linux-kernel - Re: Including images on Sphinx documents

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Message-ID: <20161113125250.779df4dd@lwn.net>
Date:   Sun, 13 Nov 2016 12:52:50 -0700
From:   Jonathan Corbet <corbet@....net>
To:     Mauro Carvalho Chehab <mchehab@...pensource.com>
Cc:     linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        Jani Nikula <jani.nikula@...el.com>, linux-doc@...r.kernel.org,
        ksummit-discuss@...ts.linuxfoundation.org
Subject: Re: Including images on Sphinx documents

On Mon, 7 Nov 2016 07:55:24 -0200
Mauro Carvalho Chehab <mchehab@...pensource.com> wrote:

> So, we have a few alternatives:
> 
> 1) copy (or symlink) all rst files to Documentation/output (or to the
>    build dir specified via O= directive) and generate the *.pdf there,
>    and produce those converted images via Makefile.;
> 
> 2) add an Sphinx extension that would internally call ImageMagick and/or
>    inkscape to convert the bitmap;
> 
> 3) if possible, add an extension to trick Sphinx for it to consider the 
>    output dir as a source dir too.

So, obviously, I've been letting this go by while dealing with other
stuff...

I really think that 2) is the one we want.  Copying all the stuff and
operating on the copies, beyond being a bit of a hack, just seems like a
recipe for weird build problems in the future.

We should figure out why PNG files don't work.  Maybe I'll give that a
try at some point soon, if I can find a moment.  Working around tools
bugs seems like the wrong approach.

Working from .svg seems optimial, but I don't like the --shell-escape
thing at all.

[Along those lines, we've picked up a lot of lines like this:

	 restricted \write18 enabled.

That, too, is shell execution stuff.  I've not been able to figure out
where it came from, but I would sure like to get rid of it...]

jon