Commit 22cba31b authored by Jani Nikula's avatar Jani Nikula

Documentation/sphinx: add basic working Sphinx configuration and build

Add basic configuration and makefile to build documentation from any
.rst files under Documentation using Sphinx. For starters, there's just
the placeholder index.rst.

At the top level Makefile, hook Sphinx documentation targets alongside
(but independent of) the DocBook toolchain, having both be run on the
various 'make *docs' targets.

All Sphinx processing is placed into Documentation/Makefile.sphinx. Both
that and the Documentation/DocBook/Makefile are now expected to handle
all the documentation targets, explicitly ignoring them if they're not
relevant for that particular toolchain. The changes to the existing
DocBook Makefile are kept minimal.

There is graceful handling of missing Sphinx and rst2pdf (which is
needed for pdf output) by checking for the tool and python module,
respectively, with informative messages to the user.

If the Read the Docs theme (sphinx_rtd_theme) is available, use it, but
otherwise gracefully fall back to the Sphinx default theme, with an
informative message to the user, and slightly less pretty HTML output.

Sphinx can now handle htmldocs, pdfdocs (if rst2pdf is available),
epubdocs and xmldocs targets. The output documents are written into per
output type subdirectories under Documentation/output.

Finally, you can pass options to sphinx-build using the SPHINXBUILD make
variable. For example, 'make SPHINXOPTS=-v htmldocs' for more verbose
output from Sphinx.

This is based on the original work by Jonathan Corbet, but he probably
wouldn't recognize this as his own anymore.
Signed-off-by: default avatarJani Nikula <>
parent 86ae2e38
......@@ -33,10 +33,6 @@ PDF_METHOD = $(prefer-db2x)
PS_METHOD = $(prefer-db2x)
# The targets that may be used.
PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs
targets += $(DOCBOOKS)
BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
xmldocs: $(BOOKS)
......@@ -63,6 +59,9 @@ installmandocs: mandocs
sort -k 2 -k 1 | uniq -f 1 | sed -e 's: :/:' | \
xargs install -m 644 -t /usr/local/man/man9/
# no-op for the DocBook toolchain
#External programs used
KERNELDOCXMLREF = $(srctree)/scripts/kernel-doc-xml-ref
# -*- makefile -*-
# Makefile for Sphinx documentation
# You can set these variables from the command line.
SPHINXBUILD = sphinx-build
BUILDDIR = $(obj)/output
# User-friendly check for sphinx-build
HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)
ifeq ($(HAVE_SPHINX),0)
$(warning The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed and in PATH, or set the SPHINXBUILD make variable to point to the full path of the '$(SPHINXBUILD)' executable.)
@echo " SKIP Sphinx $@ target."
# User-friendly check for rst2pdf
HAVE_RST2PDF := $(shell if python -c "import rst2pdf" >/dev/null 2>&1; then echo 1; else echo 0; fi)
# Internal variables.
PAPEROPT_a4 = -D latex_paper_size=a4
PAPEROPT_letter = -D latex_paper_size=letter
ALLSPHINXOPTS = -d $(BUILDDIR)/.doctrees $(PAPEROPT_$(PAPER)) -c $(srctree)/$(src) $(SPHINXOPTS) $(srctree)/$(src)
# the i18n builder cannot share the environment and doctrees with the others
quiet_cmd_sphinx = SPHINX $@
cmd_sphinx = $(SPHINXBUILD) -b $2 $(ALLSPHINXOPTS) $(BUILDDIR)/$2
$(call cmd,sphinx,html)
ifeq ($(HAVE_RST2PDF),0)
$(warning The Python 'rst2pdf' module was not found. Make sure you have the module installed to produce PDF output.)
@echo " SKIP Sphinx $@ target."
$(call cmd,sphinx,pdf)
endif # HAVE_RST2PDF
$(call cmd,sphinx,epub)
$(call cmd,sphinx,xml)
# no-ops for the Sphinx toolchain
$(Q)rm -rf $(BUILDDIR)
This diff is collapsed.
.. The Linux Kernel documentation master file, created by
sphinx-quickstart on Fri Feb 12 13:51:46 2016.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
Welcome to The Linux Kernel's documentation!
Nothing for you to see here *yet*. Please move along.
.. toctree::
:maxdepth: 2
Indices and tables
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`
......@@ -1412,8 +1412,11 @@ $(help-board-dirs): help-%:
# Documentation targets
# ---------------------------------------------------------------------------
%docs: scripts_basic FORCE
DOC_TARGETS := xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs epubdocs cleandocs
$(DOC_TARGETS): scripts_basic FORCE
$(Q)$(MAKE) $(build)=scripts build_docproc build_check-lc_ctype
$(Q)$(MAKE) $(build)=Documentation -f $(srctree)/Documentation/Makefile.sphinx $@
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
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