fixed sdl/SConscript to only compile gui.cpp when using GTK in SConstruct

trunk/src/drivers/sdl/SConscript

@@ -12,18 +12,19 @@ source_list = Split(
     input.cpp
     config.cpp
     sdl.cpp
-    gui.cpp
     sdl-joystick.cpp
     sdl-sound.cpp
     sdl-throttle.cpp
     sdl-video.cpp
     unix-netplay.cpp
-    game.cpp
     """)
 
 Import('env')
 if 'GL' in env['LIBS']:
   source_list.append('sdl-opengl.cpp')
 
+if env['GTK'] or env['GTK3']:
+  source_list.append('gui.cpp')
+
 source_list = ['drivers/sdl/' + source for source in source_list]
 Return('source_list')

trunk/src/drivers/sdl/gui.h

@@ -21,7 +21,10 @@
 #define FCEUX_GUI_H
 
 #define GTK
+
+#ifdef _GTK
 #include <gtk/gtk.h>
+#endif
 extern GtkWidget* MainWindow;
 extern GtkWidget* evbox;
 extern GtkRadioAction* stateSlot;