Undefined symbols for architecture arm64:

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本文介绍了解决在iOS应用开发过程中遇到的“Undefined symbols for architecture arm64”错误的方法。通过调整项目的架构设置，将架构从arm64更改为标准架构（armv7, armv7s），并相应地更新有效架构。

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Undefined symbols for architecture arm64:

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Undefined symbols for architecture arm64:

解决：

project -> target (your project name) -> build settings and change architectures to standard architectures (armv7, armv7s), and valid architectures to
armv7, armv7s.

参考：http://stackoverflow.com/questions/19213782/undefined-symbols-for-architecture-arm64