diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..251c770
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,107 @@
+#!/usr/bin/make -f
+# -*- makefile -*-
+# ex: set tabstop=4 noexpandtab:
+# -*- coding: utf-8 -*-
+#
+# SPDX-License: ISC
+# SPDX-License-URL: https://spdx.org/licenses/ISC.html
+
+default: help all
+	@echo "# https://github.com/yjwen/org-reveal"
+
+
+srcs?=$(wildcard *.org | sort)
+objs?=${srcs:.org=.html}
+target?=$(shell echo ${srcs:.org=} | head -n1)
+reveal_url?=https://github.com/hakimel/reveal.js/
+reveal_zip_url?=https://github.com/hakimel/reveal.js/archive/master.zip
+reveal_dir?=./reveal.js
+sudo?=sudo
+
+
+help:
+	@echo "# Usage:"
+	@echo "#  make help # Usage"
+	@echo "#  make setup # Install tools"
+	@echo "#  make all # Build html"
+	@echo "#  make start # View HTML in Web browser"
+	@echo "#  make download # Download deps"
+	@echo "#  make setup/debian setup download start # ..."
+	@echo "# Config:"	
+	@echo "#  srcs=${srcs}"
+	@echo "#  objs=${objs}"
+	@echo "#  target=${target}"
+
+all: ${objs}
+	ls $^
+
+download: ${reveal_dir}
+
+start: ${target}.html
+	x-www-browser $<
+
+clean:
+	rm -rfv *~ */*/*~ tmp tmp.*
+
+cleanall: clean
+	find . -iname "*.html" -exec rm -v "{}" \;
+
+setup/debian: /etc/debian_version
+	-${sudo} apt-get update
+	${sudo} apt-get install -y \
+ emacs \
+ git \
+ sudo \
+ unzip \
+ wget \
+ # EOL
+
+setup: /etc/os-release
+	@echo "# Please install tools, On debian: make setup/debian"
+	emacs \
+ --no-init-file  \
+ --user ${USER} \
+ --batch \
+ --eval="(require 'package)" \
+ --eval="(add-to-list 'package-archives \
+  '(\"melpa\" . \"https://melpa.org/packages/\"))" \
+ --eval='(setq gnutls-algorithm-priority "NORMAL:-VERS-TLS1.3")' \
+ --eval="(package-initialize)" \
+ --eval="(package-show-package-list)" \
+ --eval="(package-refresh-contents)" \
+ --eval="(package-list-packages)" \
+ --eval="(package-install 'org)" \
+ --eval="(package-install 'htmlize)" \
+ --eval="(package-install 'ox-reveal)" \
+# EOL
+
+%.html: %.org Makefile
+	cd ${<D} \
+&& \
+ emacs \
+ --no-init-file\
+ --user ${USER} \
+ --batch \
+ --eval="(require 'org)" \
+ --eval="(require 'org-gnus)" \
+ --eval="(require 'ox-reveal)" \
+ --find-file "${<F}" \
+ --funcall org-reveal-export-to-html \
+ # EOL
+
+html: ${target}.html
+	ls $<
+
+all/%: ${srcs}
+	for src in $^ ; do \
+    dir=$$(dirname -- "$${src}") ; \
+    make target="$${dir}/index" ${@F} \
+    || exit $$? ; \
+  done
+
+${reveal_dir}:
+	@mkdir -p ${@D}
+	wget -O- ${reveal_zip_url} > reveal.js.zip
+	unzip reveal.js.zip
+	mv reveal.js-master ${@}
+	@rm -f tmp.zip