我正在做一个 2 年前的项目。这个想法是将它移植到 iPad Mini 和 iPhone 5。但我什至无法在 Xcode 4.5.2 上编译它，我猜它与它所针对的旧 iOS 有关。有人可以帮我理解这个错误信息吗？
ld /Users/luisharo/Library/Developer/Xcode/DerivedData/HomeBroker-dzpamgfducpqanemuwqzgjkjwoka/Build/Products/Debug-iphonesimulator/HomeBroker.app/HomeBroker normal i386 cd /Users/luisharo/Mobiik/GBM/gbm-homebroker-iphone/HomeBroker setenv IPHONEOS_DEPLOYMENT_TARGET 5.1 setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/ bin:/usr/sbin:/sbin" /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/ iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0。sdk -L/Users/luisharo/Library/Developer/Xcode/DerivedData/HomeBroker-dzpamgfducpqanemuwqzgjkjwoka/Build/Products/Debug-iphonesimulator -F/Users/luisharo/Library/Developer/Xcode/DerivedData/HomeBroker-dzpamgfducpqanemuwqzgjkjwoka/Build/Products/ Debug-iphonesimulator -F/Users/luisharo/Mobiik/GBM/gbm-homebroker-iphone/HomeBroker -filelist /Users/luisharo/Library/Developer/Xcode/DerivedData/HomeBroker-dzpamgfducpqanemuwqzgjkjwoka/Build/Intermediates/HomeBroker.build/Debug- iphonesimulator/HomeBroker.build/Objects-normal/i386/HomeBroker.LinkFileList -Xlinker -objc_abi_version -Xlinker 2 -lgcov -fobjc-link-runtime -fprofile-arcs -ftest-coverage -Xlinker -no_implicit_dylibs -mios-simulator-version-min =5。1 -framework MessageUI -framework AudioToolbox -framework SystemConfiguration -framework UIKit -framework Foundation -framework CoreGraphics -framework CoreData -framework QuartzCore -lxml2 -o /Users/luisharo/Library/Developer/Xcode/DerivedData/HomeBroker-dzpamgfducpqanemuwqzgjkjwoka/Build/Products/ Debug-iphonesimulator/HomeBroker.app/HomeBroker
ld：找不到-lgcov clang的库：错误：链接器命令失败，退出代码为1（使用-v查看调用）