# Defaults
my_arch     != uname -m

# Settables
arch        ?= $(my_arch)
conf        ?= GENERIC
target      ?= targets/$(arch)/$(conf)
srctree     ?= $(target)/world
worktree    ?= $(target)/tree
boot_pad    ?= 1280
cardsize    ?= 524288

# Generation scripts
gentree      = script/gentree
genufs       = script/genufs
geniso       = script/geniso
genuzip      = script/genuzip
gencard      = script/gencard

# Image utilities
makefs      != which makefs
makefs_opts ?= -t ffs -o version=2,optimization=space -b 8 -f 8
tunefs      != which tunefs
mkuzip      != which mkuzip
mkuzip_opts ?= -s 65536
mkisofs     != which mkisofs
mkisofs_opts?= -quiet -D -R -no-pad -p CyberLeo

# Default device for burn target
dev         ?= null

# Check current user
curruser    != id -u
checkroot    = @if [ $(curruser) -gt 0 ]; then printf "\033[1;31mI need root\033[0m\n"; exit 1; fi
checkdeps    = @if [ ! -x "$(mkisofs)" -o ! -x "$(mkuzip)" ]; then printf "\033[1;31mCheck depends! mkisofs: $(mkisofs) mkuzip: $(mkuzip)\033[0m\n"; exit 1; fi

# Default target
all: $(worktree)/card.img

image: $(worktree)/card.img

firmware: $(worktree)/card.img

# Check that we're running as root
checkroot:
	$(checkroot)

# Burn to device
burn: $(worktree)/card.img
	$(checkroot)
	script/burn $(.ALLSRC) $(dev)

# Push to build target
push:
	script/push cyberleo@sc1425:mosi/

# Generate components
$(worktree)/card.img: $(worktree)/boot.img $(worktree)/root.img
	$(checkroot)
	${gencard} -b $(worktree)/boot.img -r $(worktree)/root.img -c $(worktree)/conf -s ${cardsize} -o $(worktree)/card.img
	@printf " \033[1;32m*\033[0m Complete\n"

$(worktree)/boot.img: $(worktree)/boot
	$(checkroot)
	#${genufs} -p $(boot_pad) -l boot -o $(worktree)/boot.img $(worktree)/boot
	${makefs} ${makefs_opts} $(worktree)/boot.img $(worktree)/boot
	${tunefs} -L boot $(worktree)/boot.img

$(worktree)/root.img: $(worktree)/root.iso
	$(checkroot)
	$(checkdeps)
	${genuzip} $(.ALLSRC) $(.TARGET)

$(worktree)/root.iso: $(worktree)/root
	$(checkroot)
	$(checkdeps)
	${geniso} -n root $(.ALLSRC) $(.TARGET)

$(worktree): $(worktree)/root

$(worktree)/boot: $(srctree)/root
	$(checkroot)
	$(gentree) -a $(arch) -c $(conf)

$(worktree)/root: $(srctree)/root
	$(checkroot)
	$(gentree) -a $(arch) -c $(conf)

# Scrub everything clean
clean:
	$(checkroot)
	sh -c 'if ! rm -Rf $(worktree); then chflags -R noschg $(worktree); rm -Rf $(worktree); fi'