CC=gcc
ASM=nasm
LINK=ld
ISO=genisoimage

OBJECTS=mem.o kernel.o gdt_seg.o gdt.o interrupts.o loader.o serial.o \
		framebuffer.o ports.o stlio.o tests.o interrupt_entry.o
AFLAGS=-f elf32
CFLAGS=-masm=intel -O2 -m32 -nostdlib -nostdinc -fno-builtin -fno-stack-protector -nostartfiles \
		-nodefaultlibs -Wall -Wextra -c #-Werror -c

all: kernel.elf

# Link objects together to produce the kernel object
kernel.elf: $(OBJECTS)
	$(LINK) -T link.ld -melf_i386 $(OBJECTS) -o kernel.elf

# Builds image of our os
os.iso: kernel.elf
	cp kernel.elf iso/boot/kernel.elf
	$(ISO) -R							\
		-b boot/grub/stage2_eltorito    \
		-no-emul-boot                   \
		-boot-load-size 4               \
		-A os                           \
		-input-charset utf8             \
		-quiet                          \
		-boot-info-table                \
		-o os.iso                       \
		iso

# Builind asm objects
%.o: %.s
	$(ASM) $(AFLAGS) $< -o $@

# Building C objecets
%.o: %.c
	$(CC) $(CFLAGS) $< -o $@

# Running (no recipes called) 
run: os.iso
	bochs -f bochsrc.conf -q 

clean:
	rm -rf *.o kernel.elf os.iso bochslog.txt