From mboxrd@z Thu Jan  1 00:00:00 1970
From: York Sun <yorksun@freescale.com>
Date: Thu, 15 Aug 2013 10:27:07 -0700
Subject: [U-Boot] [PATCH v3] SPL: Makefile: Build a separate autoconf.mk
	for SPL
In-Reply-To: <1376460089-19562-1-git-send-email-ying.zhang@freescale.com>
References: <1376460089-19562-1-git-send-email-ying.zhang@freescale.com>
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On 08/13/2013 11:01 PM, ying.zhang at freescale.com wrote:
> From: Zhang Ying <rock.ap.freescale.net>
> 
> SPL defines CONFIG_SPL_BUILD but this does not percolate to the autoconf.mk Makefile.
> As a result the build breaks when CONFIG_SPL_BUILD is used in the board-specific include
> header file. With this, there is a possibility of having a CONFIG option defined in the
> header file but not defined in the Makefile causing all kinds of build failure and problems.
> 
> It also messes things for up, for example, when one might want to undefine options to
> keep the SPL small and doesn't want to be stuck with the CONFIG options used for U-boot.
> Lastly, this also avoids defining special CONFIG_SPL_ variables for cases where some
> options are required in U-boot but not in SPL.
> 
> We add a spl-autoconf.mk rule that is generated for SPL with the CONFIG_SPL_BUILD flag
> and conditionally include it for SPL builds.
> 
> Signed-off-by: Zhang Ying <rock.ap.freescale.net>
>

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York