We will still use mostly the same code as in the previous recipe, but we will need to modify src/CMakeLists.txt and the Message.hpp header file. The latter will include the new, autogenerated header file, messageExport.h:
#pragma once#include <iosfwd>#include <string>#include "messageExport.h"class message_EXPORT Message {public: Message(const std::string &m) : message_(m) {} friend std::ostream &operator<<(std::ostream &os, Message &obj) { return obj.printObject(os); }private: std::string message_; std::ostream &printObject(std::ostream &os);};std::string getUUID();
The message_EXPORT preprocessor directive was introduced in the declaration of the Message class. This directive will let the compiler generate symbols that are ...
