Makefile

   1 #
   2 # (C) Copyright 2000-2011
   3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 #
   5 # See file CREDITS for list of people who contributed to this
   6 # project.
   7 #
   8 # This program is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU General Public License as
  10 # published by the Free Software Foundatio; either version 2 of
  11 # the License, or (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 # MA 02111-1307 USA
  22 #
  23
  24 VERSION = 2011
  25 PATCHLEVEL = 09
  26 SUBLEVEL =
  27 EXTRAVERSION =
  28 ifneq "$(SUBLEVEL)" ""
  29 U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
  30 else
  31 U_BOOT_VERSION = $(VERSION).$(PATCHLEVEL)$(EXTRAVERSION)
  32 endif
  33 TIMESTAMP_FILE = $(obj)include/generated/timestamp_autogenerated.h
  34 VERSION_FILE = $(obj)include/generated/version_autogenerated.h
  35
  36 HOSTARCH := $(shell uname -m | \
  37         sed -e s/i.86/x86/ \
  38             -e s/sun4u/sparc64/ \
  39             -e s/arm.*/arm/ \
  40             -e s/sa110/arm/ \
  41             -e s/ppc64/powerpc/ \
  42             -e s/ppc/powerpc/ \
  43             -e s/macppc/powerpc/\
  44             -e s/sh.*/sh/)
  45
  46 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
  47             sed -e 's/\(cygwin\).*/cygwin/')
  48
  49 # Set shell to bash if possible, otherwise fall back to sh
  50 SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  51         else if [ -x /bin/bash ]; then echo /bin/bash; \
  52         else echo sh; fi; fi)
  53
  54 export  HOSTARCH HOSTOS SHELL
  55
  56 # Deal with colliding definitions from tcsh etc.
  57 VENDOR=
  58
  59 #########################################################################
  60 # Allow for silent builds
  61 ifeq (,$(findstring s,$(MAKEFLAGS)))
  62 XECHO = echo
  63 else
  64 XECHO = :
  65 endif
  66
  67 #########################################################################
  68 #
  69 # U-boot build supports producing a object files to the separate external
  70 # directory. Two use cases are supported:
  71 #
  72 # 1) Add O= to the make command line
  73 # 'make O=/tmp/build all'
  74 #
  75 # 2) Set environement variable BUILD_DIR to point to the desired location
  76 # 'export BUILD_DIR=/tmp/build'
  77 # 'make'
  78 #
  79 # The second approach can also be used with a MAKEALL script
  80 # 'export BUILD_DIR=/tmp/build'
  81 # './MAKEALL'
  82 #
  83 # Command line 'O=' setting overrides BUILD_DIR environent variable.
  84 #
  85 # When none of the above methods is used the local build is performed and
  86 # the object files are placed in the source directory.
  87 #
  88
  89 ifdef O
  90 ifeq ("$(origin O)", "command line")
  91 BUILD_DIR := $(O)
  92 endif
  93 endif
  94
  95 ifneq ($(BUILD_DIR),)
  96 saved-output := $(BUILD_DIR)
  97
  98 # Attempt to create a output directory.
  99 $(shell [ -d ${BUILD_DIR} ] || mkdir -p ${BUILD_DIR})
 100
 101 # Verify if it was successful.
 102 BUILD_DIR := $(shell cd $(BUILD_DIR) && /bin/pwd)
 103 $(if $(BUILD_DIR),,$(error output directory "$(saved-output)" does not exist))
 104 endif # ifneq ($(BUILD_DIR),)
 105
 106 OBJTREE         := $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR))
 107 SPLTREE         := $(OBJTREE)/spl
 108 SRCTREE         := $(CURDIR)
 109 TOPDIR          := $(SRCTREE)
 110 LNDIR           := $(OBJTREE)
 111 export  TOPDIR SRCTREE OBJTREE SPLTREE
 112
 113 MKCONFIG        := $(SRCTREE)/mkconfig
 114 export MKCONFIG
 115
 116 ifneq ($(OBJTREE),$(SRCTREE))
 117 REMOTE_BUILD    := 1
 118 export REMOTE_BUILD
 119 endif
 120
 121 # $(obj) and (src) are defined in config.mk but here in main Makefile
 122 # we also need them before config.mk is included which is the case for
 123 # some targets like unconfig, clean, clobber, distclean, etc.
 124 ifneq ($(OBJTREE),$(SRCTREE))
 125 obj := $(OBJTREE)/
 126 src := $(SRCTREE)/
 127 else
 128 obj :=
 129 src :=
 130 endif
 131 export obj src
 132
 133 # Make sure CDPATH settings don't interfere
 134 unexport CDPATH
 135
 136 #########################################################################
 137
 138 # The "tools" are needed early, so put this first
 139 # Don't include stuff already done in $(LIBS)
 140 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
 141 # is "yes"), so compile examples after U-Boot is compiled.
