make: add a 'test-ref-configs' target
diff --git a/Makefile b/Makefile
index b73c990..1a1082a 100644
--- a/Makefile
+++ b/Makefile
@@ -52,6 +52,9 @@
 check: lib
 	( cd tests && $(MAKE) && $(MAKE) check )
 
+test-ref-configs:
+	tests/scripts/test-ref-configs.pl
+
 apidoc:
 	mkdir -p apidoc
 	doxygen doxygen/polarssl.doxyfile