创建两个同样名称的类

ld: warning: directory not found for option '-L/Users/tiancong/Desktop/QMZB/GLKJLiveTelecast/GLKJLiveTelecast/Vendors/Faceunity/FaceUnity-SDK-iOS'
duplicate symbol OBJC_CLASS$_FxInfo in:
/Users/tiancong/Library/Developer/Xcode/DerivedData/GLKJLiveTelecast-faoblutanniesxfxilqfmpucpsae/Build/Intermediates/GLKJLiveTelecast.build/Debug-iphoneos/GLKJLiveTelecast.build/Objects-normal/arm64/FxInfo.o
/Users/tiancong/Library/Developer/Xcode/DerivedData/GLKJLiveTelecast-faoblutanniesxfxilqfmpucpsae/Build/Intermediates/GLKJLiveTelecast.build/Debug-iphoneos/GLKJLiveTelecast.build/Objects-normal/arm64/PreviewViewController.o
duplicate symbol OBJC_METACLASS$_FxInfo in:
/Users/tiancong/Library/Developer/Xcode/DerivedData/GLKJLiveTelecast-faoblutanniesxfxilqfmpucpsae/Build/Intermediates/GLKJLiveTelecast.build/Debug-iphoneos/GLKJLiveTelecast.build/Objects-normal/arm64/FxInfo.o
/Users/tiancong/Library/Developer/Xcode/DerivedData/GLKJLiveTelecast-faoblutanniesxfxilqfmpucpsae/Build/Intermediates/GLKJLiveTelecast.build/Debug-iphoneos/GLKJLiveTelecast.build/Objects-normal/arm64/PreviewViewController.o
ld: 2 duplicate symbols for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)