return sources
 
 
+def swig_version():
+    # It may come on either stdout or stderr, depending on the
+    # version, so read both.
+    i, o, e = os.popen3(SWIG + ' -version', 't')
+    stext = o.read() + e.read()
+    import re
+    match = re.search(r'[0-9]+\.[0-9]+\.[0-9]+$', stext, re.MULTILINE)
+    if not match:
+        raise 'NotFound'
+    SVER = match.group(0)
+    return SVER
+
 
 # Specializations of some distutils command classes
 class wx_smart_install_data(distutils.command.install_data.install_data):
              '-modern',
              '-D'+WXPLAT,
              ] + i_files_includes
+
+if USE_SWIG:
+    SVER = swig_version()
+    if int(SVER[-2:]) >= 29:
+        swig_args += [ '-fastdispatch',
+                       '-fvirtual',
+                       '-fastinit',
+                       '-fastunpack',
+                       #'-outputtuple',  Currently setting this with a -D define above
+                       ]
              
 if UNICODE:
     swig_args.append('-DwxUSE_UNICODE')
         # do a depth first iteration over what's left
         for node in topnode:
             doRename = False
-            doPtr = False
             addWX = False
             revOnly = False
     
                 lastClassName = name = self.GetAttr(node, "name")
                 lastClassSymName = sym_name = self.GetAttr(node, "sym_name")
                 doRename = True
-                doPtr = True
                 if sym_name != name:
                     name = sym_name
                     addWX = True
                 if addWX and not old.startswith('wx'):
                     old = 'wx'+old
                 pyFile.write("%s = wx.%s.%s\n" % (old, modname, new))
-                if doPtr:
-                    pyFile.write("%sPtr = wx.%s.%sPtr\n" % (old, modname, new))
                 
     
     #---------------------------------------------------------------------------