ios アーキテクチャ arm64 の未定義シンボル: エラー解決

When using cocoapod to add a third-party library, the project will sometimes open with a compilation error, the error is as follows
 


Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_AFHTTPRequestOperationManager", referenced from:
      objc-class-ref in AFNetworkingUtil.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)


1.

AFNetworkingUtil is a class written by myself, which uses the header file of the AFNetworking framework in the pod


2, there is a compilation error in stackoverflow find this Q&A http://stackoverflow.com/questions/19213782/undefined-symbols-for-architecture-arm64?rq=1


3. Steps to resolve 


  a. Build Setting -> Architectures
 & 
Valid Architectures Check for correct configuration




  b. Make sure the picture is correct, and then add a new image to the
 Build Setting -> 
linking Add the following configuration







1.

AFNetworkingUtil is a class written by myself, which uses the header file of the AFNetworking framework in the pod

2, there is a compilation error in stackoverflow find this Q&A http://stackoverflow.com/questions/19213782/undefined-symbols-for-architecture-arm64?rq=1

3. Steps to resolve 

  a. Build Setting -> Architectures
 & 
Valid Architectures Check for correct configuration


  b. Make sure the picture is correct, and then add a new image to the

 Build Setting -> 

linking Add the following configuration