ios - 尝试构建我的 xcode 项目时出现 GTMSessionFetcherService 链接器错误

Question

我正在使用 Cocoapods 安装最新的 GPG，并使用了最新的 XCode 7.3 和 iOS SDK 9.3，但我无法构建我的项目，并遇到了这 5 个我无法解决的链接器错误:

 "_OBJC_CLASS_$_GSDK_GTMSessionFetcherService", referenced from:
      objc-class-ref in gpg(GIPNetworkImage.o)
   objc-class-ref in libSignIn_external.a(GIDSignIn.o)

  "_GSDK_kGTMSessionFetcherStatusDomain", referenced from:
      -[GSDK_GTMOAuth2SignIn authCodeObtained] in libGTMOAuth2_external_external.a(GTMOAuth2SignIn.o)
  "_GSDK_GTMSessionFetcherAssertValidSelector", referenced from:
      -[GSDK_GTMOAuth2Authentication authorizeRequest:delegate:didFinishSelector:] in libGTMOAuth2_external_external.a(GTMOAuth2Authentication.o)
      -[GSDK_GTMOAuth2SignIn initWithAuthentication:authorizationURL:delegate:webRequestSelector:finishedSelector:] in libGTMOAuth2_external_external.a(GTMOAuth2SignIn.o)
  "_OBJC_CLASS_$_GSDK_GTMSessionFetcher", referenced from:
      objc-class-ref in libGTMOAuth2_internal_external.a(GTMOAuth2SignInInternal.o)
      objc-class-ref in libGTMOAuth2_external_external.a(GTMOAuth2Authentication.o)
      objc-class-ref in libGTMOAuth2_external_external.a(GTMOAuth2SignIn.o)
      objc-class-ref in gpg(GPGClearcutLogger.o)
      objc-class-ref in libSignIn_external.a(GIDSignIn.o)
      objc-class-ref in libSignIn_external.a(GIDRuntimeConfigFetcher.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我什至尝试在我的项目中添加 GTMSessionFetcherService 源，但似乎无法解决这个问题。有什么想法吗？

谢谢

Answer 1

我在尝试集成 Google 登录时遇到了一个非常相似的构建问题。 non-Cocoapods instructions提到将 GoogleSignIn.framework 添加到您的项目，但他们没有告诉您您还需要链接登录 SDK 中的其余框架:

GoogleAppUtilities.framework
GoogleAuthUtilities.framework
GoogleNetworkingUtilities.framework
GoogleSignIn.framework
GoogleSymbolUtilities.framework
GoogleUtilities.framework