Re: cron job: media_tree daily build: ERRORS: help needed

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Hi Hans,

On Tue, Jun 19, 2012 at 3:34 AM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote:
> Hi all,
>
> Yesterday I upgraded the gcc version I use to compile the daily build to
> 4.7.1.
>
> This causes very strange errors when compiling 2.6.39 - 3.3:
>
> FATAL: media_build/v4l/tuner: sizeof(struct i2c_device_id)=32 is not a
> modulo of the size of section __mod_i2c_device_table=18.
> Fix definition of struct i2c_device_id in mod_devicetable.h
>
> This error does not appear when compiling with gcc 4.6.3, and I see
> absolutely nothing
> wrong with mod_devicetable.h.
>
> I tried very hard to figure out what is going on and why older and newer
> kernels
> are not affected, but I still have no idea.
>
> The error itself it reported by scripts/mod/file2alias.c. I can suppress
> that error
> but that will just lead to a modpost crash later in the compile process.
>
> The tuner.o file always causes this. Commenting tuner.o in the Makefile will
> cause
> the same problems in other modules (cafe_ccic), but there are also i2c
> modules that
> compile just fine.
>
> Does anyone have an insight into this? Did something magical change in
> kernel 3.4
> that fixed this?
>

Perhaps this thread could be useful:

https://lkml.org/lkml/2012/6/15/323

Hope it helps,
Ezequiel.
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