Is Python Tkinter available for Yocto

Is Python Tkinter available for Yocto

[Jens Lucius]

Hi,

I am a little bit confused if Python Tkinter is included as a package 
for python in the Yocto system.

Pro:
- The output of "bitbake -e python | grep ^PACKAGES=" shows a package 
called "python-tkinter."
-  In 
"tmp/work/armv6-vfp-poky-linux-gnueabi/python/2.7.3-r0.3/packages-split" 
there is a folder called python-tkinter

Contra:
- There is a patch for python recipe called 
"avoid_warning_about_tkinter.patch" which states "_tkinter module needs 
tk module along with tcl. tk is not yet integrated in yocto so we skip 
the check for this module. Avoid a warning by not  adding this module to 
missing variable."
- I have included in my recipe: "python-core python-tkinter" which gave 
no error, but no tkinter installed and I have tried including 
"python-core python-modules" which gave me a lot of python modules, but 
still no tkinter. (tried "from Tkinter import *" which gave an error and 
no tkinter in /usr/lib/python2.7)

Do I manually need to install another package? Is it included or not? Do 
I need to do my own recipe?

Any help would be appreciated.

Thanks,

Jens

Re: Is Python Tkinter available for Yocto

[Jens Lucius]

> I am a little bit confused if Python Tkinter is included as a package 
> for python in the Yocto system.
>
> - There is a patch for python recipe called 
> "avoid_warning_about_tkinter.patch" which states "_tkinter module 
> needs tk module along with tcl. tk is not yet integrated in yocto so 
> we skip the check for this module. Avoid a warning by not adding this 
> module to missing variable."
> - I have included in my recipe: "python-core python-tkinter" which 
> gave no error, but no tkinter installed and I have tried including 
> "python-core python-modules" which gave me a lot of python modules, 
> but still no tkinter. (tried "from Tkinter import *" which gave an 
> error and no tkinter in /usr/lib/python2.7)
>
> Do I manually need to install another package? Is it included or not? 
> Do I need to do my own recipe?

To answer my own question:

Yes Tkinter is included in Python build but as the patch states it needs 
tcl as well as tk with tcl already included in Yocto and tk not.

Andrei Gherzan wrote a .bb for OE-Core for tk version 8.5.11 which did 
work for me after bumping it to the latest version 8.6.1.

If anybody needs it or wants to integrate it in Yocto here is the bb: 
(just remember to include tk and tcl in your build or add dependencies 
for them in python).

http://pastebin.com/tRGk0U0c

Jens

Re: Is Python Tkinter available for Yocto

[Gary Thomas]

On 2014-04-04 08:34, Jens Lucius wrote:
> 
>> I am a little bit confused if Python Tkinter is included as a package for python in the Yocto system.
>>
>> - There is a patch for python recipe called "avoid_warning_about_tkinter.patch" which states "_tkinter module needs tk module along with tcl. tk is not yet integrated in yocto so
>> we skip the check for this module. Avoid a warning by not adding this module to missing variable."
>> - I have included in my recipe: "python-core python-tkinter" which gave no error, but no tkinter installed and I have tried including "python-core python-modules" which gave me a
>> lot of python modules, but still no tkinter. (tried "from Tkinter import *" which gave an error and no tkinter in /usr/lib/python2.7)
>>
>> Do I manually need to install another package? Is it included or not? Do I need to do my own recipe?
> 
> To answer my own question:
> 
> Yes Tkinter is included in Python build but as the patch states it needs tcl as well as tk with tcl already included in Yocto and tk not.
> 
> Andrei Gherzan wrote a .bb for OE-Core for tk version 8.5.11 which did work for me after bumping it to the latest version 8.6.1.
> 
> If anybody needs it or wants to integrate it in Yocto here is the bb: (just remember to include tk and tcl in your build or add dependencies for them in python).
> 
> http://pastebin.com/tRGk0U0c

Note: there was already a recipe for tk 8.6.0 in meta-oe (always a
good place to check for missing pieces before crafting your own)

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

Re: Is Python Tkinter available for Yocto

[Jens Lucius]

