更新到 xcode 4.2 和 ios5 后编译错误

Question

我有一个项目在 xcode 4 上运行得很好，我更新到 4.2 和 ios5，但现在它无法编译！ 我得到：

Ld "build/Debug-iphoneos/Send Video.app/Send Video" normal armv7
cd "/Volumes/Untitled 1/iOS/projects/SharedMomentsApp"
setenv IPHONEOS_DEPLOYMENT_TARGET 4.0
setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang++ -arch armv7 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk "-L/Volumes/Untitled 1/iOS/projects/SharedMomentsApp/build/Debug-iphoneos" "-L/Volumes/Untitled 1/iOS/projects/SharedMomentsApp/SharedMomentsApp" "-L/Volumes/Untitled 1/iOS/projects/SharedMomentsApp" "-L/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.5 (8L1)/Symbols/usr/lib" "-F/Volumes/Untitled 1/iOS/projects/SharedMomentsApp/build/Debug-iphoneos" -filelist "/Volumes/Untitled 1/iOS/projects/SharedMomentsApp/build/SharedMomentsApp.build/Debug-iphoneos/SharedMomentsApp.build/Objects-normal/armv7/Send Video.LinkFileList" -dead_strip /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib/libxml2.2.dylib -miphoneos-version-min=4.0 -lz -lxml2.2 -framework AssetsLibrary -framework CoreMedia -framework AVFoundation -framework CoreLocation -framework MapKit -framework QuartzCore -framework AddressBookUI -framework AddressBook -framework SystemConfiguration -framework MediaPlayer -framework MobileCoreServices -lsqlite3.0 -framework UIKit -framework Foundation -framework CoreGraphics -framework CoreData -o "/Volumes/Untitled 1/iOS/projects/SharedMomentsApp/build/Debug-iphoneos/Send Video.app/Send Video"

Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang++ failed with exit code 1

还有其他人以前遇到过此类问题吗？

Answer 1

尝试删除派生数据：
转到管理器并选择顶部的项目。 “派生数据”项目右侧有一个删除按钮。