linux-kernel - Re: [PATCH] kconfig/menuconfig: use TAILQ instead of CIRCLEQ

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Date:	Fri, 19 Oct 2012 16:54:19 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	yann.morin.1998@...e.fr, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, bpoirier@...e.de,
	yselkowitz@...il.com
Subject: Re: [PATCH] kconfig/menuconfig: use TAILQ instead of CIRCLEQ

On 19.10.2012 14:10, Tetsuo Handa wrote:
> Yann E. MORIN wrote:
>> So, switch to using TAILQ instead, which are more portable.
[...]
> Excuse me, but your patch does not solve my problem because kconfig started
> using macros which does not exist in "@(#)queue.h 8.3 (Berkeley) 12/13/93".
> Kconfig still fails after applying your patch:
> 
>   HOSTCC  scripts/kconfig/mconf.o
> scripts/kconfig/mconf.c: In function `update_text':
> scripts/kconfig/mconf.c:326: warning: implicit declaration of function `TAILQ_FOREACH'
[...]
> scripts/kconfig/mconf.c:378: warning: implicit declaration of function `TAILQ_HEAD_INITIALIZER'
> 
> So, would you add something which looks like "sed -e 's/CIRCLEQ/TAILQ/g'" upon
> https://lkml.org/lkml/2012/10/16/274 ?

Could you reduce that patch to not copy all of queue.h?
TAILQ_HEAD_INITIALIZER can be replaced by a TAILQ_INIT() call after
variable definitions, and we do not need stuff like
TAILQ_FOREACH_REVERSE. The other option is to reimplement the needed
operations under a different name, so that people don't accidentally use
other macros that are missing in old queue.h revisions.

Michal
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