fsfw/docs/CMakeLists.txt
Robin Mueller c2bf09d506 Introducing documentation with Sphinx
This PR introduces the generation of documentation based on
this excellent blog post: https://devblogs.microsoft.com/cppblog/clear-functional-c-documentation-with-sphinx-breathe-doxygen-cmake/

It combines the tools Sphinx, Doxygen and Breathe to generate good
looking HTML documentation conveniently which can be hosted easily.

The helper scripts were unified and there is now one helper.py script
which can be used to create, build and open both tests and documentation.
"./helper.py -h" can be used to get the different options.

This PR also contains some smaller fixes which were necessary for the docs
to build
2021-12-01 11:17:28 +01:00

67 lines
2.3 KiB
CMake

# This is based on this excellent posting provided by Sy:
# https://devblogs.microsoft.com/cppblog/clear-functional-c-documentation-with-sphinx-breathe-doxygen-cmake/
find_package(Doxygen REQUIRED)
find_package(Sphinx REQUIRED)
get_target_property(LIB_FSFW_PUBLIC_HEADER_DIRS ${LIB_FSFW_NAME} INTERFACE_INCLUDE_DIRECTORIES)
# TODO: Add HAL as well
file(GLOB_RECURSE LIB_FSFW_PUBLIC_HEADERS ${PROJECT_SOURCE_DIR}/src/*.h)
file(GLOB_RECURSE RST_DOC_FILES ${PROJECT_SOURCE_DIR}/docs/*.rst)
set(DOXYGEN_INPUT_DIR ${PROJECT_SOURCE_DIR}/src)
set(DOXYGEN_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/doxygen)
set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/xml/index.xml)
set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
# Replace variables inside @@ with the current values
configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)
# Doxygen won't create this for us
file(MAKE_DIRECTORY ${DOXYGEN_OUTPUT_DIR})
# Only regenerate Doxygen when the Doxyfile or public headers change
add_custom_command(
OUTPUT ${DOXYGEN_INDEX_FILE}
DEPENDS ${LIB_FSFW_PUBLIC_HEADERS}
COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}
MAIN_DEPENDENCY ${DOXYFILE_OUT} ${DOXYFILE_IN}
COMMENT "Generating docs"
VERBATIM
)
# Nice named target so we can run the job easily
add_custom_target(Doxygen ALL DEPENDS ${DOXYGEN_INDEX_FILE})
set(SPHINX_SOURCE ${CMAKE_CURRENT_SOURCE_DIR})
set(SPHINX_BUILD ${CMAKE_CURRENT_BINARY_DIR}/sphinx)
set(SPHINX_INDEX_FILE ${SPHINX_BUILD}/index.html)
# Only regenerate Sphinx when:
# - Doxygen has rerun
# - Our doc files have been updated
# - The Sphinx config has been updated
add_custom_command(
OUTPUT ${SPHINX_INDEX_FILE}
COMMAND
${SPHINX_EXECUTABLE} -b html
# Tell Breathe where to find the Doxygen output
-Dbreathe_projects.fsfw=${DOXYGEN_OUTPUT_DIR}/xml
${SPHINX_SOURCE} ${SPHINX_BUILD}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
DEPENDS
# Other docs files you want to track should go here (or in some variable)
${RST_DOC_FILES}
${DOXYGEN_INDEX_FILE}
MAIN_DEPENDENCY ${SPHINX_SOURCE}/conf.py
COMMENT "Generating documentation with Sphinx"
)
# Nice named target so we can run the job easily
add_custom_target(Sphinx ALL DEPENDS ${SPHINX_INDEX_FILE})
# Add an install target to install the docs
include(GNUInstallDirs)
install(DIRECTORY ${SPHINX_BUILD}
DESTINATION ${CMAKE_INSTALL_DOCDIR})