Re: kbuild: shorthand ym2y, ym2m etc
From: Russell King (rmk+lkml_at_arm.linux.org.uk)
Date: 01/30/05
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Date: Sun, 30 Jan 2005 22:44:52 +0000 To: Christoph Hellwig <hch@infradead.org>, linux-kernel@vger.kernel.org
On Sun, Jan 30, 2005 at 11:39:26PM +0100, Sam Ravnborg wrote:
> On Sun, Jan 30, 2005 at 07:52:30PM +0000, Christoph Hellwig wrote:
> >
> > obj-$(CONFIG_FB)$(CONFIG_PPC) += macmodes.o
> >
> > would be a lot more obvious, but I'm not sure how to handle
> > it for the case where one of them evaluates to m
>
> The real problem is when say CONFIG_FB are empty. Then kbuild will see:
> obj-$(CONFIG_PPC) which I doubt was what you wanted.
>
> This can be fixed by changing Kconfig to evaluate all known symbols to
> either y,m,n - in contradiction to today where symbols that evaluate
> to n is left empty.
Isn't that rather hard to achieve, unless all Kconfig files (including
all architecture specific ones) are read? Eg, CONFIG_PPC wouldn't
exist on ARM.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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