-DOC_FILES = index.html usage.html parser.html interface.html links.html
-VERSIONED_FILES = index.html
-EXTRA_DIST = $(DOC_FILES)
+DOC_FILES = index.html usage.html parser.html interface.html links.html \
+ encoding.html gom.html
+GENERATED_DOC_FILES = gomxref.html utf8tools.html
+DOC_GEN = make_gom_xref
+EXTRA_DIST = $(DOC_FILES) $(DOC_GEN) index.html.in $(GENERATED_DOC_FILES)