diff --git a/libconfig-1.4.9/stamp-h1 b/libconfig-1.4.9/stamp-h1
new file mode 100644
index 0000000000000000000000000000000000000000..eacafcf1c62cc5a370fce2d0c9610d8a8ee8ecc4
--- /dev/null
+++ b/libconfig-1.4.9/stamp-h1
@@ -0,0 +1 @@
+timestamp for ac_config.h