makefile

一个小型的操作系统,采用gcc进行开发,几千行的代码,方便初学者学习

#####################################################################
#
# Snixos Project version 1.0, 2003.6
# (C) Copyright 2003,2004,2005 Jockeyson,KeqiangGao <[e-mail]>
# All Rights Reserved.
# Distributed under the terms of the GNU General Public License.
#
# This program is a free and open source software and you can redistribute 
# it and/or modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation. As no any liability is assumed 
# for any incidental or consequential damages in connection with the 
# information or program fragments contained herein,so any exception arised
# is at your own risk. It is ABSOLUTELY WITHOUT ANY WARRANTY.
# Bug report please send to [e-mail] .
#
#####################################################################

#
# Makefile for snixos project
#               [e-mail]
#               [e-mail]   ,2003.05
#
# prerequisite for the development : 
#		NASM version 0.98
# 		gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)
#               Linux 2.4.7-10 
#

# 0. to make snixos running in graphics mode: 
#	make clean; make all; make diskimg
# 1. to make snixos running in text mode: 
#	make clean; make all VIDEO=TEXT; make diskimg
# 
# when either of the above ones have beed done , you'll get floppy 
# disk image file named floppy.img, write it to a 1.44M floppy with 'dd'
# in UNIX/Linux or 'rawrite' in Dos/Windows , then bootup with this 
# floppy to see what will happen. Also you can invoke 'make floppy'
# in Linux to do this:
#	make floppy 
#

CC	= gcc
LD      = ld
AS      = nasm
INCLUDE = ./include 
LDFLAGS = -melf_i386 -Ttext 0x80000 -e kernelEntrance
CCFLG   = -O2 -c -nostdinc -fno-builtin -I$(INCLUDE) -I. 
ASMOBJS = int.o shreg.o timer.o io.o speaker.o 
ASMFILES= $(ASMOBJS:%.o=%.asm) 
COBJS   = kernel.o vgatext.o ctype.o string.o mem.o fatfs.o \
	  keyboard.o vgagraph.o myvm.o cmostime.o 
CFILES := $(COBJS:%.o=%.c)
OBJS    = $(COBJS) $(ASMOBJS)  
export VIDEO=GRAPH

all: snixos.img

snixos.img: boot.bin kernel.bin
	@echo Create system image...
	@cat ./boot/boot.bin kernel.bin >snixos.img
	@echo System image created OK, try '"make floppy"' to make a Snixos boot disk.

boot.bin: ./boot/boot.asm
	@echo Making bootloader...
	@$(MAKE) -C ./boot

kernel.o: kernel.c 
	@echo Making $<
ifeq ($(VIDEO),GRAPH)
	@$(CC) $(CCFLG) -DVIDEO_GRAPH_640X480  $< -o $@
else
	@$(CC) $(CCFLG) -DVIDEO_TEXT_80X25 $< -o $@
endif

kernel.bin: $(OBJS)
	@echo Linking...
	@$(LD) $(OBJS) $(LDFLAGS) -o $@.pre
	@echo Dumping binnary ...
	@objdump -sD $@.pre >$@.objdmp
	@echo Making binnary executable ...
	@objcopy -O binary -R .note -R .comment -S $@.pre $@

%.o : %.c #vgatext.c ctype.c string.c fatfs.c clock.c keyboard.c vgagraph.c  myvm.c
	@echo Making $<
	@$(CC) $(CCFLG) $< -o $@

mem.o: mem.c
	@echo Making $<
	@$(CC) $(CCFLG) -D_IN_SNIXOS  $< -o$@

%.o : %.asm #int.asm shreg.asm timer.asm speaker.asm
	@echo Making $<
	@$(AS) -f elf $< -o $@

# make a raw bootable floppy for the snixos
floppy: diskimg
ifeq ($(VIDEO),GRAPH)
	dd if=./snixosCN.img of=/dev/fd0 bs=512 count=2880
else
	dd if=./snixosEN.img of=/dev/fd0 bs=512 count=2880
endif
	@echo "bootup with the floppy to see what will happen"

diskimg: snixos.img
	. ./mkflpimg.sh 
ifeq ($(VIDEO),GRAPH)
	cp -f floppy.img snixosCN.img
else
	cp -f floppy.img snixosEN.img
endif
	@echo Floppy disk image  snixosCN.img/snixosEN.img created OK. 

vmimg2:	diskimg
ifeq ($(VIDEO),GRAPH)
	cp -f snixosCN.img /root/vmware/dos/Image
else
	cp -f snixosEN.img /root/vmware/dos/Image
endif
	@echo "bootup in vmware to see what will happen"

clean:
	rm -f *.bin *.img *.o kernel.bin* *~ bochsout.txt \
		kernel.bin.asm kernel.bin.map kernel.bin.objdmp kernel.bin.pre
	$(MAKE) -C ./boot clean 
	(cd include;rm -f *~;cd ..)

# make a tarball named snixos_1.0_YYYYMMDD_HHMMSS.tgz
tarball: clean
	(cd ..; tar czvf snixos_1.0_`date +%Y%m%d_%H%M%S`.tgz ./snixos; cd -)
	@echo tarball snixos`date +%Y%m%d_%H%M%S`.tar.gz created OK!