os-tutorial/13-kernel-barebones/Makefile at master · codercodingthecode/os-tutorial

32 lines (23 loc) · 686 Bytes

# $@ = target file

# $< = first dependency

# $^ = all dependencies

# First rule is the one executed when no parameters are fed to the Makefile

all: run

# Notice how dependencies are built as needed

kernel.bin: kernel_entry.o kernel.o

i386-elf-ld -o $@ -Ttext 0x1000 $^ --oformat binary

kernel_entry.o: kernel_entry.asm

nasm $< -f elf -o $@

kernel.o: kernel.c

i386-elf-gcc -ffreestanding -c $< -o $@

# Rule to disassemble the kernel - may be useful to debug

kernel.dis: kernel.bin

ndisasm -b 32 $< > $@

bootsect.bin: bootsect.asm

nasm $< -f bin -o $@

os-image.bin: bootsect.bin kernel.bin

cat $^ > $@

run: os-image.bin

qemu-system-i386 -fda $<

clean:

rm *.bin *.o *.dis

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