lkml.org 
[lkml]   [2011]   [Aug]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 2/2] Enable 'make CONFIG_FOO=y oldconfig'
From
Hi,

On Tue, Aug 9, 2011 at 10:14 AM, Michal Marek <mmarek@suse.cz> wrote:
> 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 :).
>
kconfig can already set symbol value from the environment. The only
limitation I can see is that it is not optional and require an
explicit environment variable name.

- Arnaud
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2011-08-09 17:29    [W:1.927 / U:0.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site