 142 SUBDIR_TOOLS = tools
 143 SUBDIR_EXAMPLES = examples/standalone examples/api
 144 SUBDIRS = $(SUBDIR_TOOLS)
 145 ifndef CONFIG_SANDBOX
 146 SUBDIRS += $(SUBDIR_EXAMPLES)
 147 endif
 148
 149 .PHONY : $(SUBDIRS) $(VERSION_FILE) $(TIMESTAMP_FILE)
 150
 151 ifeq ($(obj)include/config.mk,$(wildcard $(obj)include/config.mk))
 152
 153 # Include autoconf.mk before config.mk so that the config options are available
 154 # to all top level build files.  We need the dummy all: target to prevent the
 155 # dependency target in autoconf.mk.dep from being the default.
 156 all:
 157 sinclude $(obj)include/autoconf.mk.dep
 158 sinclude $(obj)include/autoconf.mk
 159
 160 # load ARCH, BOARD, and CPU configuration
 161 include $(obj)include/config.mk
 162 export  ARCH CPU BOARD VENDOR SOC
 163
 164 # set default to nothing for native builds
 165 ifeq ($(HOSTARCH),$(ARCH))
 166 CROSS_COMPILE ?=
 167 endif
 168
 169 # load other configuration
 170 include $(TOPDIR)/config.mk
 171
 172 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 173 # that (or fail if absent).  Otherwise, search for a linker script in a
 174 # standard location.
 175
 176 ifndef LDSCRIPT
 177         #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
 178         ifdef CONFIG_SYS_LDSCRIPT
 179                 # need to strip off double quotes
 180                 LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT))
 181         endif
 182 endif
 183
 184 ifndef LDSCRIPT
 185         ifeq ($(CONFIG_NAND_U_BOOT),y)
 186                 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
 187                 ifeq ($(wildcard $(LDSCRIPT)),)
 188                         LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds
 189                 endif
 190         endif
 191         ifeq ($(wildcard $(LDSCRIPT)),)
 192                 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
 193         endif
 194         ifeq ($(wildcard $(LDSCRIPT)),)
 195                 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds
 196         endif
 197         ifeq ($(wildcard $(LDSCRIPT)),)
 198 $(error could not find linker script)
 199         endif
 200 endif
 201
 202 #########################################################################
 203 # U-Boot objects....order is important (i.e. start must be first)
 204
 205 OBJS  = $(CPUDIR)/start.o
 206 ifeq ($(CPU),x86)
 207 OBJS += $(CPUDIR)/start16.o
 208 OBJS += $(CPUDIR)/resetvec.o
 209 endif
 210 ifeq ($(CPU),ppc4xx)
 211 OBJS += $(CPUDIR)/resetvec.o
 212 endif
 213 ifeq ($(CPU),mpc85xx)
 214 OBJS += $(CPUDIR)/resetvec.o
 215 endif
 216
 217 OBJS := $(addprefix $(obj),$(OBJS))
 218
 219 LIBS  = lib/libgeneric.o
 220 LIBS += lib/lzma/liblzma.o
 221 LIBS += lib/lzo/liblzo.o
 222 LIBS += lib/zlib/libz.o
 223 LIBS += $(shell if [ -f board/$(VENDOR)/common/Makefile ]; then echo \
 224         "board/$(VENDOR)/common/lib$(VENDOR).o"; fi)
 225 LIBS += $(CPUDIR)/lib$(CPU).o
 226 ifdef SOC
 227 LIBS += $(CPUDIR)/$(SOC)/lib$(SOC).o
 228 endif
 229 ifeq ($(CPU),ixp)
 230 LIBS += arch/arm/cpu/ixp/npe/libnpe.o
 231 endif
 232 ifeq ($(CONFIG_OF_EMBED),y)
 233 LIBS += dts/libdts.o
 234 endif
 235 LIBS += arch/$(ARCH)/lib/lib$(ARCH).o
