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

[York Sun <yorksun@freescale.com>]

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.

York