Question

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

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

修改

我确实导入了libz.1.1.3.dylib框架： enter image description here

我在Linked框架中获得的唯一libz是libz.1.1.3.dylib enter image description here

Answer 1

您确实在libz.dylib项目中指定了库Linked frameworks and Libraries，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一个

其次，确保iOS SDK下方存在libz.dylib - 如果缺少，则可能是错误安装的SDK（重新安装应修复）。

即

find /Developer/Platforms -name libz.dylib

应导致libz.dylib

下iPhoneOS5.0.sdk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。

Answer 2

我在不同的库中遇到了同样的错误：

ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)

在search paths - ＆gt;下解决此问题user header search paths - ＆gt; release我说：

"$(BUILD_ROOT)/../IntermediateBuildFilesPath/UninstalledProducts/include"

请记住，我只有在存档时才会收到此错误，并且我的存档是基于我的发布方案..

<强>更新我在lpods库（即cocoapods）遇到了同样的问题（在不同的场合/项目中）..我想出来解决这个问题的方法是通过认识到我的development上的构建工作正常计划，但不是我的debug计划。基本上development方案对build active architectures only有否，而debug有肯定。我只是在所有 cocoapods下的目标中将debug更改为否

ld：找不到-lz的库

2 个答案: