Undefined symbols for architecture i386: "_OBJC_CLASS_$_RiskViewController", referenced from:

Undefined symbols for architecture i386:  "_OBJC_CLASS_$_RiskViewController", referenced from:      objc-class-ref in ZYBXStepsViewController.old: symbol(s) not found for architecture i386clang: error: linker command failed with exit code 1 (use -v to see invocation) 解决办法 发现是真机引用的已删除的文件   _RiskViewController所以有遇到同样的问题的童鞋 查找下你导入的类是否已经是删除的状态