clutter-1.0 fails to build from source in maverick

seen in a test rebuild too:
https://launchpad.net/ubuntu/+archive/test-rebuild-20100628/+build/1818459

/usr/bin/g-ir-scanner -v \
  --namespace Clutter --nsversion=1.0 \
  -I.. -I../clutter/cogl -I../clutter/cogl/pango -I../clutter -I../clutter/json -I.. -I../clutter -I../clutter/cogl \
  -DCLUTTER_PREFIX=\""/usr"\" -DCLUTTER_LIBDIR=\""/usr/lib"\" -DCLUTTER_DATADIR=\""/usr/share"\" -DCLUTTER_COMPILATION=1 -DCOGL_DISABLE_DEPRECATED -DCOGL_ENABLE_EXPERIMENTAL_API -DG_DISABLE_DEPRECATED -DG_DISABLE_SINGLE_INCLUDES -DG_LOG_DOMAIN=\"Clutter\" -DCLUTTER_ENABLE_DEBUG -DG_DISABLE_CAST_CHECKS \
  --add-include-path=cogl/cogl \
  --add-include-path=json \
  --c-include='clutter/clutter.h' \
  --include=GL-1.0 \
  --include=GObject-2.0 \
  --include=Pango-1.0 \
  --include=PangoCairo-1.0 \
  --include=Cogl-1.0 \
  --include=ClutterJson-1.0 \
  --library=libclutter-glx-1.0.la \
  --libtool="../libtool" \
         --pkg gobject-2.0 \
   \
         --pkg pango \
         --pkg pangocairo \
         --output Clutter-1.0.gir \
  ./clutter-actor.h ./clutter-alpha.h ./clutter-animatable.h ./clutter-animation.h ./clutter-animator.h ./clutter-backend.h ./clutter-behaviour.h ./clutter-behaviour-depth.h ./clutter-behaviour-ellipse.h ./clutter-behaviour-opacity.h ./clutter-behaviour-path.h ./clutter-behaviour-rotate.h ./clutter-behaviour-scale.h ./clutter-binding-pool.h ./clutter-bin-layout.h ./clutter-box.h ./clutter-box-layout.h ./clutter-cairo-texture.h ./clutter-child-meta.h ./clutter-clone.h ./clutter-color.h ./clutter-container.h ./clutter-deprecated.h ./clutter-device-manager.h ./clutter-event.h ./clutter-feature.h ./clutter-fixed.h ./clutter-fixed-layout.h ./clutter-flow-layout.h ./clutter-frame-source.h ./clutter-group.h ./clutter-input-device.h ./clutter-interval.h ./clutter-keysyms.h ./clutter-layout-manager.h ./clutter-layout-meta.h ./clutter-list-model.h ./clutter-main.h ./clutter-media.h ./clutter-model.h ./clutter-path.h ./clutter-rectangle.h ./clutter-score.h ./clutter-script.h ./clutter-scriptable.h ./clutter-shader.h ./clutter-shader-types.h ./clutter-stage.h ./clutter-stage-manager.h ./clutter-stage-window.h ./clutter-texture.h ./clutter-text.h ./clutter-timeline.h ./clutter-timeout-pool.h ./clutter-types.h ./clutter-units.h ./clutter-util.h ../clutter/clutter-version.h ../clutter/clutter-json.h ../clutter/clutter-enum-types.h ../clutter/clutter.h \
  ./clutter-actor.c ./clutter-alpha.c ./clutter-animatable.c ./clutter-animation.c ./clutter-animator.c ./clutter-backend.c ./clutter-behaviour.c ./clutter-behaviour-depth.c ./clutter-behaviour-ellipse.c ./clutter-behaviour-opacity.c ./clutter-behaviour-path.c ./clutter-behaviour-rotate.c ./clutter-behaviour-scale.c ./clutter-bezier.c ./clutter-binding-pool.c ./clutter-bin-layout.c ./clutter-box.c ./clutter-box-layout.c ./clutter-cairo-texture.c ./clutter-child-meta.c ./clutter-clone.c ./clutter-color.c ./clutter-container.c ./clutter-device-manager.c clutter-enum-types.c ./clutter-event.c ./clutter-feature.c ./clutter-fixed.c ./clutter-fixed-layout.c ./clutter-flow-layout.c ./clutter-frame-source.c ./clutter-group.c ./clutter-input-device.c ./clutter-interval.c ./clutter-layout-manager.c ./clutter-layout-meta.c ./clutter-list-model.c ./clutter-main.c clutter-marshal.c ./clutter-master-clock.c ./clutter-media.c ./clutter-model.c ./clutter-path.c ./clutter-rectangle.c ./clutter-score.c ./clutter-script.c ./clutter-script-parser.c ./clutter-scriptable.c ./clutter-shader.c ./clutter-shader-types.c ./clutter-stage.c ./clutter-stage-manager.c ./clutter-stage-window.c ./clutter-texture.c ./clutter-text.c ./clutter-timeline.c ./clutter-timeout-pool.c ./clutter-units.c ./clutter-util.c
Symbol clutter_actor_transform_stage_poin has multiple definition of tag 'note'
Symbol clutter_actor_push_internal has multiple definition of tag '/* internal child'
Symbol SECTION:clutter-alph has multiple definition of tag '"id" '
Symbol SECTION:clutter-animato has multiple definition of tag '"properties" '
Symbol SECTION:clutter-animato has multiple definition of tag '"object" '
Symbol SECTION:clutter-animato has multiple definition of tag '"name" '
Symbol SECTION:clutter-animato has multiple definition of tag '"ease-in" '
Symbol SECTION:clutter-animato has multiple definition of tag '"keys" '
Symbol SECTION:clutter-animato has multiple definition of tag '"object" '
Symbol SECTION:clutter-animato has multiple definition of tag '"name" '
Symbol SECTION:clutter-animato has multiple definition of tag '"ease-in" '
Symbol SECTION:clutter-animato has multiple definition of tag '"keys" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"id" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"type" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"angle-start" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"angle-end" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"axis" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"alpha" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"timeline" '
Symbol SECTION:clutter-scrip has multiple definition of tag '"id" '
Symbol clutter_timeline_clone has multiple definition of tag 'timeline'
Symbol clutter_units_from_string has multiple definition of tag 'units'
Symbol GBindingTransformFunc has multiple definition of tag 'target_value'
ERROR in annotation: can't find parameter n_properies referenced by parameter values of 'animatev'
make[5]: *** [Clutter-1.0.gir] Error 1