苹果 mach-o 链接器（id）错误与此混淆

Question

我刚刚在 xcode 4.2 中打开了在 xcode 3.1.5 版本中制作的项目，并且收到以下错误，任何人都可以在这方面帮助我。

1)

Ld /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app/ARecipeViewer normal i386
    cd /Users/hasmukh.mandavia/Desktop/DevelopmentArea/ARecipe
    setenv MACOSX_DEPLOYMENT_TARGET 10.6
    setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -L/Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator -L/Users/hasmukh.mandavia/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.0.sdk/lib -L/Users/hasmukh.mandavia/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.0.sdk/lib/gstreamer-0.10 -L/Users/hasmukh.mandavia/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.0.sdk/lib/pkgconfig -F/Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator -filelist /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Intermediates/ARecipeViewer.build/Debug-iphonesimulator/ARecipeViewer.build/Objects-normal/i386/ARecipeViewer.LinkFileList -mmacosx-version-min=10.6 -Xlinker -objc_abi_version -Xlinker 2 -lpocketsphinx -lsphinxbase -Xlinker -no_implicit_dylibs -D__IPHONE_OS_VERSION_MIN_REQUIRED=30100 -framework Foundation -framework UIKit -lsqlite3.0 -framework AudioToolbox -framework CFNetwork -liconv -lcv -lcxcore -framework CoreGraphics -framework QuartzCore -framework OpenGLES -o /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app/ARecipeViewer

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

2)

GenerateDSYMFile /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app.dSYM /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app/ARecipeViewer
    cd /Users/hasmukh.mandavia/Desktop/DevelopmentArea/ARecipe
    setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Developer/usr/bin/dsymutil /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app/ARecipeViewer -o /Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app.dSYM

error: unable to open executable '/Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app/ARecipeViewer'

Answer 1

1.) 正如第一个错误所说

ld: library not found for -lcv

这意味着您的项目需要'cv' 的静态库和 它要么不在您的项目中，要么放置在其他位置（如果您正在使用它）

或

您在构建设置中添加了额外的编译器标志（如果您没有在代码中使用该库）。在构建设置中遵循编译器标志。

-liconv -lcv -lcxcore

将 cv 库放在正确的位置。（以便它可以包含在项目中）。

2.) 第二个错误可能是因为 .app 文件尚未在派生数据目录中创建。 转到错误显示的路径，即验证 .app 文件是否存在。

error: unable to open executable '/Users/hasmukh.mandavia/Library/Developer/Xcode/DerivedData/ARecipeViewer-cdsqawgcznmakicuonkiinivjeed/Build/Products/Debug-iphonesimulator/ARecipeViewer.app/ARecipeViewer'