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Message-Id: <bd20adabfd428fd3cd0e69c2cf146aa354932936.1638870323.git.mchehab+huawei@kernel.org>
Date: Tue, 7 Dec 2021 10:52:59 +0100
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Jonathan Corbet <corbet@....net>,
Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
"Akira Yokosawa" <akiyks@...il.com>,
"Jani Nikula" <jani.nikula@...ux.intel.com>,
Nícolas F. R. A. Prado
<nfraprado@...tonmail.com>, "Randy Dunlap" <rdunlap@...radead.org>,
Alex Shi <alexs@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH v4 1/4] docs: allow selecting a Sphinx theme
Instead of having RTD as an almost mandatory theme, allow the
user to select other themes via DOCS_THEME environment var.
There's a catch, though: as the current theme override logic is
dependent of the RTD theme, we need to move the code which
adds the CSS overrides to be inside the RTD theme logic.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
See [PATCH v4 0/4] at: https://lore.kernel.org/all/cover.1638870323.git.mchehab+huawei@kernel.org/
Documentation/Makefile | 3 ++
Documentation/conf.py | 52 +++++++++++++++++-------------
Documentation/doc-guide/sphinx.rst | 8 +++++
3 files changed, 41 insertions(+), 22 deletions(-)
diff --git a/Documentation/Makefile b/Documentation/Makefile
index c3feb657b654..11f8b3b9a7ef 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -19,6 +19,7 @@ endif
SPHINXBUILD = sphinx-build
SPHINXOPTS =
SPHINXDIRS = .
+DOCS_THEME =
_SPHINXDIRS = $(sort $(patsubst $(srctree)/Documentation/%/index.rst,%,$(wildcard $(srctree)/Documentation/*/index.rst)))
SPHINX_CONF = conf.py
PAPER =
@@ -154,4 +155,6 @@ dochelp:
@echo ' make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
@echo ' configuration. This is e.g. useful to build with nit-picking config.'
@echo
+ @echo ' make DOCS_THEME={sphinx-theme} selects a different Sphinx theme.'
+ @echo
@echo ' Default location for the generated documents is Documentation/output'
diff --git a/Documentation/conf.py b/Documentation/conf.py
index 76e5eb5cb62b..9a6a1009c2c4 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -208,16 +208,36 @@ highlight_language = 'none'
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
-# The Read the Docs theme is available from
-# - https://github.com/snide/sphinx_rtd_theme
-# - https://pypi.python.org/pypi/sphinx_rtd_theme
-# - python-sphinx-rtd-theme package (on Debian)
-try:
- import sphinx_rtd_theme
- html_theme = 'sphinx_rtd_theme'
- html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
-except ImportError:
- sys.stderr.write('Warning: The Sphinx \'sphinx_rtd_theme\' HTML theme was not found. Make sure you have the theme installed to produce pretty HTML output. Falling back to the default theme.\n')
+# Default theme
+html_theme = 'sphinx_rtd_theme'
+
+if "DOCS_THEME" in os.environ:
+ html_theme = os.environ["DOCS_THEME"]
+
+if html_theme == 'sphinx_rtd_theme':
+ # Read the Docs theme
+ try:
+ import sphinx_rtd_theme
+ html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+
+ # 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_css_files = [
+ 'theme_overrides.css',
+ ]
+ except ImportError:
+ html_theme = 'classic'
+
+if major <= 1 and minor < 8:
+ html_context = {
+ 'css_files': [],
+ }
+
+ for l in html_css_files:
+ html_context['css_files'].append('_static/' + l)
+
+sys.stderr.write("Using %s theme\n" % html_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
@@ -246,20 +266,8 @@ except ImportError:
# 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 = ['sphinx-static']
-html_css_files = [
- 'theme_overrides.css',
-]
-
-if major <= 1 and minor < 8:
- html_context = {
- 'css_files': [
- '_static/theme_overrides.css',
- ],
- }
-
# Add any extra paths that contain custom files (such as robots.txt or
# .htaccess) here, relative to this directory. These files are copied
# directly to the root of the documentation.
diff --git a/Documentation/doc-guide/sphinx.rst b/Documentation/doc-guide/sphinx.rst
index e445cb146efe..bef276c58ebe 100644
--- a/Documentation/doc-guide/sphinx.rst
+++ b/Documentation/doc-guide/sphinx.rst
@@ -138,6 +138,14 @@ To pass extra options to Sphinx, you can use the ``SPHINXOPTS`` make
variable. For example, use ``make SPHINXOPTS=-v htmldocs`` to get more verbose
output.
+By default, the build will try to use the Read the Docs sphinx theme:
+
+ https://github.com/readthedocs/sphinx_rtd_theme
+
+If the theme is not available, it will fall-back to the classic one.
+
+The Sphinx theme can be overriden by using the ``DOCS_THEME`` make variable.
+
To remove the generated documentation, run ``make cleandocs``.
Writing Documentation
--
2.33.1
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