Add library paths and rlink-paths for directories in the sysroot.

build/linux/sysroot_ld_path.sh

+#!/bin/sh
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Reads etc/ld.so.conf.d/*.conf and returns the appropriate linker flags.
+#
+#  sysroot_ld_path.sh /abspath/to/sysroot
+#
+
+if [ $# -ne 1 ]; then
+  echo $0 /abspath/to/sysroot
+  exit 1
+fi
+
+echo $1 | grep -qs ' '
+if [ $? -eq 0 ]; then
+  echo $1 contains whitespace.
+  exit 1
+fi
+
+for entry in $(cat $1/etc/ld.so.conf.d/*.conf | grep ^/)
+do
+  entry=$1$entry
+  echo -L$entry
+  echo -Wl,-rpath-link=$entry
+done | xargs echo