blob: 79e02e6f6dbaf24e5f83425c726696f839c3fa6b [file] [log] [blame]
# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.13.1)
project(Zephyr-Kernel-Doc LANGUAGES)
# Find west to (optionally) process modules for Kconfig
find_program(
WEST
west
)
if(${WEST} STREQUAL WEST-NOTFOUND)
unset(WEST)
endif()
set(ZEPHYR_BASE $ENV{ZEPHYR_BASE})
message(STATUS "Zephyr base: ${ZEPHYR_BASE}")
include(${ZEPHYR_BASE}/cmake/version.cmake)
# Process modules
include(${ZEPHYR_BASE}/cmake/zephyr_module.cmake)
find_package(PythonInterp 3.4)
set(DOXYGEN_SKIP_DOT True)
find_package(Doxygen REQUIRED)
find_package(LATEX)
find_program(
SPHINXBUILD
NAMES sphinx-build-3 sphinx-build
)
if(${SPHINXBUILD} STREQUAL SPHINXBUILD-NOTFOUND)
message(FATAL_ERROR "The 'sphinx-build' command was not found. Make sure you have Sphinx installed.")
endif()
# Note that this won't force fatal error if latexmk is not found.
# Not having LaTeX tools should not prevent people from generating HTML docs.
find_program(
LATEXMK
latexmk
)
if(${LATEXMK} STREQUAL LATEXMK-NOTFOUND)
message(WARNING "The 'latexmk' command was not found. Targets to build PDF will not be available.")
endif()
if(NOT DEFINED SPHINXOPTS)
set(SPHINXOPTS -q)
else()
separate_arguments(SPHINXOPTS)
endif()
if(NOT DEFINED SPHINX_OUTPUT_DIR)
set(SPHINX_OUTPUT_DIR_HTML ${CMAKE_CURRENT_BINARY_DIR}/html)
set(SPHINX_OUTPUT_DIR_LATEX ${CMAKE_CURRENT_BINARY_DIR}/latex)
set(SPHINX_OUTPUT_DIR_PDF ${CMAKE_CURRENT_BINARY_DIR}/pdf)
else()
# SPHINX_OUTPUT_DIR is used to specify exactly where HTML (or other
# outputs) are placed, so no /html, /latex, /pdf suffixes are needed.
set(SPHINX_OUTPUT_DIR_HTML ${SPHINX_OUTPUT_DIR})
set(SPHINX_OUTPUT_DIR_LATEX ${SPHINX_OUTPUT_DIR})
set(SPHINX_OUTPUT_DIR_PDF ${SPHINX_OUTPUT_DIR})
endif()
if(NOT DEFINED DOC_TAG)
set(DOC_TAG development)
endif()
# Internal variables.
set(ALLSPHINXOPTS -d ${CMAKE_CURRENT_BINARY_DIR}/doctrees ${SPHINXOPTS})
if("-q" IN_LIST ALLSPHINXOPTS)
set(SPHINX_USES_TERMINAL )
else()
set(SPHINX_USES_TERMINAL USES_TERMINAL)
endif()
# the i18n builder cannot share the environment and doctrees with the others
set(I18NSPHINXOPTS ${SPHINXOPTS})
set(DOXYFILE_IN ${CMAKE_CURRENT_LIST_DIR}/zephyr.doxyfile.in)
set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/zephyr.doxyfile)
set(DOXY_OUT ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
set(RST_OUT ${CMAKE_CURRENT_BINARY_DIR}/rst)
set(DOC_LOG ${CMAKE_CURRENT_BINARY_DIR}/doc.log)
set(DOXY_LOG ${CMAKE_CURRENT_BINARY_DIR}/doxy.log)
set(SPHINX_LOG ${CMAKE_CURRENT_BINARY_DIR}/sphinx.log)
set(DOC_WARN ${CMAKE_CURRENT_BINARY_DIR}/doc.warnings)
set(CONTENT_OUTPUTS ${CMAKE_CURRENT_BINARY_DIR}/extracted-content.txt)
configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
# This command is used to copy all documentation source files from the
# ZEPHYR_BASE/ environment variable into the build directory,
#
# We need to make copies because Sphinx requires a single
# documentation root directory, but Zephyr's documentation is
# scattered around the tree in samples/, boards/, and doc/. Putting
# them into a single rooted tree in the build directory is a
# workaround for this limitation.
set(EXTRACT_CONTENT_COMMAND
${CMAKE_COMMAND} -E env
${PYTHON_EXECUTABLE} scripts/extract_content.py
# Ignore any files in the output directory.
--ignore ${CMAKE_CURRENT_BINARY_DIR}
# Copy all files in doc to the rst folder.
"*:doc:${RST_OUT}"
