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# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.20.0)
project(Zephyr-Kernel-Doc LANGUAGES)
set(MIN_WEST_VERSION 1.0.0)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE} .. COMPONENTS doc)
file(TO_CMAKE_PATH "${ZEPHYR_BASE}" ZEPHYR_BASE)
message(STATUS "Zephyr base: ${ZEPHYR_BASE}")
#-------------------------------------------------------------------------------
# Options
set(SPHINXOPTS "-j auto" CACHE STRING "Default Sphinx Options")
set(LATEXMKOPTS "-halt-on-error -no-shell-escape" CACHE STRING "Default latexmk options")
set(DT_TURBO_MODE OFF CACHE BOOL "Enable DT turbo mode")
set(DOC_TAG "development" CACHE STRING "Documentation tag")
set(DTS_ROOTS "${ZEPHYR_BASE}" CACHE STRING "DT bindings root folders")
separate_arguments(SPHINXOPTS)
separate_arguments(LATEXMKOPTS)
#-------------------------------------------------------------------------------
# Dependencies
find_package(Doxygen REQUIRED dot)
find_program(SPHINXBUILD sphinx-build)
if(NOT SPHINXBUILD)
message(FATAL_ERROR "The 'sphinx-build' command was not found")
endif()
find_package(LATEX COMPONENTS PDFLATEX)
find_program(LATEXMK latexmk)
if(NOT LATEX_PDFLATEX_FOUND OR NOT LATEXMK)
message(WARNING "LaTeX components not found. PDF build will not be available.")
endif()
#-------------------------------------------------------------------------------
# Environment & Paths
set(SPHINX_ENV
DOXYGEN_EXECUTABLE=${DOXYGEN_EXECUTABLE}
DOT_EXECUTABLE=${DOXYGEN_DOT_EXECUTABLE}
)
set(DOCS_CFG_DIR ${CMAKE_CURRENT_LIST_DIR})
set(DOCS_DOCTREE_DIR ${CMAKE_CURRENT_BINARY_DIR}/doctrees)
set(DOCS_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(DOCS_SRC_DIR ${CMAKE_CURRENT_BINARY_DIR}/src)
set(DOCS_HTML_DIR ${CMAKE_CURRENT_BINARY_DIR}/html)
set(DOCS_LINKCHECK_DIR ${CMAKE_CURRENT_BINARY_DIR}/linkcheck)
set(DOCS_LATEX_DIR ${CMAKE_CURRENT_BINARY_DIR}/latex)
if(WIN32)
set(SEP $<SEMICOLON>)
else()
set(SEP :)
endif()
#-------------------------------------------------------------------------------
# Functions
# Create a custom doc target.
#
# This function has the same signature as `add_custom_target()`
#
# The function will create two targets for the doc build system.
# - Target 1 named: `<name>`
# - Target 2 named: `<name>-nodeps`
#
# Both targets will produce same result, but target 2 must have no dependencies.
# This is useful to, e.g. re-run the Sphinx build without dependencies such as
# devicetree generator.
#
function(add_doc_target name)
add_custom_target(${name} ${ARGN})
add_custom_target(${name}-nodeps ${ARGN})
endfunction()
#-------------------------------------------------------------------------------
# Doxygen (standalone)
set(DOXY_OUT ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
set(DOXYFILE_IN ${CMAKE_CURRENT_LIST_DIR}/zephyr.doxyfile.in)
set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/zephyr.doxyfile)
set(ZEPHYR_VERSION "${Zephyr_VERSION}")
configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
add_custom_target(
doxygen
COMMAND
${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}
COMMENT "Running Doxygen..."
)
set_target_properties(
doxygen
PROPERTIES
ADDITIONAL_CLEAN_FILES "${DOXY_OUT}"
)
#-------------------------------------------------------------------------------
# devicetree
set(GEN_DEVICETREE_REST_SCRIPT ${CMAKE_CURRENT_LIST_DIR}/_scripts/gen_devicetree_rest.py)
set(DTS_ARGS)
foreach(root ${DTS_ROOTS})
list(APPEND DTS_ARGS --dts-root ${root})
endforeach()
if(DT_TURBO_MODE)
list(APPEND DTS_ARGS --turbo-mode)
endif()
add_custom_target(
devicetree
COMMAND ${CMAKE_COMMAND} -E env
PYTHONPATH=${ZEPHYR_BASE}/scripts/dts/python-devicetree/src${SEP}$ENV{PYTHONPATH}
ZEPHYR_BASE=${ZEPHYR_BASE}
${PYTHON_EXECUTABLE} ${GEN_DEVICETREE_REST_SCRIPT}
--vendor-prefixes ${ZEPHYR_BASE}/dts/bindings/vendor-prefixes.txt
${DTS_ARGS}
${DOCS_SRC_DIR}/build/dts/api
VERBATIM
USES_TERMINAL
COMMENT "Generating Devicetree bindings documentation..."
