include_guard()

find_package(Doxygen)

if(DOXYGEN_FOUND)

  include(${CMAKE_CURRENT_LIST_DIR}/doxygen-setup.cmake)

  # the km3net-jpp-doxygen-mainpage target will run
  # the mainpage.sh script which generates the mainpage.dox file
  # used by Doxygen to produce the main (aka home) documentation page.
  #
  add_custom_target(km3net-jpp-doc-doxygen-mainpage
   COMMAND ${CMAKE_CURRENT_BINARY_DIR}/mainpage.sh
   BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/mainpage.dox)

  # the doxygen-mainpage.cmake file generates the mainpage.sh script
  # that is used by the target above (km3net-jpp-doxygen-mainpage).
  #
  # During the generation of the mainpage.sh, target dependencies
  # will be added to km3net-jpp-doxygen-mainpage
  # Ideally we should probably also add file dependencies (on scripts)
  # but that is not currently done.
  #
  include(${CMAKE_CURRENT_LIST_DIR}/doxygen-mainpage.cmake)

  doxygen_add_docs(
      km3net-jpp-doc-doxygen
      ${PROJECT_SOURCE_DIR}/software
      ${PROJECT_SOURCE_DIR}/examples
      ${CMAKE_CURRENT_BINARY_DIR}/mainpage.dox
      COMMENT "Generate doxygen pages"
  )

  add_dependencies(km3net-jpp-doc-doxygen km3net-jpp-doc-doxygen-mainpage)

  # if we have doxygen for km3net-dataformat, build it before our own documentation
  # as we're using it.
  if(TARGET km3net-dataformat-doxygen)
    add_dependencies(km3net-jpp-doc-doxygen-mainpage km3net-dataformat-doxygen)
  endif()

endif()