--- build_ext.py	2006-05-26 14:23:12.000000000 +0200
+++ Copy of build_ext.py	2007-04-24 10:46:52.783768000 +0200
@@ -524,7 +524,7 @@
         if self.swig_cpp:
             log.warn("--swig-cpp is deprecated - use --swig-opts=-c++")
 
-        if self.swig_cpp or ('-c++' in self.swig_opts):
+        if self.swig_cpp or ('-c++' in self.swig_opts) or ('-c++' in extension.swig_opts):
             target_ext = '.cpp'
         else:
             target_ext = '.c'