下面是我的构建日志。我已经尝试了所有常见的错误修复解决方案：删除构建文件夹、清理、重新启动 Xcode 等。
ld build/Debug-iphonesimulator/SquirrelGame.app/SquirrelGame normal i386 cd /Users/Student/Desktop/SquirrelGame setenv MACOSX_DEPLOYMENT_TARGET 10.6 setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin :/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/g++-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer /SDKs/iPhoneSimulator4.2.sdk -L/Users/Student/Desktop/SquirrelGame/build/Debug-iphonesimulator -F/Users/Student/Desktop/SquirrelGame/build/Debug-iphonesimulator -F/Users/Student/Desktop/SquirrelGame -filelist /Users/Student/Desktop/SquirrelGame/build/SquirrelGame.build/Debug-iphonesimulator/SquirrelGame.build/Objects-normal/i386/SquirrelGame.LinkFileList -mmacosx-version-min=10。6 -all_load -ObjC -Xlinker -objc_abi_version -Xlinker 2 -weak_framework Foundation -weak_framework UIKit -framework CoreGraphics -framework AudioToolbox -framework CFNetwork -framework CoreLocation -weak_framework MapKit -framework QuartzCore -framework Security -framework SystemConfiguration -lsqlite3.0 -framework MediaPlayer -框架 AVFoundation -framework MessageUI -framework MobileCoreServices -framework AddressBook -framework AddressBookUI -weak_framework GameKit -lz.1.2.3 -framework OpenFeint -o /Users/Student/Desktop/SquirrelGame/build/Debug-iphonesimulator/SquirrelGame.app/SquirrelGame应用程序/松鼠游戏应用程序/松鼠游戏3 -framework OpenFeint -o /Users/Student/Desktop/SquirrelGame/build/Debug-iphonesimulator/SquirrelGame.app/SquirrelGame3 -framework OpenFeint -o /Users/Student/Desktop/SquirrelGame/build/Debug-iphonesimulator/SquirrelGame.app/SquirrelGame
ld：在 /Users/Student/Desktop/SquirrelGame/build/SquirrelGame.build/Debug-iphonesimulator/SquirrelGame.build/Objects-normal/i386/SquirrelGameViewController.o 和 /Users/Student/Desktop/SquirrelGame/build/ 中重复符号 _canVirate SquirrelGame.build/Debug-iphonesimulator/SquirrelGame.build/Objects-normal/i386/SquirrelGameAppDelegate.o collect2：ld返回1退出状态命令/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/g++-4.2退出失败代码 1