--- src/Makefile.dynamic.orig	2009-03-18 19:59:33.000000000 -0700
+++ src/Makefile.dynamic	2009-03-18 20:21:12.000000000 -0700
@@ -13,7 +13,7 @@
 	cp $(DY_LIBNAME) $(LIBDIR)/
 
 $(SO_LIBNAME): $(A_LIBNAME)
-	$(CXX) $(SO_OPTS)  $(A_LIBNAME) $(OBJS) -o $(SO_LIBNAME) $(NTLLFLAGS) $(LIBFLAGS)
+	$(CXX) $(SO_OPTS)  $(A_LIBNAME) $(OBJS) -o $(SO_LIBNAME) $(NTLLFLAGS) $(LIBFLAGS) -Wl,-soname,$(SO_LIBNAME).__SO_VERSION__
 install_$(SO_LIBNAME), install_so: $(SO_LIBNAME)
 	cp $(SO_LIBNAME) $(LIBDIR)/