它会提示您note: use ‘this->init出了什么问题.在使用模板的旧代码无法完全限定使用this->前缀访问类成员的情况下，会发生这种情况.要么尝试(a)在配置之前将CXXFLAGS='-fpermissive'添加到您的环境中，要么(b)获得较新的Qt版本，或者(c)使用较旧的编译器(替代).

It gives you a hint what is wrong note: use ‘this->init. This happens with older code using templates not fully qualifying the access to class members with the this-> prefix. Either try to (a) add CXXFLAGS='-fpermissive' to your environment before configuring, or (b) get a newer Qt Version or (c) an older compiler (kidding).