Commit bbf6ea0b authored by Marius Vlad's avatar Marius Vlad Committed by Pekka Paalanen

build: Add sphinx/breathe support for generating documentation

This is adds basic configuration files for doxygen and for breathe,
which is a doxygen-to-sphinx bridge that can document C symbols.

Breathe is configured with default project 'weston' and implicitly adds
:members: and :undoc-members: to breathe configuration options.
This allows a shorter way to call breathe directives without the need
specify the project and also to display implicitly all the members,
documented or not.

A 'docs' run_target to force the docs to be re-built has been added.
Initially (the first time the build system is ran) the documentation
will automatically be built, but later re-builds will require the use of
the 'docs' target. This avoid further delays in building weston but in
the same time allows the possiblity to update/improve the documentation
bits to those who want that.
Signed-off-by: Marius Vlad's avatarMarius Vlad <>
parent 71309894
# -*- coding: utf-8 -*-
# Configuration file for the Sphinx documentation builder.
# This file does only contain a selection of the most common options. For a
# full list see the documentation:
# -- Path setup --------------------------------------------------------------
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
import os
import sys
import sphinx
# -- Project information -----------------------------------------------------
project = u'weston'
copyright = u'2019, Weston community'
author = u'Weston community '
# The short X.Y version
version = u''
# The full version, including alpha/beta/rc tags
release = u'@VERSION@'
# -- General configuration ---------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
needs_sphinx = '2.1.0'
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
breathe_projects = { "weston": "@BUILD_ROOT@/xml/" }
breathe_default_members = ('members', 'undoc-members')
breathe_default_project = "weston"
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix(es) of source filenames.
# You can specify multiple suffix as a list of string:
source_suffix = ['.rst' ]
# The master toctree document.
master_doc = 'index'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = None
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This pattern also affects html_static_path and html_extra_path.
exclude_patterns = []
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = None
# default domain
primary_domain = 'cpp'
# -- Options for HTML output -------------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
html_theme = 'sphinx_rtd_theme'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
# html_theme_options = {}
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
# html_static_path = ['_static']
# Custom sidebar templates, must be a dictionary that maps document names
# to template names.
# The default sidebars (for documents that don't match any pattern) are
# defined by theme itself. Builtin themes are using these templates by
# default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
# 'searchbox.html']``.
# html_sidebars = {}
# -- Options for HTMLHelp output ---------------------------------------------
# Output file base name for HTML help builder.
htmlhelp_basename = 'weston'
# -- Options for LaTeX output ------------------------------------------------
latex_elements = {
# The paper size ('letterpaper' or 'a4paper').
# 'papersize': 'letterpaper',
# The font size ('10pt', '11pt' or '12pt').
# 'pointsize': '10pt',
# Additional stuff for the LaTeX preamble.
# 'preamble': '',
# Latex figure (float) alignment
# 'figure_align': 'htbp',
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title,
# author, documentclass [howto, manual, or own class]).
latex_documents = [
(master_doc, 'weston.tex', u'Weston Documentation',
u'Weston community', 'manual'),
# -- Options for manual page output ------------------------------------------
# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
(master_doc, 'weston', u'Weston Documentation',
[author], 1)
# -- Options for Texinfo output ----------------------------------------------
# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
# dir menu entry, description, category)
texinfo_documents = [
(master_doc, 'weston', u'Wweston Documentation',
author, 'Weston community', 'Weston Documentation'
# -- Options for Epub output -------------------------------------------------
# Bibliographic Dublin Core info.
epub_title = project
# The unique identifier of the text. This can be a ISBN number
# or the project homepage.
# epub_identifier = ''
# A unique identification for the text.
# epub_uid = ''
# A list of files that should not be packed into the epub file.
epub_exclude_files = ['search.html']
# -- Extension configuration -------------------------------------------------
# -- Options for intersphinx extension ---------------------------------------
# Example configuration for intersphinx: refer to the Python standard library.
intersphinx_mapping = {'': None}
# -- Options for todo extension ----------------------------------------------
# If true, `todo` and `todoList` produce output, else they produce nothing.
todo_include_todos = True
This source diff could not be displayed because it is too large. You can view the blob instead.
Welcome to Weston documentation!
.. toctree::
:maxdepth: 2
:caption: Contents:
Weston is the reference implementation of a Wayland compositor, as well as a
useful environment in and of itself.
Out of the box, Weston provides a very basic desktop, or a full-featured
environment for non-desktop uses such as automotive, embedded, in-flight,
industrial, kiosks, set-top boxes and TVs. It also provides a library allowing
other projects to build their own full-featured environments on top of Weston's
The core focus of Weston is correctness and reliability. Weston aims to be lean
and fast, but more importantly, to be predictable. Whilst Weston does have
known bugs and shortcomings, we avoid unknown or variable behaviour as much as
possible, including variable performance such as occasional spikes in frame
display time.
Indices and tables
* :ref:`genindex`
* :ref:`search`
sphinx = find_program('sphinx-build', required: true)
doxygen = find_program('doxygen', required: true)
breathe = find_program('breathe-apidoc', required: true)
