I guess this would make the configuration fail.

> It would be better to teach kconfig to read /proc/config.gz
> and then add it to the list above.
>
Why ? Thing should be kept simple. kconfig's job is not to know about
the trillion file format which exist in the world, even more if the
implementation is made by building a command[0], executing it in a
separate process and reading the output. This is the shell's job. What
may be useful in the contrary would be to eventually teach kconfig to
read from <stdin>.

 - Arnaud

[0]: which is built depending on an extension, which is even more awful ...

> This list is used if you just type "make enuconfig" without
> any configuration.
>
> ? ? ? ?Sam
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