From: Michal Marek <mmarek@suse.cz>
To: Arnaud Lacombe <lacombar@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
David Woodhouse <dwmw2@infradead.org>,
linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org
Subject: Re: [PATCH 2/2] Enable 'make CONFIG_FOO=y oldconfig'
Date: Tue, 09 Aug 2011 16:14:11 +0200 [thread overview]
Message-ID: <4E4140B3.7090802@suse.cz> (raw)
In-Reply-To: <CACqU3MWn-OQVfLH96E+AeTCEjUw5+girXbuNgmUvXrEQuBe4vg@mail.gmail.com>
On 31.7.2011 02:05, Arnaud Lacombe wrote:
> Hi,
>
> On Sat, Jul 30, 2011 at 7:53 PM, H. Peter Anvin<hpa@zytor.com> wrote:
>> On 07/30/2011 04:44 PM, Arnaud Lacombe wrote:
>>>
>>> Beside that, the one thing I dislike with your patch is that it is
>>> unconditional and global to all symbols, and you have no way to forbid
>>> the environment to override a value.
>>>
>>
>> Why????
>>
> Because kconfig might not be ran exclusively from a fully controlled
> and restricted environment ? Not to mention that it is used by other
> people than the linux kernel folks.
Well, it has always been possible to trick kbuild (not kconfig) into
accepting CONFIG_* options from environment, because unset kconfig
options in auto.conf are not seen by make. Of course this is completely
fragile, because there is no dependency checking and such variables are
only seen by make and do not appear in autoconf.h. So a patch that
teaches kconfig to read options from the environment would actually make
some (albeit currently "illegal") use cases work correctly :).
Michal
next prev parent reply other threads:[~2011-08-09 14:14 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1312067499.22074.59.camel@i7.infradead.org>
2011-07-30 23:13 ` [PATCH 1/2] kconfig: Factor out conf_validate_choice_val() function from conf_read_simple() David Woodhouse
2011-07-31 2:17 ` Arnaud Lacombe
2011-07-31 22:21 ` David Woodhouse
2011-07-30 23:14 ` [PATCH 2/2] Enable 'make CONFIG_FOO=y oldconfig' David Woodhouse
2011-07-30 23:44 ` Arnaud Lacombe
2011-07-30 23:53 ` H. Peter Anvin
2011-07-31 0:05 ` Arnaud Lacombe
2011-07-31 0:29 ` H. Peter Anvin
2011-07-31 1:06 ` Arnaud Lacombe
2011-07-31 1:28 ` H. Peter Anvin
2011-07-31 2:09 ` Arnaud Lacombe
2011-07-31 5:21 ` Arnaud Lacombe
2011-07-31 22:18 ` David Woodhouse
2011-08-09 15:22 ` Arnaud Lacombe
2011-07-31 7:33 ` David Woodhouse
2011-07-31 16:37 ` Randy Dunlap
2011-07-31 16:57 ` David Woodhouse
2011-07-31 17:08 ` Randy Dunlap
2011-07-31 17:40 ` David Woodhouse
2011-08-09 14:14 ` Michal Marek [this message]
2011-08-09 15:26 ` Arnaud Lacombe
2011-08-10 12:59 ` Michal Marek
2011-08-10 13:07 ` David Woodhouse
2011-08-10 14:15 ` Arnaud Lacombe
2011-08-10 14:17 ` David Woodhouse
2011-08-10 14:34 ` Arnaud Lacombe
2011-08-10 16:33 ` David Woodhouse
2011-08-10 17:00 ` Emmanuel Deloget
2011-08-10 17:52 ` H. Peter Anvin
2011-08-10 17:44 ` Arnaud Lacombe
2011-08-10 17:54 ` H. Peter Anvin
2011-08-10 17:59 ` David Woodhouse
2011-08-10 18:40 ` Arnaud Lacombe
2011-08-10 18:52 ` David Woodhouse
2011-08-10 22:33 ` Arnaud Lacombe
2011-08-10 23:16 ` David Woodhouse
2011-08-11 3:29 ` Arnaud Lacombe
2011-08-11 8:42 ` David Woodhouse
2011-08-11 8:58 ` Michal Marek
2011-08-11 11:10 ` David Woodhouse
2011-08-11 11:15 ` Andreas Schwab
2011-08-11 11:40 ` David Woodhouse
2011-08-11 11:56 ` Michal Marek
2011-08-11 13:20 ` David Woodhouse
2011-08-11 14:57 ` Arnaud Lacombe
2011-08-11 15:07 ` David Woodhouse
2011-08-11 15:24 ` Michal Marek
2011-08-11 15:50 ` David Woodhouse
2011-08-10 17:01 ` Randy Dunlap
2011-08-10 17:25 ` David Woodhouse
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