uboot之makefile源码

来源：互联网发布：斗鱼皇帝知乎编辑：程序博客网时间：2024/04/28 15:09

被export声明的变量有：HOSTARCH HOSTOS TOPDIR SRCTREE OBJTREE REMOTE_BUILD obj src CROSS_COMPILE。

总结：花了一个多的星期，整篇makefile应该算看懂了。也学到了很多，比如一些基本的shell脚本命令。当然还有make的用法啦。

另外源码目录下的mkconfig与config.mk也应该要了解。这三个文件都是互相联系的。接下来的任务就是将这两个脚本再了解一下，理清思路。最后的任务就是大致了解uboot源码的启动流程了。从网上得知，貌似是start.s与 arm_boot.c一同完成bootloader启动的两个阶段任务。加油吧。

# Wolfgang Denk, DENX Software Engineering, wd@denx.de.

# See file CREDITS for list of people who contributed to this

# project.

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License as

# published by the Free Software Foundatio; either version 2 of

# the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston,

# MA 02111-1307 USA

VERSION = 1

PATCHLEVEL = 1

SUBLEVEL = 6

EXTRAVERSION =

U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)

VERSION_FILE = $(obj)include/version_autogenerated.h //此时的$(obj)在后面才定义，VERSION-FILE在后面会被引用到~~

HOSTARCH := $(shell uname -m | \ //比如说，你的host可能是i486--debian系统，i586gentoo系统， i686-ubuntu系统。sed命令是用来做一些替换的

sed -e s/i.86/i386/ \

-e s/sun4u/sparc64/ \

-e s/arm.*/arm/ \

-e s/sa110/arm/ \

-e s/powerpc/ppc/ \

-e s/macppc/ppc/) //执行shell脚本命令，HOSTARCH与HOSTOS作用？？

HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \

sed -e 's/$cygwin$.*/cygwin/')

export HOSTARCH HOSTOS //然后再引入这两个变量，靠顶层Makefile传递下去

# Deal with colliding definitions from tcsh etc.

VENDOR=

#########################################################################

# U-boot build supports producing a object files to the separate external

# directory. Two use cases are supported:

#Uboot支持将目标文件生成在外部的文件夹中，有两种命令可以实现。其实我们可以假设没有重新定义输出目录，这样理解起来会更加容易一些。

# 1) Add O= to the make command line

# 'make O=/tmp/build all'

# 2) Set environement variable BUILD_DIR to point to the desired location

# 'export BUILD_DIR=/tmp/build'

# 'make'

#引入环境变量BUILD_DIR

# The second approach can also be used with a MAKEALL script

# 'export BUILD_DIR=/tmp/build'

# './MAKEALL'

# Command line 'O=' setting overrides BUILD_DIR environent variable.

# When none of the above methods is used the local build is performed and

# the object files are placed in the source directory. //如果没有重新定义目标文件输出目录，那么它将会被存放在源码目录下~

// 'make O=/tmp/build all' 即这个命令，O代表目录吧~如果O不为0，并判断ifeq是否成立

ifdef O

ifeq ("$(origin O)", "command line") //origin函数不像其它的函数，他并不操作变量的值，他只是告诉你你的这个变量是哪里来的？其语法是：

$(origin <variable>) 注意，<variable>是变量的名字，不应该是引用。所以你最好不要在<variable>中使用“$”字符。Origin函数会以其返回值来告诉你这个变量的“出生情况”，下面，是origin函数的返回值: “undefined”如果<variable>从来没有定义过，origin函数返回这个值“undefined”

endif

//再判断BUILD_DIR是否为0，若不为0，ifneq为真，则save-output即保存输出目录

ifneq ($(BUILD_DIR),)

saved-output := $(BUILD_DIR)

# Attempt to create a output directory.

$(shell [ -d ${BUILD_DIR} ] || mkdir -p ${BUILD_DIR}) // [ -d ${BUILD_DIR}]表示这个build_dir是不是一个目录，如果没有就创建， [ ] 就是个条件判断语句了

