+#ifndef MACRO_PREDEF
+
+gstring *
+auth_show_supported(gstring * g)
+{
+g = string_cat(g, US"Authenticators:");
+for (auth_info * ai = auths_available; ai->driver_name[0]; ai++)
+ g = string_fmt_append(g, " %s", ai->driver_name);
+return string_cat(g, US"\n");
+}
+
+gstring *
+route_show_supported(gstring * g)
+{
+g = string_cat(g, US"Routers:");
+for (router_info * rr = routers_available; rr->driver_name[0]; rr++)
+ g = string_fmt_append(g, " %s", rr->driver_name);
+return string_cat(g, US"\n");
+}
+
+gstring *
+transport_show_supported(gstring * g)