add_custom_target(docs_chm
COMMENT "Generating CHM documentation."
COMMAND ${CMAKE_COMMAND} -E env VERSION=${VERSION} HTML_HELP_COMPILER=${HTML_HELP_COMPILER} INDEX_DOC=index_html.dox ${DOXYGEN_EXECUTABLE} Doxyfile_chm
COMMAND ${CMAKE_COMMAND} -E copy_directory ${PROJECT_BINARY_DIR}/chm/html/examples ${PROJECT_BINARY_DIR}/chm/examples
COMMAND ${CMAKE_COMMAND} -E copy ${PROJECT_BINARY_DIR}/chm/index.hhp ${PROJECT_BINARY_DIR}/chm/doxygen_manual.hhp
COMMAND ${CMAKE_COMMAND} -E echo "import os" > ${PROJECT_BINARY_DIR}/chm/doxygen_manual_examples_chm.py
COMMAND ${CMAKE_COMMAND} -E echo "for root, dirs, files in os.walk('examples'):" >> ${PROJECT_BINARY_DIR}/chm/doxygen_manual_examples_chm.py
COMMAND ${CMAKE_COMMAND} -E echo " for file in files:" >> ${PROJECT_BINARY_DIR}/chm/doxygen_manual_examples_chm.py
COMMAND ${CMAKE_COMMAND} -E echo " if file.endswith('.html') or file.endswith('.png') or file.endswith('.svg') or file.endswith('.css') or file.endswith('.gif'):" >> ${PROJECT_BINARY_DIR}/chm/doxygen_manual_examples_chm.py
COMMAND ${CMAKE_COMMAND} -E echo " print(os.path.join(root, file))" >> ${PROJECT_BINARY_DIR}/chm/doxygen_manual_examples_chm.py
COMMAND ${CMAKE_COMMAND} -E chdir ${PROJECT_BINARY_DIR}/chm ${Python_EXECUTABLE} ${PROJECT_BINARY_DIR}/chm/doxygen_manual_examples_chm.py >> ${PROJECT_BINARY_DIR}/chm/doxygen_manual.hhp
COMMAND ${CMAKE_COMMAND} -E chdir ${PROJECT_BINARY_DIR}/chm "${HTML_HELP_COMPILER}" doxygen_manual.hhp || echo > nul
COMMAND ${CMAKE_COMMAND} -E rename ${PROJECT_BINARY_DIR}/chm/index.chm ${PROJECT_BINARY_DIR}/chm/doxygen_manual.chm
DEPENDS ${PROJECT_BINARY_DIR}/doc/language.dox ${PROJECT_BINARY_DIR}/doc/config.dox
DEPENDS ${OUT_DOC_FILES}
DEPENDS ${OUT_DOC_CHM_FILES}
DEPENDS examples_chm
DEPENDS doxygen
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/doc/
)