X-Git-Url: https://git.hcoop.net/bpt/emacs.git/blobdiff_plain/21733e4f154f8830fa568a347a0d6dbd59793c2b..8d3655be5a5c41b1f0a9985bcdb614693fce67e5:/m4/putenv.m4

diff --git a/m4/putenv.m4 b/m4/putenv.m4
index 9de53527a7..c33b5b5170 100644
--- a/m4/putenv.m4
+++ b/m4/putenv.m4
@@ -1,4 +1,4 @@
-# putenv.m4 serial 19
+# putenv.m4 serial 20
 dnl Copyright (C) 2002-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -48,3 +48,9 @@ AC_DEFUN([gl_FUNC_PUTENV],
       ;;
   esac
 ])
+
+# Prerequisites of lib/putenv.c.
+AC_DEFUN([gl_PREREQ_PUTENV],
+[
+  AC_CHECK_DECLS([_putenv])
+])