如何使用gcc/g++编译多个cpp文件头文件

我正在尝试编译多个.cpp和.h文件。但它显示了错误。

我的文件是：

应用程序窗口.cpp

#include "ApplicationWindow.h"
void ApplicationWindow::DrawContents ()
{
  GetView()->DrawOn(this);
}

应用程序窗口.h

#ifndef APPLICATION_WINDOW_H
#define APPLICATION_WINDOW_H
#include "Window.h"
class ApplicationWindow : public Window
{
public:
    // ...
    virtual void DrawContents();
};
#endif /* APPLICATION_WINDOW_H */

窗口.h

#ifndef WINDOW_H
#define WINDOW_H
#include "View.h"
class Point;
class WindowImp;
class Window {
public:
    Window(View* contents);
    // requests handled by window
    virtual void DrawContents();
    virtual void Open();
    virtual void Close();
    virtual void Iconify();
    virtual void Deiconify();
    // requests forwarded to implementation
    virtual void SetOrigin(const Point& at);
    virtual void SetExtent(const Point& extent);
    virtual void Raise();
    virtual void Lower();
    virtual void DrawLine(const Point&, const Point&);
    virtual void DrawRect(const Point&, const Point&);
    virtual void DrawPolygon(const Point[], int n);
    virtual void DrawText(const char*, const Point&);
protected:
    WindowImp* GetWindowImp();
    View* GetView();
private:
    WindowImp* _imp;
    View* _contents; // the window's contents
};
#endif /* WINDOW_H */

Window.cpp

#include "Window.h"
#include "WindowImp.h"
#include "WindowSystemFactory.h"
void Window::DrawRect (const Point& p1, const Point& p2) {
    WindowImp* imp = GetWindowImp();
    imp->DeviceRect(p1.X(), p1.Y(), p2.X(), p2.Y());
}
WindowImp* Window::GetWindowImp () {
    if (_imp == 0) {
        _imp = WindowSystemFactory::Instance()->MakeWindowImp();
    }
    return _imp;
}

视图.h

#ifndef VIEW_H
#define VIEW_H
class ApplicationWindow;
class View {
public:
    void DrawOn(const ApplicationWindow* w) const;
};
#endif /* VIEW */

查看.cpp

#include "View.h"
#include <iostream>
using namespace std;
void View::DrawOn(const ApplicationWindow* w) const
{
    cout << "DrawOn(" << w << ")" << endl;
}

我也有WindowImp.h和WindowSystemFactory.h文件。

我尝试了从其他stackoverflow答案中找到的所有方法（使用G++编译多个.cpp和.h文件.

但它显示了以下错误：

"Window::DrawPolygon(Point const*, int)", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::Open()", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::Close()", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::Lower()", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::Raise()", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::GetView()", referenced from:
  ApplicationWindow::DrawContents() in ApplicationWindow.o
"Window::Iconify()", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::DrawLine(Point const&, Point const&)", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::DrawRect(Point const&, Point const&)", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::DrawText(char const*, Point const&)", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::Deiconify()", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::SetExtent(Point const&)", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"Window::SetOrigin(Point const&)", referenced from:
  vtable for ApplicationWindow in ApplicationWindow.o
"View::DrawOn(ApplicationWindow const*) const", referenced from:
  ApplicationWindow::DrawContents() in ApplicationWindow.o
"typeinfo for Window", referenced from:
  typeinfo for ApplicationWindow in ApplicationWindow.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

还有我的g++ --version

Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin13.3.0
Thread model: posix

我使用的是Mac OSX 10.9.4。我知道这是上面提到的答案的重复，但我仍然无法解决。如果有人帮助我，对我来说会很好。

我只需要运行g++ ApplicationWindow.cpp文件，就不会出现上述错误。但是我试着用上面粘贴的链接中提到的方式链接所有其他.cpp和.h文件。提前感谢。。。。