# We want to copy the .rst files in samples/ and boards/ to the rst
# folder, and also the doc folder inside rst.
#
# Some files refer to items in samples/ and boards/ relative to
# their actual position in the Zephyr tree. For example, in
# subsystems/sensor.rst:
#
# .. literalinclude:: ../../samples/sensor/mcp9808/src/main.c
#
# The additional copy is a hackaround so these references work.
"*.rst:samples:${RST_OUT}" "*.rst:boards:${RST_OUT}"
"*.rst:samples:${RST_OUT}/doc" "*.rst:boards:${RST_OUT}/doc")
add_custom_target(
content
# Copy all files in doc/ to the rst folder
COMMAND ${EXTRACT_CONTENT_COMMAND}
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
COMMENT "Copying files to ${RST_OUT}"
)
# For incremental builds not to miss any source change this MUST be kept
# a superset of INPUT= and FILE_PATTERNS= in zephyr.doxyfile.in
file(GLOB_RECURSE DOXY_SOURCES
${ZEPHYR_BASE}/include/*.[c,h,S]
${ZEPHYR_BASE}/lib/libc/*.[c,h,S]
${ZEPHYR_BASE}/tests/*.[h,c,S]
)
# For debug. Also find generated list in doc/_build/(build.ninja|CMakeFiles/)
# message("DOXY_SOURCES= " ${DOXY_SOURCES})
set(ARGS ${DOXYFILE_OUT})
set(DOXY_RUN_TSTAMP ${CMAKE_CURRENT_BINARY_DIR}/last_doxy_run_tstamp)
# Create timestamp first so we re-run if source files are edited while
# doxygen is running
add_custom_command(
OUTPUT ${DOXY_RUN_TSTAMP}
COMMAND cmake -E touch ${DOXY_RUN_TSTAMP}
COMMAND ${CMAKE_COMMAND}
-DCOMMAND=${DOXYGEN_EXECUTABLE}
-DARGS="${ARGS}"
-DOUTPUT_FILE=${DOXY_LOG}
-DERROR_FILE=${DOXY_LOG}
-DWORKING_DIRECTORY=${CMAKE_CURRENT_LIST_DIR}
-P ${ZEPHYR_BASE}/cmake/util/execute_process.cmake
DEPENDS ${DOXY_SOURCES}
COMMENT "Running ${DOXYGEN_EXECUTABLE}"
)
# Doxygen doesn't support incremental builds.
# It could be ok because it's pretty fast.
# But it's not because it has a cascade effect on sphinx:
# https://sourceforge.net/p/doxygen/mailman/message/36580807/
# For now this optimization speeds-up non-doxygen documentation work
# only (by one order of magnitude).
add_custom_target(
doxy_real_modified_times
COMMAND ${CMAKE_COMMAND} -E env
${PYTHON_EXECUTABLE} scripts/restore_modification_times.py
--loglevel WARN ${DOXY_OUT}/xml
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
DEPENDS ${DOXY_RUN_TSTAMP}
COMMENT "Fixing modification times of ${DOXY_OUT}/xml/ output"
)
add_custom_target(
pristine
COMMAND ${CMAKE_COMMAND} -P ${ZEPHYR_BASE}/cmake/pristine.cmake
)
if(WIN32)
set(SEP ;)
else()
set(SEP :)
endif()
add_custom_target(
kconfig
COMMAND ${CMAKE_COMMAND} -E make_directory ${RST_OUT}/doc/reference/kconfig
COMMAND ${CMAKE_COMMAND} -E env
PYTHONPATH="${ZEPHYR_BASE}/scripts/kconfig${SEP}$ENV{PYTHONPATH}"
srctree=${ZEPHYR_BASE}
KERNELVERSION=${KERNELVERSION}
BOARD_DIR=boards/*/*/
ARCH=*
ARCH_DIR=arch/
SOC_DIR=soc/
SRCARCH=x86
CMAKE_BINARY_DIR=${CMAKE_BINARY_DIR}
KCONFIG_WARN_UNDEF=y
KCONFIG_TURBO_MODE=${KCONFIG_TURBO_MODE}
KCONFIG_DOC_MODE=1
${PYTHON_EXECUTABLE} scripts/genrest.py Kconfig ${RST_OUT}/doc/reference/kconfig/
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
COMMENT "Running genrest.py Kconfig ${RST_OUT}/doc/reference/kconfig/"
)
set(KI_SCRIPT ${ZEPHYR_BASE}/scripts/filter-known-issues.py)
set(FIX_TEX_SCRIPT ${ZEPHYR_BASE}/doc/scripts/fix_tex.py)
set(CONF_DIR ${ZEPHYR_BASE}/.known-issues/doc)
#
# HTML section
#
set(SPHINX_BUILD_HTML_COMMAND
${CMAKE_COMMAND} -E env
ZEPHYR_BUILD=${CMAKE_CURRENT_BINARY_DIR}
${SPHINXBUILD} -w ${SPHINX_LOG} -N -t ${DOC_TAG} -b html ${ALLSPHINXOPTS} ${RST_OUT}/doc ${SPHINX_OUTPUT_DIR_HTML})
