.include "../../x11/gtk2/buildlink3.mk"
before to the line
+BUILDLINK_DEPTH:= ${BUILDLINK_DEPTH:S/+$//}
Now pkglint says:
looks fine.
Thanks obache San,
included.
2. Buildlink3.mk now includes gtk2's buildlink3.mk as well.
3. Using tabs, not spaces to align variable assignments in
Makefile.
(As suggested by Tobias Nygren .. Thanks a million)