I'm working on converting a Linux project of mine to compile on Windows using MinGW. It compiles and runs just fine on Linux, but when I attempt to compile it with MinGW it bombs out with the following error message:

camera.h:11: error: declaration does not declare anything
camera.h:12: error: declaration does not declare anything

I'm kind of baffled why this is happening, because

1. I'm using the same version of g++ (4.4) on both Linux and Windows (via MinGW).
2. The contents of camera.h is absurdly simple.

Here's the code. It's choking on lines 11 and 12 where float near; and float far; are defined.

#include "Vector.h"

#ifndef _CAMERA_H_
#define _CAMERA_H_

class Camera{
public:
  Vector eye;
  Vector lookAt;
  float fov;
  float near;
  float far;
};

#endif

Thanks for your help.