チュートリアルから iOS アプリをビルドすると、次のメッセージが表示されます。
Ld /Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Products/Debug-iphonesimulator/FirstGame.app/FirstGame normal i386
cd /Users/EvanBresnan/Documents/Xcode/FirstGame
export IPHONEOS_DEPLOYMENT_TARGET=9.2
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/ usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9. 2.sdk -L/Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Products/Debug-iphonesimulator -F/Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/ Products/Debug-iphonesimulator -filelist /Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Intermediates/FirstGame.build/Debug-iphonesimulator/FirstGame.build/Objects-normal/i386/FirstGame.LinkFileList - Xlinker -rpath -Xlinker @executable_path/Frameworks -mios-simulator-version-min=9.2 -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -Xlinker -dependency_info -Xlinker /Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Intermediates/FirstGame.build/Debug -iphonesimulator/FirstGame.build/Objects-normal/i386/FirstGame_dependency_info.dat -o /Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Products/Debug-iphonesimulator/FirstGame.app/FirstGamedat -o /Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Products/Debug-iphonesimulator/FirstGame.app/FirstGamedat -o /Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Products/Debug-iphonesimulator/FirstGame.app/FirstGame
シンボル _HighScoreNumber が重複しています:
/Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Intermediates/FirstGame.build/Debug-iphonesimulator/FirstGame.build/Objects-normal/i386/ViewController.o
/Users/EvanBresnan/Library/Developer/Xcode/DerivedData/FirstGame-ekyyaqwhjsjimddxggwkkkgblylu/Build/Intermediates/FirstGame.build/Debug-iphonesimulator/FirstGame.build/Objects-normal/i386/Game.o
ld: アーキテクチャ i386 の 1 つの重複シンボル
clang: エラー: リンカー コマンドが終了コード 1 で失敗しました (呼び出しを確認するには -v を使用してください)