X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Fsignal_h.m4;h=7f61e0b4014838c80c80a4cd7307c1364b4018de;hb=b7b6d3d99a751f99638ed8e14b62c1cf697f0664;hp=df6a3ba8682efd540f3f7c901c668166ba36429a;hpb=2adf9eb9d57d54eea767e18b550ee26f70d27dcf;p=gnulib.git

diff --git a/m4/signal_h.m4 b/m4/signal_h.m4
index df6a3ba86..7f61e0b40 100644
--- a/m4/signal_h.m4
+++ b/m4/signal_h.m4
@@ -1,5 +1,5 @@
-# signal_h.m4 serial 8
-dnl Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+# signal_h.m4 serial 9
+dnl Copyright (C) 2007, 2008, 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.
@@ -15,6 +15,12 @@ AC_DEFUN([gl_SIGNAL_H],
 #include <signal.h>
     ]])
   AC_REQUIRE([AC_TYPE_UID_T])
+
+  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 <signal.h>
+    ]], [sigaction sigaddset sigdelset sigemptyset sigfillset sigismember
+    sigpending sigprocmask])
 ])
 
 AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],