Re: [Xenomai] Kernel compilation error due to Adeos patch error in 'io_apic.c'

[Jeff Webb <jeff.webb@nta-inc.net>]

On 12/27/2012 03:42 PM, Gilles Chanteperdrix wrote:
> On 12/27/2012 10:38 PM, Wim Meeussen wrote:
>
>>>> I can confirm that this problem still exists with yesterday's
>>>> stable Xenomai release 2.6.2, ipipe-core-3.2.21-x86-2.patch, a vanilla 3.2.21
>>>> kernel, ang gcc 4.6.3 on Ubuntu 12.04.
>>
>>> Ok, do you have the issue with I-pipe core 3.4 and 3.5 ?
>>
>>
>> With Xenomai 2.6.2, ipipe-core-3.5.3-x86-2.patch, linux 3.5.3 and gcc
>> 4.6.3, I have a different problem, which I haven't been able to solve
>> yet (that's why I started using the older 3.2.21 kernel, and ran into
>> the problem described above).
>>
>> Running "make CONFIG_DEBUG_SECTION_MISMATCH=y -j4" on the 3.5.3 kernel
>> sources gives me the result below.  The
>> "CONFIG_DEBUG_SECTION_MISMATCH" parameter was suggested by the
>> previous build that failed, to get more information on the failure.
>>
>>
>> WARNING: drivers/scsi/fcoe/libfcoe.o(.init.text+0x1e): Section
>> mismatch in reference from the function init_module() to the function
>> .exit.text:fcoe_transport_exit()
>> The function __init init_module() references
>> a function __exit fcoe_transport_exit().
>> This is often seen when error handling in the init function
>> uses functionality in the exit path.
>> The fix is often to remove the __exit annotation of
>> fcoe_transport_exit() so it may be used outside an exit section.
>>
>
>
> Are you sure this error is related to xenomai?
>

For what it's worth, I would guess no.  I had similar problems when compiling a 3.4 series kernel under Ubuntu 12.04.  I solved the problem by disabling the modules that CONFIG_DEBUG_SECTION_MISMATCH was complaining about.  This all had nothing to do with Xenomai.

-Jeff