AS = nasm
CC = clang
CFILES = $(shell find src/ -name "*.c")
OFILES = $(CFILES:.c=.o)

LDFLAGS = -nostdlib -Tlink.ld -no-pie
CFLAGS = -ffreestanding -nostdinc -fno-pic -mno-sse -mno-sse2 \
		 -mno-mmx -mno-80387 -fno-stack-protector

.PHONY: all
all: $(OFILES) stage1.bin stage2.bin
	cat stage1.bin stage2.bin >boot.bin

.PHONY: stage1.bin
stage1.bin:
	$(AS) -fbin mbr/stage1.asm -o $@

.PHONY: stage2.bin
stage2.bin:
	$(CC) $(LDFLAGS) $(OFILES) -o $@

%.o: %.c
	$(CC) -c $(CFLAGS) $< -o $@

.PHONY: test
test:
	qemu-system-i386 -hda boot.bin --enable-kvm