Source
PATCHES = double.sql
EXTRA_DIST = $(PATCHES)
if DBSCHEMA
GENPATCHES = history_pk_prepare.sql
CLEANFILES = $(GENPATCHES)
EXTRA_DIST += $(GENPATCHES)
all: $(GENPATCHES)
history_pk_prepare.sql: $(top_srcdir)/create/bin/gen_history_pk.pl
$(top_srcdir)/create/bin/gen_history_pk.pl postgresql > $@
.PHONY: all
endif