.PHONY: control

VERSION=0.6.2
BASENAME=tensorflow

help:
	@echo
	@echo "make all     # to attempt to download, extract and build the .deb package using dpkg"
	@echo

all: download clean extract DEBIAN build

build-deb:
	# apt install -y gcc g++ git gnupg make zip unzip
	# pip install tensorflow
	# this actually seems to work:
	pip install tf-nightly-cpu

build:
	apt install python3-dev python3-pip
	pip install -U --user pip numpy wheel packaging requests opt_einsum
	pip install -U --user keras_preprocessing --no-deps
	apt install bazel
	mkdir ~/tmp; cd ~/tmp/ && git clone https://github.com/tensorflow/tensorflow.git
	./configure
	bazel build [--config=option] //tensorflow/tools/pip_package:build_pip_package # for cpu support
	bazel build --config=cuda [--config=option] //tensorflow/tools/pip_package:build_pip_package # for gpu support
	./bazel-bin/tensorflow/tools/pip_package/build_pip_package --nightly_flag /tmp/tensorflow_pkg
	pip install /tmp/tensorflow_pkg/tensorflow-version

clean:
	rm -rf ../files
	rm -f ../*.deb
	rm -f ../*.tar.xz data.tar.xz
	rm -rf DEBIAN

download:
	@echo
	@echo This uses the binary /usr/local/bin/tensorflow
	@echo
	@echo pip install tensorflow

extract:
	cp -a files ../
	mkdir -p ../files/usr/bin
	cp /usr/local/bin/tensorflow ../files/usr/bin

# makes the DEBIAN/ directory
DEBIAN:
	mkdir -p DEBIAN

	# make the md5sum file
	cd ../files/ && find -type f -exec md5sum '{}' \; |sort -k2 >../md5sums
	mv ../md5sums DEBIAN/

	# make the control there
	mkdir -p DEBIAN
	cp control DEBIAN/
	# echo Version: ${VERSION} >>DEBIAN/control

	cp postinst DEBIAN

build:
	mv DEBIAN ../files/
	cd .. && dpkg-deb --build files ${BASENAME}_${VERSION}_amd64.deb
	cd .. && dpkg-deb --info ${BASENAME}_${VERSION}_amd64.deb

# how to make a debian package "raw" just using tar and ar
#
# READ THIS AGAIN:
#
# A .deb file is just output from 'ar rcs'
#
tar-ar: control
	cd DEBIAN && tar --ignore-failed-read -cvJf ../control.tar.xz .
	cd files && tar -cvJf ../data.tar.xz .
	ar rcs ${BASENAME}_${VERSION}_amd64.deb debian-binary control.tar.xz data.tar.xz
	dpkg-deb --info ${BASENAME}_${VERSION}_amd64.deb