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

[Tom Rini <trini@ti.com>]

On Mon, Aug 19, 2013 at 02:20:25PM -0700, York Sun wrote:
> On 08/19/2013 12:54 PM, Tom Rini wrote:
> > 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@freescale.com>
> >>
> >> No.  You added one line AFAICT.  Preserve the original author here.
> > 
> > Indeed.
> > 
> 
> Do we need Ying to send a new version? We can reset the author to Joe
> when applying this patch.
> 
> >>> 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@ti.com>
> >>> Signed-off-by: Ying Zhang <b40530@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.
> > 
> 
> 
> I tried to run MAKEALL for arm and powerpc. Powerpc all passed but I am
> having errors for arm, before applying this patch. I am using Linaro's
> gcc 4.8.2 for arm. Should I use a different toolchain? I am not used to
> work on arm platforms.

That's expected as the Linaro toolchain isn't good for all ARMs.  I'll
pass this through some testing locally as well.

-- 
Tom
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