sphinx: initial sphinx support

This commit is autogenerated pandoc to generate an inital set
of reST files based on DocBook XML files.

A .rst file is generated for each .xml files in all manuals with this
command:

cd <manual>
for i in *.xml; do \
  pandoc -f docbook -t rst --shift-heading-level-by=-1 \
  $i -o $(basename $i .xml).rst \
done

The conversion was done with: pandoc 2.9.2.1-91 (Arch Linux).

Also created an initial top level index file for each document, and
added all 'books' to the top leve index.rst file.

The YP manuals layout is organized as:

Book
  Chapter
    Section
      Section
        Section

Sphinx uses section headers to create the document structure.
ReStructuredText defines sections headers like that:

   To break longer text up into sections, you use section headers. These
   are a single line of text (one or more words) with adornment: an
   underline alone, or an underline and an overline together, in dashes
   "-----", equals "======", tildes "~~~~~~" or any of the
   non-alphanumeric characters = - ` : ' " ~ ^ _ * + # < > that you feel
   comfortable with. An underline-only adornment is distinct from an
   overline-and-underline adornment using the same character. The
   underline/overline must be at least as long as the title text. Be
   consistent, since all sections marked with the same adornment style
   are deemed to be at the same level:

Let's define the following convention when converting from Docbook:

Book                => overline ===   (Title)
  Chapter           => overline ***   (1.)
    Section         => ====           (1.1)
      Section       => ----           (1.1.1)
        Section     => ~~~~           (1.1.1.1)
          Section   => ^^^^           (1.1.1.1.1)

During the conversion with pandoc, we used --shift-heading-level=-1 to
convert most of DocBook headings automatically. However with this
setting, the Chapter header was removed, so I added it back
manually. Without this setting all headings were off by one, which was
more difficult to manually fix.

At least with this change, we now have the same TOC with Sphinx and
DocBook.

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>

1 files changed, 26 insertions, 6 deletions

diff --git a/doc/index.rst b/doc/index.rst
index 1cc9a4d84..3ec7031f5 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -1,11 +1,31 @@
-.. The Yocto Project documentation master file, created by
-   sphinx-quickstart on Mon Apr 13 09:38:33 2020.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
+===================
+BitBake User Manual
+===================
 
-Welcome to Bitbake documentation!
-=================================
+.. include:: <xhtml1-lat1.txt>
+
+| BitBake Community
+| Copyright |copy| |copyright|
+| <bitbake-devel@lists.openembedded.org>
+
+This work is licensed under the Creative Commons Attribution License.  To view a
+copy of this license, visit http://creativecommons.org/licenses/by/2.5/ or send
+a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View,
+California 94041, USA.
+
+.. toctree::
+   :caption: Table of Contents
+   :numbered:
+
+   bitbake-user-manual/bitbake-user-manual-intro
+   bitbake-user-manual/bitbake-user-manual-execution
+   bitbake-user-manual/bitbake-user-manual-metadata
+   bitbake-user-manual/bitbake-user-manual-fetching
+   bitbake-user-manual/bitbake-user-manual-ref-variables
+   bitbake-user-manual/bitbake-user-manual-hello
 
 .. toctree::
    :maxdepth: 1
+   :hidden:
 
+   genindex