[alsa-devel] Developing and cross-compiling an ASoC driver

[Szabolcs Erki]

Ok, so ASoC is totally platform-independent, there is no patch to be
applied against ASoC in order to make it feasible for the target. Is
it correct? In this case I have to compile it in the kernel, using the
gcc-arm-elf cross compiler. How to do that? Hard copy the files and
hacking makefiles together?
Because the descriptions I found applied to installing ASoC on a desktop environment, like
Ubuntu.

Thanks again.
Szabolcs

Thursday, October 22, 2009, 4:21:48 PM, you wrote:

> On Thu, Oct 22, 2009 at 04:08:18PM +0200, Szabolcs Erki wrote:

>> I didn't find any suitable description how to do a cross-platform driver development process.
>> Could you please give me some introduction how to:

>> - cross compile alsa-driver (AFAIK ASoC is part of it, and ALSA is
>> part of the linux kernel), and alsa-utils (for getting arecord)
>> - cross compile the newly developed alsa driver
>> - integrate ASoC and the custom driver to the patched kernel
>> (Linux4SAM) and cross compile them to one image.

> There is nothing particularly special about building when you're
> developing a new driver - the kernel is built in exactly the same way.
> There's certainly nothing ASoC specific here.  You'll probably get more
> useful advice by asking people who normally use the same distribution
> that you do how they develop.

> Many people build a system as they normally would with the distribution
> they usually use (eg, OpenEmbedded) and then use the toolchain that has
> to compile a kernel by hand from a regular git checkout, copying the
> resulting kernel into whatever images they normally use.
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Szabolcs Erki
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