在xcode中创建的cocos2d-x项目，然后添加了一个基类，里面有虚方法，编译时出错，错误如下：
Undefined symbols for architecture x86_64: "typeinfo for BaseReader", referenced from: typeinfo for MainPageReader in MainPageReader.o "vtable for BaseReader", referenced from: BaseReader::BaseReader() in BaseReader.o BaseReader::BaseReader() in MainPageReader.o NOTE: a missing vtable usually means the first non-inline virtual member function has no definition. ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)问题其实是出在，基类中有的虚方法没有重写
转载于:https://www.cnblogs.com/LeeYZ/p/4234065.html
