-.PHONY: $(RECURSIVE_TARGETS) GTAGS all all-am check check-am clean \
- clean-generic clean-recursive distclean distclean-generic \
- distclean-recursive distclean-tags distdir dvi dvi-am \
- dvi-recursive info info-am info-recursive install install-am \
- install-data install-data-am install-data-recursive \
- install-exec install-exec-am install-exec-recursive \
- install-info install-info-am install-info-recursive install-man \
- install-man1 install-recursive install-strip installcheck \
- installcheck-am installdirs installdirs-am \
- installdirs-recursive maintainer-clean maintainer-clean-generic \
- maintainer-clean-recursive mostlyclean mostlyclean-generic \
- mostlyclean-recursive tags tags-recursive uninstall \
- uninstall-am uninstall-info-am uninstall-info-recursive \
- uninstall-man uninstall-man1 uninstall-recursive
+maintainer-clean-am: maintainer-clean-tags maintainer-clean-generic \
+ distclean-am
+ @echo "This command is intended for maintainers to use;"
+ @echo "it deletes files that may require special tools to rebuild."