# Verify if it was successful.确定是否成功

BUILD_DIR := $(shell cd $(BUILD_DIR) && /bin/pwd)

//shell中命令的意思是先打开这个目录，再调用Pwd显示当前路径，在将这个路径值赋给BUILD_DIR

$(if $(BUILD_DIR),,$(error output directory "$(saved-output)" does not exist)) //if条件判断语句~如果BUILD_DIR还不存在的话，则输出XXXdoes not exist

endif # ifneq ($(BUILD_DIR),)

OBJTREE := $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR))

SRCTREE := $(CURDIR)

TOPDIR := $(SRCTREE) //如果没有定义BUILD_DIR，一切是不是变的很简单^o^

LNDIR := $(OBJTREE)

export TOPDIR SRCTREE OBJTREE

MKCONFIG := $(SRCTREE)/mkconfig //定义变量MKCONFIG,这个变量值为源码目录下的mkconfig脚本。

export MKCONFIG //然后再声明

ifneq ($(OBJTREE),$(SRCTREE))

REMOTE_BUILD := 1 //如果输出目录与源码目录不等，则标志REMOTE_BUILD项

export REMOTE_BUILD

endif

# $(obj) and (src) are defined in config.mk but here in main Makefile

# we also need them before config.mk is included which is the case for

# some targets like unconfig, clean, clobber, distclean, etc.

// 如果OBJTREE即输出目录，与SRCTREE即当前的Uboot目录不等的话，ifneq成立，在对obj,src进行赋值~~~，如果相等，则obj,src为空。

ifneq ($(OBJTREE),$(SRCTREE)) //ifneq 是两者不相等的时候为真

obj := $(OBJTREE)/

src := $(SRCTREE)/

else

obj :=

src :=

endif

export obj src

#########################################################################

ifeq ($(OBJTREE)/include/config.mk,$(wildcard $(OBJTREE)/include/config.mk))

//wildcard的意思是要宏变量展开，不太懂这句有什么意义~

# load ARCH, BOARD, and CPU configuration

include $(OBJTREE)/include/config.mk //这个config.mk是mkconfig脚本生成的，其中只包含下面几个变量。

export ARCH CPU BOARD VENDOR SOC //即config.mk中的内容，这几个参数是smdk2410_config：后面输入的

ifndef CROSS_COMPILE //ifndef，若CROSS_COMPILE为空，为真，如果CROSS_COMPILE已经被定义，则跳过这个判断~与ifdef刚好相反

ifeq ($(HOSTARCH),ppc) //判断呢~这个还是很好懂的

CROSS_COMPILE =

else

ifeq ($(ARCH),ppc)

CROSS_COMPILE = powerpc-linux-

endif

ifeq ($(ARCH),arm) //如果ARCH返回值等于arm，则交叉编译器为arm-linux-

CROSS_COMPILE = arm-linux-

endif

ifeq ($(ARCH),i386)

ifeq ($(HOSTARCH),i386)

CROSS_COMPILE =

else

CROSS_COMPILE = i386-linux-

endif

ifeq ($(ARCH),mips)

CROSS_COMPILE = mips_4KC-

endif

ifeq ($(ARCH),nios)

CROSS_COMPILE = nios-elf-

endif

ifeq ($(ARCH),nios2)

CROSS_COMPILE = nios2-elf-

endif

ifeq ($(ARCH),m68k)

CROSS_COMPILE = m68k-elf-

endif

ifeq ($(ARCH),microblaze)

CROSS_COMPILE = mb-

endif

ifeq ($(ARCH),blackfin)

CROSS_COMPILE = bfin-elf-

endif

ifeq ($(ARCH),avr32)

CROSS_COMPILE = avr32-

endif

endif //最后这个endif 与infdef配对

export CROSS_COMPILE //声明交叉编译器的类型

# load other configuration

include $(TOPDIR)/config.mk //TOPDIR就是Uboot的主目录,引入顶层config.mk文件，这个文件主要是完成一些配置。

#########################################################################

# U-Boot objects....order is important (i.e. start must be first)

目标对象，顺序很重要，比如start必须是第一个~start.o启动文件

OBJS = cpu/$(CPU)/start.o //定义变量OBJS

ifeq ($(CPU),i386)