 236 LIBS += fs/cramfs/libcramfs.o fs/fat/libfat.o fs/fdos/libfdos.o fs/jffs2/libjffs2.o \
 237         fs/reiserfs/libreiserfs.o fs/ext2/libext2fs.o fs/yaffs2/libyaffs2.o \
 238         fs/ubifs/libubifs.o
 239 LIBS += net/libnet.o
 240 LIBS += disk/libdisk.o
 241 LIBS += drivers/bios_emulator/libatibiosemu.o
 242 LIBS += drivers/block/libblock.o
 243 LIBS += drivers/dma/libdma.o
 244 LIBS += drivers/fpga/libfpga.o
 245 LIBS += drivers/gpio/libgpio.o
 246 LIBS += drivers/hwmon/libhwmon.o
 247 LIBS += drivers/i2c/libi2c.o
 248 LIBS += drivers/input/libinput.o
 249 LIBS += drivers/misc/libmisc.o
 250 LIBS += drivers/mmc/libmmc.o
 251 LIBS += drivers/mtd/libmtd.o
 252 LIBS += drivers/mtd/nand/libnand.o
 253 LIBS += drivers/mtd/onenand/libonenand.o
 254 LIBS += drivers/mtd/ubi/libubi.o
 255 LIBS += drivers/mtd/spi/libspi_flash.o
 256 LIBS += drivers/net/libnet.o
 257 LIBS += drivers/net/phy/libphy.o
 258 LIBS += drivers/pci/libpci.o
 259 LIBS += drivers/pcmcia/libpcmcia.o
 260 LIBS += drivers/power/libpower.o
 261 LIBS += drivers/spi/libspi.o
 262 ifeq ($(CPU),mpc83xx)
 263 LIBS += drivers/qe/libqe.o
 264 LIBS += arch/powerpc/cpu/mpc8xxx/ddr/libddr.o
 265 LIBS += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
 266 endif
 267 ifeq ($(CPU),mpc85xx)
 268 LIBS += drivers/qe/libqe.o
 269 LIBS += drivers/net/fm/libfm.o
 270 LIBS += arch/powerpc/cpu/mpc8xxx/ddr/libddr.o
 271 LIBS += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
 272 endif
 273 ifeq ($(CPU),mpc86xx)
 274 LIBS += arch/powerpc/cpu/mpc8xxx/ddr/libddr.o
 275 LIBS += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
 276 endif
 277 LIBS += drivers/rtc/librtc.o
 278 LIBS += drivers/serial/libserial.o
 279 LIBS += drivers/twserial/libtws.o
 280 LIBS += drivers/usb/eth/libusb_eth.o
 281 LIBS += drivers/usb/gadget/libusb_gadget.o
 282 LIBS += drivers/usb/host/libusb_host.o
 283 LIBS += drivers/usb/musb/libusb_musb.o
 284 LIBS += drivers/usb/phy/libusb_phy.o
 285 LIBS += drivers/video/libvideo.o
 286 LIBS += drivers/watchdog/libwatchdog.o
 287 LIBS += common/libcommon.o
 288 LIBS += lib/libfdt/libfdt.o
 289 LIBS += api/libapi.o
 290 LIBS += post/libpost.o
 291
 292 ifeq ($(SOC),omap3)
 293 LIBS += $(CPUDIR)/omap-common/libomap-common.o
 294 endif
 295 ifeq ($(SOC),omap4)
 296 LIBS += $(CPUDIR)/omap-common/libomap-common.o
 297 endif
 298
 299 ifeq ($(SOC),s5pc1xx)
 300 LIBS += $(CPUDIR)/s5p-common/libs5p-common.o
 301 endif
 302 ifeq ($(SOC),s5pc2xx)
 303 LIBS += $(CPUDIR)/s5p-common/libs5p-common.o
 304 endif
 305
 306 LIBS := $(addprefix $(obj),$(sort $(LIBS)))
 307 .PHONY : $(LIBS)
 308
 309 LIBBOARD = board/$(BOARDDIR)/lib$(BOARD).o
 310 LIBBOARD := $(addprefix $(obj),$(LIBBOARD))
 311
 312 # Add GCC lib
 313 ifdef USE_PRIVATE_LIBGCC
 314 ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
 315 PLATFORM_LIBGCC = $(OBJTREE)/arch/$(ARCH)/lib/libgcc.o
 316 else
 317 PLATFORM_LIBGCC = -L $(USE_PRIVATE_LIBGCC) -lgcc
 318 endif
 319 else
 320 PLATFORM_LIBGCC = -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc
 321 endif
 322 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 323 export PLATFORM_LIBS
 324
 325 # Special flags for CPP when processing the linker script.
 326 # Pass the version down so we can handle backwards compatibility
 327 # on the fly.
