[PATCH v2 0/8] Add a script to check for Sphinx install requirements

[Mauro Carvalho Chehab <mchehab@s-opensource.com>]

Sphinx installation is not trivial, as not all versions are supported,
and it requires a lot of stuff for math, images and PDF/LaTeX output
to work.

So, add a script that checks if everything is fine, providing
distro-specific hints about what's needed for it to work.

I posted already RFC patches for the first patch in this series along
this weekend at linux-doc ML. The current version of the script
will provide hints for some popular distributions. I tested myself
on a couple of release-based and rolling popular distributions:

            - Fedora 25 and 26;
            - Ubuntu 17.04;
            - OpenSuse Tumbleweed;
            - Arch Linux;
            - Gentoo.

I tested compilation with both htmldocs and pdfdocs targets[1].
Yet, tests (and fix patches) are welcomed :-)

Those patches are at:

   https://git.linuxtv.org/mchehab/experimental.git/log/?h=sphinx_install_v2



PS.:

1) The first patch in this series is actually independent: it
   is just a cleanup from DocBook removal patches.

2) Debian 17.04 version of ImageMagick seems capped:
   it can't read SVG texts with things like:
	font-family="'Liberation Sans', Sans"
   It also doesn't handle other random SVG tags.
   So, I had to rewrite several media SVG files to make
   them more compliant with ImageMagick.

   So far, I can't submit those patches via e-mail, as some
   lines there are bigger than 998 characters, with violates
   VGER rules for maximum number of columns. I'll try
   to break the big lines there via some scripting.

-

v2: be sure that GraphViz and ImageMagick will generate PDF
    outputs on all platforms but OpenSuse (where GraphViz
    is built without PDf support).


Mauro Carvalho Chehab (8):
  docs: Makefile: remove no-ops targets
  scripts/sphinx-pre-install: add a script to check Sphinx install
  sphinx-pre-install: detect an existing virtualenv
  sphinx-pre-install: use a requirements file
  sphinx-pre-install: check for the need of graphviz-gd
  sphinx-pre-install: add dependencies for ImageMagick to work with svg
  sphinx-pre-install: fix USE needs for GraphViz and ImageMagick
  sphinx.rst: document scripts/sphinx-pre-install script

 Documentation/Makefile                 |  10 -
 Documentation/doc-guide/sphinx.rst     |  48 ++-
 Documentation/sphinx/requirements.txt  |   3 +
 Documentation/translations/zh_CN/HOWTO |   2 -
 Makefile                               |   2 +-
 scripts/sphinx-pre-install             | 544 +++++++++++++++++++++++++++++++++
 6 files changed, 592 insertions(+), 17 deletions(-)
 create mode 100644 Documentation/sphinx/requirements.txt
 create mode 100755 scripts/sphinx-pre-install

-- 
2.13.3