# The sphinx-html target is provided as a convenience for incremental
# re-builds of content files without regenerating the entire docs
# pipeline. It can be significantly faster than re-running the full
# HTML build, but it has no idea if Doxygen, Kconfig, etc. need to be
# regenerated. Use with caution.
add_custom_target(
sphinx-html
COMMAND ${SPHINX_BUILD_HTML_COMMAND}
DEPENDS ${EXTRACT_CONTENT_OUTPUTS}
COMMENT "Just re-generating HTML (USE WITH CAUTION)"
USES_TERMINAL
)
# "breathe", the sphinx plugin that parses XML output from doxygen, has
# an "everything on everything" dependency issue reported at:
# https://github.com/michaeljones/breathe/issues/420 In other words
# changing 1 source file costs the same build time than changing all
# source files. breathe is fortunately smart enough not to run at all
# when *nothing* has changed.
add_custom_target(
html
COMMAND ${SPHINX_BUILD_HTML_COMMAND}
# Merge the Doxygen and Sphinx logs into a single file
COMMAND ${CMAKE_COMMAND} -P ${ZEPHYR_BASE}/cmake/util/fmerge.cmake ${DOC_LOG} ${DOXY_LOG} ${SPHINX_LOG}
COMMAND ${PYTHON_EXECUTABLE} ${KI_SCRIPT} --config-dir ${CONF_DIR} --errors ${DOC_WARN} --warnings ${DOC_WARN} ${DOC_LOG}
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
COMMENT "Generating HTML documentation with ${SPHINXBUILD} ${SPHINXOPTS}"
${SPHINX_USES_TERMINAL}
)
#
# LaTEX section
#
set(SPHINX_BUILD_LATEX_COMMAND
${CMAKE_COMMAND} -E env
ZEPHYR_BUILD=${CMAKE_CURRENT_BINARY_DIR}
${SPHINXBUILD} -w ${SPHINX_LOG} -N -t ${DOC_TAG} -b latex -t svgconvert ${ALLSPHINXOPTS} ${RST_OUT}/doc ${SPHINX_OUTPUT_DIR_LATEX})
# The sphinx-latex target works similarly to sphinx-html, and carries
# the same warnings.
add_custom_target(
sphinx-latex
COMMAND ${SPHINX_BUILD_LATEX_COMMAND}
DEPENDS ${EXTRACT_CONTENT_OUTPUTS}
COMMENT "Just re-generating LaTeX (USE WITH CAUTION)"
USES_TERMINAL
)
add_custom_command(
OUTPUT ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.tex
COMMAND ${SPHINX_BUILD_LATEX_COMMAND}
# Merge the Doxygen and Sphinx logs into a single file
COMMAND ${CMAKE_COMMAND} -P ${ZEPHYR_BASE}/cmake/util/fmerge.cmake ${DOC_LOG} ${DOXY_LOG} ${SPHINX_LOG}
COMMAND ${PYTHON_EXECUTABLE} ${KI_SCRIPT} --config-dir ${CONF_DIR} --errors ${DOC_WARN} --warnings ${DOC_WARN} ${DOC_LOG}
COMMAND ${PYTHON_EXECUTABLE} ${FIX_TEX_SCRIPT} ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.tex
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
COMMENT "Generating LaTeX documentation"
${SPHINX_USES_TERMINAL}
)
add_custom_target(
latex
DEPENDS ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.tex
)
#
# PDF section
#
if(NOT ${LATEXMK} STREQUAL LATEXMK-NOTFOUND)
add_custom_command(
OUTPUT ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.pdf
DEPENDS latexdocs ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.tex
COMMAND ${CMAKE_COMMAND} -E env
LATEXOPTS="-halt-on-error -no-shell-escape"
${LATEXMK} -quiet -pdf -dvi- -ps-
WORKING_DIRECTORY ${SPHINX_OUTPUT_DIR_LATEX}
COMMENT "Generating PDF documentation"
)
if(NOT DEFINED SPHINX_OUTPUT_DIR)
# Although latexmk allows specifying output directory,
# makeindex fails if one is specified.
# Hence the need of this to copy the PDF file over.
add_custom_command(
OUTPUT ${SPHINX_OUTPUT_DIR_PDF}/zephyr.pdf
COMMAND ${CMAKE_COMMAND} -E make_directory ${SPHINX_OUTPUT_DIR_PDF}
COMMAND ${CMAKE_COMMAND} -E copy ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.pdf ${SPHINX_OUTPUT_DIR_PDF}/zephyr.pdf
DEPENDS ${SPHINX_OUTPUT_DIR_LATEX}/zephyr.pdf
)
endif()
add_custom_target(
pdf
DEPENDS ${SPHINX_OUTPUT_DIR_PDF}/zephyr.pdf
)
endif()
#
# Dependencies and final targets
#
add_dependencies(html content doxy_real_modified_times kconfig)
add_custom_target(
htmldocs
)
add_dependencies(htmldocs html)
add_dependencies(latex content doxy_real_modified_times kconfig)
add_custom_target(
latexdocs
)
add_dependencies(latexdocs latex)
if(NOT ${LATEXMK} STREQUAL LATEXMK-NOTFOUND)
add_custom_target(
pdfdocs
DEPENDS latexdocs pdf
)
add_dependencies(pdfdocs pdf)
endif()