Makefile.postfix

## Postfix: Makefile to update *.db files

POSTCONF=	/usr/sbin/postconf
POSTMAP=	/usr/sbin/postmap

default: postmap

postmap: Makefile.postmap
	@echo 'Updating database files ...'
	$(MAKE) -f Makefile.postmap

Makefile.postmap: main.cf
	@echo 'Updating $@ ...'
	@set -e; \
	rm -f $@.$$$$.tmp; \
	echo 'POSTMAP=$(POSTMAP)' >>$@.$$$$.tmp; \
	echo 'postmap::' >>$@.$$$$.tmp; \
	config_directory="$(PWD)"; \
	{ $(POSTCONF) -c $(PWD) || kill $$$$; } \
	|tr ' ' '\n' \
	|sed -n \
	  -e 's/,$$//' \
	  -e 's#^hash:\$$config_directory/##p' \
	  -e 's#^hash:'"$$config_directory/##p" \
	|sort -u \
	|while read mapfile; do \
	  echo "postmap:: $$mapfile.db" >>$@.$$$$.tmp; \
	  echo "$$mapfile.db: $$mapfile" >>$@.$$$$.tmp; \
	  echo "	\$$(POSTMAP) $$<" >>$@.$$$$.tmp; \
	done; \
	mv $@.$$$$.tmp $@