尝试编译 AFNetworking 2.0 时架构 i386 的未定义符号答案

【问题标题】：Undefined symbols for architecture i386 when trying to compile AFNetworking 2.0尝试编译 AFNetworking 2.0 时架构 i386 的未定义符号
【发布时间】：2013-11-24 12:45:39
【问题描述】：

我将 AFNetworking 2.0 添加到我的项目中。我没有使用 CocoaPods 就做到了——我只是将文件添加到项目中，确保将文件复制到目标。

当我尝试编译项目时，出现以下错误：

Undefined symbols for architecture i386:
  "_SecCertificateCopyData", referenced from:
      _AFCertificateTrustChainForServerTrust in AFSecurityPolicy.o
  "_SecCertificateCreateWithData", referenced from:
      _AFPublicKeyForCertificate in AFSecurityPolicy.o
  "_SecPolicyCreateBasicX509", referenced from:
      _AFPublicKeyForCertificate in AFSecurityPolicy.o
      _AFPublicKeyTrustChainForServerTrust in AFSecurityPolicy.o
  "_SecTrustCopyPublicKey", referenced from:
      _AFPublicKeyForCertificate in AFSecurityPolicy.o
      _AFPublicKeyTrustChainForServerTrust in AFSecurityPolicy.o
  "_SecTrustCreateWithCertificates", referenced from:
      _AFPublicKeyForCertificate in AFSecurityPolicy.o
      _AFPublicKeyTrustChainForServerTrust in AFSecurityPolicy.o
  "_SecTrustEvaluate", referenced from:
      _AFPublicKeyForCertificate in AFSecurityPolicy.o
      _AFServerTrustIsValid in AFSecurityPolicy.o
      _AFPublicKeyTrustChainForServerTrust in AFSecurityPolicy.o
  "_SecTrustGetCertificateAtIndex", referenced from:
      _AFCertificateTrustChainForServerTrust in AFSecurityPolicy.o
      _AFPublicKeyTrustChainForServerTrust in AFSecurityPolicy.o
  "_SecTrustGetCertificateCount", referenced from:
      _AFCertificateTrustChainForServerTrust in AFSecurityPolicy.o
      _AFPublicKeyTrustChainForServerTrust in AFSecurityPolicy.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我的项目有什么问题？

【问题讨论】：

标签： xcode linker afnetworking afnetworking-2 i386

【解决方案1】：

您在项目中缺少的 iOS 框架。我敢打赌，从我看到的名字来看，安全框架就是其中之一。

【讨论】：

【解决方案2】：

#import <Security/Security.h> 在您的 PCH 文件中 + 确保该库位于“Link Binary With Libraries”中。

【讨论】：

【解决方案3】：

只需在您的项目中添加 security.framework。

【讨论】：