苹果要求2月1号后所有上传APP必须支持arm64，我们公司之前的项目是用cocos2dx-2.2.1开发的，并不支持arm64，按照网上的建议 http://www.cnblogs.com/mrblue/p/4271612.html修改后又出现了下面的问题：
Undefined symbols for architecture arm64:
“cocos2d::CCThread::~CCThread()”, referenced from:
NetRecvThread::run(void*) in libSingleEye_ARMV7.a(NetRecvThread.o)
NetSendThread::run(void*) in libSingleEye_ARMV7.a(NetSendThread.o)
“cocos2d::CCEaseElasticOut::create(cocos2d::CCActionInterval*)”, referenced from:
FightLayer::resetTrayPos() in FightScene.o
“cocos2d::CCProgressFromTo::create(float, float, float)”, referenced from:
FightLayer::updateEnergy(cocos2d::CCPoint) in FightScene.o
“cocos2d::CCJumpTo::create(float, cocos2d::CCPoint const&, float, int)”, referenced from:
FightLayer::createNewBullet() in FightScene.o
“cocos2d::CCCallFuncO::create(cocos2d::CCObject*, void (cocos2d::CCObject::)(cocos2d::CCObject), cocos2d::CCObject*)”, referenced from:
FightLayer::createNewBullet() in FightScene.o
“cocos2d::CCDirector::getContentScaleFactor()”, referenced from:
FightLayer::draw() in FightScene.o
有没高手知道如何解决这个问题？如果将引擎升级到2.2.6又有不少接口变了，很多功能都要重新实现，工作量太大了，还有没有别的方法？