Index: layer.h
===================================================================
--- layer.h	(revision 29890)
+++ layer.h	(revision 29891)
@@ -272,6 +272,9 @@
 
 /**** layer creation (for load/import code) ****/
 
+/* Set parent and attribute change callback */
+void pcb_layer_setup(pcb_layer_t *ly, pcb_data_t *parent_data);
+
 /* Reset layers and layer groups to empty */
 void pcb_layers_reset(pcb_board_t *pcb);