1 files changed, 6 insertions, 6 deletions
diff --git a/include/tak.h b/include/tak.h
index f6cde6a..a398b51 100644
--- a/include/tak.h
+++ b/include/tak.h
@@ -22,12 +22,12 @@ typedef uint16_t colour_stack_t;
 #define COUNT_AT(l) (celldat[(l)] >> NUM_SHIFT)
 #define THE_COORDS(col,row) ((col)+(row)*board_size)
 
-enum WIN_TYPE won;
-uint8_t board_size;
-data_t celldat[36];
-colour_stack_t colours[36];
-enum COLOUR current_colour;
-uint8_t white_count, black_count, ply;
+extern enum WIN_TYPE won;
+extern uint8_t board_size;
+extern data_t celldat[36];
+extern colour_stack_t colours[36];
+extern enum COLOUR current_colour;
+extern uint8_t white_count, black_count, ply;
 
 void reset_state(const uint8_t new_board_size);
 void next_ply(void);