3 files changed, 106 insertions, 6 deletions
diff --git a/gruel/src/swig/Makefile.am b/gruel/src/swig/Makefile.am
index 294045567..3261e47c2 100644
--- a/gruel/src/swig/Makefile.am
+++ b/gruel/src/swig/Makefile.am
@@ -30,9 +30,6 @@ AM_CPPFLAGS = \
 	$(PYTHON_CPPFLAGS) \
 	$(WITH_INCLUDES)
 
-TOP_SWIG_IFILES =		\
-	pmt_swig.i
-
 ##############################
 # SWIG interface and library
 TOP_SWIG_IFILES = \
@@ -50,6 +47,6 @@ pmt_swig_la_swig_libadd = \
 	$(abs_top_builddir)/gruel/src/lib/pmt/libpmt.la
 
 # additional SWIG files to be installed
-pmt_swig_swiginclude_headers = 
-
+pmt_swig_swiginclude_headers =  \
+	gr_intrusive_ptr.i
 
diff --git a/gruel/src/swig/gr_intrusive_ptr.i b/gruel/src/swig/gr_intrusive_ptr.i
new file mode 100644
index 000000000..eef5bc84d
--- /dev/null
+++ b/gruel/src/swig/gr_intrusive_ptr.i
@@ -0,0 +1,102 @@
+// This file was borrowed from the SWIG project to allow use to 
+// wrap PMTs that use intrusive pointers. This is only necessary
+// to support backwards compatability with older distributions of
+// Linux that do not natively support a new enough version of SWIG.
+// We do this to prevent having to update our dependency on a new
+// SWIG. Eventually, the need for this should go away.
+
+// Allow for different namespaces for shared_ptr / intrusive_ptr - they could be boost or std or std::tr1
+// For example for std::tr1, use:
+// #define SWIG_SHARED_PTR_NAMESPACE std
+// #define SWIG_SHARED_PTR_SUBNAMESPACE tr1
+// #define SWIG_INTRUSIVE_PTR_NAMESPACE boost
+// #define SWIG_INTRUSIVE_PTR_SUBNAMESPACE 
+
+#if !defined(SWIG_INTRUSIVE_PTR_NAMESPACE)
+# define SWIG_INTRUSIVE_PTR_NAMESPACE boost
+#endif
+
+#if defined(SWIG_INTRUSIVE_PTR_SUBNAMESPACE)
+# define SWIG_INTRUSIVE_PTR_QNAMESPACE SWIG_INTRUSIVE_PTR_NAMESPACE::SWIG_INTRUSIVE_PTR_SUBNAMESPACE
+#else
+# define SWIG_INTRUSIVE_PTR_QNAMESPACE SWIG_INTRUSIVE_PTR_NAMESPACE
+#endif
+
+namespace SWIG_INTRUSIVE_PTR_NAMESPACE {
+#if defined(SWIG_INTRUSIVE_PTR_SUBNAMESPACE)
+  namespace SWIG_INTRUSIVE_PTR_SUBNAMESPACE {
+#endif
+    template <class T> class intrusive_ptr {
+    };
+#if defined(SWIG_INTRUSIVE_PTR_SUBNAMESPACE)
+  }
+#endif
+}
+
+%fragment("SWIG_intrusive_deleter", "header") {
+template<class T> struct SWIG_intrusive_deleter {
+    void operator()(T *p) {
+        if (p) 
+          intrusive_ptr_release(p);
+    }
+};
+}
+
+%fragment("SWIG_null_deleter", "header") {
+struct SWIG_null_deleter {
+  void operator() (void const *) const {
+  }
+};
+%#define SWIG_NO_NULL_DELETER_0 , SWIG_null_deleter()
+%#define SWIG_NO_NULL_DELETER_1
+}
+
+// Main user macro for defining intrusive_ptr typemaps for both const and non-const pointer types
+// For plain classes, do not use for derived classes
+%define SWIG_INTRUSIVE_PTR(PROXYCLASS, TYPE...)
+SWIG_INTRUSIVE_PTR_TYPEMAPS(PROXYCLASS, , TYPE)
+SWIG_INTRUSIVE_PTR_TYPEMAPS(PROXYCLASS, const, TYPE)
+%enddef
+
