XCode - ld：找不到 -lfile_vacuum 的库答案

【问题标题】：XCode - ld: library not found for -lfile_vacuumXCode - ld：找不到 -lfile_vacuum 的库
【发布时间】：2020-11-25 18:58:08
【问题描述】：

我在我的项目中添加了一个 CocoaPod (SwiftySandboxFileAccess)，现在我收到以下错误：

Ld /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Products/Debug/FileVacuum.app/Contents/MacOS/FileVacuum normal x86_64 (in target 'FileVacuum' from project 'FileVacuum')
    cd /Users/mike/Documents/Mikeumus/code/FileVacuum/menubar-filevacuum
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -target x86_64-apple-macos10.15 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -L/Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Products/Debug -L. -LCarthage -LFileVacuum -LFileVacuum.xcworkspace -LFileVacuumLauncher2 -LFileVacuumTests -LFileVacuumUITests -LMenubar-FileVacuumTests -LMenubar-FileVacuumUITests -LPods -LCarthage/Build -LCarthage/Checkouts -LFileVacuum/FileVacuum\ 2020-06-08\ 11-57-59 -LFileVacuum/FileVacuum.xcarchive -LFileVacuum/Pods -LFileVacuum.xcworkspace/xcshareddata -LFileVacuum.xcworkspace/xcuserdata -LPods/Headers -LPods/Local\ Podspecs -LPods/SwiftySandboxFileAccess -LPods/Target\ Support\ Files -LCarthage/Build/Mac -LCarthage/Build/iOS -LCarthage/Checkouts/AppReceiptValidator -LFileVacuum/FileVacuum.xcarchive/Products -LFileVacuum/FileVacuum.xcarchive/SwiftSupport -LFileVacuum/Pods/Headers -LFileVacuum/Pods/Local\ Podspecs -LFileVacuum/Pods/Target\ Support\ Files -LFileVacuum.xcworkspace/xcshareddata/swiftpm -LFileVacuum.xcworkspace/xcuserdata/mike.xcuserdatad -LPods/Headers/Public -LPods/SwiftySandboxFileAccess/SwiftySandboxFileAccess -LPods/Target\ Support\ Files/Pods-FileVacuum -LPods/Target\ Support\ Files/SwiftySandboxFileAccess -LCarthage/Build/Mac/AppReceiptValidator.framework.dSYM -LCarthage/Build/iOS/AppReceiptValidator.framework.dSYM -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator -LFileVacuum/FileVacuum.xcarchive/Products/Applications -LFileVacuum/FileVacuum.xcarchive/SwiftSupport/macosx -LPods/Headers/Public/SwiftySandboxFileAccess -LPods/SwiftySandboxFileAccess/SwiftySandboxFileAccess/Classes -LCarthage/Build/Mac/AppReceiptValidator.framework.dSYM/Contents -LCarthage/Build/iOS/AppReceiptValidator.framework.dSYM/Contents -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Demo\ iOS -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Demo\ macOS -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ Shared -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ iOS -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ macOS -LFileVacuum/FileVacuum.xcarchive/Products/Applications/FileVacuum.app -LCarthage/Build/Mac/AppReceiptValidator.framework.dSYM/Contents/Resources -LCarthage/Build/iOS/AppReceiptValidator.framework.dSYM/Contents/Resources -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/Supporting\ Files -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ Shared/Test\ Assets -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ Shared/Tools -LFileVacuum/FileVacuum.xcarchive/Products/Applications/FileVacuum.app/Contents -LCarthage/Build/Mac/AppReceiptValidator.framework.dSYM/Contents/Resources/DWARF -LCarthage/Build/iOS/AppReceiptValidator.framework.dSYM/Contents/Resources/DWARF -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL/include-ios -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL/include-macos -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL/lib-ios -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL/lib-macos -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/Supporting\ Files/iOS -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/Supporting\ Files/macOS -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ Shared/Test\ Assets/Other\ Receipts -LFileVacuum/FileVacuum.xcarchive/Products/Applications/FileVacuum.app/Contents/Frameworks -LFileVacuum/FileVacuum.xcarchive/Products/Applications/FileVacuum.app/Contents/MacOS -LFileVacuum/FileVacuum.xcarchive/Products/Applications/FileVacuum.app/Contents/Resources -LFileVacuum/FileVacuum.xcarchive/Products/Applications/FileVacuum.app/Contents/_CodeSignature -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL/include-ios/openssl -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator/OpenSSL/include-macos/openssl -LCarthage/Checkouts/AppReceiptValidator/AppReceiptValidator/AppReceiptValidator\ Tests\ Shared/Test\ Assets/Other\ Receipts/unparseable -L/Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Products/Debug/SwiftySandboxFileAccess -F/Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Products/Debug -F/Users/mike/Documents/Mikeumus/code/FileVacuum/menubar-filevacuum/Carthage/Build/Mac -filelist /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Intermediates.noindex/FileVacuum.build/Debug/FileVacuum.build/Objects-normal/x86_64/FileVacuum.LinkFileList -Xlinker -rpath -Xlinker @executable_path/../Frameworks -Xlinker -object_path_lto -Xlinker /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Intermediates.noindex/FileVacuum.build/Debug/FileVacuum.build/Objects-normal/x86_64/FileVacuum_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -fobjc-link-runtime -fprofile-instr-generate -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Intermediates.noindex/FileVacuum.build/Debug/FileVacuum.build/Objects-normal/x86_64/FileVacuum.swiftmodule -ObjC -lSwiftySandboxFileAccess -framework AppReceiptValidator -framework Automator -lfile_vacuum -lresolv -lPods-FileVacuum -Xlinker -dependency_info -Xlinker /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Intermediates.noindex/FileVacuum.build/Debug/FileVacuum.build/Objects-normal/x86_64/FileVacuum_dependency_info.dat -o /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Products/Debug/FileVacuum.app/Contents/MacOS/FileVacuum -Xlinker -add_ast_path -Xlinker /Users/mike/Library/Developer/Xcode/DerivedData/FileVacuum-defywbakdmgzprcegfjrlcpktbta/Build/Intermediates.noindex/SwiftyStoreKit.build/Debug/SwiftyStoreKit.build/Objects-normal/x86_64/SwiftyStoreKit.swiftmodule

