Index: shape_hex.c
--- shape_hex.c.orig
+++ shape_hex.c
@@ -21,6 +21,7 @@
   method.
 ******************************************************************************/
 
+void
 hex_set_dimensions (shape, cell_size, side)
   shape_type *shape;
   int cell_size,
@@ -124,6 +125,7 @@ hex_set_dimensions (shape, cell_size, side)
   account any row- and column-based shifts.
 ******************************************************************************/
 
+void
 hex_set_center (cell, shape, side)  
   cell_type *cell;
   shape_type *shape;
@@ -145,6 +147,7 @@ hex_set_center (cell, shape, side)  
   Set the even and odd horizon arrays for <shape>.
 ******************************************************************************/
 
+void
 hex_set_horizons (shape)
   shape_type *shape;
 {
@@ -235,6 +238,7 @@ hex_set_horizons (shape)
   Set the intercell pointers for the given tiling.
 ******************************************************************************/
 
+void
 hex_set_connections ()
 {
   int i, j,
@@ -404,6 +408,7 @@ hex_set_connections ()
 		|__\______/________|
 ******************************************************************************/
 
+void
 hex_set_selects (shape, select, side) 
   shape_type *shape;
   select_type *select;
