我不知道如何调试这个程序，我已经绞尽脑汁好几个小时了。下面是我得到的错误:
Ld /Users/MyAccount/Library/Developer/Xcode/DerivedData/TAC-goimuvevceqxowccylmmpcflbtvz/Build/Products/Debug-iphonesimulator/TAC.app/TAC normal i386
cd "/Users/MyAccount/Desktop/Programming Stuff/iOS Programming/XCode 4/TAC"
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/llvm-gcc-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -L/Users/MyAccount/Library/Developer/Xcode/DerivedData/TAC-goimuvevceqxowccylmmpcflbtvz/Build/Products/Debug-iphonesimulator -L/Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0/Symbols/usr/lib "-L/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/usr/lib" -F/Users/MyAccount/Library/Developer/Xcode/DerivedData/TAC-goimuvevceqxowccylmmpcflbtvz/Build/Products/Debug-iphonesimulator "-F/Users/MyAccount/Desktop/Programming Stuff/iOS Programming/XCode 4/TAC" -filelist /Users/MyAccount/Library/Developer/Xcode/DerivedData/TAC-goimuvevceqxowccylmmpcflbtvz/Build/Intermediates/TAC.build/Debug-iphonesimulator/TAC.build/Objects-normal/i386/TAC.LinkFileList -mmacosx-version-min=10.6 -Xlinker -objc_abi_version -Xlinker 2 -D__IPHONE_OS_VERSION_MIN_REQUIRED=40300 -framework UIKit -framework Foundation -framework CoreGraphics -framework Security -framework CoreMotion -framework SystemConfiguration -framework CFNetwork -framework MobileCoreServices -lxml2.2 -lz.1.2.5 -o /Users/MasonSilber/Library/Developer/Xcode/DerivedData/TAC-goimuvevceqxowccylmmpcflbtvz/Build/Products/Debug-iphonesimulator/TAC.app/TAC
ld: warning: ignoring file /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0/Symbols/usr/lib/libxml2.2.dylib, missing required architecture i386 in file
ld: warning: ignoring file /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0/Symbols/usr/lib/libSystem.dylib, missing required architecture i386 in file
ld: in /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0/Symbols/usr/lib/libobjc.A.dylib, missing required architecture i386 in file for architecture i386
Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/llvm-gcc-4.2 failed with exit code 1
任何帮助都是非常感激的。我通常会花更多的时间来自己解决这个问题，但我真的不知道从哪里开始。
如果您是针对模拟器构建的，那么您明确需要添加i386作为有效的体系结构。同时检查平台下是否有"iphone模拟器"。只需点击您的项目文件，它将在右侧编辑器中显示Build设置。你会在那里找到这些设置。
说明相关库中缺少32位Intel架构
我想问为什么你坚持GCC 4.2当LLVM 2.0是默认的编译器现在和GCC开发已经关闭(在苹果)
尝试切换到LLVM 2.1，看看问题是否仍然存在。
如果使用GCC对你来说很重要，那么你真的需要在Apple Dev论坛上询问这个bug，因为iOS 5和XCode 4.2都是NDA
您忘记添加任何库了。尝试添加一个您所错过的目录。