第一步：设置-O
Build Settings → Swift Compiler-Code Generation → Optimization Level
Optimize for Speed [-O]
第二步：添加两个.so静态库
General → Linked Frameworks and Libraries
从文件夹中添加libtensorflow.so和libtensorflow_framework.so
/Library/Developer/Toolchains/swift-tensorflow-DEVELOPMENT-2018-04-26-a.xctoolchain/usr/lib/swift/macosx/
第三步：设置Runpath
Build Settings → Linking → Runpath Search Path:
/Library/Developer/Toolchains/swift-tensorflow-DEVELOPMENT-2018-04-26-a.xctoolchain/usr/lib/swift/macosx