 328 LDPPFLAGS += \
 329         -include $(TOPDIR)/include/u-boot/u-boot.lds.h \
 330         $(shell $(LD) --version | \
 331           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 332
 333 __OBJS := $(subst $(obj),,$(OBJS))
 334 __LIBS := $(subst $(obj),,$(LIBS)) $(subst $(obj),,$(LIBBOARD))
 335
 336 #########################################################################
 337 #########################################################################
 338
 339 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 340 BOARD_SIZE_CHECK = \
 341         @actual=`wc -c $@ | awk '{print $$1}'`; \
 342         limit=$(CONFIG_BOARD_SIZE_LIMIT); \
 343         if test $$actual -gt $$limit; then \
 344                 echo "$@ exceeds file size limit:"; \
 345                 echo "  limit:  $$limit bytes"; \
 346                 echo "  actual: $$actual bytes"; \
 347                 echo "  excess: $$((actual - limit)) bytes"; \
 348                 exit 1; \
 349         fi
 350 else
 351 BOARD_SIZE_CHECK =
 352 endif
 353
 354 # Always append ALL so that arch config.mk's can add custom ones
 355 ALL-y += $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map
 356
 357 ALL-$(CONFIG_NAND_U_BOOT) += $(obj)u-boot-nand.bin
 358 ALL-$(CONFIG_ONENAND_U_BOOT) += $(obj)u-boot-onenand.bin
 359 ONENAND_BIN ?= $(obj)onenand_ipl/onenand-ipl-2k.bin
 360 ALL-$(CONFIG_MMC_U_BOOT) += $(obj)mmc_spl/u-boot-mmc-spl.bin
 361 ALL-$(CONFIG_SPL) += $(obj)spl/u-boot-spl.bin
 362
 363 all:            $(ALL-y) $(SUBDIR_EXAMPLES)
 364
 365 $(obj)u-boot.hex:       $(obj)u-boot
 366                 $(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@
 367
 368 $(obj)u-boot.srec:      $(obj)u-boot
 369                 $(OBJCOPY) -O srec $< $@
 370
 371 $(obj)u-boot.bin:       $(obj)u-boot
 372                 $(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
 373                 $(BOARD_SIZE_CHECK)
 374
 375 $(obj)u-boot.ldr:       $(obj)u-boot
 376                 $(CREATE_LDR_ENV)
 377                 $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 378                 $(BOARD_SIZE_CHECK)
 379
 380 $(obj)u-boot.ldr.hex:   $(obj)u-boot.ldr
 381                 $(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@ -I binary
 382
 383 $(obj)u-boot.ldr.srec:  $(obj)u-boot.ldr
 384                 $(OBJCOPY) ${OBJCFLAGS} -O srec $< $@ -I binary
 385
 386 $(obj)u-boot.img:       $(obj)u-boot.bin
 387                 $(obj)tools/mkimage -A $(ARCH) -T firmware -C none \
 388                 -O u-boot -a $(CONFIG_SYS_TEXT_BASE) -e 0 \
 389                 -n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' $(VERSION_FILE) | \
 390                         sed -e 's/"[     ]*$$/ for $(BOARD) board"/') \
 391                 -d $< $@
 392
 393 $(obj)u-boot.imx:       $(obj)u-boot.bin
 394                 $(obj)tools/mkimage -n  $(CONFIG_IMX_CONFIG) -T imximage \
 395                 -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
 396
 397 $(obj)u-boot.kwb:       $(obj)u-boot.bin
 398                 $(obj)tools/mkimage -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
 399                 -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
 400
 401 $(obj)u-boot.sha1:      $(obj)u-boot.bin
 402                 $(obj)tools/ubsha1 $(obj)u-boot.bin
 403
 404 $(obj)u-boot.dis:       $(obj)u-boot
 405                 $(OBJDUMP) -d $< > $@
 406
 407 $(obj)u-boot.ubl:       $(obj)u-boot-nand.bin
 408                 $(obj)tools/mkimage -n $(UBL_CONFIG) -T ublimage \
 409                 -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
 410
 411 ifeq ($(CONFIG_SANDBOX),y)
 412 GEN_UBOOT = \
 413                 cd $(LNDIR) && $(CC) $(SYMS) -T $(obj)u-boot.lds \
 414                         -Wl,--start-group $(__LIBS) -Wl,--end-group \
 415                         $(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map -o u-boot
 416 else
 417 GEN_UBOOT = \
 418                 UNDEF_SYM=`$(OBJDUMP) -x $(LIBBOARD) $(LIBS) | \
 419                 sed  -n -e 's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
 420                 cd $(LNDIR) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $$UNDEF_SYM $(__OBJS) \
 421                         --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