)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${GEN_DEVICETREE_REST_SCRIPT})
#-------------------------------------------------------------------------------
# html
add_doc_target(
html
COMMAND ${CMAKE_COMMAND} -E env ${SPHINX_ENV}
${SPHINXBUILD}
-b html
-c ${DOCS_CFG_DIR}
-d ${DOCS_DOCTREE_DIR}
-w ${DOCS_BUILD_DIR}/html.log
-t ${DOC_TAG}
${SPHINXOPTS}
${DOCS_SRC_DIR}
${DOCS_HTML_DIR}
USES_TERMINAL
COMMENT "Running Sphinx HTML build..."
)
set_target_properties(
html html-nodeps
PROPERTIES
ADDITIONAL_CLEAN_FILES "${DOCS_SRC_DIR};${DOCS_HTML_DIR};${DOCS_DOCTREE_DIR}"
)
add_dependencies(html devicetree)
#-------------------------------------------------------------------------------
# pdf
add_doc_target(
latex
COMMAND ${CMAKE_COMMAND} -E env ${SPHINX_ENV}
${SPHINXBUILD}
-b latex
-c ${DOCS_CFG_DIR}
-d ${DOCS_DOCTREE_DIR}
-w ${DOCS_BUILD_DIR}/latex.log
-t ${DOC_TAG}
-t svgconvert
${SPHINXOPTS}
${DOCS_SRC_DIR}
${DOCS_LATEX_DIR}
USES_TERMINAL
COMMENT "Running Sphinx LaTeX build..."
)
set_target_properties(
latex latex-nodeps
PROPERTIES
ADDITIONAL_CLEAN_FILES "${DOCS_SRC_DIR};${DOCS_LATEX_DIR};${DOCS_DOCTREE_DIR}"
)
add_dependencies(latex devicetree)
if(LATEX_PDFLATEX_FOUND AND LATEXMK)
if(WIN32)
set(PDF_BUILD_COMMAND "make.bat")
else()
find_program(MAKE make)
if(NOT MAKE)
message(FATAL_ERROR "The 'make' command was not found")
endif()
set(PDF_BUILD_COMMAND ${MAKE})
endif()
add_custom_target(
pdf
COMMAND ${CMAKE_COMMAND} -E env LATEXMKOPTS="${LATEXMKOPTS}"
${PDF_BUILD_COMMAND}
WORKING_DIRECTORY ${DOCS_LATEX_DIR}
COMMENT "Building PDF file..."
USES_TERMINAL
)
add_dependencies(pdf latex)
endif()
#-------------------------------------------------------------------------------
# linkcheck
add_doc_target(
linkcheck
COMMAND ${CMAKE_COMMAND} -E env ${SPHINX_ENV}
${SPHINXBUILD}
-b linkcheck
-c ${DOCS_CFG_DIR}
-d ${DOCS_DOCTREE_DIR}
-w ${DOCS_BUILD_DIR}/linkcheck.log
-t ${DOC_TAG}
${SPHINXOPTS}
${DOCS_SRC_DIR}
${DOCS_LINKCHECK_DIR}
USES_TERMINAL
COMMENT "Running Sphinx link check..."
)
set_target_properties(
linkcheck linkcheck-nodeps
PROPERTIES
ADDITIONAL_CLEAN_FILES "${DOCS_SRC_DIR};${DOCS_LINKCHECK_DIR};${DOCS_DOCTREE_DIR}"
)
add_dependencies(linkcheck devicetree)
#-------------------------------------------------------------------------------
# others
add_custom_target(
pristine
COMMAND ${CMAKE_COMMAND} -P ${ZEPHYR_BASE}/cmake/pristine.cmake
)