linux-kernel - Re: [PATCH 02/34] kbuild: Introduce KCONFIG

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Date:	Wed, 14 May 2014 12:17:03 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Alexis Berlemont <alexis.berlemont@...il.com>,
	linux-kernel@...r.kernel.org
CC:	Jiri Olsa <jolsa@...hat.com>, acme@...stprotocols.net,
	dsahern@...il.com, mingo@...nel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Borislav Petkov <bp@...en8.de>, linux-kbuild@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 02/34] kbuild: Introduce KCONFIG_AUTOCONFIGDEP variable
 for conf tool

On 2014-05-14 00:02, Alexis Berlemont wrote:
> From: Jiri Olsa <jolsa@...hat.com>
> 
> Introducing KCONFIG_AUTOCONFIGDEP variable for conf tool
> allowing to specify custom auto.conf.cmd file.
> 
> Signed-off-by: Jiri Olsa <jolsa@...hat.com>
> Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Michal Marek <mmarek@...e.cz>
> Cc: linux-kbuild@...r.kernel.org
> Cc: Stephane Eranian <eranian@...gle.com>
> ---
>  scripts/kconfig/confdata.c | 11 ++++++++++-
>  scripts/kconfig/lkc.h      |  1 +
>  2 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
> index f88d90f..7afb2a7 100644
> --- a/scripts/kconfig/confdata.c
> +++ b/scripts/kconfig/confdata.c
> @@ -75,6 +75,14 @@ const char *conf_get_autoconfig_name(void)
>  	return name ? name : "include/config/auto.conf";
>  }
>  
> +const char *conf_get_autoconfigdep_name(void)
> +{
> +	char *name = getenv("KCONFIG_AUTOCONFIGDEP");
> +
> +	return name ? name : "include/config/auto.conf.cmd";
> +}

In both the kernel and perf usage case, the name of the dep file will be
$KCONFIG_AUTOCONFIG.dep. buildroot does not seem to use it at all. So
I'd just append the .cmd suffix here instead of introducing another knob.

Michal
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