X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/acfa068f4a1a4652b784af1d7aaac92929399249..68cb71c0928eb8b10487a125192f43923e8bfe7f:/m4/sys_types_h.m4

diff --git a/m4/sys_types_h.m4 b/m4/sys_types_h.m4
index f11eef2fe8..b0aabb4786 100644
--- a/m4/sys_types_h.m4
+++ b/m4/sys_types_h.m4
@@ -1,10 +1,10 @@
-# sys_types_h.m4 serial 4
-dnl Copyright (C) 2011-2012 Free Software Foundation, Inc.
+# sys_types_h.m4 serial 5
+dnl Copyright (C) 2011-2016 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_SYS_TYPES_H],
+AC_DEFUN_ONCE([gl_SYS_TYPES_H],
 [
   AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
   gl_NEXT_HEADERS([sys/types.h])