[yocto] OpenCV with python3

[Peter Balazovic]

By allowing "python3-opencv" I end up with errors ....

ERROR: fsl-image-qt5-1.0-r0 do_rootfs: python3-opencv not found in the
feeds .
ERROR: fsl-image-qt5-1.0-r0 do_rootfs: This is often caused by an empty
package declared in a recipe's PACKAGES variable. (Empty packages are not
constructed unless ALLOW_EMPTY_<pkg> = '1' is used.)
ERROR: fsl-image-qt5-1.0-r0 do_rootfs: Function failed: do_rootfs

where to look at on problem?


On Fri, Mar 16, 2018 at 8:09 AM, Peter Balazovic <balazovic.peter at gmail.com>
wrote:

> That I was thinking to have “python3-opencv” but it's failing to build
>
> I found opencv_3.1.bbappend with my sources where I see
>
> PACKAGECONFIG_remove_imx = "eigen python3"
>
> I guess that might causing a problem to build opencv for python3... I'll
> remove and check again to build.
>
> BTW what's the benefit of using CORE_IMAGE_EXTRA_INSTALL over
> IMAGE_INSTALL_append ?
>
>
> On Fri, Mar 16, 2018 at 6:29 AM, Tim Orling <ticotimo at gmail.com> wrote:
>
>> Ditto for Robert’s comment. Please look at the bitbake manual and
>> understand what the syntax means [1].
>>
>> Also,  “python-foo” means the python2 version. The default PACKAGECONFIG
>> [2] for opencv builds for python3. You need “python3-opencv”.
>>
>> Finally, I would encourage you to use CORE_IMAGE_EXTRA_INSTALL [3] rather
>> than IMAGE_INSTALL in the local.conf context.
>>
>> [1] https://www.yoctoproject.org/docs/current/bitbake-user-m
>> anual/bitbake-user-manual.html#appending-and-prepending
>> [2] http://cgit.openembedded.org/meta-openembedded/tree/meta
>> -oe/recipes-support/opencv/opencv_3.3.bb?h=master#n90
>> [3] https://www.yoctoproject.org/docs/current/ref-manual/ref
>> -manual.html#var-CORE_IMAGE_EXTRA_INSTALL
>>
>> On Thu, Mar 15, 2018 at 5:57 AM Robert P. J. Day <rpjday at crashcourse.ca>
>> wrote:
>>
>>> On Thu, 15 Mar 2018, Peter Balazovic wrote:
>>>
>>> > Hello all,
>>> > I have python module of OpenCV for python 2.7 on my Yocto image adding
>>> via local.conf
>>> >
>>> > IMAGE_INSTALL_append += “ python-opencv”
>>>
>>>   i know i've harped on this before, but can people please stop
>>> combining the constructs "_append" and "+=" in the same expression?
>>>
>>> rday--
>>> _______________________________________________
>>> yocto mailing list
>>> yocto at yoctoproject.org
>>> https://lists.yoctoproject.org/listinfo/yocto
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>>
>
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