CMakeLists.txt

find_package(Doxygen)

if(DOXYGEN_FOUND STREQUAL "NO")
  message(STATUS "Doxygen not found. Please get a copy http://www.doxygen.org")
else()

  if("${DOXYGEN_VERSION}" VERSION_LESS 1.8.3.1)
    message(
      STATUS "Doxygen version too old. Please get a copy http://www.doxygen.org"
    )
  endif()

  # prepare doxygen configuration file
  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in
                 ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)

  # add doxygen as custom target
  add_custom_target(
    doxygen
    ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
    # POST_BUILD
    COMMAND
      ${CMAKE_COMMAND} -E copy_directory "${CMAKE_CURRENT_SOURCE_DIR}/fonts"
      "${CMAKE_CURRENT_BINARY_DIR}/html/fonts")

  # add docs as custom target
  add_custom_target(
    docs
    ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
    # POST_BUILD
    COMMAND
      ${CMAKE_COMMAND} -E copy_directory "${CMAKE_CURRENT_SOURCE_DIR}/fonts"
      "${CMAKE_CURRENT_BINARY_DIR}/html/fonts"
    COMMAND jekyll build -s "${CMAKE_CURRENT_SOURCE_DIR}/jekyll/" -d
            "${CMAKE_CURRENT_BINARY_DIR}/jekyll/"
    COMMAND
      ${CMAKE_COMMAND} -E copy_directory "${CMAKE_CURRENT_BINARY_DIR}/jekyll/"
      "${CMAKE_CURRENT_BINARY_DIR}/html/")

  # cleanup $build/html on "make clean"
  set_property(
    DIRECTORY
    APPEND
    PROPERTY ADDITIONAL_MAKE_CLEAN_FILES html)

endif()