if( HAVE_PYTHON )

    find_package( SWIG )
    if( SWIG_FOUND )
        include( ${SWIG_USE_FILE} )
    endif()

    # preparing for generating setup.py
    if( HAVE_LIBJASPER )
        get_filename_component(JASPER_DIR ${JASPER_INCLUDE_DIR} PATH )
    endif()

    if( HAVE_LIBOPENJPEG )
        get_filename_component(OPENJPEG_LIB_DIR ${OPENJPEG_LIBRARY} PATH )
    endif()

    if( HAVE_AEC )
      get_filename_component(AEC_DIR ${AEC_INCLUDE_DIR} PATH )
    endif()

    configure_file( setup.py.in setup.py )

    # compile swig interface
    # set(CMAKE_SWIG_FLAGS "")
    # set_source_files_properties( gribapi_swig.i PROPERTIES C ON )

    # if( NUMPY_FOUND )
    #     set( CMAKE_SWIG_FLAGS "-DNUMPY" )
    #     include_directories( ${NUMPY_INCLUDE_DIRS} )
    # endif()

    ####### Do not invoke swig. Use our own generated C wrapper file ######
    set( _gribapi_swig "gribapi/_gribapi_swig${CMAKE_SHARED_LIBRARY_SUFFIX}" )
    # Build the extension module for use in build tree with RPATH pointing to the build tree
    add_custom_command( OUTPUT ${_gribapi_swig}
                        COMMAND ${PYTHON_EXECUTABLE} setup.py build_ext --inplace --rpath ${CMAKE_BINARY_DIR}/lib
                        DEPENDS grib_interface.h grib_interface.c swig_wrap_numpy.c setup.py.in eccodes )
    add_custom_target(eccodes_build_swig_wrapper ALL DEPENDS ${_gribapi_swig})

    #ecbuild_add_library(TARGET    _gribapi_swig
    #                    TYPE SHARED
    #                    NOINSTALL
    #                    SOURCES   grib_interface.h grib_interface.c swig_wrap_numpy.c
    #                    INCLUDES  ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR} ${PYTHON_INCLUDE_DIRS}
    #                    LIBS      eccodes ${PYTHON_LIBRARIES} )
    # Don't use the lib prefix.  This is needed for the python case where a _modulename.so is generated
    #set_target_properties(_gribapi_swig PROPERTIES PREFIX "")

    # Copy gribapi and eccodes python modules to build area
    file( COPY eccodes gribapi DESTINATION . )
    configure_file( swig_wrap_numpy.py gribapi/gribapi_swig.py COPYONLY )

    # Build the extension module for use in install tree with RPATH pointing to install tree
    install(CODE "execute_process(COMMAND ${PYTHON_EXECUTABLE} setup.py build_ext --rpath ${CMAKE_INSTALL_PREFIX}/${INSTALL_LIB_DIR} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})")
    # Call distutils for installation
    install(CODE "execute_process(COMMAND ${PYTHON_EXECUTABLE} setup.py install --prefix $ENV{DESTDIR}${CMAKE_INSTALL_PREFIX} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})")

endif()