X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsys_utsname_h.m4;h=bdb54475b9b55ab5ceb40eced5ec4883c44e330b;hb=b7b6d3d99a751f99638ed8e14b62c1cf697f0664;hp=1c528eb45bd8794de2089a7ad8a520def19ac89f;hpb=aa98b1511d40e20a101afe6440b3397bc9d32276;p=gnulib.git

diff --git a/m4/sys_utsname_h.m4 b/m4/sys_utsname_h.m4
index 1c528eb45..bdb54475b 100644
--- a/m4/sys_utsname_h.m4
+++ b/m4/sys_utsname_h.m4
@@ -1,5 +1,5 @@
-# sys_utsname_h.m4 serial 3
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
+# sys_utsname_h.m4 serial 4
+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,
 dnl with or without modifications, as long as this notice is preserved.
@@ -24,6 +24,11 @@ AC_DEFUN([gl_SYS_UTSNAME_H],
       ]])
   fi
   AC_SUBST([HAVE_SYS_UTSNAME_H])
+
+  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 <sys/utsname.h>
+    ]], [uname])
 ])
 
 AC_DEFUN([gl_SYS_UTSNAME_MODULE_INDICATOR],