+DOC_SOURCES = $(filter-out $(MAN_PAGE_SOURCES) $(MAN_PAGE_INCLUDES),$(wildcard doc/*.txt))
+DOCS = $(patsubst doc/%.txt,files/%.html,$(DOC_SOURCES))
+DOC_SIDE_EFFECTS = files/docbook-xsl.css
+EXTRA_DIST = $(MAN_PAGES) $(DOCS) $(DOC_SIDE_EFFECTS)
+GENERATED_FILES = $(MAN_PAGES) $(MAN_PAGE_INCLUDES) $(DOCS) $(DOC_SIDE_EFFECTS)