linux-kernel - Re: 2.6.32-rc3: floating-point build failure (undefined reference to `_

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Message-ID: <20091009170803.GE11702@bombadil.infradead.org>
Date:	Fri, 9 Oct 2009 13:08:04 -0400
From:	Kyle McMartin <kyle@...artin.ca>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	Andreas Mohr <andi@...as.de>, Kyle McMartin <kyle@...artin.ca>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: 2.6.32-rc3: floating-point build failure (undefined reference
	to `__udivdi3' in menu governor)

On Fri, Oct 09, 2009 at 09:32:13AM -0700, Arjan van de Ven wrote:
>> Hmpf. Rather stuck now, ain'tcha, given that gcc 3.2.3 doesn't even have those?
>>
>
> wonder if making a new define with the value of RESOLUTION * DECAY
> (the actual value obviously) convinces your gcc that it really is a power of two ?
>

It shouldn't. Maybe just add a BUILD_BUG_ON and change the divide to a
shift directly. How expected are these values to ever change, really?

-Kyle
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