doc-rst: generic way to build only sphinx sub-folders
Add a generic way to build only a reST sub-folder with or
without a individual *build-theme*.
* control *sub-folders* by environment SPHINXDIRS
* control *build-theme* by environment SPHINX_CONF
Folders with a conf.py file, matching $(srctree)/Documentation/*/conf.py
can be build and distributed *stand-alone*. E.g. to compile only the
html of 'media' and 'gpu' folder use::
make SPHINXDIRS="media gpu" htmldocs
To use an additional sphinx-build configuration (*build-theme*) set the
name of the configuration file to SPHINX_CONF. E.g. to compile only the
html of 'media' with the *nit-picking* build use::
make SPHINXDIRS=media SPHINX_CONF=conf_nitpick.py htmldocs
With this, the Documentation/conf.py is read first and updated with the
configuration values from the Documentation/media/conf_nitpick.py.
Signed-off-by: Markus Heiser <markus.heiser@darmarIT.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/Documentation/sphinx/load_config.py b/Documentation/sphinx/load_config.py
new file mode 100644
index 0000000..301a21a
--- /dev/null
+++ b/Documentation/sphinx/load_config.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8; mode: python -*-
+# pylint: disable=R0903, C0330, R0914, R0912, E0401
+
+import os
+import sys
+from sphinx.util.pycompat import execfile_
+
+# ------------------------------------------------------------------------------
+def loadConfig(namespace):
+# ------------------------------------------------------------------------------
+
+ u"""Load an additional configuration file into *namespace*.
+
+ The name of the configuration file is taken from the environment
+ ``SPHINX_CONF``. The external configuration file extends (or overwrites) the
+ configuration values from the origin ``conf.py``. With this you are able to
+ maintain *build themes*. """
+
+ config_file = os.environ.get("SPHINX_CONF", None)
+ if (config_file is not None
+ and os.path.normpath(namespace["__file__"]) != os.path.normpath(config_file) ):
+ config_file = os.path.abspath(config_file)
+
+ if os.path.isfile(config_file):
+ sys.stdout.write("load additional sphinx-config: %s\n" % config_file)
+ config = namespace.copy()
+ config['__file__'] = config_file
+ execfile_(config_file, config)
+ del config['__file__']
+ namespace.update(config)
+ else:
+ sys.stderr.write("WARNING: additional sphinx-config not found: %s\n" % config_file)