HERE := $(PWD)
DOWNLOAD_ROOT := http://ftp.postgresql.org/pub/source/
PG_VERSION := 9.1.4
TARBALL_BASENAME := postgresql-$(PG_VERSION)
TARBALL_URL := $(DOWNLOAD_ROOT)/v$(PG_VERSION)/$(TARBALL_BASENAME).tar.bz2

all: $(HERE)/bin/pg_ctl $(HERE)/data $(HERE)/log

start: $(HERE)/bin/pg_ctl $(HERE)/data $(HERE)/log
	$(HERE)/bin/pg_ctl start -D $(HERE)/data -l $(HERE)/log/postgres.log

stop: $(HERE)/bin/pg_ctl $(HERE)/data $(HERE)/log
	$(HERE)/bin/pg_ctl stop -D $(HERE)/data

restart: $(HERE)/bin/pg_ctl $(HERE)/data $(HERE)/log
	$(HERE)/bin/pg_ctl restart -D $(HERE)/data

$(TARBALL_BASENAME).tar.bz2:
	curl -L -O $(TARBALL_URL)

$(TARBALL_BASENAME): $(TARBALL_BASENAME).tar.bz2
	tar xjvf $<

$(TARBALL_BASENAME)/Makefile: $(TARBALL_BASENAME)
	cd $< && ./configure --prefix=$(HERE)

$(HERE)/bin/postgres: $(TARBALL_BASENAME)/Makefile
	cd $(TARBALL_BASENAME) && \
		make && \
		make install

$(HERE)/data:
	mkdir -p $@

$(HERE)/log:
	mkdir -p $@