INSTALLDIR = build

# version
VERSION := $(shell git describe --tags --always 2>/dev/null)
ifneq (,$(VERSION))
	ifneq (,$(shell git diff-index --name-only HEAD 2>/dev/null))
	VERSION := $(VERSION)-dirty
	endif
else
	$(error: Run make from a repository checkout)
endif

SCRIPTS = bpcbackup bpcbackup.crontab bpcdump esata BackupPC_ovz \
	  BackupPC_verifyPool
SCRIPTFILES = $(SCRIPTS:%=$(INSTALLDIR)/%)

all: install

install: $(INSTALLDIR) $(SCRIPTFILES)
	@echo "Install dir: $(INSTALLDIR)"
	@echo "Version: $(VERSION)"

$(INSTALLDIR):
	@mkdir -p $(INSTALLDIR)

$(SCRIPTFILES):$(INSTALLDIR)/%: % FORCE
	@sed -e 's|__appVersion__|$(VERSION)|g' < $< > $@-tmp
	@if diff -q $@-tmp $@ >/dev/null 2>&1; then \
		rm -f $@-tmp; \
	else \
		mv $@-tmp $@; \
		chmod 755 $@; \
		echo "$@"; \
	fi

clean:
	@rm -rf $(INSTALLDIR)

.PHONY: all install $(INSTALLDIR) clean FORCE