fix Linux build (only OpenCL/gwen tested)

btgui/OpenGLWindow/GlewWindows/GL/glew.h

@@ -1171,6 +1171,7 @@ GLAPI void GLAPIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei heigh
 #endif /* GL_VERSION_1_1 */
 
 /* ---------------------------------- GLU ---------------------------------- */
+#define GLEW_NO_GLU
 
 #ifndef GLEW_NO_GLU
 /* this is where we can safely include GLU */

btgui/OpenGLWindow/OpenGLInclude.h

@@ -35,7 +35,7 @@ subject to the following restrictions:
 #include <GL/glu.h>
 #else
 #include <GL/gl.h>
-#include <GL/glu.h>
+//#include <GL/glu.h>
 #endif //_WINDOWS
 #endif //APPLE
 

btgui/OpenGLWindow/X11OpenGLWindow.cpp

@@ -1,11 +1,13 @@
 #include "X11OpenGLWindow.h"
+#include "OpenGLInclude.h"
+
 #include<stdio.h>
 #include<stdlib.h>
 #include<X11/X.h>
 #include<X11/Xlib.h>
 #include<GL/gl.h>
 #include<GL/glx.h>
-#include<GL/glu.h>
+//#include<GL/glu.h>
 
 
 GLint                   att[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None };
@@ -413,3 +415,9 @@ void X11OpenGLWindow::setKeyboardCallback( b3KeyboardCallback	keyboardCallback)
 	m_data->m_keyboardCallback = keyboardCallback;
 
 }
+
+b3KeyboardCallback      X11OpenGLWindow::getKeyboardCallback()
+{
+	return m_data->m_keyboardCallback;
+}
+

btgui/OpenGLWindow/X11OpenGLWindow.h

@@ -52,6 +52,7 @@ public:
         virtual void setResizeCallback(b3ResizeCallback resizeCallback);
         virtual void setWheelCallback(b3WheelCallback wheelCallback);
         virtual void setKeyboardCallback( b3KeyboardCallback    keyboardCallback);
+        virtual b3KeyboardCallback      getKeyboardCallback();
 
         virtual void setRenderCallback( b3RenderCallback renderCallback);