diff --git a/package/stf/rte/rte.conf b/package/stf/rte/rte.conf
new file mode 100644
index 000000000..40a35dab6
--- /dev/null
+++ b/package/stf/rte/rte.conf
@@ -0,0 +1,3 @@
+
+# without this .so is missing...
+export shared_ext=".so"