微信iOS SDK 1.5 出错 Undefined symbols for architecture xx

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今天测试最新的微信iOS SDK, 仅仅是建了一个空的工程，把sdk加进去运行，就报了以下错误:

Undefined symbols for architecture x86_64:"operator delete[](void*)", referenced from:+[WeChatApiUtil EncodeBase64:] in libWeChatSDK.a(WeChatApiUtil.o)+[WeChatApiUtil NsDataEncodeBase64:] in libWeChatSDK.a(WeChatApiUtil.o)+[WeChatApiUtil DecodeWithBase64:] in libWeChatSDK.a(WeChatApiUtil.o)+[WeChatApiUtil DecodeBase64:] in libWeChatSDK.a(WeChatApiUtil.o)"operator new[](unsigned long)", referenced from:+[WeChatApiUtil EncodeBase64:] in libWeChatSDK.a(WeChatApiUtil.o)+[WeChatApiUtil NsDataEncodeBase64:] in libWeChatSDK.a(WeChatApiUtil.o)+[WeChatApiUtil DecodeWithBase64:] in libWeChatSDK.a(WeChatApiUtil.o)+[WeChatApiUtil DecodeBase64:] in libWeChatSDK.a(WeChatApiUtil.o)"___gxx_personality_v0", referenced from:Dwarf Exception Unwind Info (__eh_frame) in AppDelegate.oDwarf Exception Unwind Info (__eh_frame) in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

开始是怀疑微信sdk不支持xx架构，于是lipo(方法见xCode6制作动态及静态Framework的最后部分)了一下，发现是支持的。以前使用其他第三方的sdk时，也遇到过类似的问题，果断加上libc++.dylib，问题解决。

转自： http://years.im/Home/Article/detail/id/55.html

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