sphinx_c = run_command(sphinx, '--version')
breathe_c = run_command(breathe, '--version')
doxygen_c = run_command(doxygen, '--version')
sphinx_v = sphinx_c.stdout().split(' ')[1].strip()
breathe_v = breathe_c.stdout().split(' ')[2].strip()
doxygen_v = doxygen_c.stdout().strip()
if sphinx_v.version_compare('< 2.1.0')
error('Use at least sphinx version 2.1.0, found ' + sphinx_v)
if breathe_v.version_compare('< 4.11')
error('Use at least breathe version 4.11, found ' + breathe_v)
if doxygen_v.version_compare('< 1.8')
error('Use at least doxygen version 1.8, found ' + doxygen_v)
doxygen_database = meson.current_build_dir() + '/doxygen_doc'
# modify the sphinx configuration and the breathe doxygen XML database
# to point where its being generated by doxygen
sphinx_conf_data = configuration_data()
sphinx_conf_data.set('BUILD_ROOT', doxygen_database)
sphinx_conf_data.set('VERSION', meson.project_version())
sphinx_conf = configure_file(
input: '',
output: '',
configuration: sphinx_conf_data
doxy_conf_data = configuration_data()
doxy_conf_data.set('SRC_ROOT', meson.source_root())
doxy_conf_data.set('OUTPUT_DIR', doxygen_database)
doxygen_conf_weston = configure_file(
input: '',
output: 'doxygen.ini',
configuration: doxy_conf_data
script_data = configuration_data()
script_data.set('SRCDIR', meson.current_build_dir())
script_data.set('OUTDIR', meson.current_build_dir() + '/doc')
script_data.set('DOXYGEN_CONF', meson.current_build_dir() + '/doxygen.ini')
script_data.set('DOXYGEN_CMD', doxygen.path())
script_data.set('SPHINX_CMD', sphinx.path())
script_doxy_sphinx = configure_file(
input: '',
output: '',
configuration: script_data
doxygen_target = custom_target(
command: [ doxygen, doxygen_conf_weston ],
output: 'doxygen_doc',
build_by_default: false
# copy everything to build_dir, if you plan on adding other files in the top
# rootdir of sourcedir, please add them here as well, otherwise use 'toc/'s
# file
sphinx_files = ['index.rst']
foreach file : sphinx_files
configure_file(input: file, output: file, copy: true)
# and those in toc
sphinx_doc = custom_target(
command: script_doxy_sphinx,
output: 'doc',
build_by_default: true,
depends: doxygen_target
# we need this because we will have a stale 'doc' directory
# and this forces it to be rebuilt
docs = run_target(
command: script_doxy_sphinx,
install_dir: join_paths(dir_data, 'doc', 'weston'),
strip_directory: true,
.. toctree::
:maxdepth: 2
:caption: Contents:
`Libweston` is an effort to separate the re-usable parts of Weston into a
library. `Libweston` provides most of the boring and tedious bits of correctly
implementing core Wayland protocols and interfacing with input and output
systems, so that people who just want to write a new "Wayland window manager"
(WM) or a small desktop environment (DE) can focus on the WM part.
Libweston was first introduced in Weston 1.12, and is expected to continue
evolving through many Weston releases before it achieves a stable API and
feature completeness.
`Libweston`'s primary purpose is exporting an API for creating Wayland
compositors. Libweston's secondary purpose is to export the weston_config API
so that third party plugins and helper programs can read :file:`weston.ini` if
they want to. However, these two scopes are orthogonal and independent. At no
point will the compositor functionality use or depend on the weston_config
Further work
In current form, `libweston` is an amalgam of various APIs mashed together and
currently it needs a large clean-up and re-organization and possibly, a split
into class-specific files. The documentation only provide the public
API and not the private API used inside `libweston` or other functionality
required in the core internals of the library.
With that in mind we see the following steps needed to achieve that:
- migrate everything that should not reside in the public API (for instance,
the doxygen **\\internal** command is a clear indication that that symbol
should not be present in the public API) to private headers.
- if needed be, create class-specific files, like **input** and **output**
which should tackle specific functionality, and allows to write the
documentation parts much easier, and provides clarity for `libweston`
users when they'd read it.
:type:`weston_compositor` represents the core object of the library, which
aggregates all the other objects and maintains their state. You can create it
using :func:`weston_compositor_create`, while for destroying it and releasing all
the resources associated with it, you should use :func:`weston_compositor_destroy`.
A head usually refers to a monitor, but it can also refer to an output window
in case of a nested compositor. A :type:`weston_output` is responsible for
driving a :type:`weston_head`. :type:`weston_head` should be initialized using
:func:`weston_head_init`, and shall be released using
.. note::
:func:`weston_head_init` and :func:`weston_head_release` belong to the
private/internal backend API and should be moved accordingly once that
section has been created.
A :type:`weston_head` must be attached/detached from a :type:`weston_output`.
To that purpose you can use :func:`weston_output_attach_head`, respectively
# you need to add here any files you add to the toc directory as well
files = [ 'compositor.rst', 'head.rst', 'output.rst' ]
foreach file : files
configure_file(input: file, output: file, copy: true)
With at least a :type:`weston_head` attached, you can construct a
:type:`weston_output` object which can be used by the compositor, by enabling
the output using :func:`weston_output_enable`. The output **must not** be
already enabled.
The reverse operation, :func:`weston_output_disable`, should be used when there's
a need to reconfigure the output or it will be destroyed.
# you need to add here any files you add to the toc directory as well
files = [ 'libweston.rst' ]
foreach file : files
configure_file(input: file, output: file, copy: true)
......@@ -161,5 +161,8 @@ subdir('man')
configure_file(output: 'config.h', configuration: config_h)
# TODO: process doc/doxygen/*
if get_option('doc')
message('Documentation will not be built. Use -Ddoc to build it.')
......@@ -204,3 +204,9 @@ option(
value: true,
description: 'Tests: output JUnit XML results'
type: 'boolean',
value: false,
description: 'Generate documentation'
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