[U-Boot] [PATCH v5] SPL: Makefile: Build a separate autoconf.mk for SPL

[Tom Rini]

On Mon, Aug 19, 2013 at 02:47:53PM -0500, Scott Wood wrote:
> On Mon, 2013-08-19 at 16:14 +0800, ying.zhang at freescale.com wrote:
> > From: Ying Zhang <b40530 at freescale.com>
> 
> No.  You added one line AFAICT.  Preserve the original author here.

Indeed.

> > 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: Joel A Fernandes <joelagnel at ti.com>
> > Signed-off-by: Ying Zhang <b40530 at freescale.com>
> > ---
> > Change from v4:
> > - No change.
> > Change from v3:
> > - No change.
> 
> Surely there was *some* change or you wouldn't have reposted...

v4 was adding Joel's S-o-b line back to the changelog.

-- 
Tom
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