diff --git a/atris.c b/atris.c
index dbdc258..61ed4b9 100644
--- a/atris.c
+++ b/atris.c
@@ -48,6 +48,8 @@ static sound_style *event_ss[2];
 static AI_Player *event_ai[2];
 static char *event_name[2];
 extern int Score[2];
+GT gametype;
+struct option_struct Options;
 
 /***************************************************************************
  *      Panic()
diff --git a/atris.h b/atris.h
index 4dc4d5b..19cc456 100644
--- a/atris.h
+++ b/atris.h
@@ -67,7 +67,7 @@ typedef enum {
     QUIT		=6,
     DEMO		=7
 } GT;
-GT gametype;
+extern GT gametype;
 
 #ifndef min
 #define min(a,b)	((a)<(b)?(a):(b))
diff --git a/display.c b/display.c
index cbbca0d..f63f5cf 100644
--- a/display.c
+++ b/display.c
@@ -14,6 +14,25 @@
 
 #include "xflame.pro"
 
+SDL_Color color_white;
+SDL_Color color_black;
+SDL_Color color_red;
+SDL_Color color_blue;
+SDL_Color color_purple;
+
+Uint32	int_black;
+Uint32  int_white;
+Uint32	int_grey;
+Uint32	int_blue;
+Uint32 	int_med_blue;
+Uint32 	int_dark_blue;
+Uint32	int_purple;
+Uint32  int_dark_purple;
+Uint32  int_solid_black;
+
+SDL_Surface *screen, *widget_layer, *flame_layer;
+TTF_Font *font, *sfont, *lfont, *hfont;	/* normal, small , large, huge font */
+
 struct layout_struct {
     /* the whole board layout */
     SDL_Rect grid_border[2];
diff --git a/display.h b/display.h
index db4d68a..6d71b9d 100644
--- a/display.h
+++ b/display.h
@@ -9,24 +9,24 @@
 
 #include "SDL/SDL_ttf.h"
 
-SDL_Color color_white;
-SDL_Color color_black;
-SDL_Color color_red;
-SDL_Color color_blue;
-SDL_Color color_purple;
+extern SDL_Color color_white;
+extern SDL_Color color_black;
+extern SDL_Color color_red;
+extern SDL_Color color_blue;
+extern SDL_Color color_purple;
 
-Uint32	int_black;
-Uint32  int_white;
-Uint32	int_grey;
-Uint32	int_blue;
-Uint32 	int_med_blue;
-Uint32 	int_dark_blue;
-Uint32	int_purple;
-Uint32  int_dark_purple;
-Uint32  int_solid_black;
+extern Uint32	int_black;
+extern Uint32  int_white;
+extern Uint32	int_grey;
+extern Uint32	int_blue;
+extern Uint32 	int_med_blue;
+extern Uint32 	int_dark_blue;
+extern Uint32	int_purple;
+extern Uint32  int_dark_purple;
+extern Uint32  int_solid_black;
 
-SDL_Surface *screen, *widget_layer, *flame_layer;
-TTF_Font *font, *sfont, *lfont, *hfont;	/* normal, small , large, huge font */
+extern SDL_Surface *screen, *widget_layer, *flame_layer;
+extern TTF_Font *font, *sfont, *lfont, *hfont;	/* normal, small , large, huge font */
 
 #define int_border_color	int_grey
 #define int_button_face1	int_dark_blue
diff --git a/options.h b/options.h
index 575fc1a..cf38b40 100644
--- a/options.h
+++ b/options.h
@@ -25,6 +25,7 @@ struct option_struct {
     int named_sound;
     int named_piece;
     int named_game;
-} Options;
+};
+extern struct option_struct Options;
 
 #endif
diff --git a/piece.c b/piece.c
index 4c08eaf..6944165 100644
--- a/piece.c
+++ b/piece.c
@@ -33,6 +33,9 @@
 #include "piece.h"
 #include "options.h"
 
+color_style special_style;
+SDL_Surface *edge[4];	/* hikari to kage */
+
 /***************************************************************************
  *      load_piece_style()
  * Load a piece style from the given file.
diff --git a/piece.h b/piece.h
index bc4226c..a47abbe 100644
--- a/piece.h
+++ b/piece.h
@@ -67,13 +67,11 @@ typedef struct color_style_struct {
     int h;			/* height of each color block */
 } color_style;
 
-color_style special_style;
-
 #define HORIZ_LIGHT 	0
 #define VERT_LIGHT 	1
 #define HORIZ_DARK 	2
 #define VERT_DARK	3
-SDL_Surface *edge[4];	/* hikari to kage */
+extern SDL_Surface *edge[4];	/* hikari to kage */
 
 /* this structure holds all of the color styles we have been able to load
  * for this game */