我看到像这样的错误
src/singleton.cxx:16:error:静态成员函数src/singleton.cxx:28:error: from this location src/singleton.cxxlocation src/singleton.cxx:31:error: from this location src/singleton.cxx:在函数'int ()‘中无效使用成员'Singleton::
_ZN9SingleTon11getInstanceEv[SingleTon::getInstance()]+0x1b): undefined reference to `SingleTon::p'
/_ZN9SingleTon12makeInstanceEv[SingleTon::makeInstance()]+0x21): undefined reference to `SingleTon::SingleTon_ZN9SingleTon<