--- a/samba-3.0.23a/source/Makefile.in	
+++ a/samba-3.0.23a/source/Makefile.in	
@@ -1089,7 +1089,8 @@ bin/libsmbclient.@SHLIBEXT@: $(LIBSMBCLI
 	@echo Linking libsmbclient shared library $@
 	@$(SHLD) $(LDSHFLAGS) -o $@ $(LIBSMBCLIENT_PICOBJS) $(LDFLAGS) $(LIBS) \
 		$(KRB5LIBS) $(LDAP_LIBS) \
-		@SONAMEFLAG@`basename $@`.$(LIBSMBCLIENT_MAJOR)
+		@SONAMEFLAG@`basename $@`.$(LIBSMBCLIENT_MAJOR) \
+		-Wl,-version-script=libsmb/libsmbclient.map
 
 bin/libsmbclient.a: $(LIBSMBCLIENT_PICOBJS)
 	@echo Linking libsmbclient non-shared library $@
--- a/samba-3.0.23a/source/libsmb/libsmbclient.map	
+++ a/samba-3.0.23a/source/libsmb/libsmbclient.map	
@@ -0,0 +1,4 @@ 
+{
+	global: smbc_*;
+	local: *;
+};