objective-c – ld：找不到-lz的库

这让我发疯,当我尝试在模拟器上编译时,一切都很好,但在设备上我得到了这个错误：

ld: library not found for -lz
Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang Failed with exit code 1

请帮我理解问题的根源：

Ld /Users/ZConsulting/Library/Developer/Xcode/DerivedData/Fontenay-sous-Bois-dhlecgdgtoldsadoctkyueriyius/Build/Products/Debug-iphoneos/Fontenay-sous-Bois.app/Fontenay-sous-Bois normal armv7
        cd /Users/ZConsulting/Desktop/Fontenay-sous-Bois
        setenv IPHONEOS_DEPLOYMENT_TARGET 5.0
        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/Users/ZConsulting/Library/Developer/Xcode/DerivedData/Fontenay-sous-Bois-dhlecgdgtoldsadoctkyueriyius/Build/Products
/Debug-iphoneos -F/Users/ZConsulting/Library/Developer/Xcode/DerivedData/Fontenay-sous-Bois-dhlecgdgtoldsadoctkyueriyius/Build/Products/Debug-iphoneos -F/Developer/Platforms/iPhoneOS.platform/Developer/SDKs
/iPhoneOS5.0.sdk/Developer/Library/Frameworks -filelist /Users/ZConsulting/Library/Developer/Xcode/DerivedData/Fontenay-sous-Bois-dhlecgdgtoldsadoctkyueriyius/Build/Intermediates/Fontenay-sous-Bois.build/Debug-iphoneos/Fontenay-sous-Bois.build/Objects-normal/armv7/Fontenay-sous-Bois.LinkFileList -dead_strip -fobjc-arc -miphoneos-version-min=5.0 -framework SenTestingKit -lz -lz.1.1.3 -framework MobileCoreServices
 -framework SystemConfiguration -framework CFNetwork -framework CoreLocation -framework MapKit -framework UIKit -framework Foundation -framework CoreGraphics -o /Users/ZConsulting/Library/Developer/Xcode/DerivedData/Fontenay-sous-Bois-dhlecgdgtoldsadoctkyueriyius/Build/Products/Debug-iphoneos/Fontenay-sous-Bois.app/Fontenay-sous-Bois

编辑：

我确实导入了libz.1.1.3.dylib框架：

我在Linked框架中获得的唯一libz是libz.1.1.3.dylib

解决方法

您确实在Linked frameworks和Libraries项中指定了库libz.dylib,而不是直接引用libz.1.1.3 – 通常您应该使用库的最通用版本进行编译而不是更具体的库

其次,确保libz.dylib存在于iOS SDK下 – 如果缺少,则可能是错误安装的SDK(重新安装应该修复).

即

find /Developer/Platforms -name libz.dylib

应该导致iPhoneOS5.0.sdk下libz.dylib的非空输出

另请参阅iPhone – Linker Error in Xcode 4.2 Preview的答案,这与此类似.