Re: Kconfig undefined references (on other platforms)

[tony@atomide.com]

* Tim Bird <tim.bird@am.sony.com> [070507 12:43]:
> Hi all,
> 
> I'm using patch-2.6.20-omap1, with a kernel that I compile
> for multiple boards. When I compile the kernel for a MIPS board,
> I get some Kconfig warnings on OMAP symbols.
> 
> >From the compile:
> scripts/kconfig/conf -s arch/mips/Kconfig
> sound/arm/Kconfig:42:warning: 'select' used by config symbol 'SND_OMAP_AIC23' refer to undefined symbol 'OMAP_MCBSP'
> sound/arm/Kconfig:57:warning: 'select' used by config symbol 'SND_OMAP_TSC2101' refer to undefined symbol 'OMAP_MCBSP'
> sound/arm/Kconfig:70:warning: 'select' used by config symbol 'SND_SX1' refer to undefined symbol 'OMAP_MCBSP'
> 
> It looks like sound/arm/Kconfig is included (unconditionally) in
> sound/Kconfig. OMAP_MCBSP is defined in arch/arm/plat-omap1/Kconfig,
> which is not included during my build on MIPS.
> 
> Does anyone know what the proper technique is for making either the
> selects or the includes conditional, or otherwise quieting these
> types of reference warnings?

Sounds like it would be best to have board-*.c functions take care
of of the mcbsp read/write for omap.

Tony