+// Main user macro for defining intrusive_ptr typemaps for both const and non-const pointer types
+// For derived classes
+%define SWIG_INTRUSIVE_PTR_DERIVED(PROXYCLASS, BASECLASSTYPE, TYPE...)
+SWIG_INTRUSIVE_PTR_TYPEMAPS(PROXYCLASS, , TYPE)
+SWIG_INTRUSIVE_PTR_TYPEMAPS(PROXYCLASS, const, TYPE)
+%types(SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< TYPE > = SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< BASECLASSTYPE >) %{
+  *newmemory = SWIG_CAST_NEW_MEMORY;
+  return (void *) new SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< BASECLASSTYPE >(*(SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< TYPE > *)$from);
+  %}
+%extend TYPE {
+  static SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< BASECLASSTYPE > SWIGSharedPtrUpcast(SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< TYPE > swigSharedPtrUpcast) {
+    return swigSharedPtrUpcast;
+  }
+}
+%enddef
+
+// Extra user macro for including classes in intrusive_ptr typemaps for both const and non-const pointer types
+// This caters for classes which cannot be wrapped by intrusive_ptrs but are still part of the class hierarchy
+// For plain classes, do not use for derived classes
+%define SWIG_INTRUSIVE_PTR_NO_WRAP(PROXYCLASS, TYPE...)
+SWIG_INTRUSIVE_PTR_TYPEMAPS_NO_WRAP(PROXYCLASS, , TYPE)
+SWIG_INTRUSIVE_PTR_TYPEMAPS_NO_WRAP(PROXYCLASS, const, TYPE)
+%enddef
+
+// Extra user macro for including classes in intrusive_ptr typemaps for both const and non-const pointer types
+// This caters for classes which cannot be wrapped by intrusive_ptrs but are still part of the class hierarchy
+// For derived classes
+%define SWIG_INTRUSIVE_PTR_DERIVED_NO_WRAP(PROXYCLASS, BASECLASSTYPE, TYPE...)
+SWIG_INTRUSIVE_PTR_TYPEMAPS_NO_WRAP(PROXYCLASS, , TYPE)
+SWIG_INTRUSIVE_PTR_TYPEMAPS_NO_WRAP(PROXYCLASS, const, TYPE)
+%types(SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< TYPE > = SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< BASECLASSTYPE >) %{
+  *newmemory = SWIG_CAST_NEW_MEMORY;
+  return (void *) new SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< BASECLASSTYPE >(*(SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< TYPE > *)$from);
+%}
+%extend TYPE {
+  static SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< BASECLASSTYPE > SWIGSharedPtrUpcast(SWIG_SHARED_PTR_QNAMESPACE::shared_ptr< TYPE > swigSharedPtrUpcast) {
+    return swigSharedPtrUpcast;
+  }
+}
+%enddef
+
+
diff --git a/gruel/src/swig/pmt_swig.i b/gruel/src/swig/pmt_swig.i
index 6435e03cc..3b0eb45c8 100644
--- a/gruel/src/swig/pmt_swig.i
+++ b/gruel/src/swig/pmt_swig.i
@@ -38,7 +38,8 @@ using namespace pmt;
 
 // Template intrusive_ptr for Swig to avoid dereferencing issues
 class pmt_base;
-%import <intrusive_ptr.i>
+//%import <intrusive_ptr.i>
+%import <gr_intrusive_ptr.i>
 %template(swig_int_ptr) boost::intrusive_ptr<pmt_base>;
 
 typedef boost::intrusive_ptr<pmt_base> pmt_t;