OBJS += cpu/$(CPU)/start16.o //如果是i386类型的，则向OBJS追加一个start16.o文件，即再cpu/$(CPU)/目录添加start16.o文件~下面意思都差不多呢，有点奇怪，在下面例如ifeq ($(CPU),i386)这种类型的判断，怎么没有ifeq ($(CPU),arm)？？对了，$CPU是参数,这几个参数是自己定义的吗？？后来我才明白过来，从smdk2410_config 后面输入的参数可以看出，$(CPU)等等，就是相当于默认就是arm了。多看几遍才行

OBJS += cpu/$(CPU)/reset.o

endif

OBJS += cpu/$(CPU)/resetvec.o

endif

ifeq ($(CPU),mpc83xx)

OBJS += cpu/$(CPU)/resetvec.o

endif

ifeq ($(CPU),mpc85xx)

OBJS += cpu/$(CPU)/resetvec.o

endif

ifeq ($(CPU),mpc86xx)

OBJS += cpu/$(CPU)/resetvec.o

endif

ifeq ($(CPU),bf533)

OBJS += cpu/$(CPU)/start1.o cpu/$(CPU)/interrupt.o cpu/$(CPU)/cache.o

OBJS += cpu/$(CPU)/cplbhdlr.o cpu/$(CPU)/cplbmgr.o cpu/$(CPU)/flush.o

endif

OBJS := $(addprefix $(obj),$(OBJS)) //addprefix是增加前缀的函数，将$(obj)加到$(OBJS)前，最后返回带前缀的$(OBJS)。

LIBS = lib_generic/libgeneric.a 库函数

LIBS += board/$(BOARDDIR)/lib$(BOARD).a //增加LIBS需要的库文件，这个库文件在哪里生成的呢~这几个库文件是由board/$(BOARDDIR)/目录下的Makefile生成的~

LIBS += cpu/$(CPU)/lib$(CPU).a //同样的道理

ifdef SOC //SOC是mkconfig返回的s3c24x0，这句话判断SOC是否为0

LIBS += cpu/$(CPU)/$(SOC)/lib$(SOC).a

endif

LIBS += lib_$(ARCH)/lib$(ARCH).a

LIBS += fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a \

fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a

LIBS += net/libnet.a

LIBS += disk/libdisk.a

LIBS += rtc/librtc.a

LIBS += dtt/libdtt.a

LIBS += drivers/libdrivers.a

LIBS += drivers/nand/libnand.a

LIBS += drivers/nand_legacy/libnand_legacy.a //添加通用的库文件，本来已经存在了~

LIBS += drivers/sk98lin/libsk98lin.a

LIBS += post/libpost.a post/cpu/libcpu.a

LIBS += common/libcommon.a

LIBS += $(BOARDLIBS) //BOARDLIBS在哪里定义了

LIBS := $(addprefix $(obj),$(LIBS)) //在这些文件前面添加空格？

.PHONY : $(LIBS)

# Add GCC lib //添加GCC的库文件

PLATFORM_LIBS += -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc

# The "tools" are needed early,so put this first

# Don't include stuff already done in $(LIBS)

SUBDIRS = tools \

examples \

post \

post/cpu

.PHONY : $(SUBDIRS) //在后面也会被引用到

ifeq ($(CONFIG_NAND_U_BOOT),y)

NAND_SPL = nand_spl

U_BOOT_NAND = $(obj)u-boot-nand.bin

endif

__OBJS := $(subst $(obj),,$(OBJS)) //subst字符串替换函数，把$(OBJS)中的$(obj)字符替换成空格。。但是OBJS中的obj已经是空格了。

__LIBS := $(subst $(obj),,$(LIBS)) /这个也是，libs中的obj已经是空格了

#########################################################################

ALL = $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map $(U_BOOT_NAND)

