makefile

用于汇编领域的,运用于OS的MAIN函数.基于硬件基础的源代码

CC = gcc
AS = as
LD = ld
OBJCOPY_FLAGS = -R .dynamic -R .note -R .comment

all: boot setup io.o printk.o kernel.img

boot: boot.o
	$(LD) -Ttext 0x0 -s --oformat binary -o boot boot.o

boot.o: boot.s
	$(AS) -o boot.o boot.s

setup: setup.o
	$(LD) -Ttext 0x0 -s --oformat binary -o setup setup.o

setup.o: setup.s
	$(AS) -o setup.o setup.s

io.o: io.c
	$(CC) -c io.c

printk.o: printk.c
	$(CC) -c printk.c

kernel.img: hos4
	objcopy $(OBJCOPY_FLAGS) -S -O binary hos4 kernel.img

hos4: main.o
	$(LD) -o hos4 -s -Ttext 0x00010000 -e startup main.o printk.o io.o

main.o: main.c
	$(CC) -c main.c

clean:
	rm -f hos4 boot setup kernel.img *.o