+else
+if HAVE_GOB2
+ @echo "ERROR: *** $(GOB2) does not support dynamic types." 1>&2
+else
+ @echo "ERROR: *** gob2 is missing on your system." 1>&2
+endif
+ @:; { \
+ echo " *** Because of this, I cannot compile $<, but"; \
+ echo " *** (perhaps because you modified it) the sources appear out of date."; \
+ echo " *** A newer version of gob2 may be required; the latest version"; \
+ echo " *** may be found at <https://draconx.ca/projects/gob-dx/>."; \
+ echo " *** See config.log for more details."; \
+ } 1>&2
+ @false
+endif