X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=m4%2Flanginfo_h.m4;h=a4c5409dd047f25b6404a9bb0776d4070c4c32c7;hb=cbd5934b1918d73022d1d1d9904112f3d6d7f187;hp=46be299ef39496f62a14ed879657da16764b272c;hpb=b4349b948ba2c352187158e241334abda6e473e9;p=pspp

diff --git a/m4/langinfo_h.m4 b/m4/langinfo_h.m4
index 46be299ef3..a4c5409dd0 100644
--- a/m4/langinfo_h.m4
+++ b/m4/langinfo_h.m4
@@ -1,4 +1,4 @@
-# langinfo_h.m4 serial 2
+# langinfo_h.m4 serial 3
 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,
@@ -51,6 +51,11 @@ int a = ERA;
   AC_SUBST([HAVE_LANGINFO_H])
   AC_SUBST([HAVE_LANGINFO_CODESET])
   AC_SUBST([HAVE_LANGINFO_ERA])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <langinfo.h>
+    ]], [nl_langinfo])
 ])
 
 AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],