# HG changeset patch
# User Eric Blake <ebb9@byu.net>
# Date 1153974951 0
# Node ID 8a261680f8cabb0083c9ec77ac7a527007e01a8f
# Parent  9c66c4fabeafffa0c23698fc8f6c15e10499664e
* unistd-safer.m4 (gl_UNISTD_SAFER): Check for missing pipe.

diff --git a/m4/ChangeLog b/m4/ChangeLog
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,7 @@
+2006-07-26  Eric Blake  <ebb9@byu.net>
+
+	* unistd-safer.m4 (gl_UNISTD_SAFER): Check for missing pipe.
+
 2006-07-26  Bruno Haible  <bruno@clisp.org>
 
 	* stdint.m4 (gl_STDINT_H): Also verify the existence of the macros
diff --git a/m4/unistd-safer.m4 b/m4/unistd-safer.m4
--- a/m4/unistd-safer.m4
+++ b/m4/unistd-safer.m4
@@ -1,11 +1,12 @@
-#serial 7
-dnl Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+#serial 8
+dnl Copyright (C) 2002, 2005, 2006 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.
 
 AC_DEFUN([gl_UNISTD_SAFER],
 [
+  AC_CHECK_FUNCS_ONCE([pipe])
   AC_LIBSOURCES([dup-safer.c, fd-safer.c, pipe-safer.c, unistd-safer.h, unistd--.h])
   AC_LIBOBJ([dup-safer])
   AC_LIBOBJ([fd-safer])