ld：找不到-lz的库 [英] ld: library not found for -lz

问题描述

这让我发疯，当我尝试在模拟器上编译时，一切正常，但在设备上我收到了这个错误：

This is driving me crazy, when i try to compile on the simulator, everything is ok, but on the device i got this error:

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

请帮助我理解问题的根源：

Please help me understand the source of the problem:

    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：

I did import the libz.1.1.3.dylib framework:

我在Linked框架中获得的唯一libz是 libz.1.1.3.dylib

The only libz that i got in the Linked frameworks is the libz.1.1.3.dylib

推荐答案

您确实指定了库 libz.dylib 在链接框架和库项目而不是直接引用 libz.1.1.3 - 一般情况下你应该使用用于编译的库的最通用版本而不是更具体的版本

You did specify the library libz.dylib in the Linked frameworks and Libraries item rather than the direct reference to libz.1.1.3 - in general you should use the most generic version of a library for compilation rather than a more specific one

其次，请确保 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）。

Secondly, make sure that the libz.dylib is present under the iOS SDK - if it's missing, then it may be a mis-installed SDK (reinstall should fix that).

ie

find /Developer/Platforms -name libz.dylib

应导致的非空输出libz.dylib iPhoneOS5.0.sdk

另请参阅< a href =https://stackoverflow.com/questions/6932991/libz-dylib-versus-libz-1-2-3-dylib-versus-libz-1-2-5-dylib> iPhone - 链接器错误Xcode 4.2预览，这与此类似。

Also see the answer to iPhone - Linker Error in Xcode 4.2 Preview, which is a similar issue to this.

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