[yocto] Missing Python modules on target

[Jonatan Magnusson]

(I replied to Chris personal email by mistake. Our conversation is pasted
below.)

I tried to investigate how the Python installer works, and there are still
many parts I am not sure about.
But as far as I understand the manifest file (python-2.7-manifest.inc) *is*
responsible for telling bitbake which Python modules to install. It
contains a bunch of FILES_${PN}-<package> definitions like this:

FILES_${PN}-numbers="${libdir}/python2.7/decimal.*
${libdir}/python2.7/numbers.* "

If I add "${libdir}/python2.7/wsgiref" to one of these and rebuild the
image the module gets installed on the image.  This solves my problem, but
I wonder why it is not included by default?

Anyone who can shed som light on this?

Regards,
Jonatan Magnusson


2014-03-19 17:12 GMT+01:00 Chris Larson <clarson at kergoth.com>:

>
> On Wed, Mar 19, 2014 at 9:09 AM, Jonatan Magnusson <
> jonatan.magnusson at gmail.com> wrote:
>
>>
>> As far as I can see the manifest file is generated from
>> "scripts/contrib/python/generate-manifest-2.7.py" and "wsgiref" is not
>> mentioned in that file either.
>>
>> There is nothing really to build in wsgiref. It's just a directory of .py
>> files that should be copied to the image. And those files are also present
>> in
>>
>> "build/tmp-eglibc/work/i586-oe-linux/python/2.7.3-r0.3/image/usr/lib/python2.7".
>>
>
> If the wsgiref modules got installed by the python buildsystem in
> do_install, but the manifest didn't include it,l then we'd get warnings
> about unpackaged files. As we do not, it's not being installed for some
> reason, which leads me to believe that the upstream python buildsystem
> isn't installing it, as it's not enabled, but I'm not an expert on the
> python buildsystem. That's where I'd suggest looking. Check the python
> recipe's do_install, and then examine the python buildsystem to see how to
> verify that wsgiref is enabled for inclusion.
>
>
> Also, the manifest generation script above links to this page:
>>
>> http://www.vanille-media.de/site/index.php/projects/python-for-arm-linux/
>>
>> ... which links to ...
>>
>> http://cgit.openembedded.org/cgit.cgi/openembedded/tree/recipes/python
>>
>> ... which has a "python-wsgiref_0.1.2.bb" file that is not included in
>> Yocto it seems. I'm just getting started with Yocto, so I may get something
>> wrong, but it
>> seems that perhaps some more python .bb-files should be transferred to
>> Yocto?
>
>
>
> It seems like that recipe is for a standalone pypi wsgiref, but it's
> included in python for 2.5+, I expect that recipe is a remnant of pre-2.5
> python builds.
> --
> Christopher Larson
> clarson at kergoth dot com
> Founder - BitBake, OpenEmbedded, OpenZaurus
> Maintainer - Tslib
> Senior Software Engineer, Mentor Graphics
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20140319/f4f3a867/attachment.html>