Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

third_party/aom/build/make/armlink_adapter.sh

@@ -0,0 +1,53 @@
+#!/bin/sh
+## Copyright (c) 2016, Alliance for Open Media. All rights reserved
+##
+## This source code is subject to the terms of the BSD 2 Clause License and
+## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+## was not distributed with this source code in the LICENSE file, you can
+## obtain it at www.aomedia.org/license/software. If the Alliance for Open
+## Media Patent License 1.0 was not distributed with this source code in the
+## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+##
+
+verbose=0
+set -- $*
+for i; do
+    if [ "$i" = "-o" ]; then
+        on_of=1
+    elif [ "$i" = "-v" ]; then
+        verbose=1
+    elif [ "$i" = "-g" ]; then
+        args="${args} --debug"
+    elif [ "$on_of" = "1" ]; then
+        outfile=$i
+        on_of=0
+    elif [ -f "$i" ]; then
+        infiles="$infiles $i"
+    elif [ "${i#-l}" != "$i" ]; then
+        libs="$libs ${i#-l}"
+    elif [ "${i#-L}" != "$i" ]; then
+        libpaths="${libpaths} ${i#-L}"
+    else
+        args="${args} ${i}"
+    fi
+    shift
+done
+
+# Absolutize library file names
+for f in $libs; do
+    found=0
+    for d in $libpaths; do
+        [ -f "$d/$f" ] && infiles="$infiles $d/$f" && found=1 && break
+        [ -f "$d/lib${f}.so" ] && infiles="$infiles $d/lib${f}.so" && found=1 && break
+        [ -f "$d/lib${f}.a" ] && infiles="$infiles $d/lib${f}.a" && found=1 && break
+    done
+    [ $found -eq 0 ] && infiles="$infiles $f"
+done
+for d in $libpaths; do
+    [ -n "$libsearchpath" ] && libsearchpath="${libsearchpath},"
+    libsearchpath="${libsearchpath}$d"
+done
+
+cmd="armlink $args --userlibpath=$libsearchpath --output=$outfile $infiles"
+[ $verbose -eq 1 ] && echo $cmd
+$cmd