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here is the error description:

Undefined symbols for architecture x86_64: "_verify", referenced from: _HIDGetDeviceInfo in HIDUtilities.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

It happened after upgrade Xcode to version 9.1 HIDUtilities.o is not third-party SDK, HIDUtilities.h and HIDUtilities.c are files in my project.

Any suggestion is appreciated, thanks in advance.

Hasan Ali
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gao
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  • Possible duplicate of [Xcode - symbol(s) not found for architecture x86\_64 (iOS Lib)](https://stackoverflow.com/questions/24346637/xcode-symbols-not-found-for-architecture-x86-64-ios-lib) – Tamás Sengel Nov 14 '17 at 10:31
  • nope, it's different with that, thanks all the same. – gao Nov 15 '17 at 02:24

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