install-reloc: Support multi-binary installation.

[gnulib.git] / m4 / unistd-safer.m4

diff --git a/m4/unistd-safer.m4 b/m4/unistd-safer.m4
index 894fb71..e65c3c9 100644 (file)
--- a/m4/unistd-safer.m4
+++ b/m4/unistd-safer.m4
@@ -1,17 +1,10 @@
-# unistd-safer.m4 serial 1
-dnl Copyright (C) 2002 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+#serial 9
+dnl Copyright (C) 2002, 2005-2006, 2009-2013 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],
 [
-  gl_PREREQ_DUP_SAFER
-])
-
-# Prerequisites of lib/dup-safer.c.
-AC_DEFUN([gl_PREREQ_DUP_SAFER], [
-  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
+  AC_CHECK_FUNCS_ONCE([pipe])
 ])