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# Building docs script
# Requirements:
# sudo apt-get install doxygen texlive ruby-dev
# sudo gem install jekyll execjs therubyracer
if(NOT BUILD_docs OR NOT DOXYGEN_FOUND)
return()
endif()
#################################################################################################
# Gather docs from <root>/examples/**/readme.md
function(gather_readmes_as_prebuild_cmd target gathered_dir root)
set(full_gathered_dir ${root}/${gathered_dir})
file(GLOB_RECURSE readmes ${root}/examples/readme.md ${root}/examples/README.md)
foreach(file ${readmes})
# Only use file if it is to be included in docs.
file(STRINGS ${file} file_lines REGEX "include_in_docs: true")
if(file_lines)
# Since everything is called readme.md, rename it by its dirname.
file(RELATIVE_PATH file ${root} ${file})
get_filename_component(folder ${file} PATH)
set(new_filename ${full_gathered_dir}/${folder}.md)
# folder value might be like <subfolder>/readme.md. That's why make directory.
get_filename_component(new_folder ${new_filename} PATH)
add_custom_command(TARGET ${target} PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E make_directory ${new_folder}
COMMAND ln -sf ${root}/${file} ${new_filename}
COMMENT "Creating symlink ${new_filename} -> ${root}/${file}"
WORKING_DIRECTORY ${root} VERBATIM)
endif()
endforeach()
endfunction()
################################################################################################
# Gather docs from examples/*.ipynb and add YAML front-matter.
function(gather_notebooks_as_prebuild_cmd target gathered_dir root)
set(full_gathered_dir ${root}/${gathered_dir})
if(NOT PYTHON_EXECUTABLE)
message(STATUS "Python interpeter is not found. Can't include *.ipynb files in docs. Skipping...")
return()
endif()
file(GLOB_RECURSE notebooks ${root}/examples/*.ipynb)
foreach(file ${notebooks})
file(RELATIVE_PATH file ${root} ${file})
set(new_filename ${full_gathered_dir}/${file})
get_filename_component(new_folder ${new_filename} PATH)
add_custom_command(TARGET ${target} PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E make_directory ${new_folder}
COMMAND ${PYTHON_EXECUTABLE} scripts/copy_notebook.py ${file} ${new_filename}
COMMENT "Copying notebook ${file} to ${new_filename}"
WORKING_DIRECTORY ${root} VERBATIM)
endforeach()
set(${outputs_var} ${outputs} PARENT_SCOPE)
endfunction()
################################################################################################
########################## [ Non macro part ] ##################################################
# Gathering is done at each 'make doc'
file(REMOVE_RECURSE ${PROJECT_SOURCE_DIR}/docs/gathered)
# Doxygen config file path
set(DOXYGEN_config_file ${PROJECT_SOURCE_DIR}/.Doxyfile CACHE FILEPATH "Doxygen config file")
# Adding docs target
add_custom_target(docs COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_config_file}
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
COMMENT "Launching doxygen..." VERBATIM)
# Gathering examples into docs subfolder
gather_notebooks_as_prebuild_cmd(docs docs/gathered ${PROJECT_SOURCE_DIR})
gather_readmes_as_prebuild_cmd(docs docs/gathered ${PROJECT_SOURCE_DIR})
# Auto detect output directory
file(STRINGS ${DOXYGEN_config_file} config_line REGEX "OUTPUT_DIRECTORY[ \t]+=[^=].*")
if(config_line)
string(REGEX MATCH "OUTPUT_DIRECTORY[ \t]+=([^=].*)" __ver_check "${config_line}")
string(STRIP ${CMAKE_MATCH_1} output_dir)
message(STATUS "Detected Doxygen OUTPUT_DIRECTORY: ${output_dir}")
else()
set(output_dir ./doxygen/)
message(STATUS "Can't find OUTPUT_DIRECTORY in doxygen config file. Try to use default: ${output_dir}")
endif()
if(NOT IS_ABSOLUTE ${output_dir})
set(output_dir ${PROJECT_SOURCE_DIR}/${output_dir})
get_filename_component(output_dir ${output_dir} ABSOLUTE)
endif()
# creates symlink in docs subfolder to code documentation built by doxygen
add_custom_command(TARGET docs POST_BUILD VERBATIM
COMMAND ln -sfn "${output_dir}/html" doxygen
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/docs
COMMENT "Creating symlink ${PROJECT_SOURCE_DIR}/docs/doxygen -> ${output_dir}/html")
# for quick launch of jekyll
add_custom_target(jekyll COMMAND jekyll serve -w -s . -d _site --port=4000
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/docs
COMMENT "Launching jekyll..." VERBATIM)
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