Re: [PATCH 2/6] docs-rst: automatically convert Graphviz and SVG images

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Hi Daniel, Laurent

Am 02.03.2017 um 15:14 schrieb Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>:

> Hi Daniel,
> 
> On Thursday 02 Mar 2017 14:54:32 Daniel Vetter wrote:
>> On Thu, Mar 2, 2017 at 1:26 PM, Laurent Pinchart wrote:
>>> Hi Daniel,
>>> 
>>> Thank you for the patch.
>>> 
>>> With this applied, I get
>>> 
>>> make[1]: Entering directory '/home/laurent/src/iob/renesas/linux64'
>>> 
>>>  SPHINX  htmldocs -->
>>>  file:///home/laurent/src/iob/renesas/linux64/Documentation/output PARSE
>>>    include/uapi/linux/videodev2.h
>>> 
>>> Running Sphinx v1.3.1
>>> 
>>> Extension error:
>>> Could not import extension kfigure (exception: cannot import name patches)
>>> make[2]: ***
>>> [/home/laurent/src/iob/renesas/linux/Documentation/Makefile.sphinx:70:
>>> htmldocs] Error 1 make[1]: ***
>>> [/home/laurent/src/iob/renesas/linux/Makefile:1453: htmldocs] Error 2
>>> make[1]: Leaving directory '/home/laurent/src/iob/renesas/linux64' make:
>>> *** [Makefile:152: sub-make] Error 2
>>> 
>>> sphinx.directive.patches got introduced in Sphinx 1.4. If you want to bump
>>> the minimum required version I think a notice is needed.
>> 
>> Ugh. But this also goes completely over my head, no idea whether we
>> must require sphinx 1.4 (it was released Mar 28, 2016), or whether
>> there's some way to work around this ... Halp?
> 
> I'm not a Sphinx expert so I don't know, but what I can tell is that copying 
> the patches.py from Sphinx 1.4 to Documentation/sphinx/ and modifying 
> kfigure.py to import it from there fixes the build. There's thus no extra 
> depencency on Sphinx 1.4 (or newer).
> 
> I'm not sure we want to set a precedent by copying part of the Sphinx source 
> code to the kernel tree (or inlining the single small function that the module 
> provides), and I'll let someone more knowledgeable than me decide how to 
> proceed.


Aargh ... we need virtualenv! For interim something like the following
might help. In file Documentation/sphinx/kfigure.py edit the imports

...
from docutils.parsers.rst.directives import images
try:
    from sphinx.directives.patches import Figure
except ImportError:
    Figure = images.Figure 
...

And fix the class definition, so it use 'Figure' and no
longer 'patch.Figure'::

...
-class KernelFigure(patches.Figure):
+class KernelFigure(Figure):
...

Sorry that I have not yet the time to send you a decent and tested
patch. Do you like to test my suggestion? / thanks!

-- Markus --
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