Index: trunk/src/libcschem/extobj.h
===================================================================
--- trunk/src/libcschem/extobj.h	(revision 11166)
+++ trunk/src/libcschem/extobj.h	(revision 11167)
@@ -36,6 +36,8 @@
 	void (*conv_from)(vtp0_t *objs);        /* remove one or more objects from objs and convert them into extended object(s) */
 };
 
+extern htsp_t extobjs_impls;
+
 void csch_extobj_impl_reg(const csch_extobj_impl_t *impl);
 void csch_extobj_impl_unreg(const csch_extobj_impl_t *impl);