# We need Doxygen
find_package (Doxygen)

# path to the project's .dox file to include
set (DOXYGEN_DOX_FILE "${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}.dox")

# path to store doxygen output in, as html/latext subdirs
set (DOXYGEN_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}")

# path to generated doxygen .conf file
set (DOXYGEN_CONFIG "${CMAKE_CURRENT_BINARY_DIR}/doxygen.conf")

# only set up doxygen if needed
if (DOXYGEN_FOUND)
    # build the doxygen config file
    configure_file (
        "${CMAKE_CURRENT_SOURCE_DIR}/doxygen.conf.in"
        ${DOXYGEN_CONFIG}
        @ONLY
    )
    
    # add custom 'doc' target
    add_custom_target (doc 
        ${DOXYGEN_EXECUTABLE} ${DOXYGEN_CONFIG}
    )
    
else (DOXYGEN_FOUND)
    message (STATUS "Doxygen: not found")

endif (DOXYGEN_FOUND)