kernel/Makefile at main · tate8/kernel · GitHub

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# $@ = target file
# $< = first dependency
# $^ = all dependencies


C_SOURCES = $(wildcard kernel/*.c drivers/*.c)
HEADERS = $(wildcard kernel/*.h drivers/*.h)
# Nice syntax for file extension replacement
OBJ = ${C_SOURCES:.c=.o}


# First rule is run by default
os-image.bin: boot/boot_sect.bin kernel.bin
	cat $^ > os-image.bin

kernel.bin: boot/kernel_entry.o ${OBJ}
	i386-elf-ld -o $@ -Ttext 0x1000 $^ --oformat binary

# Used for debugging purposes
kernel.elf: boot/kernel_entry.o ${OBJ}
	i386-elf-ld -o $@ -Ttext 0x1000 $^

run: os-image.bin
	qemu-system-i386 -fda $<


### General Rules
%.o: %.c ${HEADERS}
	i386-elf-gcc -ffreestanding -c $< -o $@

%.o: %.asm
	nasm $< -f elf -o $@

%.bin: %.asm
	nasm $< -f bin -o $@


clean:
	rm -rf *.bin *.dis *.o os-image.bin *.elf
	rm -rf kernel/*.o boot/*.bin drivers/*.o boot/*.o