-.asc.html:
- a2x --doctype manpage --format xhtml -D . $<
- rm -f docbook-xsl.css
-
-advent-$(VERS).tar.gz: $(SOURCES) advent.6
- tar --transform='s:^:advent-$(VERS)/:' --show-transformed-names -cvzf advent-$(VERS).tar.gz $(SOURCES) advent.6
-
-dist: advent-$(VERS).tar.gz
-
-release: advent-$(VERS).tar.gz advent.html
+.adoc.html:
+ asciidoc $<
+.adoc:
+ asciidoc $<
+
+html: advent.html history.html hints.html
+
+# README.adoc exists because that filename is magic on GitLab.
+DOCS=COPYING NEWS README.adoc TODO advent.adoc history.adoc hints.adoc advent.6
+TESTFILES=tests/*.log tests/*.chk tests/README tests/decheck tests/Makefile
+
+# Can't use GNU tar's --transform, needs to build under Alpine Linux.
+# This is a requirement for testing dist in GitLab's CI pipeline
+advent-$(VERS).tar.gz: $(SOURCES) $(DOCS)
+ @find $(SOURCES) $(DOCS) $(TESTFILES) -print | sed s:^:advent-$(VERS)/: >MANIFEST
+ @(ln -s . advent-$(VERS))
+ (tar -T MANIFEST -czvf advent-$(VERS).tar.gz)
+ @(rm advent-$(VERS))
+
+release: advent-$(VERS).tar.gz advent.html history.html hints.html