Xcode8.0 core data 编译时报错，求大神解答。

ml_magic 2016-11-22 04:10:31

前天刚更新的Xcode8.1版本，使用core data时生成文件之后预编译就出现了错误，错误如下：

Ld /Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Products/Debug-iphonesimulator/Cocoa\ Data.app/Cocoa\ Data normal x86_64
cd "/Users/mac/Desktop/iOS练习/Cocoa Data"
export IPHONEOS_DEPLOYMENT_TARGET=8.0
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 x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.1.sdk -L/Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Products/Debug-iphonesimulator -F/Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Products/Debug-iphonesimulator -filelist /Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa\ Data.build/Debug-iphonesimulator/Cocoa\ Data.build/Objects-normal/x86_64/Cocoa\ Data.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -mios-simulator-version-min=8.0 -Xlinker -object_path_lto -Xlinker /Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa\ Data.build/Debug-iphonesimulator/Cocoa\ Data.build/Objects-normal/x86_64/Cocoa\ Data_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -framework CoreData -Xlinker -dependency_info -Xlinker /Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa\ Data.build/Debug-iphonesimulator/Cocoa\ Data.build/Objects-normal/x86_64/Cocoa\ Data_dependency_info.dat -o /Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Products/Debug-iphonesimulator/Cocoa\ Data.app/Cocoa\ Data

duplicate symbol _OBJC_CLASS_$_Book in:
/Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa Data.build/Debug-iphonesimulator/Cocoa Data.build/Objects-normal/x86_64/Book+CoreDataClass.o
duplicate symbol _OBJC_METACLASS_$_Book in:
/Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa Data.build/Debug-iphonesimulator/Cocoa Data.build/Objects-normal/x86_64/Book+CoreDataClass.o
duplicate symbol _OBJC_CLASS_$_Person in:
/Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa Data.build/Debug-iphonesimulator/Cocoa Data.build/Objects-normal/x86_64/Person+CoreDataClass.o
duplicate symbol _OBJC_METACLASS_$_Person in:
/Users/mac/Library/Developer/Xcode/DerivedData/Cocoa_Data-braztjaojeogcidtutiidvditthh/Build/Intermediates/Cocoa Data.build/Debug-iphonesimulator/Cocoa Data.build/Objects-normal/x86_64/Person+CoreDataClass.o
ld: 4 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

各种方法都试过了还是不好使，哪位大神看到了请帮忙解决一下。

自己解决时使用的方法，1、Build setting 中的Bitcide 的属性改为YES (不好使pass）
2、Build setting 中linking中的other linker flags 的属性全改为-all_load(不好使pass)
3、自己又把core data 的系统库又加了一遍（不好使pass）

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