fix build for non-displayio & non-protomatter targets

Author: jepler

shared-module/displayio/__init__.c

@@ -21,6 +21,7 @@
 
 primary_display_t displays[CIRCUITPY_DISPLAY_LIMIT];
 
+#if CIRCUITPY_PROTOMATTER
 STATIC bool any_display_uses_this_protomatter(protomatter_protomatter_obj_t* pm) {
     for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
         if (displays[i].framebuffer_display.base.type == &framebufferio_framebufferdisplay_type) {
@@ -32,6 +33,7 @@ STATIC bool any_display_uses_this_protomatter(protomatter_protomatter_obj_t* pm)
     }
     return false;
 }
+#endif
 
 // Check for recursive calls to displayio_background.
 bool displayio_background_in_progress = false;

supervisor/shared/display.c

@@ -29,12 +29,15 @@
 #include <string.h>
 
 #include "py/mpstate.h"
-#include "shared-module/displayio/__init__.h"
 #include "shared-bindings/displayio/Group.h"
 #include "shared-bindings/displayio/Palette.h"
 #include "shared-bindings/displayio/TileGrid.h"
 #include "supervisor/memory.h"
 
+#if CIRCUITPY_PROTOMATTER
+#include "shared-module/displayio/__init__.h"
+#endif
+
 extern size_t blinka_bitmap_data[];
 extern displayio_bitmap_t blinka_bitmap;
 extern displayio_group_t circuitpython_splash;