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

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Date:	Fri, 09 Oct 2009 10:12:15 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Kyle McMartin <kyle@...artin.ca>
CC:	Andreas Mohr <andi@...as.de>, 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)

Kyle McMartin wrote:
> 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?
> 

so far... they haven't. I don't really expect these to change much.
maybe once a year or so... to other powers of two

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