//U_BOOT_NAND在前面定义了，为u-boot-nand.bin

all: $(ALL) //all依赖于$(ALL) 最终生成镜像文件！！

$(obj)u-boot.hex: $(obj)u-boot

$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@

$(obj)u-boot.srec: $(obj)u-boot

$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@

$(obj)u-boot.bin: $(obj)u-boot

$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@

$(obj)u-boot.img: $(obj)u-boot.bin

./tools/mkimage -A $(ARCH) -T firmware -C none \

-a $(TEXT_BASE) -e 0 \

-n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' $(VERSION_FILE) | \

sed -e 's/"[ ]*$$/ for $(BOARD) board"/') \

-d $< $@

$(obj)u-boot.dis: $(obj)u-boot

$(OBJDUMP) -d $< > $@

//这里是uboot的镜像生成。

$(obj)u-boot:: depend version $(SUBDIRS) $(OBJS) $(LIBS) $(LDSCRIPT)

UNDEF_SYM=`$(OBJDUMP) -x $(LIBS) |sed -n -e 's/.*$__u_boot_cmd_.*$/-u\1/p'|sort|uniq`;\

cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \

--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \

-Map u-boot.map -o u-boot //回到源码目录，用ld链接start.o，同时与LIBS与PLATFORM_LIBS中定义的库文件，以及Uboot.map共同生成u-boot。这样理解应该是对的

$(OBJS): // 即cpu/arm920t/start.o ，执行/cpu/arm920t目录下的makefile

$(MAKE) -C cpu/$(CPU) $(if $(REMOTE_BUILD),$@,$(notdir $@)) //执行非目录部分，而可被make执行的只有makefile，我是这么理解的

$(LIBS):

$(MAKE) -C $(dir $(subst $(obj),,$@)) //dir 表示去目录部分，打开所有的目录

$(SUBDIRS):

$(MAKE) -C $@ all //执行subdir变量所有的makefile

$(NAND_SPL): version

$(MAKE) -C nand_spl/board/$(BOARDDIR) all //NAND_SPL依赖于version

$(U_BOOT_NAND): $(NAND_SPL) $(obj)u-boot.bin

cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin

version: //$(VERSION-FILE)又在哪定义了

@echo -n "#define U_BOOT_VERSION \"U-Boot " > $(VERSION_FILE); \

echo -n "$(U_BOOT_VERSION)" >> $(VERSION_FILE); \

echo -n $(shell $(CONFIG_SHELL) $(TOPDIR)/tools/setlocalversion \

$(TOPDIR)) >> $(VERSION_FILE); \

echo "\"" >> $(VERSION_FILE)

gdbtools:

$(MAKE) -C tools/gdb all || exit 1

updater:

$(MAKE) -C tools/updater all || exit 1

env:

$(MAKE) -C tools/env all || exit 1

depend dep:

for dir in $(SUBDIRS) ; do $(MAKE) -C $$dir _depend ; done

tags ctags:

ctags -w -o $(OBJTREE)/ctags `find $(SUBDIRS) include \

lib_generic board/$(BOARDDIR) cpu/$(CPU) lib_$(ARCH) \

fs/cramfs fs/fat fs/fdos fs/jffs2 \

net disk rtc dtt drivers drivers/sk98lin common \

$ -name CVS -prune $ -o $ -name '*.[ch]' -print $`

etags:

etags -a -o $(OBJTREE)/etags `find $(SUBDIRS) include \

lib_generic board/$(BOARDDIR) cpu/$(CPU) lib_$(ARCH) \

fs/cramfs fs/fat fs/fdos fs/jffs2 \

net disk rtc dtt drivers drivers/sk98lin common \

$ -name CVS -prune $ -o $ -name '*.[ch]' -print $`

$(obj)System.map: $(obj)u-boot

@$(NM) $< | \

grep -v '$compiled$\|$\.o$$$\|$ [aUw] $\|$\.\.ng$$$\|$LASH[RL]DI$' | \

sort > $(obj)System.map

#########################################################################

else

all $(obj)u-boot.hex $(obj)u-boot.srec $(obj)u-boot.bin \

$(obj)u-boot.img $(obj)u-boot.dis $(obj)u-boot \

$(SUBDIRS) version gdbtools updater env depend \

dep tags ctags etags $(obj)System.map:

