Fix some makefile issues, and symbol issues

visualizer.c

@@ -77,8 +77,8 @@ static remote_object_t* remote_objects[] = {
 
 #endif
 
-GDisplay* LCDDisplay;
-GDisplay* LEDDisplay;
+GDisplay* LCD_DISPLAY = 0;
+GDisplay* LED_DISPLAY = 0;
 
 
 void start_keyframe_animation(keyframe_animation_t* animation) {
@@ -437,8 +437,8 @@ void visualizer_init(void) {
     add_remote_objects(remote_objects, sizeof(remote_objects) / sizeof(remote_object_t*) );
 #endif
     // TODO: Make sure these works when either of these are disabled
-    LCDDisplay = gdispGetDisplay(0);
-    LEDDisplay = gdispGetDisplay(1);
+    LCD_DISPLAY = gdispGetDisplay(0);
+    LED_DISPLAY = gdispGetDisplay(1);
 
 
     // We are using a low priority thread, the idea is to have it run only

visualizer.mk

@@ -21,13 +21,13 @@
 # SOFTWARE.
 
 GFXLIB = $(VISUALIZER_DIR)/ugfx
-SRC += $(GFXSRC) $(VISUALIZER_DIR)/visualizer.c
+SRC += $(VISUALIZER_DIR)/visualizer.c
 UINCDIR += $(GFXINC) $(VISUALIZER_DIR)
 
 ifdef LCD_ENABLE
-include $(GFXLIB)/gfx.mk
 UDEFS += -DLCD_ENABLE
 ULIBS += -lm
+USE_UGFX = yes
 endif
 
 ifdef LCD_BACKLIGHT_ENABLE
@@ -39,6 +39,12 @@ endif
 ifdef LED_ENABLE
 SRC += $(VISUALIZER_DIR)/led_test.c
 UDEFS += -DLED_ENABLE
+USE_UGFX = yes
+endif
+
+ifdef USE_UGFX
+include $(GFXLIB)/gfx.mk
+SRC += $(GFXSRC)
 endif
 
 ifndef VISUALIZER_USER