Am 04.04.2014 16:42, schrieb Gary Thomas:
> On 2014-04-04 08:34, Jens Lucius wrote:
>>> I am a little bit confused if Python Tkinter is included as a package for python in the Yocto system.
>>>
>>> - There is a patch for python recipe called "avoid_warning_about_tkinter.patch" which states "_tkinter module needs tk module along with tcl. tk is not yet integrated in yocto so
>>> we skip the check for this module. Avoid a warning by not adding this module to missing variable."
>>> - I have included in my recipe: "python-core python-tkinter" which gave no error, but no tkinter installed and I have tried including "python-core python-modules" which gave me a
>>> lot of python modules, but still no tkinter. (tried "from Tkinter import *" which gave an error and no tkinter in /usr/lib/python2.7)
>>>
>>> Do I manually need to install another package? Is it included or not? Do I need to do my own recipe?
>> To answer my own question:
>>
>> Yes Tkinter is included in Python build but as the patch states it needs tcl as well as tk with tcl already included in Yocto and tk not.
>>
>> Andrei Gherzan wrote a .bb for OE-Core for tk version 8.5.11 which did work for me after bumping it to the latest version 8.6.1.
>>
>> If anybody needs it or wants to integrate it in Yocto here is the bb: (just remember to include tk and tcl in your build or add dependencies for them in python).
>>
>> http://pastebin.com/tRGk0U0c
> Note: there was already a recipe for tk 8.6.0 in meta-oe (always a
> good place to check for missing pieces before crafting your own)
>
Actually there is. Don´t know why I missed that. I just started with 
yocto this week and still get confused where to best look for recipes. 
There is the old openembedded, meta-oe, oe-core/meta, yocto and some are 
floating around in other gits. Would be really nice to have one place to go.

But thanks again for pointing to the meta-oe where I will also look for 
recipes in the future.

Re: Is Python Tkinter available for Yocto

[Paul Barker]

On 4 April 2014 16:36, Jens Lucius <jenslucius@freenet.de> wrote:
> Am 04.04.2014 16:42, schrieb Gary Thomas:
>>
>> Note: there was already a recipe for tk 8.6.0 in meta-oe (always a
>> good place to check for missing pieces before crafting your own)
>>
> Actually there is. Don´t know why I missed that. I just started with yocto
> this week and still get confused where to best look for recipes. There is
> the old openembedded, meta-oe, oe-core/meta, yocto and some are floating
> around in other gits. Would be really nice to have one place to go.
>
> But thanks again for pointing to the meta-oe where I will also look for
> recipes in the future.
>

The best place to search is usually
http://layers.openembedded.org/layerindex/branch/master/recipes/

Just make sure you check the README for any layers you include to see
what else they depend on (e.g. some layers depend on the meta-oe
layer).

Recipes from the old openembedded repo usually need a bit of work to
bring them up to date, they're a good last resort before writing your
own recipe for something.

Cheers,

-- 
Paul Barker

Email: paul@paulbarker.me.uk
http://www.paulbarker.me.uk

Building python module after compiling in one recipe

[Jens Lucius]

Hi

I am trying to bitbake pjproject including the python module. I manged 
to write a working .bb recipe for the latest pjproject, which compiles 
and installes correctly. But I also want to build the python module.

The documentation of pjproject says about building the python module:

 1. Build the PJSIP libraries first with the usual "./configure && make
    dep && make" commands.
 2. Go to pjsip-apps/src/python directory.
 3. Run *'sudo python ./setup.py install'* or just *'sudo make'*

So I guess with the working recipe I got part 1. I tried to do stepts 2 
and 3 by adding the following:

do_compile_append() {
export BUILD_SYS
export HOST_SYS
export STAGING_INCDIR
export STAGING_LIBDIR

cd ${S}/pjsip-apps/src/python
oe_runmake
}

which starts the building process but then terminates with:

| cc1: warning: include location "/usr/include/python2.7" is unsafe for 
cross-compilation [-Wpoison-system-directories]
| In file included from _pjsua.c:20:0:
| _pjsua.h:25:20: fatal error: Python.h: No such file or directory

So I guess it is trying to use the host python for building the module 
(which is obviously not correct).

So can I build them both in one recipe and how? And if built correctly 
how to install the modules?

Thanks for your help.