ios - Xcode:构建失败:错误消息

Question

我正在构建并运行我的 Xcode 应用程序，但由于以下错误消息，我收到一条构建失败消息:

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_SFAccountManager", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_SFApplication", referenced from:
      objc-class-ref in main.o
  "_OBJC_CLASS_$_SFAuthenticationManager", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_SFLogger", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_SFRestAPI", referenced from:
      objc-class-ref in OrderVC.o
      objc-class-ref in PerformanceVC.o
      objc-class-ref in CustomerDetailsVC.o
      objc-class-ref in AppDelegate.o
  "_kSFLoginHostChangedNotification", referenced from:
      -[AppDelegate init] in AppDelegate.o
      -[AppDelegate dealloc] in AppDelegate.o
  "_kSFUserLogoutNotification", referenced from:
      -[AppDelegate init] in AppDelegate.o
      -[AppDelegate dealloc] in AppDelegate.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我该如何解决这个/这些问题？

Answer 1

我会在您的项目中将Architectures 设置为$(ARCHS_STANDARD_32_BIT)，这对iOS 构建和OS X/模拟器构建都是正确的。

问题是您的库不是为 x86_64 构建的，但您的项目试图同时为 i386 和 x86_64 构建，因此链接步骤失败。 Apple 更改了 Xcode 5.1 中的默认架构以包含 64 位架构。

有关更多信息，请参阅这些其他问题:

• > Xcode Mach-O Linker errors with 64-bit simulator
• > Missing X86 code in iOS build?