#!/usr/bin/make -f
# 2018 Luke Shumaker

# Runtime/user options #########################################################
GITREV  ?= systemd/master
WORKDIR ?= workdir

################################################################################
# Main                                                                         #
################################################################################

# Configure Make ###############################################################

.ONESHELL:
SHELL = bash
.SHELLFLAGS = -veE -o pipefail -c
.SILENT:

.DELETE_ON_ERROR:
.SECONDARY:

.DEFAULT_GOAL = check

################################################################################

.PHONY: FORCE

# git ##########################################################################
${WORKDIR}/systemd.git: FORCE
	mkdir -p -- '$(@D)'
	gitget bare https://git.parabola.nu/~lukeshu/systemd.git '$@'
	test -d '$@'
	touch '$@'

${WORKDIR}/.COMMIT.mk: ${WORKDIR}/systemd.git
	( cd $< && git rev-parse --verify '${GITREV}' ) | sed 's/^/COMMIT=/' | ./write-ifchanged '$@'
-include ${WORKDIR}/.COMMIT.mk

check: ${WORKDIR}/build-232/pkgdest
check: ${WORKDIR}/build-$(COMMIT)/pkgdest
check: ${WORKDIR}/build-$(COMMIT)/integration-tests.log
.PHONY: check

# osi-mk base images ###########################################################
${WORKDIR}/base.raw: osi-mk.d/systemd-osi-shell.sh
${WORKDIR}/base.raw:
	rm -f -- '$@' '$@.tmp'
	mkdir -p -- '$(@D)'
	./osi-mk \
		--size=2G \
		--package='base' \
		$(addprefix --module=,$(filter osi-mk.d/%.sh,$^)) \
		'$@.tmp'
	mv -T -- '$@.tmp' '$@'

${WORKDIR}/build.raw: ${WORKDIR}/base.raw
${WORKDIR}/build.raw: osi-mk.d/libretools.sh
${WORKDIR}/build.raw: osi-mk.d/builddeps.sh
${WORKDIR}/build.raw: osi-mk.d/systemd-dhcpcd.sh
${WORKDIR}/build.raw:
	rm -f -- '$@' '$@.tmp'
	./osi-mk \
		--edit='$(filter %.raw,$^)' \
		--size=3G \
		$(addprefix --module=,$(filter osi-mk.d/%.sh,$^)) \
		'$@.tmp'
	./osi-shell '$@.tmp' <<-'EOF'
		su testuser || exit
		set -e
		libreblacklist update
		sudo librechroot make
		EOF
	mv -T -- '$@.tmp' '$@'

# build systemd ################################################################

# build systemd 232
${WORKDIR}/build-232/build.raw: ${WORKDIR}/build.raw
${WORKDIR}/build-232/build.raw: osi-mk.d/testuser.sh
${WORKDIR}/build-232/build.raw: abs/systemd-232 $(wildcard abs/systemd-232/*)
${WORKDIR}/build-232/build.raw: | ${WORKDIR}/systemd.git
${WORKDIR}/build-232/build.raw:
	rm -f -- '$@' '$@.tmp'
	mkdir -p -- '$(@D)'
	./osi-mk \
		--edit='$(filter %.raw,$^)' \
		--size=4G \
		$(addprefix --module=,$(filter osi-mk.d/%.sh,$^)) \
		--directory='${WORKDIR}/systemd.git:/home/testuser/packages/srcdest/systemd' \
		--directory='abs/systemd-232:/home/testuser/packages/abs/systemd' \
		'$@.tmp'
	mv -T -- '$@.tmp' '$@'
${WORKDIR}/build-232/build.log: %/build.log: %/build.raw
	./osi-shell '$<' <<-'EOF' |& tee '$@.tmp'
		su testuser || exit
		set -e
		cd ~/packages/abs/systemd
		sudo librechroot sync # on rebuild the downgrade in [repo] will confuse chcleanup
		sudo libremakepkg
		EOF
	mv -T -- '$@.tmp' '$@'
	touch -- '$@'

# build the code under test
${WORKDIR}/build-$(COMMIT)/build.raw: ${WORKDIR}/build.raw
${WORKDIR}/build-$(COMMIT)/build.raw: osi-mk.d/testuser.sh
${WORKDIR}/build-$(COMMIT)/build.raw: abs/systemd $(wildcard abs/systemd/*)
${WORKDIR}/build-$(COMMIT)/build.raw: | ${WORKDIR}/systemd.git
${WORKDIR}/build-$(COMMIT)/build.raw: | ${WORKDIR}/.COMMIT.mk
	rm -f -- '$@' '$@.tmp'
	mkdir -p -- '$(@D)'
	./osi-mk \
		--edit='$(filter %.raw,$^)' \
		--size=4G \
		$(addprefix --module=,$(filter osi-mk.d/%.sh,$^)) \
		--directory='${WORKDIR}/systemd.git:/home/testuser/packages/srcdest/systemd' \
		--directory='abs/systemd:/home/testuser/packages/abs/systemd' \
		'$@.tmp'
	mv -T -- '$@.tmp' '$@'
${WORKDIR}/build-$(COMMIT)/build.log: %/build.log: %/build.raw
	./osi-shell '$<' <<-'EOF' |& tee '$@.tmp'
		su testuser || exit
		set -e
		cd ~/packages/abs/systemd
		sed 's:@COMMIT@:${COMMIT}:' < PKGBUILD.in > PKGBUILD
		sudo libremakepkg
		EOF
	mv -T -- '$@.tmp' '$@'
	touch -- '$@'

%/pkgdest: %/build.log
	rm -rf -- '$@'
	./osi-extract '$*/build.raw' /home/testuser/packages/pkgdest '$@'
	test -d '$@'
	touch '$@'

# tests ########################################################################

%/integration-tests.raw: %/build.raw %/build.log
	rm -f -- '$@' '$@.tmp'
	./osi-mk \
		--edit='$(filter %.raw,$^)' \
		--size=10G \
		--package=base-devel \
		--package=qemu \
		--package=net-tools \
		--package=dhclient \
		--package=strace \
		'$@.tmp'
	./osi-shell '$@.tmp' <<-'EOF'
		bsdtar xfO /home/testuser/packages/srcpkgdest/systemd-*.src.tar.gz systemd/.SRCINFO |
		    sed -nE -e 's/^\s+(|make|check)depends(|_\S*) = //p' -e '/^\s*pkgname/q' |
		    xargs pacman -S --needed --noconfirm --
		EOF
	mv -T -- '$@.tmp' '$@'
%/integration-tests.log: %/integration-tests.raw
	./osi-shell '$<' <<-'EOF' |& tee '$@.tmp'
		set -e
		mkdir -p /build
		mount --bind /var/lib/archbuild/default/testuser/build /build
		export BUILD_DIR=/build/systemd/src/build
		export KERNEL_BIN=/boot/vmlinuz-linux-libre
		export INITRD=/boot/initramfs-linux-libre.img
		cd /build/systemd/src/systemd
		./test/run-integration-tests.sh
		EOF
	mv -T -- '$@.tmp' '$@'
	touch -- '$@'