# --------------------------------------------------------------------------------
#                         Documentation (no change needed).
# --------------------------------------------------------------------------------
# Add a make target 'doc' to generate API documentation with Doxygen.
# You should set options to your liking in the file 'Doxyfile.in'.

# check if Doxygen is installed
find_package(Doxygen)
if (DOXYGEN_FOUND)
    # set input and output files
    set(DOXYGEN_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)
    set(DOXYGEN_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)

    # request to configure the file
    configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)
    message("Doxygen build started")

    # note the option ALL which allows to build the docs together with the application
    add_custom_target(doc ALL
            COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
            COMMENT "Generating API documentation with Doxygen"
            VERBATIM )
else (DOXYGEN_FOUND)
    message("Doxygen need to be installed to generate the doxygen documentation")
endif (DOXYGEN_FOUND)

