会报错：
Undefined symbols for architecture x86_64:
"_OBJCCLASS$_AVOSCloudSNS", referenced from:
objc-class-ref in AppController.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
当添加以下语句时： [AVOSCloudSNS setupPlatform:AVOSCloudSNSQQ withAppKey:@"1106870533" andAppSecret:@"69wJMsCLVIcRv28j" andRedirectURI:nil];
会报错： Undefined symbols for architecture x86_64: "_OBJCCLASS$_AVOSCloudSNS", referenced from: objc-class-ref in AppController.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)
如果删除此不会，请问什么问题？