[PATCH 16/49] kconfig: Add host support to CONFIG_IS_ENABLED()

[Rasmus Villemoes]

On 04/05/2021 01.11, Simon Glass wrote:
> At present we must separately test for the host build for many options,
> since we force them to be enabled. For example, CONFIG_FIT is always
> enabled in the host tools, even if CONFIG_FIT is not enabled by the
> board itself.
> 
> It would be more convenient if we could use, for example,
> CONFIG_IS_ENABLED(FIT) and get CONFIG_HOST_FIT, when building for the
> host. Add support for this.
> 

Suggested-by: Rasmus Villemoes <rasmus.villemoes at prevas.dk> # b4f73886
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> 
> (no changes since v1)
> 
>  include/linux/kconfig.h | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h
> index d109ed3119e..6216b58625f 100644
> --- a/include/linux/kconfig.h
> +++ b/include/linux/kconfig.h
> @@ -31,11 +31,14 @@
>  	(config_enabled(option))
>  
>  /*
> - * U-Boot add-on: Helper macros to reference to different macros
> - * (CONFIG_ or CONFIG_SPL_ prefixed), depending on the build context.
> + * U-Boot add-on: Helper macros to reference to different macros (prefixed by
> + * CONFIG_, CONFIG_SPL_, CONFIG_TPL or CONFIG_HOST), depending on the build
> + * context.

Please consistently have a trailing underscore on these prefixes.

>   */
>  
> -#if defined(CONFIG_TPL_BUILD)
> +#ifdef USE_HOSTCC
> +#define _CONFIG_PREFIX HOST_
> +#elif defined(CONFIG_TPL_BUILD)
>  #define _CONFIG_PREFIX TPL_
>  #elif defined(CONFIG_SPL_BUILD)
>  #define _CONFIG_PREFIX SPL_
> @@ -49,6 +52,7 @@
>  
>  /*
>   * CONFIG_VAL(FOO) evaluates to the value of
> + *  CONFIG_HOST_FOO if USE_HOSTCC is undefined,

s/undefined/defined/

Rasmus