#!/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
.PHONY: check

# osi-mk base images ###########################################################
${WORKDIR}/base.raw: osi-mk.d/systemd-osi-run.sh
${WORKDIR}/base.raw:
	rm -f -- '$@'
	mkdir -p -- '$(@D)'
	./osi-mk --size=4G --package='base' $(addprefix --module=,$(filter osi-mk.d/%.sh,$^)) '$@'

${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
${WORKDIR}/build.raw:
	rm -f -- '$@' '$@.tmp'
	cp -- '$(filter %.raw,$^)' '$@.tmp'
	./osi-mk --edit $(addprefix --module=,$(filter osi-mk.d/%.sh,$^)) '$@.tmp'
	./osi-run '$@.tmp' <<-'EOF'
		#!/usr/bin/env bash
		set -ex
		libreblacklist update
		script --return --quiet --command 'sudo librechroot make' /dev/null
		EOF
	mv -T -- '$@.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)'
	cp -- '$(filter %.raw,$^)' '$@.tmp'
	./osi-mk \
		--edit \
		$(addprefix --module=,$(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' '$@'
${WORKDIR}/build-232/build.log: %/build.log: %/build.raw
	./osi-run '$<' <<-EOF |& tee '$@.tmp'
		#!/usr/bin/env bash
		set -ex
		cd ~/packages/abs/systemd
		# sync on rebuild because the downgrade in [repo] will confuse chcleanup
		script --return --quiet --command 'sudo librechroot sync' /dev/null
		script --return --quiet --command 'sudo libremakepkg' /dev/null
		EOF
	mv -T -- '$@.tmp' '$@'

# 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)'
	cp -- '$(filter %.raw,$^)' '$@.tmp'
	./osi-mk \
		--edit \
		$(addprefix --module=,$(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-run '$<' <<-EOF |& tee '$@.tmp'
		#!/usr/bin/env bash
		set -ex
		cd ~/packages/abs/systemd
		sed 's:@COMMIT@:${COMMIT}:' < PKGBUILD.in > PKGBUILD
		script --return --quiet --command 'sudo libremakepkg' /dev/null
		EOF
	mv -T -- '$@.tmp' '$@'

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