X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/00afe3a454119390e78eaaa319a7d05e5e7723ae..2cbd80a5f8a75aa7516a9f0cc467b72c05e94b4a:/m4/putenv.m4

diff --git a/m4/putenv.m4 b/m4/putenv.m4
index b971b1204d..c3c30d8456 100644
--- a/m4/putenv.m4
+++ b/m4/putenv.m4
@@ -1,5 +1,5 @@
-# putenv.m4 serial 19
-dnl Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# putenv.m4 serial 20
+dnl Copyright (C) 2002-2016 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.
@@ -48,3 +48,9 @@ AC_DEFUN([gl_FUNC_PUTENV],
       ;;
   esac
 ])
+
+# Prerequisites of lib/putenv.c.
+AC_DEFUN([gl_PREREQ_PUTENV],
+[
+  AC_CHECK_DECLS([_putenv])
+])