objective-c - Mountain Lion 中的 GCDAsyncSocket 问题

Question

我在 Mac (Objective-C) 应用程序中使用 GCDAsyncSocket 类时遇到问题。这是我得到的错误:

Apple Mach-O Linker (Id) Error

Ld "/Users/matthewdahl/Library/Developer/Xcode/DerivedData/Server_Tester-fkkcdricfunsmwcdnerorqdtqetc/
  Build/Products/Debug/Server Tester.app/Contents/MacOS/Server Tester" normal x86_64
    cd "/Volumes/Data/Programming/ControlTouch/P12127/Server Tester"
    setenv MACOSX_DEPLOYMENT_TARGET 10.8

    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch
  x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
  MacOSX10.8.sdk -L/Users/matthewdahl/Library/Developer/Xcode/DerivedData/Server_Tester-
  fkkcdricfunsmwcdnerorqdtqetc/Build/Products/Debug -L/Applications/Xcode.app/Contents/Developer/
  Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/lib/system -F/Users/matthewdahl/Library/
  Developer/Xcode/DerivedData/Server_Tester-fkkcdricfunsmwcdnerorqdtqetc/Build/Products/Debug -filelist 
  "/Users/matthewdahl/Library/Developer/Xcode/DerivedData/Server_Tester-fkkcdricfunsmwcdnerorqdtqetc/
  Build/Intermediates/Server Tester.build/Debug/Server Tester.build/Objects-normal/x86_64/Server 
  Tester.LinkFileList" -mmacosx-version-min=10.8 -fobjc-arc -fobjc-link-runtime -framework Security -
  framework Cocoa -o "/Users/matthewdahl/Library/Developer/Xcode/DerivedData/Server_Tester-
  fkkcdricfunsmwcdnerorqdtqetc/Build/Products/Debug/Server Tester.app/Contents/MacOS/Server Tester"

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

我真的很难理解这里的问题。我尝试删除并重新添加 GCDAsyncSocket.h 和 .m 文件。我已验证所有导入都在导入 .h 文件而不是 .m 文件。我已经清理了项目，甚至尝试从头开始制作一个新项目。任何深入了解可能导致这种情况的原因都会很棒。 (注意:我刚刚升级到 Mountain Lion - 不确定它是否是罪魁祸首)

Answer 1

转到“项目”>“目标”>“构建阶段”>“编译源”。您的所有 .m 文件都在列表中吗？