mkdir cmake-build
cd cmake-build
cmake ../
make

#ifndef PLUGIN_INTERFACE_HPP
#define PLUGIN_INTERFACE_HPP

#include <pf4cpp/plugin_object.hpp>

#include <string>

// for windows
#ifdef PLUGINDEMO_EXPORTS
#  define PLUGINDEMO_API PF4CPP_DECL_EXPORT
#else
#  define PLUGINDEMO_API PF4CPP_DECL_IMPORT
#endif

class PLUGINDEMO_API PluginInterface : public pf4cpp::PluginObject
{
public:
    PluginInterface() { }
    ~PluginInterface() { }

    virtual std::string GetVersion() const = 0;
    virtual std::string GetName() const = 0;
    virtual int Add(int a, int b) const = 0;
};

#endif // PLUGIN_INTERFACE_HPP

#ifndef PLUGIN_DEMO_HPP
#define PLUGIN_DEMO_HPP

#include "plugin_interface.hpp"

class PLUGINDEMO_API PluginDemo : public PluginInterface
{
public:
    PluginDemo();
    ~PluginDemo();

    std::string GetVersion() const override;
    std::string GetName() const override;
    int Add(int a, int b) const override;
};

PF4CPP_DECLARE_PLUGIN_INTERFACE(PluginDemo)

#endif // PLUGIN_DEMO_HPP

#include "plugin_demo.hpp"

PluginDemo::PluginDemo() { }

PluginDemo::~PluginDemo() { }

std::string PluginDemo::GetVersion() const
{
    return "1.0.0";
}

std::string PluginDemo::GetName() const
{
    return "PluginDemo";
}

int PluginDemo::Add(int a, int b) const
{
    return a + b;
}

#include <iostream>

#include <pf4cpp/plugin_loader.hpp>

#include "plugin_interface.hpp"

int main(int argc, char* argv[])
{
    pf4cpp::PluginLoader loader("./plugin_demo");

    bool loaded = loader.Load();
    if (!loaded) {
        std::cout << "Load plugin failed: " << loader.GetErrorString() << std::endl;
    }
    std::cout << "Load plugin successfully" << std::endl;
    std::cout << "file name: " << loader.GetFileName() << std::endl;
    std::cout << "complete file name: " << loader.GetCompleteFileName() << std::endl;

    pf4cpp::PluginObject* object = loader.GetInstance();
    PluginInterface* plugin = dynamic_cast<PluginInterface*>(object);
    if (plugin) {
        std::cout << "Plugin version: " << plugin->GetVersion() << std::endl;
        std::cout << "Plugin Name: " << plugin->GetName() << std::endl;
        std::cout << "Add(1, 2) function in plugin: " << plugin->Add(1, 2) << std::endl;
    }

    return 0;
}