diff -up ./src/core/eventsystem.cpp.orig ./src/core/eventsystem.cpp --- ./src/core/eventsystem.cpp.orig 2018-01-13 21:13:10.232971202 +0200 +++ ./src/core/eventsystem.cpp 2018-01-13 21:13:22.759496519 +0200 @@ -14,6 +14,7 @@ */ +#include <Ogre.h> #include <OgreRoot.h> #include <OgreRenderTarget.h> #include <OgreRenderWindow.h> diff -up ./src/gui/graphicobject.h.orig ./src/gui/graphicobject.h --- ./src/gui/graphicobject.h.orig 2018-01-13 21:41:31.964324239 +0200 +++ ./src/gui/graphicobject.h 2018-01-13 21:41:11.746101391 +0200 @@ -16,6 +16,7 @@ #ifndef __SUMWARS_GUI_GRAPHICOBJECT_H__ #define __SUMWARS_GUI_GRAPHICOBJECT_H__ +#include "Ogre.h" #include "OgreMovableObject.h" #include "OgreSceneNode.h" #include "OgreTagPoint.h"