[icesik@iceberg gstreamer-0.10]$ ldd -u -r libgstgsm.so
     11005:     ./libgstgsm.so: error: symbol lookup error: undefined symbol:
gst_adapter_peek (continued)
undefined symbol: gst_adapter_peek      (./libgstgsm.so)
     11005:     ./libgstgsm.so: error: symbol lookup error: undefined symbol:
gst_adapter_available (continued)
undefined symbol: gst_adapter_available (./libgstgsm.so)
     11005:     ./libgstgsm.so: error: symbol lookup error: undefined symbol:
gst_adapter_clear (continued)
undefined symbol: gst_adapter_clear     (./libgstgsm.so)
     11005:     ./libgstgsm.so: error: symbol lookup error: undefined symbol:
gst_adapter_new (continued)
undefined symbol: gst_adapter_new       (./libgstgsm.so)
     11005:     ./libgstgsm.so: error: symbol lookup error: undefined symbol:
gst_adapter_flush (continued)
undefined symbol: gst_adapter_flush     (./libgstgsm.so)
     11005:     ./libgstgsm.so: error: symbol lookup error: undefined symbol:
gst_adapter_push (continued)
undefined symbol: gst_adapter_push      (./libgstgsm.so)
[icesik@iceberg gstreamer-0.10]$

[icesik@iceberg gstreamer-0.10]$ rpm -qf libgstgsm.so
gst-plugins-gsm-0.10.4-alt1
[icesik@iceberg gstreamer-0.10]$