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

pod install 和 pod update 发出以下警告：

[!] The `FileVacuum [Debug]` target overrides the `LIBRARY_SEARCH_PATHS` build setting defined in `Pods/Target Support Files/Pods-FileVacuum/Pods-FileVacuum.debug.xcconfig'. This can lead to problems with the CocoaPods installation
    - Use the `$(inherited)` flag, or
    - Remove the build settings from the target.

[!] The `FileVacuum [Release]` target overrides the `LIBRARY_SEARCH_PATHS` build setting defined in `Pods/Target Support Files/Pods-FileVacuum/Pods-FileVacuum.release.xcconfig'. This can lead to problems with the CocoaPods installation
    - Use the `$(inherited)` flag, or
    - Remove the build settings from the target.

我将“目标”级别 LIBRARY_SEARCH_PATHS 更改为 $(inherited)，这些警告消失了，但我更改了“项目”级别 LIBRARY_SEARCH_PATHS 并且不记得在更改之前它是什么所以我只是设置它给$(inherited), $(PROJECT_DIR) recursive

我做了以下事情：

关闭Xcode；
运行 pod install 和 pod update；
打开新的 .xcworkspace；
清理并构建项目；

以下是应用程序的一些设置：

LIBRARY_SEARCH_PATH 设置对于“项目”和“目标”级别是相同的：

“file_vacuum”不会导致文件/设置搜索：

在上面的截图中，你可以看到我正在链接一个libfile_vacuum.a，我不知道这是否是导致问题的file_vacuum。

Podfile

platform :macos, '10.15'

target 'FileVacuum' do
  pod 'SwiftySandboxFileAccess', '~> 2.0'
end

【问题讨论】：

标签： xcode macos cocoapods

【解决方案1】：

它似乎无法找到 file_vacuum 库，这是一个基于您的屏幕截图的静态库。确保在目标构建设置中的LIBRARY_SEARCH_PATH 中添加该文件的路径。您也可以只搜索搜索路径并在那里找到它。一般来说，每当出现关于找不到头文件或对象的错误时，它都与搜索路径有关，意味着编译器无法找到该类型/库的信息。

Framework、Library 和 Header 搜索路径是您可以定义并帮助 Compiler 查找这些文件的三种类型。

【讨论】：