linux-kernel - Re: [PATCH RFC] kconfig.h fix extraneous dependencies

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Date:	Sun, 31 Jul 2011 20:53:06 -0400
From:	Arnaud Lacombe <lacombar@...il.com>
To:	Peter Foley <pefoley2@...izon.net>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Kbuild Mailing List <linux-kbuild@...r.kernel.org>,
	mmarek@...e.cz, rdunlap@...otime.net
Subject: Re: [PATCH RFC] kconfig.h fix extraneous dependencies

Hi,

On Sun, Jul 31, 2011 at 8:36 PM, Peter Foley <pefoley2@...izon.net> wrote:
> The introduction of kconfig.h caused fixdep to create three extraneous
> dependencies.
> include/config/.h
> include/config/h.h
> include/config/foo.h
>
> Remove them by eliminating instances of CONFIG_
>
this seems ugly to me... I would rather try to fix fixdep, no ?

 - Arnaud

> Signed-off-by: Peter Foley <pefoley2@...izon.net>
> ---
>
> Suggestions for a better replacement for CONFIG_FOO would be appreciated.
>
> diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h
> index 067eda0..66a0659 100644
> --- a/include/linux/kconfig.h
> +++ b/include/linux/kconfig.h
> @@ -1,15 +1,15 @@
> -#ifndef __LINUX_KCONFIG_H
> -#define __LINUX_KCONFIG_H
> +#ifndef __LINUX_KCONFIG
> +#define __LINUX_KCONFIG
>
>  #include <generated/autoconf.h>
>
>  /*
> - * Helper macros to use CONFIG_ options in C expressions. Note that
> + * Helper macros to use CONFIG options in C expressions. Note that
>  * these only work with boolean and tristate options.
>  */
>
>  /*
> - * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
> + * IS_ENABLED(CONFIG _FOO) evaluates to 1 if CONFIG _FOO is set to 'y' or 'm',
>  * 0 otherwise.
>  *
>  */
> @@ -17,16 +17,16 @@
>        (__enabled_ ## option || __enabled_ ## option ## _MODULE)
>
>  /*
> - * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0
> + * IS_BUILTIN(CONFIG _FOO) evaluates to 1 if CONFIG _FOO is set to 'y', 0
>  * otherwise. For boolean options, this is equivalent to
> - * IS_ENABLED(CONFIG_FOO).
> + * IS_ENABLED(CONFIG _FOO).
>  */
>  #define IS_BUILTIN(option) __enabled_ ## option
>
>  /*
> - * IS_MODULE(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'm', 0
> + * IS_MODULE(CONFIG _FOO) evaluates to 1 if CONFIG _FOO is set to 'm', 0
>  * otherwise.
>  */
>  #define IS_MODULE(option) __enabled_ ## option ## _MODULE
>
> -#endif /* __LINUX_KCONFIG_H */
> +#endif /* __LINUX_KCONFIG */
>
--
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