@echo "System not configured - see README" >&2

@ exit 1

endif

.PHONY : CHANGELOG

CHANGELOG:

git log --no-merges U-Boot-1_1_5.. | \

unexpand -a | sed -e 's/\s\s*$$//' > $@

#########################################################################

unconfig:

@rm -f $(obj)include/config.h $(obj)include/config.mk \

$(obj)board/*/config.tmp $(obj)board/*/*/config.tmp

#========================================================================

# PowerPC

#========================================================================

#########################################################################

## MPC5xx Systems

#########################################################################

canmb_config: unconfig

@$(MKCONFIG) -a canmb ppc mpc5xxx canmb

cmi_mpc5xx_config: unconfig

@$(MKCONFIG) $(@:_config=) ppc mpc5xx cmi

PATI_config: unconfig

@$(MKCONFIG) $(@:_config=) ppc mpc5xx pati mpl

#########################################################################

## MPC5xxx Systems

#########################################################################

aev_config: unconfig

@$(MKCONFIG) -a aev ppc mpc5xxx tqm5200

BC3450_config: unconfig

@$(MKCONFIG) -a BC3450 ppc mpc5xxx bc3450

cpci5200_config: unconfig

@$(MKCONFIG) -a cpci5200 ppc mpc5xxx cpci5200 esd

hmi1001_config: unconfig

@$(MKCONFIG) hmi1001 ppc mpc5xxx hmi1001

Lite5200_config \

Lite5200_LOWBOOT_config \

Lite5200_LOWBOOT08_config \

icecube_5200_config \

icecube_5200_LOWBOOT_config \

icecube_5200_LOWBOOT08_config \

icecube_5200_DDR_config \

icecube_5200_DDR_LOWBOOT_config \

icecube_5200_DDR_LOWBOOT08_config \

icecube_5100_config: unconfig //表示Lite5200**和ice***都依赖于unconfig

@mkdir -p $(obj)include

@mkdir -p $(obj)board/icecube

@ >$(obj)include/config.h //>表示创建这个文件，两个>>表示追加

@[ -z "$(findstring LOWBOOT_,$@)" ] || \

{ if [ "$(findstring DDR,$@)" ] ; \

then echo "TEXT_BASE = 0xFF800000" >$(obj)board/icecube/config.tmp ; \

else echo "TEXT_BASE = 0xFF000000" >$(obj)board/icecube/config.tmp ; \

fi ; \

echo "... with LOWBOOT configuration" ; \

}

@[ -z "$(findstring LOWBOOT08,$@)" ] || \

{ echo "TEXT_BASE = 0xFF800000" >$(obj)board/icecube/config.tmp ; \

echo "... with 8 MB flash only" ; \

echo "... with LOWBOOT configuration" ; \

}

@[ -z "$(findstring DDR,$@)" ] || \

{ echo "#define CONFIG_MPC5200_DDR" >>$(obj)include/config.h ; \

echo "... DDR memory revision" ; \

}

@[ -z "$(findstring 5200,$@)" ] || \

{ echo "#define CONFIG_MPC5200" >>$(obj)include/config.h ; \

echo "... with MPC5200 processor" ; \

}

@[ -z "$(findstring 5100,$@)" ] || \

{ echo "#define CONFIG_MGT5100" >>$(obj)include/config.h ; \

echo "... with MGT5100 processor" ; \

}

@$(MKCONFIG) -a IceCube ppc mpc5xxx icecube //上面这部分与arm无关，也懒的看了。道理都是一样的

v38b_config: unconfig

@./mkconfig -a V38B ppc mpc5xxx v38b

inka4x0_config: unconfig

@$(MKCONFIG) inka4x0 ppc mpc5xxx inka4x0

sbc2410x_config: unconfig

