BUILDDIR := build
SOURCEDIR := src
OBJECTDIR := obj

NAME := bozOS

AS := i386-elf-as
ASFLAGS := 
CC := i386-elf-gcc
CCFLAGS := -std=gnu99 -ffreestanding -O2 -Wall -Wextra -iquotelibbozo/headers -iquoteheaders -g
LD := $(CC)
LDFLAGS := -T boot/linker.ld -ffreestanding -O2 -nostdlib
LIBS := -L libbozo/build/ -lbozo -lgcc

SSRC := $(shell find $(SOURCEDIR) -name '*.s')
CSRC := $(shell find $(SOURCEDIR) -name '*.c')
OBJ := $(patsubst $(SOURCEDIR)/%.c,$(OBJECTDIR)/%.o,$(CSRC))\
	$(patsubst $(SOURCEDIR)/%.s,$(OBJECTDIR)/%.o,$(SSRC))


all: $(NAME)

$(OBJECTDIR)/%.o: $(SOURCEDIR)/%.s
	mkdir -p $(dir $@)
	$(AS) $(ASFLAGS) $< -o $@

$(OBJECTDIR)/%.o: $(SOURCEDIR)/%.c
	mkdir -p $(dir $@)
	$(CC) $(CCFLAGS) -c $< -o $@

$(NAME): $(OBJ)
	make -C libbozo
	mkdir -p $(BUILDDIR)/
	$(LD) $(LDFLAGS) -o $(BUILDDIR)/$(NAME).bin $(OBJ) $(LIBS)

run: $(NAME)
	qemu-system-i386 -kernel $(BUILDDIR)/$(NAME).bin

iso: $(NAME)
	mkdir -p isodir/boot/grub
	cp $(BUILDDIR)/$(NAME).bin isodir/boot/bozOS.bin
	cp config/grub.cfg isodir/boot/grub/grub.cfg
	grub-mkrescue -o $(BUILDDIR)/bozOS.iso isodir
	rm -rf isodir

run_iso: iso
	qemu-system-i386 -cdrom $(BUILDDIR)/bozOS.iso

debug: iso
	qemu-system-i386 -s -S $(BUILDDIR)/bozOS.iso

clean:
	make -C libbozo clean
	rm -rf $(OBJDIR)

fclean: clean
	make -C libbozo fclean
	rm -rf $(BUILDDIR)/

re: fclean all

.PHONY: all clean fclean re run iso run_iso