ASM = nasm
CC = clang
LD = ld

ASMFLAGS = -f bin
CFLAGS = -m32 -ffreestanding -nostdlib -nodefaultlibs -fno-builtin -fno-stack-protector -target i386-pc-none-elf
LDFLAGS = -arch i386 -static -e _main -T linker.ld

ifeq ($(shell uname),Darwin)
	LDFLAGS = -arch i386 -static -e _main
else
	LDFLAGS = -m elf_i386 -T linker.ld
endif

all: os.bin

bootloader.bin: bootloader.asm gdt.asm print32.asm switch_pm.asm
	$(ASM) $(ASMFLAGS) bootloader.asm -o bootloader.bin

kernel.o: kernel.c
	$(CC) $(CFLAGS) -c kernel.c -o kernel.o

kernel.bin: kernel.o
	$(LD) $(LDFLAGS) kernel.o -o kernel.bin

os.bin: bootloader.bin kernel.bin
	cat bootloader.bin kernel.bin > os.bin
	truncate -s 1440K os.bin

clean:
	rm -f *.bin *.o

test: os.bin
	qemu-system-i386 -fda os.bin

usb: os.bin
	./create_usb.sh

iso: os.bin
	./build-iso.sh

docker-iso:
	./docker-build.sh && ./build-iso.sh

.PHONY: all clean test usb iso docker-iso