set(BUILD_BREATHE_DOC OFF CACHE STRING "Enable documntation in Breathe format") set_property(CACHE BUILD_BREATHE_DOC PROPERTY STRINGS ON OFF) function(add_breathe_target) if(BUILD_BREATHE_DOC) find_package(Doxygen REQUIRED) find_package(Perl REQUIRED) set(Python_ADDITIONAL_VERSIONS 3.7 3.6 3.5 3.4 3.3 3.2) find_package(PythonInterp REQUIRED) find_package(Sphinx REQUIRED) include(FindPythonModule) find_python_module(breathe REQUIRED) find_python_module(recommonmark REQUIRED) set(options) set(oneValueArgs SOURCE_DIR BUILD_DIR CACHE_DIR HTML_DIR DOXY_FILE CONF_FILE TARGET_NAME COMMENT) set(multiValueArgs) cmake_parse_arguments(_BREATHE "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) configure_file(${_BREATHE_CONF_FILE} ${_BREATHE_BUILD_DIR}/conf.py @ONLY) configure_file(${_BREATHE_DOXY_FILE} ${_BREATHE_BUILD_DIR}/Doxyfile @ONLY) add_custom_target(${_BREATHE_TARGET_NAME} VERBATIM COMMAND ${SPHINX_EXECUTABLE} -q -b html -c ${_BREATHE_BUILD_DIR} -d ${_BREATHE_CACHE_DIR} ${_BREATHE_SOURCE_DIR} ${_BREATHE_HTML_DIR} COMMENT "Building ${_BREATHE_TARGET_NAME} documentation with Breathe" ) endif() endfunction()