+# Use bash, and run all lines in each recipe as one shell command
+SHELL := /bin/bash
+.ONESHELL:
+
+APP_NAME?=arvados-workbench2
+
+# GIT_TAG is the last tagged stable release (i.e. 1.2.0)
+GIT_TAG?=$(shell git describe --abbrev=0)
+
+# TS_GIT is the timestamp in the current directory (i.e. 1528815021).
+# Note that it will only change if files change.
+TS_GIT?=$(shell git log -n1 --first-parent "--format=format:%ct" .)
+
+# DATE_FROM_TS_GIT is the human(ish)-readable version of TS_GIT
+# 1528815021 -> 20180612145021
+DATE_FROM_TS_GIT?=$(shell date -ud @$(TS_GIT) +%Y%m%d%H%M%S)
+
+# VERSION uses all the above to produce X.Y.Z.timestamp
+# something in the lines of 1.2.0.20180612145021, this will be the package version
+# it can be overwritten when invoking make as in make packages VERSION=1.2.0
+VERSION?=$(GIT_TAG).$(DATE_FROM_TS_GIT)
+
+# ITERATION is the package iteration, intended for manual change if anything non-code related
+# changes in the package. (i.e. example config files externally added
+ITERATION?=1
+
+DESCRIPTION=Arvados Workbench2 - Arvados is a free and open source platform for big data science.
+MAINTAINER=Ward Vandewege <wvandewege@veritasgenetics.com>
+
+# DEST_DIR will have the build package copied.
+DEST_DIR=/var/www/arvados-workbench2/workbench2/
+
+# Debian package file
+DEB_FILE=$(APP_NAME)_$(VERSION)-$(ITERATION)_amd64.deb
+
+# redHat package file
+RPM_FILE=$(APP_NAME)-$(VERSION)-$(ITERATION).x86_64.rpm
+