## Choose only on of the possible target types
# image=disk.img
# squash=rootfs.squash
raspi=retropie.img

## Image size in MB. Needs to be able to hold all software.
# imagesize=3072
imagesize=4096

## Additional packages
# packages:=chromium-browser,ssh,lsb-release
# packages=supertuxkart/buster,libc-bin/buster,libc6/buster,libopenal1/buster,locales/buster
packages=ssh lsb-release bison bluetooth build-essential cmake dialog fbi fbset flex g++ gcc git libasound2-dev libavcodec-dev libavdevice-dev libavformat-dev libcurl4-openssl-dev libfreeimage-dev libfreetype6-dev libgles2-mesa-dev libraspberrypi-dev libsdl2-2.0-0 libsdl2-dev libsm-dev libudev-dev libusb-1.0-0-dev libvlccore-dev libvlc-dev libx11-xcb-dev libxkbcommon-dev mc python-dbus python-gobject python-pyudev rapidjson-dev samba vlc xmlstarlet omxplayer insserv libfftw3-single3 alsa-utils

## Debian release, so far only stretch has been tested
release=stretch

## Comma separated list of config modules from modules/ directory
modules=approx,autoresize #,display_ws5inch # nodm,xfce
approxhost:=localhost:9000

## Hostname for the generated machine
hostname=retropie

## Root password will be salted and encrypted in image
rootpass=root

## The corresponding .pub file for the given rootkey will be applied as
## SSH login file for the root user.
## If the pub file is not found, a new key pair will be generated
rootkey=image_ssh

## Comma separated list of users to be set up.
## User logins will start out with an empty password
## If the live module is in use, users will also be added to the sudo group
# users=adam,steve
users=rpi

## Wifi configuration, if a Wifi password is given, WPA encryption will be used
## without the password, the system will try to connect to an open wifi
# wifi=berlin.freifunk.net
# wifi=MyWiFi
# wifipass=P4ssW0rD

## Timezone as offered by Debians tzdata selection
timezone=Europe/Berlin

## Comma separated list of locales, first one will become default locale
# locales=de_DE.UTF-8,en_US.UTF-8
locales=en_US.UTF-8

## If nodm is installed, you can choose a user to login automatically
## If no user is given here, then nodm will default to root
nodm_user=rpi

## In nodm, use full screen chromium web browser as session
# webui=http://localhost/

## When using NIS modules the directory server should be given
# nis_server=nismaster

## If the approxmodule is enabled, then one (and only one) apt-source
## can be choosen to install packages from
## See modules/approx.mk if you need more flexibility
# approx=http://localhost:9000/debian

CFGROOT := img_mount/

_target: ${CFGROOT}/etc/sudoers.d/nopassword _retropie _vc4driver _groups _autologin | _config

_retropie: ${CFGROOT}/opt/RetroPie-Setup/  # ${CFGROOT}/opt/retropie/

RetroPie-Setup/:
	[ ! -d "$@" ] && git clone --depth=1 https://github.com/RetroPie/RetroPie-Setup.git

${CFGROOT}/opt/RetroPie-Setup/: RetroPie-Setup/ | _config
	cp -au "$<" "$@"

# ${CFGROOT}/opt/retropie/: retropie/ | _config
# 	-cp -au "$<" "$@"

_vc4driver: | _config
	sed -Ei 's;^ *dtoverlay=vc4-fkms-v3d;# &;' ${CFGROOT}/boot/config.txt

${CFGROOT}/etc/sudoers.d/nopassword: | _config
	printf '%%sudo ALL=NOPASSWD: ALL\n' >"$@"
	chmod 440 "$@"

_groups: _users | _config
	chroot "$${CFGROOT}" adduser rpi sudo
	chroot "$${CFGROOT}" adduser rpi input
	chroot "$${CFGROOT}" adduser rpi video

_autologin: ${CFGROOT}/etc/systemd/system/getty@tty1.service.d/override.conf ${CFGROOT}/etc/profile.d/retropie_autostart.sh
${CFGROOT}/etc/systemd/system/getty@tty1.service.d/override.conf: | _config
	mkdir -p ${CFGROOT}/etc/systemd/system/getty@tty1.service.d/
	printf '[Service]\nExecStart=\nExecStart=-/sbin/agetty --autologin %s --noclear %%I $$TERM' \
		rpi >$@

${CFGROOT}/etc/profile.d/retropie_autostart.sh: | _config
	printf '%s\n' '[ "$$USER" = rpi ] && \\' \
			'if which emulationstation; then' '  emulationstation' \
			'else' '  sudo /opt/RetroPie-Setup/retropie_setup.sh' 'fi' \
		>"$@"

define RPICONFIG :=
dtparam=audio=on
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256
overscan_scale=1
endef