add globals for connection/screen

Makefile

@@ -9,7 +9,7 @@ ALL_LDFLAGS = $(LDFLAGS) $(LIBS) -lxcb
 CC = cc
 
 OBJ = src/event.o src/sowm.o
-HDR = src/event.h
+HDR = src/event.h src/globals.h
 
 .c.o:
 	$(CC) $(ALL_CFLAGS) -c -o $@ $<