Makefile Toyos

#TODO: Update this to put everything into a build directory

BOOTOUTPUT = boot.bin
OSOUTPUT = os.bin
SRCS = $(wildcard kernel/*.c)
CINC = $(wildcard kernel/*.h)
OBJS = $(patsubst %.c, %.o, $(SRCS))

#Final step in the build process
$(OSOUTPUT): kernel.bin $(BOOTOUTPUT)
	cat $(BOOTOUTPUT) kernel.bin > $(OSOUTPUT)

#Assemble the boot sector code
$(BOOTOUTPUT): boot/bootsector.asm
	nasm -f bin boot/bootsector.asm -o $(BOOTOUTPUT)

#Compile all the kernel files
%.o:%.c $(CINC)
	gcc -m32 -ffreestanding -fno-pie -fno-stack-protector -nostdlib -c $< -o $@

#Assemble the kernel entry code
kernelEntry.o: boot/kernelEntry.asm
	nasm boot/kernelEntry.asm -f elf32 -o kernelEntry.o

#Link all the .o files with the kernel entry
kernel.bin: kernelEntry.o $(OBJS)
	ld -melf_i386 -o kernel.bin -Ttext 0x1000 $^ --oformat binary

run:
	qemu-system-x86_64 -fda $(OSOUTPUT)

clean:
	rm -f *.bin *.o $(OBJS)