Re: [PATCH] ARM: shmobile: compile drivers/sh for CONFIG_ARCH_SHMOBILE_MULTI
From: Geert Uytterhoeven
Date: Mon Jan 13 2014 - 04:47:17 EST
Hi Ben,
On Mon, Jan 13, 2014 at 10:35 AM, Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx> wrote:
> On 13/01/14 09:28, Geert Uytterhoeven wrote:
>> On Fri, Jan 10, 2014 at 4:18 PM, Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx>
>> wrote:
>>>
>>> --- a/drivers/sh/Makefile
>>> +++ b/drivers/sh/Makefile
>>> @@ -3,7 +3,10 @@
>>> #
>>> obj-y := intc/
>>>
>>> +ifeq ($(CONFIG_COMMON_CLK),n)
>>> obj-$(CONFIG_HAVE_CLK) += clk/
>>> +endif
>>> +
>>
>>
>> This part breaks my Koelsch legacy (non-reference) build:
>>
>> arch/arm/kernel/built-in.o: In function `twd_local_timer_common_register':
>> io.c:(.init.text+0x1804): undefined reference to `clk_enable'
>> io.c:(.init.text+0x1828): undefined reference to `clk_get_rate'
>
> ...
>
>>
>> Both of my Koelsch legacy and reference configs have CONFIG_HAVE_CLK=y,
>> but only the reference once has CONFIG_COMMON_CLK=y.
>
> Hmm, thought undefined symbols got set to 'n'.
No, they're empty.
Doh, should have realized that myself...
> I can either fix this by
>
> ifneq ($(CONFIG_COMMON_CLK),y)
> endif
That's the typical pattern for this.
Sometimes people use
obj-$(CONFIG_COMMON_CLK)$(CONFIG_HAVE_CLK) += clk/
but that's less readable.
> or adding an extra Kconfig for SH specific legacy clock code.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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