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SubjectRe: How can I link the kernel with libgcc ?
Carlos Munoz wrote:

> Lee Revell wrote:
>> On Thu, 2006-03-09 at 20:45 -0500, wrote:
>>> On Thu, 09 Mar 2006 17:44:16 PST, Carlos Munoz said:
>>>> I'm writing an audio driver and the hardware requires floating
>>>> point arithmetic. When I build the kernel I get the following
>>>> errors at link time:
>>> Tough break, that. You sure you can't figure a way to either push the
>>> floating point out to userspace
>> Audio drivers should never have to directly manipulate the samples -
>> they just manage the DMA buffers and interrupts and wake up the process
>> at the right time. Mixing, routing, volume control, DSP go in
>> userspace.
>> Lee
> Hi Lee,
> Unfortunately, the driver needs to populate several coefficient tables
> for the hardware to perform silence suppression and other advance
> features. The values for these tables are calculated using log10
> operations. I don't see a clean way to push these operations to user
> space without the need for custom applications that build the tables
> and pass them to the driver.
> Thanks,
> Carlos Munoz

I figured out how to get the driver to use floating point operations. I
included source code (from an open source math library) for the log10
function in the driver. Then I added the following lines to the file


Everything works now.


Carlos Munoz
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