Original commit message from CVS:
try fix distcheck for FC3
.libs/$(DOC_MODULE)-scan.o \
$(DOC_MODULE).signals
-# FC3 seems to need this to clean up the built source;
+# FC3 seems to need -scan.c to be part of CLEANFILES for distcheck
# no idea why FC4 can do without
-BUILT_SOURCES = $(DOC_MODULE)-scan.c
-
-CLEANFILES = $(SCANOBJ_FILES) $(DOC_MODULE)-unused.txt $(DOC_STAMPS)
+CLEANFILES = $(SCANOBJ_FILES) $(DOC_MODULE)-unused.txt $(DOC_STAMPS) $(DOC_MODULE)-scan.c
if ENABLE_GTK_DOC
all-local: html-build.stamp