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diff --git a/m4/dirent-safer.m4 b/m4/dirent-safer.m4
new file mode 100644
index 00000000..c48f3dc8
--- /dev/null
+++ b/m4/dirent-safer.m4
@@ -0,0 +1,11 @@
+#serial 1
+dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_DIRENT_SAFER],
+[
+  AC_CHECK_FUNCS_ONCE([fdopendir])
+  AC_LIBOBJ([opendir-safer])
+])