doc: add required python versions

[dpdk.git] / scripts / relpath.sh

diff --git a/scripts/relpath.sh b/scripts/relpath.sh
index 1b1b4b7..4ff4671 100755 (executable)
--- a/scripts/relpath.sh
+++ b/scripts/relpath.sh
@@ -1,14 +1,14 @@
 #!/bin/sh
 
 #   BSD LICENSE
-# 
-#   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+#
+#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 #   All rights reserved.
-# 
+#
 #   Redistribution and use in source and binary forms, with or without
 #   modification, are permitted provided that the following conditions
 #   are met:
-# 
+#
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above copyright
@@ -18,7 +18,7 @@
 #     * Neither the name of Intel Corporation nor the names of its
 #       contributors may be used to endorse or promote products derived
 #       from this software without specific prior written permission.
-# 
+#
 #   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 #   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 #   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -43,8 +43,13 @@ if [ $# -ne 2 ]; then
        exit 1
 fi
 
-REL1=${1#/}
-REL2=${2#/}
+# get the real absolute path, derefencing symlinks
+ABS1=$(readlink -f $1)
+ABS2=$(readlink -f $2)
+
+# remove leading slash
+REL1=${ABS1#/}
+REL2=${ABS2#/}
 
 left1=${REL1%%/*}
 right1=${REL1#*/}
@@ -56,6 +61,8 @@ right2=${REL2#*/}
 prev_right2=$REL2
 prev_left2=
 
+prefix=
+
 while [ "${right1}" != "" -a "${right2}" != "" ]; do
 
        if [ "$left1" != "$left2" ]; then