FUNCTION(PLUGIN_LOCALIZATION)
    FIND_PROGRAM(GETTEXT_XGETTEXT_EXECUTABLE xgettext)
    string(REPLACE "_pi" "" I18N_NAME ${PACKAGE_NAME})
    IF (GETTEXT_XGETTEXT_EXECUTABLE)
    ADD_CUSTOM_COMMAND(
       OUTPUT po/${PACKAGE_NAME}.pot.dummy
       COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE} --force-po --package-name=${PACKAGE_NAME} --package-version="${PACKAGE_VERSION}" --output=po/${PACKAGE_NAME}.pot  --keyword=_ --width=80 --files-from=${CMAKE_CURRENT_SOURCE_DIR}/po/POTFILES.in
       DEPENDS po/POTFILES.in po/${PACKAGE_NAME}.pot
       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
       COMMENT "${I18N_NAME}-pot-update [${PACKAGE_NAME}]: Generated pot file."
    )
    ADD_CUSTOM_TARGET(${I18N_NAME}-pot-update COMMENT "[${PACKAGE_NAME}]-pot-update: Done." DEPENDS po/${PACKAGE_NAME}.pot.dummy)

    ENDIF(GETTEXT_XGETTEXT_EXECUTABLE )

    MACRO(GETTEXT_UPDATE_PO _potFile)
       SET(_poFiles ${_potFile})
       GET_FILENAME_COMPONENT(_absPotFile ${_potFile} ABSOLUTE)

       FOREACH (_currentPoFile ${ARGN})
          GET_FILENAME_COMPONENT(_absFile ${_currentPoFile} ABSOLUTE)
          GET_FILENAME_COMPONENT(_poBasename ${_absFile} NAME_WE)

          ADD_CUSTOM_COMMAND(
         OUTPUT ${_absFile}.dummy
         COMMAND ${GETTEXT_MSGMERGE_EXECUTABLE} --width=80 --strict --quiet --update --backup=none --no-location -s ${_absFile} ${_absPotFile}
         DEPENDS ${_absPotFile} ${_absFile}
         COMMENT "${I18N_NAME}-po-update [${_poBasename}]: Updated po file."
          )

          SET(_poFiles ${_poFiles} ${_absFile}.dummy)

       ENDFOREACH (_currentPoFile )

       ADD_CUSTOM_TARGET(${I18N_NAME}-po-update COMMENT "[${PACKAGE_NAME}]-po-update: Done." DEPENDS ${_poFiles})
    ENDMACRO(GETTEXT_UPDATE_PO)

    IF (GETTEXT_MSGMERGE_EXECUTABLE)
    FILE(GLOB PACKAGE_PO_FILES po/*.po)
    GETTEXT_UPDATE_PO(po/${PACKAGE_NAME}.pot ${PACKAGE_PO_FILES})
    ENDIF(GETTEXT_MSGMERGE_EXECUTABLE)

    SET(_gmoFiles)
    MACRO(GETTEXT_BUILD_MO)
       FOREACH (_poFile ${ARGN})
          GET_FILENAME_COMPONENT(_absFile ${_poFile} ABSOLUTE)
          GET_FILENAME_COMPONENT(_poBasename ${_absFile} NAME_WE)
          SET(_gmoFile ${CMAKE_CURRENT_BINARY_DIR}/${_poBasename}.mo)

          ADD_CUSTOM_COMMAND(
         OUTPUT ${_gmoFile}
         COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} --check -o ${_gmoFile} ${_absFile}
               COMMAND ${CMAKE_COMMAND} -E copy ${_gmoFile} "Resources/${_poBasename}.lproj/opencpn-${PACKAGE_NAME}.mo"

         DEPENDS ${_absFile}
         COMMENT "${I18N_NAME}-i18n [${_poBasename}]: Created mo file."
          )

    IF(APPLE)
          INSTALL(FILES ${_gmoFile} DESTINATION ${CMAKE_INSTALL_PREFIX}/bin/OpenCPN.app/Contents/Resources/${_poBasename}.lproj RENAME opencpn-${PACKAGE_NAME}.mo )
    ELSE(APPLE)
          INSTALL(FILES ${_gmoFile} DESTINATION ${PREFIX_DATA}/locale/${_poBasename}/LC_MESSAGES RENAME opencpn-${PACKAGE_NAME}.mo )
    ENDIF(APPLE)

          SET(_gmoFiles ${_gmoFiles} ${_gmoFile})
       ENDFOREACH (_poFile )
    ENDMACRO(GETTEXT_BUILD_MO)

    if(GETTEXT_MSGFMT_EXECUTABLE)
       FILE(GLOB PACKAGE_PO_FILES po/*.po)
       GETTEXT_BUILD_MO(${PACKAGE_PO_FILES})
       ADD_CUSTOM_TARGET(${I18N_NAME}-i18n COMMENT "${PACKAGE_NAME}-i18n: Done." DEPENDS ${_gmoFiles})
       ADD_DEPENDENCIES(${PACKAGE_NAME} ${I18N_NAME}-i18n)
    ENDIF(GETTEXT_MSGFMT_EXECUTABLE)
ENDFUNCTION()