Index: plug_io.h
===================================================================
--- plug_io.h	(revision 4605)
+++ plug_io.h	(revision 4606)
@@ -166,6 +166,6 @@
     %N    name of the current pcb
     %T    wall time (Epoch)
 */
-int pcb_build_fn_cb(gds_t *s, const char **input);
+int pcb_build_fn_cb(void *ctx, gds_t *s, const char **input);
 
 #endif