[build]: Add build script for arm64

Change-Id: I4ed1b62ce5baeb21fd8e9fb0d804d48f8d065698
Signed-off-by: Herman Chen <herman.chen@rock-chips.com>

build/linux/aarch64/arm.linux.cross.cmake

@@ -0,0 +1,12 @@
+
+cmake_minimum_required( VERSION 2.6.3 )
+
+SET(CMAKE_SYSTEM_NAME Linux)
+SET(CMAKE_C_COMPILER "aarch64-linux-gnu-gcc")
+SET(CMAKE_CXX_COMPILER "aarch64-linux-gnu-g++")
+#SET(CMAKE_SYSTEM_PROCESSOR "armv7-a")
+SET(CMAKE_SYSTEM_PROCESSOR "armv8")
+
+add_definitions(-fPIC)
+add_definitions(-DARMLINUX)
+

build/linux/aarch64/make-Makefiles.bash

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Run this from within a bash shell
+
+set +e
+
+MPP_PWD=`pwd`
+MPP_TOP=${MPP_PWD}/../../..
+
+# toolchain detection
+check_cmd(){
+    "$@" >> /dev/null 2>&1
+}
+check_system_arm_linux_gcc(){
+    check_cmd aarch64-linux-gnu-gcc -v
+}
+
+check_system_arm_linux_gcc
+if [ $? -eq 127 ];then
+    MPP_TOOLCHAIN=/usr/bin
+    export PATH=$PATH:${MPP_TOOLCHAIN}
+fi
+
+# generate Makefile
+cmake -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_TOOLCHAIN_FILE=./arm.linux.cross.cmake \
+      -DCMAKE_RKPLATFORM_ENABLE=ON \
+      -G "Unix Makefiles" \
+      ${MPP_TOP}