From: Michal Marek <mmarek@suse.cz>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Andreas Schwab <schwab@redhat.com>,
Arnaud Lacombe <lacombar@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org
Subject: Re: [PATCH 2/2] Enable 'make CONFIG_FOO=y oldconfig'
Date: Thu, 11 Aug 2011 13:56:19 +0200 [thread overview]
Message-ID: <4E43C363.3000103@suse.cz> (raw)
In-Reply-To: <1313062813.18037.24.camel@i7.infradead.org>
On 11.8.2011 13:40, David Woodhouse wrote:
> On Thu, 2011-08-11 at 13:15 +0200, Andreas Schwab wrote:
>>> That would be cute, but I'm not sure how to undefine something set on
>>> the command line:
>>>
>>> $ cat > Makefile <<EOF
>>> undefine BAR
>>
>> override undefine BAR
>
> Thanks. So we don't really need to change the auto.conf syntax; we could
> just do:
>
> $(foreach var, $(filter CONFIG_%,$(.VARIABLES)), $(eval override undefine $(var)))
>
> But still I suspect we might *not* want that for options set on the
> command line. We *don't* want 'make CONFIG_FOO=y oldconfig bzImage' to
> say 'you can't enable CONFIG_FOO' and then build the bzImage anyway.
If you do
$ echo 'CONFIG_FOO=y' >all.config
$ make allnoconfig bzImage
then it will also build bzImage even if kconfig wasn't able to set
CONFIG_FOO=y. IMO printing a warning that CONFIG_FOO could not be set is
sufficient, as long as CONFIG_FOO is consistently unset.
Michal
next prev parent reply other threads:[~2011-08-11 11:56 UTC|newest]
Thread overview: 52+ 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 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
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 [this message]
2011-08-11 13:20 ` David Woodhouse
2011-08-11 14:57 ` Arnaud Lacombe
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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