SET(PACKAGE_NAME ${PROJECT_NAME})
SET(PACKAGE_VERSION ${PROJECT_VERSION})
SET(abs_top_srcdir ${PROJECT_SOURCE_DIR})
SET(abs_top_builddir ${PROJECT_BINARY_DIR})

CONFIGURE_FILE(
  ${PROJECT_SOURCE_DIR}/doc/Doxyfile.in
  ${PROJECT_BINARY_DIR}/doc/Doxyfile
  @ONLY)

IF(DOXYGEN_EXECUTABLE)
  FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/)
  IF(UNIX)
    ADD_CUSTOM_TARGET(html
      COMMAND rm -rf html
      COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
  ELSEIF(WIN32)
    ADD_CUSTOM_TARGET(html
      COMMAND if exist html rmdir /s /q html
      COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
  ENDIF(UNIX)
  INSTALL(
    DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
    DESTINATION ${INSTALL_DOC_DIR}
    COMPONENT html_documentation)
ENDIF(DOXYGEN_EXECUTABLE)