Subject: [PATCH] debian/use-system-libs

Path to build irrlicht using the system libraries for png,zlib and
jpeg as well as the glext family of header files.

Signed-off-by: Christoph Egger <debian@christoph-egger.org

--- a/lib/irrlicht/source/Irrlicht/COpenGLExtensionHandler.h
+++ b/lib/irrlicht/source/Irrlicht/COpenGLExtensionHandler.h
@@ -21,7 +21,7 @@
 	#endif
 	#include <GL/gl.h>
 	#if defined(_IRR_OPENGL_USE_EXTPOINTER_)
-		#include "glext.h"
+		#include <GL/glext.h>
 	#endif
 	#include "wglext.h"
 
@@ -36,7 +36,7 @@
 	#endif
 	#include <OpenGL/gl.h>
 	#if defined(_IRR_OPENGL_USE_EXTPOINTER_)
-		#include "glext.h"
+		#include <GL/glext.h>
 	#endif
 #elif defined(_IRR_COMPILE_WITH_SDL_DEVICE_) && !defined(_IRR_COMPILE_WITH_X11_DEVICE_)
 	#if defined(_IRR_OPENGL_USE_EXTPOINTER_)
@@ -50,7 +50,7 @@
 	#include <SDL/SDL_video.h>
 	#include <SDL/SDL_opengl.h>
         typedef void (APIENTRYP PFNGLBLENDEQUATIONPROC) (GLenum mode);
-	#include "glext.h"
+	#include <GL/glext.h>
 #else
 	#if defined(_IRR_OPENGL_USE_EXTPOINTER_)
 		#define GL_GLEXT_LEGACY 1
--- a/lib/irrlicht/source/Irrlicht/COpenGLSLMaterialRenderer.h
+++ b/lib/irrlicht/source/Irrlicht/COpenGLSLMaterialRenderer.h
@@ -12,7 +12,7 @@
 	#define WIN32_LEAN_AND_MEAN
 	#include <windows.h>
 	#include <GL/gl.h>
-	#include "glext.h"
+	#include <GL/glext.h>
 #else
 #if defined(_IRR_OPENGL_USE_EXTPOINTER_)
 	#define GL_GLEXT_LEGACY 1
@@ -25,7 +25,7 @@
 	#include <GL/gl.h>
 #endif
 #if defined(_IRR_OPENGL_USE_EXTPOINTER_)
-	#include "glext.h"
+	#include <GL/glext.h>
 #endif
 #endif