version	= $(shell git describe | sed -e 's|autocluster-||' -e 's|-|_|g')
rpm_top_dir = $(shell rpmbuild --showrc | \
		sed -n -e 's|^.*: _topdir[[:space:]]*||p')
rpm_dir = $(rpm_top_dir)/RPMS/noarch
tarball	= autocluster-$(version).tar.gz
rpm	= autocluster-$(version)-1.noarch.rpm


prefix	= /usr/local
datadir	= ${prefix}/share/autocluster
bindir	= ${prefix}/bin
DESTDIR	=

datas	= defaults.yml ansible vagrant
hacks	= autocluster.hack
genpkg	= debian/changelog autocluster.spec ChangeLog

all:	$(hacks)

autocluster.hack:	autocluster.py Makefile
	sed -e "s|^INSTALL_DIR = .*|INSTALL_DIR = '$(datadir)'|" $< > $@

install:	all
	mkdir -p $(DESTDIR)$(datadir)
	cp -a $(datas) $(DESTDIR)$(datadir)/
	mkdir -p $(DESTDIR)$(bindir)
	install -m 755 autocluster.hack $(DESTDIR)$(bindir)/autocluster

debian/changelog:	debian/changelog.in Makefile .git/refs/heads/master
	sed -e "s/@@DATE@@/$$(date '+%a, %e %b %Y %T %z')/" -e "s/@@VERSION@@/$(version)/" $< > $@ || rm -f $@

autocluster.spec:	autocluster.spec.in Makefile .git/refs/heads/master .git/refs/tags
	sed -e "s/@@VERSION@@/$(version)/" $< > $@ || rm -f $@

ChangeLog:	.git/HEAD
		git log > $@ || rm -f $@

dist:	$(tarball)

$(tarball):	$(genpkg)
	t=autocluster-$(version) && \
	git archive --prefix=$${t}/ HEAD > $${t}.tar && \
	tar r --transform s@^@$${t}/@ -f $${t}.tar $(genpkg) && \
	gzip -f $${t}.tar

rpm:	$(rpm)

$(rpm):	$(tarball)
	rpmbuild -tb $(tarball)
	mv $(rpm_dir)/$(rpm) $(rpm)

clean:
	rm -f $(hacks) $(genpkg)