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分类: LINUX

2009-06-15 21:37:03

#版本号是0.1.4
VERSION = 0
PATCHLEVEL = 1
SUBLEVEL = 4
 
#等效于定义一个变量VIVIRELEASE=0.1.4
VIVIRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)
 
# 其中的:=表示直接展开式变量定义,另外一种直接用“=”表示的是递归变量定义
#指定CPU体系结构是arm构架
ARCH := arm 
 
#-x如果文件可执行则为真
#不理理解$$BASH,为什么有两个$???????????????????????
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 else if [ -x /bin/bash ]; then echo /bin/bash; \
 else echo sh; fi ; fi)

TOPDIR := $(shell /bin/pwd)
#
# change this to point to the Linux include directory
#
LINUX_INCLUDE_DIR = /opt/host/armv4l/include/

VIVIPATH           = $(TOPDIR)/include
HOSTCC          = gcc
HOSTCFLAGS      = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
CROSS_COMPILE   = /opt/host/armv4l/bin/armv4l-unknown-linux-
#CROSS_COMPILE   = /opt/host/armv4l/bin/armv4l-redhat-linux-
#
# Include the make variables (CC, etc...)
#
AS              = $(CROSS_COMPILE)as
LD              = $(CROSS_COMPILE)ld
CC              = $(CROSS_COMPILE)gcc
CPP             = $(CC) -E
AR              = $(CROSS_COMPILE)ar
NM              = $(CROSS_COMPILE)nm
STRIP           = $(CROSS_COMPILE)strip
OBJCOPY         = $(CROSS_COMPILE)objcopy
OBJDUMP         = $(CROSS_COMPILE)objdump
MAKEFILES       = $(TOPDIR)/.config
MD5SUM  = md5sum
PERL            = perl
AWK  = awk
export  VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE \
        CONFIG_SHELL TOPDIR VIVIPATH HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE MAKEFILES MD5SUM PERL AWK
all:  do-it-all
ifeq (.config,$(wildcard .config))
include .config
else
CONFIGURATION = config
do-it-all: config
endif
do-it-all: Version vivi
#
# standard CFLAGS
#
CPPFLAGS := -I$(VIVIPATH) -I$(LINUX_INCLUDE_DIR)
#CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
#          -fomit-frame-pointer -fno-strict-aliasing -fno-common
CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -O2 -fPIC -fomit-frame-pointer
AFLAGS := -D__ASSEMBLY__ $(CPPFLAGS)
CORE_FILES = init/main.o init/version.o lib/lib.o
LIBS            := lib/priv_data/priv_data.o
SUBDIRS         = drivers lib
DRIVERS-y :=
DRIVERS-$(CONFIG_SERIAL) += drivers/serial/serial.o
DRIVERS-$(CONFIG_MTD) += drivers/mtd/mtd.o
DRIVERS := $(DRIVERS-y)
CLEAN_FILES = \
 vivi-elf \
 vivi \
 vivi.nm \
 vivi.map
#
# Location of the gcc arm libs.
#
ARM_GCC_LIBS = /opt/host/armv4l/lib/gcc-lib/armv4l-unknown-linux/2.95.2
#ARM_GCC_LIBS = /opt/host/armv4l/lib/gcc-lib/armv4l-redhat-linux/2.95.3
OBJCOPYFLAGS = -R .comment -R .stab -R .stabstr
CLIBS = -L$(ARM_GCC_LIBS) -lgcc -lc
LINKFLAGS = -Tarch/vivi.lds -Bstatic
DISTCLEAN_FILES = \
 include/autoconf.h include/version.h \
 scripts/lxdialog/*.o scripts/lxdialog/lxdialog \
 .menuconfig.log \
 .config .config.old TAGS tags
include arch/Makefile
export  CPPFLAGS CFLAGS AFLAGS
export  DRIVERS LDFLAGS
Version: dummy
 @rm -f include/compile.h
