我在链接时在cocos2d-x中收到此错误
Ld /Users/hareesh/Library/Developer/Xcode/DerivedData/AlphabetsTeacher-bkssouxddsguabddecsiknanrlci/Build/Intermediates/AlphabetsTeacher.build/Debug-iphoneos/AlphabetsTeacher-mobile.build/Objects-normal/arm64/AlphabetsTeacher-mobile normal arm64 cd / Users / hareesh / Desktop / AlphabetsTeacher / proj.ios_mac export IPHONEOS_DEPLOYMENT_TARGET = 6.0 export PATH =“/ Applications / Xcode 6.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode 6.app / Contents / Developer / usr / bin：/ usr / bin：/ bin：/ usr / sbin：/ sbin“/ Applications / Xcode \ 6.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang - arch arm64 -isysroot / Applications / Xcode \ 6.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.1.sdk -L / Users / hareesh / Library / Developer / Xcode / DerivedData / AlphabetsTeacher-bkssouxddsguabddecsiknanrlci / Build / Products / Debug-iphoneos -L / Users / hareesh / Desktop / AlphabetsTeacher / Resources -F / Users / hareesh / Library / Developer / Xcode / DerivedData / AlphabetsTe acher-bkssouxddsguabddecsiknanrlci / Build / Products / Debug-iphoneos -filelist /Users/hareesh/Library/Developer/Xcode/DerivedData/AlphabetsTeacher-bkssouxddsguabddecsiknanrlci/Build/Intermediates/AlphabetsTeacher.build/Debug-iphoneos/AlphabetsTeacher-mobile.build/Objects- normal / arm64 / AlphabetsTeacher-mobile.LinkFileList -dead_strip -stdlib = libc -fobjc-link-runtime -miphoneos-version-min = 6.0 -liconv -lcurl -framework Security / Users / hareesh / Library / Developer / Xcode / DerivedData / AlphabetsTeacher -bkssouxddsguabddecsiknanrlci / Build / Products / Debug-iphoneos / libcocos2d \ iOS.a -framework CoreMotion -framework Foundation-framework UIKit -framework CoreGraphics -framework OpenGLES -lz -framework QuartzCore -framework OpenAL -framework AVFoundation -framework AudioToolbox -Xlinker -dependency_info - Xlinker /Users/hareesh/Library/Developer/Xcode/DerivedData/AlphabetsTeacher-bkssouxddsguabddecsiknanrlci/Build/Intermediates/AlphabetsTeacher.build/Debug-iphoneos/AlphabetsTeacher-mobile.build/Objects-nor mal / arm64 / AlphabetsTeacher-mobile_dependency_info.dat -o /Users/hareesh/Library/Developer/Xcode/DerivedData/AlphabetsTeacher-bkssouxddsguabddecsiknanrlci/Build/Intermediates/AlphabetsTeacher.build/Debug-iphoneos/AlphabetsTeacher-mobile.build/Objects-normal/ arm64 / AlphabetsTeacher-mobile ld：警告：忽略文件/Users/hareesh/Desktop/AlphabetsTeacher/Resources/libcurl.a，缺少文件中所需的架构arm64 /Users/hareesh/Desktop/AlphabetsTeacher/Resources/libcurl.a(3个切片）架构arm64的未定义符号：“vtable for Alphabet_MenuLayer”，引用自：Alphabet_MenuLayer :: Alphabet_MenuLayer（）在Alphabet_MenuScene.o中注意：缺少的vtable通常表示第一个非内联虚拟成员函数没有定义 . ld：找不到架构arm64 clang的符号：错误：链接器命令失败，退出代码为1（使用-v查看调用）