+###--------------------------------------------------------------------------
+### Manpage substitutions.
+
+SUFFIXES += .1 .1.in
+SUFFIXES += .5 .5.in
+SUFFIXES += .7 .7.in
+SUFFIXES += .8 .8.in
+
+mandefs = $(top_srcdir)/common/defs.man
+makesummary = $(top_srcdir)/common/make-summary
+
+.1.in.1 .5.in.5 .7.in.7 .8.in.8:
+ sed '/^\.$$/ d; /^\.\\"/ d' $(mandefs) >$@.defs
+ sed -e '/@@@PRE@@@/ {' -e 'r$@.defs' -e 'd' -e '}' $< >$@.merge
+ $(confsubst) $@.merge >$@.subst $(SUBSTITUTIONS)
+ awk -f $(makesummary) $@.subst >$@.new
+ rm -f $@.defs $@.merge $@.subst && mv $@.new $@
+