[U-Boot] [PATCH v8 05/13] kconfig: switch to Kconfig

[Tom Rini]

On Wed, Jul 30, 2014 at 08:08:02PM -0600, Stephen Warren wrote:
> On 07/30/2014 07:56 PM, Masahiro Yamada wrote:
> > Hi Stephen,
> > 
> > 
> > On Wed, 30 Jul 2014 17:05:21 -0600
> > Stephen Warren <swarren at wwwdotorg.org> wrote:
> > 
> >> On 07/29/2014 11:08 PM, Masahiro Yamada wrote:
> >>> This commit enables Kconfig.
> >>> Going forward, we use Kconfig for the board configuration.
> >>> mkconfig will never be used. Nor will include/config.mk be generated.
> >>>
> >>> Kconfig must be adjusted for U-Boot because our situation is
> >>> a little more complicated than Linux Kernel.
> >>> We have to generate multiple boot images (Normal, SPL, TPL)
> >>> from one source tree.
> >>> Each image needs its own configuration input.
> >>>
> >>> Usage:
> >>>
> >>> Run "make <board>_defconfig" to do the board configuration.
> >>
> >> This is quite unfortunate; it breaks any scripts that were building U-Boot via "make <board>_config; make". Can't we add another rule to allow the old build commands to work?
> > 
> > 
> > Technically, yes. I think we can.
> > 
> > But I do not like having it permanently.
> > 
> > 
> > So, we support both *_defconfig and *_config for a while (maybe 6 months or so?)
> > and then remove *_config.
> > 
> > Deal?
> 
> If the old command-line is ever going to be removed, there's no point
> supporting both at all; I'd have to hack my scripts to support both
> sometime, so I may as well do it now rather than wait.
> 
> >> Otherwise, I guess I'll have to hack my scripts to check whether e.g. scripts/multiconfig.py (which was added in this commit) is present in the tree, and execute different build commands based on that...
> > 
> > 
> > Do you mean, you need to build some different versions of U-boot ?
> 
> Yes. I own some scripts that build U-Boot, and they need to work on any
> reasonable version of U-Boot that anyone might want to build. For
> example, they build 2014.07 just fine, and there's no reason they should
> ever stop being able to do that. I obviously also want my scripts to be
> able to build any future version of U-Boot.

So long as we have MAKEALL (and we'll have the discussion about moving
to buildman sometime soon) this just becomes:
if [ -x tools/genboardscfg.py ]; then
   tools/genboardscfg.py
fi

MAKEALL machine-name

-- 
Tom
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