[yocto] Custom recipe kernel 2.6.32 and depmodwrapper

[Bruce Ashfield]

On 13-06-14 04:09 PM, Javi Roman wrote:
> After hit my head against the wall over and over .... I realize the
> modules.dep file and so on is not deployed in the modules-xxx.tar.gz
> file at all. Only is deployed in the final rootfs image.

Aha. That was going to be my next area to ask about.

>
> I would swear this files were deployed in OE in the past.
>
> I apologize for the noise in the list!

I'm glad it has worked out!

Bruce

> Javi Roman
>
>
> On Fri, Jun 14, 2013 at 10:21 AM, Javi Roman <javiroman at kernel-labs.org> wrote:
>> Problably the issue about modules.builtin was a nosense, becasuse
>> patching the kernel Makefile in order to include this file dosen't fix
>> the problem.
>>
>> That said, I am unable to make work properly the /lib/modules folder.
>> The problem is the "make modules_install" is not putting all the files
>> in the target folder (I mean the modules.dep files an so on). This is
>> the log output when the task do_install of the kernel.bbclass:
>>
>> [...]
>>
>>    DEPMOD  2.6.32-abacus
>>
>> + bbnote 'JAVI -> ls INSTALL_MOD_PATH'
>> + echo 'NOTE: JAVI -> ls INSTALL_MOD_PATH'
>> NOTE: JAVI -> ls INSTALL_MOD_PATH
>> + ls -l /home/jroman/poky.git/build/tmp/work/romley-poky-linux/linux-yocto-abacus/2.6.32+gitAUTOINC+459b3d520991ec1b8e5ba68fbc4b206d602fee6e-r1/image/lib/modules/2.6.32-abacus/
>>
>> total 40
>> lrwxrwxrwx 1 root root   163 Jun 14 10:08 build ->
>> /home/jroman/poky.git/build/tmp/work/romley-poky-linux/linux-yocto-abacus/2.6.32+gitAUTOINC+459b3d520991ec1b8e5ba68fbc4b206d602fee6e-r1/linux-romley-standard-build
>> drwxr-xr-x 9 root root  4096 Jun 14 10:08 kernel
>> -rw-r--r-- 1 root root  6380 Jun 14 10:08 modules.builtin
>> -rw-r--r-- 1 root root 16509 Jun 14 10:08 modules.order
>> lrwxrwxrwx 1 root root   141 Jun 14 10:08 source ->
>> /home/jroman/poky.git/build/tmp/work/romley-poky-linux/linux-yocto-abacus/2.6.32+gitAUTOINC+459b3d520991ec1b8e5ba68fbc4b206d602fee6e-r1/linux
>>
>> [...]
>>
>> The make modules_install uses the target folder INSTALL_MOD_PATH in
>> order to install the modules, however you can see only the files
>> "modules.builtin" and "modules.order" are properly installed. The
>> "make modules_install" work fine if I run this command from a
>> "devshell", however from the "bitbake virtual/kernel -c install" is
>> not properly working.
>>
>> Can anybody give me a hint?
>>
>> Many thanks.
>> Javi Roman
>>
>>
>> On Thu, Jun 13, 2013 at 3:03 PM, Javi Roman <javiroman at kernel-labs.org> wrote:
>>> Hi!
>>>
>>> I've found a possible issue with the depmodwrapper (in image.bbclass
>>> -> do_rootfs) and the old kernel tree 2.6.32.
>>>
>>> The final rootfs image is not properly populated with the necessary
>>> kernel module files for the module-init-tools utility:
>>>
>>> /lib/modules/<kernel-version/
>>> modules.alias
>>> modules.alias.bin
>>> modules.builtin
>>> modules.builtin.bin
>>> modules.dep
>>> modules.dep.bin
>>> modules.devname
>>> modules.order
>>> modules.softdep
>>> modules.symbols
>>> modules.symbols.bin
>>>
>>> This tool depmodwrapper is using the kernel Makefile generated file
>>> "modules.builtin", this file is not generated by the kbuild kernel
>>> system in the 2.6.32 kernel. This feature was included in the 2.6.33
>>> branch [1].
>>>
>>> So the image.bbclass is broken for kernel trees below 2.6.33 version.
>>> However the bitbake.conf shows the variable OLDEST_KERNEL = "2.6.16".
>>>
>>> Many thanks!
>>>
>>> [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bc081dd6e9f622c73334dc465359168543ccaabf
>>>
>>> Javi Roman
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