On Mon, Sep 26, 2016 at 01:05:01PM +0900, Masahiro Yamada wrote:

> Our build system still parses ad-hoc CONFIG options in header files
> and generates include/autoconf.mk so that Makefiles can reference
> them.  This gimmick was introduced in the pre-Kconfig days and will
> be kept until Kconfig migration is completed.
> 
> The include/autoconf.mk is generated like follows:
> 
>   [1] Preprocess include/common.h with -DDO_DEPS_ONLY and
>       retrieve macros into include/autoconf.mk.tmp
>   [2] Reformat include/autoconf.mk.dep into include/autoconf.mk
>       with tools/scripts/define2mk.sed script
>   [3] Remove include/autoconf.mk.tmp
> 
> Here, include/autoconf.mk.tmp is similar to u-boot.cfg, which is
> also generated by preprocessing include/config.h with -DDO_DEPS_ONLY.
> In other words, there is much overlap among include/autoconf.mk and
> u-boot.cfg build rules.
> 
> So, the idea is to split the build rule of include/autoconf.mk
> into two stages.  The first preprocesses headers into u-boot.cfg.
> The second parses the u-boot.cfg into include/autoconf.mk.  The
> build rules of u-boot.cfg in Makefile and spl/Makefile will be gone.
> 
> Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
> Reviewed-by: Simon Glass <s...@chromium.org>

Applied to u-boot/master, thanks!

-- 
Tom

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