设置如下参数：
Standard architectures(armv7,armv7s)
$(ARCHS_STANDARD_32_BIT)
设置方法如下：
http://blog.csdn.net/remote_roamer/article/details/22100253
http://blog.csdn.net/jimjarry/article/details/8000668
http://www.360doc.com/content/13/1102/09/2036337_326014723.shtml
原文：http://www.cnblogs.com/ygm900/p/3732724.html