鏈接器命令失敗，退出代碼1（使用-v查看調用）xcode

Question

我在xcode中看到這個錯誤，我不知道可能是什麼原因。我不知道我做了什麼導致此問題：

ld: warning: directory not found for option '-L2' 
duplicate symbol _OBJC_IVAR_$_JVMenuPopoverViewController._vibrancyEffectView in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADVenuesTopListAroundViewController.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/JVMenuPopoverViewController.o 
duplicate symbol _OBJC_IVAR_$_JVMenuPopoverViewController._blurEffectView in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADVenuesTopListAroundViewController.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/JVMenuPopoverViewController.o 
duplicate symbol _OBJC_IVAR_$_JVMenuPopoverViewController._vibrancyEffect in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADVenuesTopListAroundViewController.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/JVMenuPopoverViewController.o 
duplicate symbol _OBJC_IVAR_$_JVMenuPopoverViewController._doneAnimations in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADVenuesTopListAroundViewController.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/JVMenuPopoverViewController.o 
duplicate symbol _OBJC_IVAR_$_JVMenuPopoverViewController._icons in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADVenuesTopListAroundViewController.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/JVMenuPopoverViewController.o 
duplicate symbol _OBJC_IVAR_$_JVMenuPopoverViewController._image in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADVenuesTopListAroundViewController.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/JVMenuPopoverViewController.o 
duplicate symbol _GMSOrientationMake in: 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/AppDelegate.o 
    /Users/DesarrolloOS/Library/Developer/Xcode/DerivedData/aplication-cturpddkzvdycrbrfxglegcvaepl/Build/Intermediates/aplication.build/Debug-iphonesimulator/aplication.build/Objects-normal/i386/MADViewController.o 
ld: 16 duplicate symbols for architecture i386 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

---

ld: warning: directory not found for option '-L2' 
    ld: 16 duplicate symbols for architecture armv7 
    linker command failed with exit code 1 (use -v to see invocation) 

Answer 1

你有16個重複的符號。這些值都包含在JVMenuPopoverViewController.o和MADVenuesTopListAroundViewController.o中。你需要他們只在一個地方。看看名字，我的猜測是你已經把部分或全部的實現部分放到了JVMenuPopoverViewController.h中，然後在MADVenuesTopListAroundViewController.m中導入了這個文件。這樣，MADVenuesTopListAroundViewController.o和JVMenuPopoverViewController.o都會以該實現部分結束，因此它會在您的應用程序中獲得兩次。

您需要將實現件移動到JVMenuPopoverViewController.m中。只有接口聲明應該在JVMenuPopoverViewController.h中。

如果你不能從那裏弄清楚，或者我的猜測是錯誤的，那麼你需要顯示JVMenuPopoverViewController.h，JVMenuPopoverViewController.m，MADVenuesTopListAroundViewController.h，MADVenuesTopListAroundViewController.m的代碼。