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Date: Wed, 29 Jan 2014 14:58:11 +0100
From: Sagar Behere <sagar.behere@gmail.com>
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 <52E8CF13.4070904@xenomai.org> <201401291346.49045.paul_c@tuxcnc.org>
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Subject: Re: [Xenomai] Cross-compile vanilla kernel to armhf fails
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On 01/29/2014 02:46 PM, Paul wrote:
> On Wednesday 29 January 2014, Gilles Chanteperdrix wrote:
>> On 01/29/2014 10:28 AM, Huub Van Niekerk wrote:
>>> Hi,
>>>
>>> I'm trying to cross-compile xenomai-2.6.3 patched vanilla linux
>>> kernel 3.5.7 to armhf using this command:
>>>
>>> /Downloads/linux-3.5.7$ CONCURRENCY_LEVEL=2 CLEAN_SOURCE=no
>>> DEB_HOST_ARCH=armhf fakeroot make-kpkg --arch arm --cross-compile
>>> /usr/bin/arm-linux-gnueabihf- --initrd --append-to-version
>>> -xenomai-2.6.3 --revision 1.0 kernel_image kernel_headers
>>>
>>>
>>> and get this error:
>>>
>>>     CC      drivers/xenomai/testing/timerbench.o
>>>     LD      drivers/xenomai/testing/xeno_timerbench.o
>>>     LD      drivers/xenomai/testing/xeno_switchtest.o
>>>     LD      drivers/xenomai/testing/built-in.o
>>>     LD      drivers/xenomai/built-in.o
>>>     LD      drivers/built-in.o
>>> make[1]: Leaving directory `/home/huub/Downloads/linux-3.5.7'
>>> make: *** [debian/stamp/build/kernel] Error 2
>>>
>>>
>>> I've tried to find a possible cause but found nothing. Can anyone
>>> please direct me into a possible solution ?
>>
>> You are lacking the line with the actual error. The full log should
>> contain it. Otherwise you can try without CONCURRENCY_LEVEL, in which
>> case make should stop immediately after the error.
>
> You may also need:
> 	--subarch armhf
> as an option passed to make-kpkg...
>
> But the first question should be, can you cross compile a kernel for the
> target using the standard kernel make ?
>
> If you can't, then using make-kpkg will fail also.

+1. You can use the instructions here

http://wiki.gumstix.org/index.php?title=Installing_Debian_and_Xenomai_on_gumstix_Overo

for attempting a basic kernel cross-compile. Just be sure to replace the 
`gnueabi` in those instructions with `gnueabihf` if you are using armhf

/Sagar