iOS Undefined symbols for archit

今天对接了个渠道，里面有支付宝的SDK，然后接完各种报错，报错日志如下：

Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_CTTelephonyNetworkInfo", referenced from:
      objc-class-ref in AlipaySDK
  "_CTRadioAccessTechnologyWCDMA", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyHSDPA", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyHSUPA", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyEdge", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK
  "_CTRadioAccessTechnologyCDMAEVDORevA", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyGPRS", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK
  "_CTRadioAccessTechnologyCDMAEVDORevB", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyeHRPD", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyCDMA1x", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK
  "_CTRadioAccessTechnologyCDMAEVDORev0", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
  "_CTRadioAccessTechnologyLTE", referenced from:
      +[UIDevice(APEX) networkType:] in AlipaySDK
      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

这种各种iOS支付宝的SDK坑问题，很多都是缺少系统库，解决方法如下：

targets-Build Phases-link Binary with libraries添加支付宝依赖的系统库

这些库一定都要用，不然就会各种报错，这样子问题就解决了，希望对大家有帮助！