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diff --git a/gnuradio-runtime/swig/gr_basic_block.i b/gnuradio-runtime/swig/gr_basic_block.i
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+++ b/gnuradio-runtime/swig/gr_basic_block.i
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+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2010 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+class gr_basic_block;
+typedef boost::shared_ptr<gr_basic_block> gr_basic_block_sptr;
+%template(gr_basic_block_sptr) boost::shared_ptr<gr_basic_block>;
+
+%include "pmt_swig.i"
+using namespace pmt;
+
+// support vectors of these...
+namespace std {
+  %template(x_vector_gr_basic_block_sptr) vector<gr_basic_block_sptr>;
+};
+
+class gr_basic_block
+{
+protected:
+    gr_basic_block();
+
+public:
+    virtual ~gr_basic_block();
+    std::string name() const;
+    std::string symbol_name() const;
+    gr_io_signature_sptr input_signature() const;
+    gr_io_signature_sptr output_signature() const;
+    long unique_id() const;
+    gr_basic_block_sptr to_basic_block();
+    bool check_topology (int ninputs, int noutputs);
+    std::string alias();
+    void set_block_alias(std::string name);
+    void _post(pmt_t which_port, pmt_t msg);
+    pmt_t message_ports_in();
+    pmt_t message_ports_out();
+};
+
+%rename(block_ncurrently_allocated) gr_basic_block_ncurrently_allocated;
+long gr_basic_block_ncurrently_allocated();
+
+#ifdef SWIGPYTHON
+%pythoncode %{
+gr_basic_block_sptr.__repr__ = lambda self: "<gr_basic_block %s (%d)>" % (self.name(), self.unique_id ())
+%}
+#endif