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kconfig: Add tools support to CONFIG_IS_ENABLED()

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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.

With this and the tools_build() function, we should be able to remove all
the #ifdefs currently needed in code that is build by tools and targets.

This will be even nicer when we move to using CONFIG(xxx) everywhere,
since all the #ifdef and IS_ENABLED/CONFIG_IS_ENABLED stuff will go away.

Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> # b4f73886
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Simon Glass 2021-09-25 19:43:15 -06:00 • committed by Tom Rini
parent c9d6b5b5dc
commit 5500a408dd
1 changed files with 10 additions and 3 deletions
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13
include/linux/kconfig.h
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@ -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_TOOLS_), depending on the build
* context.
*/
#if defined(CONFIG_TPL_BUILD)
#ifdef USE_HOSTCC
#define _CONFIG_PREFIX TOOLS_
#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_TOOLS_FOO if USE_HOSTCC is defined,
* CONFIG_FOO if CONFIG_SPL_BUILD is undefined,
* CONFIG_SPL_FOO if CONFIG_SPL_BUILD is defined.
* CONFIG_TPL_FOO if CONFIG_TPL_BUILD is defined.
@ -76,18 +80,21 @@
/*
* CONFIG_IS_ENABLED(FOO) expands to
* 1 if USE_HOSTCC is defined and CONFIG_TOOLS_FOO is set to 'y',
* 1 if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y',
* 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y',
* 1 if CONFIG_TPL_BUILD is defined and CONFIG_TPL_FOO is set to 'y',
* 0 otherwise.
*
* CONFIG_IS_ENABLED(FOO, (abc)) expands to
* abc if USE_HOSTCC is defined and CONFIG_TOOLS_FOO is set to 'y',
* abc if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y',
* abc if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y',
* abc if CONFIG_TPL_BUILD is defined and CONFIG_TPL_FOO is set to 'y',
* nothing otherwise.
*
* CONFIG_IS_ENABLED(FOO, (abc), (def)) expands to
* abc if USE_HOSTCC is defined and CONFIG_TOOLS_FOO is set to 'y',
* abc if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y',
* abc if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y',
* abc if CONFIG_TPL_BUILD is defined and CONFIG_TPL_FOO is set to 'y',