require file

[platform/upstream/automake.git] / m4 / auxdir.m4

diff --git a/m4/auxdir.m4 b/m4/auxdir.m4
index 746cec0..a34f38e 100644 (file)
--- a/m4/auxdir.m4
+++ b/m4/auxdir.m4
@@ -1,8 +1,14 @@
-# AM_AUX_DIR_EXPAND
+# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
+
+# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
 
 # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
-# $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
-# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
+# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
+# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
 #
 # Of course, Automake must honor this variable whenever it calls a
 # tool from the auxiliary directory.  The problem is that $srcdir (and
@@ -21,7 +27,7 @@
 #
 # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
 # are both prefixed by $srcdir.  In an in-source build this is usually
-# harmless because $srcdir is `.', but things will broke when you
+# harmless because $srcdir is '.', but things will broke when you
 # start a VPATH build or use an absolute $srcdir.
 #
 # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
@@ -38,7 +44,9 @@
 # absolute PATH.  The drawback is that using absolute paths prevent a
 # configured tree to be moved without reconfiguration.
 
-AC_DEFUN([AM_AUX_DIR_EXPAND], [
+AC_DEFUN([AM_AUX_DIR_EXPAND],
+[dnl Rely on autoconf to set up CDPATH properly.
+AC_PREREQ([2.50])dnl
 # expand $ac_aux_dir to an absolute path
-am_aux_dir=`CDPATH=:; cd $ac_aux_dir && pwd`
+am_aux_dir=`cd $ac_aux_dir && pwd`
 ])