@$(MKCONFIG) $(@:_config=) arm arm920t sbc2410x NULL s3c24x0

scb9328_config : unconfig

@$(MKCONFIG) $(@:_config=) arm arm920t scb9328 NULL imx

smdk2400_config : unconfig

@$(MKCONFIG) $(@:_config=) arm arm920t smdk2400 NULL s3c24x0

smdk2410_config : unconfig //翻了几十页，总算翻到这里了！！！原来uboot的makefile并不难，之所以源码文件这么大，是因为它所支持的开发板很多很多，从上面翻到这里，足足有一百多种了吧，而且后面还有那么多~囧！！这个smdk2410_config 才是我们真是有用的。将makefile翻一遍，才真正体验到了uboot的强大！！！- -#！

@$(MKCONFIG) $(@:_config=) arm arm920t smdk2410 NULL s3c24x0

SX1_config : unconfig

@$(MKCONFIG) $(@:_config=) arm arm925t sx1

#########################################################################

clean: //什么config终于完了，Makefile也结束了~~~最后剩下这几个老弱残兵，只是一些命令罢了

find $(OBJTREE) -type f \

\( -name 'core' -o -name '*.bak' -o -name '*~' \

-o -name '*.o' -o -name '*.a' \) -print \

| xargs rm -f

rm -f $(obj)examples/hello_world $(obj)examples/timer \

$(obj)examples/eepro100_eeprom $(obj)examples/sched \

$(obj)examples/mem_to_mem_idma2intr $(obj)examples/82559_eeprom \

$(obj)examples/smc91111_eeprom $(obj)examples/interrupt \

$(obj)examples/test_burst

rm -f $(obj)tools/img2srec $(obj)tools/mkimage $(obj)tools/envcrc \

$(obj)tools/gen_eth_addr

rm -f $(obj)tools/mpc86x_clk $(obj)tools/ncb

rm -f $(obj)tools/easylogo/easylogo $(obj)tools/bmp_logo

rm -f $(obj)tools/gdb/astest $(obj)tools/gdb/gdbcont $(obj)tools/gdb/gdbsend

rm -f $(obj)tools/env/fw_printenv $(obj)tools/env/fw_setenv

rm -f $(obj)board/cray/L1/bootscript.c $(obj)board/cray/L1/bootscript.image

rm -f $(obj)board/netstar/eeprom $(obj)board/netstar/crcek $(obj)board/netstar/crcit

rm -f $(obj)board/netstar/*.srec $(obj)board/netstar/*.bin

rm -f $(obj)board/trab/trab_fkt $(obj)board/voiceblue/eeprom

rm -f $(obj)board/integratorap/u-boot.lds $(obj)board/integratorcp/u-boot.lds

rm -f $(obj)include/bmp_logo.h

rm -f $(obj)nand_spl/u-boot-spl $(obj)nand_spl/u-boot-spl.map

clobber: clean

find $(OBJTREE) -type f \( -name .depend \

-o -name '*.srec' -o -name '*.bin' -o -name u-boot.img \) \

-print0 \

| xargs -0 rm -f

rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS $(obj)include/version_autogenerated.h

rm -fr $(obj)*.*~

rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL)

rm -f $(obj)tools/crc32.c $(obj)tools/environment.c $(obj)tools/env/crc32.c

rm -f $(obj)tools/inca-swap-bytes $(obj)cpu/mpc824x/bedbug_603e.c

rm -f $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm

[ ! -d $(OBJTREE)/nand_spl ] || find $(obj)nand_spl -lname "*" -print | xargs rm -f

ifeq ($(OBJTREE),$(SRCTREE))

mrproper \

distclean: clobber unconfig

else

mrproper \

distclean: clobber unconfig

rm -rf $(OBJTREE)/*

endif

backup:

F=`basename $(TOPDIR)` ; cd .. ; \

gtar --force-local -zcvf `date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F

#########################################################################

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