vivi: include/version.h $(CONFIGURATION) init/main.o init/version.o linuxsubdirs
 $(LD) -v $(LINKFLAGS) \
  $(HEAD) \
  $(CORE_FILES) \
  $(DRIVERS) \
  $(LIBS) \
  -o vivi-elf $(CLIBS)
 $(NM) -v -l vivi-elf > vivi.map
 $(OBJCOPY) -O binary -S vivi-elf vivi $(OBJCOPYFLAGS)
oldconfig:
 $(CONFIG_SHELL) scripts/Configure -d arch/config.in
config:
 $(CONFIG_SHELL) scripts/Configure arch/config.in
menuconfig: include/version.h
 $(MAKE) -C scripts/lxdialog all
 $(CONFIG_SHELL) scripts/Menuconfig arch/config.in
clean:
 find . \( -name '*.o' -o -name core -o -name ".*.flags" \) -type f -print \
 | grep -v lxdialog/ | xargs rm -f
 rm -f $(CLEAN_FILES)
distclean: clean
 rm -f $(DISTCLEAN_FILES)
linuxsubdirs: $(patsubst %, _dir_%, $(SUBDIRS))
$(patsubst %, _dir_%, $(SUBDIRS)) : include/version.h
 $(MAKE) CFLAGS="$(CFLAGS) $(CFLAGS_KERNEL)" -C $(patsubst _dir_%, %, $@)
$(TOPDIR)/include/version.h: include/version.h
$(TOPDIR)/include/compile.h: include/compile.h
include/compile.h: $(CONFIGURATION) include/version.h
 @echo -n \#define UTS_VERSION \"\#$(VIVIRELEASE) > .ver
 @if [ -f .name ]; then  echo -n \-`cat .name` >> .ver; fi
 @echo ' '`date`'"' >> .ver
 @echo \#define VIVI_COMPILE_TIME \"`date +%T`\" >> .ver
 @echo \#define VIVI_COMPILE_BY \"`whoami`\" >> .ver
 @echo \#define VIVI_COMPILE_HOST \"`hostname`\" >> .ver
 @if [ -x /bin/dnsdomainname ]; then \
    echo \#define VIVI_COMPILE_DOMAIN \"`dnsdomainname`\"; \
  elif [ -x /bin/domainname ]; then \
    echo \#define VIVI_COMPILE_DOMAIN \"`domainname`\"; \
  else \
    echo \#define VIVI_COMPILE_DOMAIN ; \
  fi >> .ver
 @echo \#define VIVI_COMPILER \"`$(CC) $(CFLAGS) -v 2>&1 | tail -1`\" >> .ver
 @mv -f .ver $@
include/version.h:
 @echo \#define VIVI_RELEASE \"$(VIVIRELEASE)\" > .ver
 @echo \#define VIVI_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)` >> .ver
 @echo '#define VIVI_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))' >>.ver
 @mv -f .ver $@
init/version.o: init/version.c include/compile.h
 $(CC) $(CFLAGS) -DUTS_MACHINE='"$(ARCH)"' -c -o init/version.o init/version.c
init/main.o: init/main.c
 $(CC) $(CFLAGS) $(CFLAGS_KERNEL) $(PROFILING) -c -o $*.o $<
TAGS: dummy
 etags `find include -name '*.h'`
 find $(SUBDIRS) init -name '*.[ch]' | xargs etags -a
# Exuberant ctags works better with -I
tags: dummy
 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
 ctags $$CTAGSF `find include -name '*.h'` && \
 find $(SUBDIRS) init -name '*.[ch]' | xargs ctags $$CTAGSF -a
%: ./arch/def-configs/%
 $(MAKE) distclean
 cp arch/def-configs/$* ./.config -f
 $(MAKE) oldconfig
 $(MAKE)
 
ifdef CONFIGURATION
..$(CONFIGURATION):
 @echo
 @echo "You have a bad or nonexistent" .$(CONFIGURATION) ": running 'make" $(CONFIGURATION)"'"
 @echo
 $(MAKE) $(CONFIGURATION)
 @echo
 @echo "Successful. Try re-making (ignore the error that follows)"
 @echo
 exit 1
dummy:
else
dummy:
endif
include Rules.make
 
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