[U-Boot] [RFC PATCH 2/2] Makefile: Give a build error if ad-hoc CONFIG options are added

[Simon Glass]

Hi Stephen,

On 24 August 2016 at 10:24, Stephen Warren <swarren at wwwdotorg.org> wrote:
> On 08/24/2016 08:44 AM, Simon Glass wrote:
>>
>> New CONFIG options should be added via Kconfig. To help prevent new ad-hoc
>> CONFIGs from being added, give a build error when these are detected.
>
>
> Acked-by: Stephen Warren <swarren at nvidia.com>
> Tested-by: Stephen Warren <swarren at nvidia.com>
>
> I worried about the increased build time due to find/grep on all Kconfig
> files, but at least with a hot disk cache it seems to make no noticeable
> difference:-)
>
> FWIW, CONFIG_SPL_GPIO_SUPPORT is missing in the whitelist, which affects the
> Jetson TK1 build (and likely all/most other Tegra boards).
>
> Ah, that's why "CONFIG_" is in the current whitelist; there are Makefiles
> that reference CONFIG_$(SPL)_SOMETHING. Handling that automatically might be
> a little involved for a one-off thing; I guess you'd need to manually fix up
> the whitelist for this?

I'm not sure yet. There are a large number of failures so for the real
patch I'll have to figure out something. I was hoping that a bit more
sed stuff will solve it, but we'll see.

Regards,
Simon