moduhashlib: Initial module skeleton.
diff --git a/py/mpconfig.h b/py/mpconfig.h
index 0c214bb..f4f9986 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -435,6 +435,10 @@
 #define MICROPY_PY_UHEAPQ (0)
 #endif
 
+#ifndef MICROPY_PY_UHASHLIB
+#define MICROPY_PY_UHASHLIB (0)
+#endif
+
 /*****************************************************************************/
 /* Hooks for a port to add builtins                                          */