iOS微信接入错误解决。~

爆出如下错误

Undefined symbols for architecture arm64，
Undefined symbols for architecture arm64:
  "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)
  "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)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

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加上libc++.dylib 既可解决。~

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