 422                         -Map u-boot.map -o u-boot
 423 endif
 424
 425 $(obj)u-boot:   depend \
 426                 $(SUBDIR_TOOLS) $(OBJS) $(LIBBOARD) $(LIBS) $(LDSCRIPT) $(obj)u-boot.lds
 427                 $(GEN_UBOOT)
 428 ifeq ($(CONFIG_KALLSYMS),y)
 429                 smap=`$(call SYSTEM_MAP,u-boot) | \
 430                         awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
 431                 $(CC) $(CFLAGS) -DSYSTEM_MAP="\"$${smap}\"" \
 432                         -c common/system_map.c -o $(obj)common/system_map.o
 433                 $(GEN_UBOOT) $(obj)common/system_map.o
 434 endif
 435
 436 $(OBJS):        depend
 437                 $(MAKE) -C $(CPUDIR) $(if $(REMOTE_BUILD),$@,$(notdir $@))
 438
 439 $(LIBS):        depend $(SUBDIR_TOOLS)
 440                 $(MAKE) -C $(dir $(subst $(obj),,$@))
 441
 442 $(LIBBOARD):    depend $(LIBS)
 443                 $(MAKE) -C $(dir $(subst $(obj),,$@))
 444
 445 $(SUBDIRS):     depend
 446                 $(MAKE) -C $@ all
 447
 448 $(SUBDIR_EXAMPLES): $(obj)u-boot
 449
 450 $(LDSCRIPT):    depend
 451                 $(MAKE) -C $(dir $@) $(notdir $@)
 452
 453 $(obj)u-boot.lds: $(LDSCRIPT)
 454                 $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 455
 456 nand_spl:       $(TIMESTAMP_FILE) $(VERSION_FILE) depend
 457                 $(MAKE) -C nand_spl/board/$(BOARDDIR) all
 458
 459 $(obj)u-boot-nand.bin:  nand_spl $(obj)u-boot.bin
 460                 cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin
 461
 462 onenand_ipl:    $(TIMESTAMP_FILE) $(VERSION_FILE) $(obj)include/autoconf.mk
 463                 $(MAKE) -C onenand_ipl/board/$(BOARDDIR) all
 464
 465 $(obj)u-boot-onenand.bin:       onenand_ipl $(obj)u-boot.bin
 466                 cat $(ONENAND_BIN) $(obj)u-boot.bin > $(obj)u-boot-onenand.bin
 467
 468 mmc_spl:        $(TIMESTAMP_FILE) $(VERSION_FILE) depend
 469                 $(MAKE) -C mmc_spl/board/$(BOARDDIR) all
 470
 471 $(obj)mmc_spl/u-boot-mmc-spl.bin:       mmc_spl
 472
 473 $(obj)spl/u-boot-spl.bin:               depend
 474                 $(MAKE) -C spl all
 475
 476 updater:
 477                 $(MAKE) -C tools/updater all
 478
 479 # Explicitly make _depend in subdirs containing multiple targets to prevent
 480 # parallel sub-makes creating .depend files simultaneously.
 481 depend dep:     $(TIMESTAMP_FILE) $(VERSION_FILE) \
 482                 $(obj)include/autoconf.mk \
 483                 $(obj)include/generated/generic-asm-offsets.h \
 484                 $(obj)include/generated/asm-offsets.h
 485                 for dir in $(SUBDIRS) $(CPUDIR) $(dir $(LDSCRIPT)) ; do \
 486                         $(MAKE) -C $$dir _depend ; done
 487
 488 TAG_SUBDIRS = $(SUBDIRS)
 489 TAG_SUBDIRS += $(dir $(__LIBS))
 490 TAG_SUBDIRS += include
 491
 492 FIND := find
 493 FINDFLAGS := -L
 494
 495 tags ctags:
 496                 ctags -w -o $(obj)ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
 497                                                 -name '*.[chS]' -print`
 498
 499 etags:
 500                 etags -a -o $(obj)etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
 501                                                 -name '*.[chS]' -print`
 502 cscope:
 503                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
 504                                                 cscope.files
 505                 cscope -b -q -k
 506
 507 SYSTEM_MAP = \
 508                 $(NM) $1 | \
 509                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
 510                 LC_ALL=C sort
 511 $(obj)System.map:       $(obj)u-boot
 512                 @$(call SYSTEM_MAP,$<) > $(obj)System.map
 513
 514 #
 515 # Auto-generate the autoconf.mk file (which is included by all makefiles)
 516 #
 517 # This target actually generates 2 files; autoconf.mk and autoconf.mk.dep.
 518 # the dep file is only include in this top level makefile to determine when
 519 # to regenerate the autoconf.mk file.
 520 $(obj)include/autoconf.mk.dep: $(obj)include/config.h include/common.h
 521         @$(XECHO) Generating $@ ; \
 522         set -e ; \
 523         : Generate the dependancies ; \
 524         $(CC) -x c -DDO_DEPS_ONLY -M $(CFLAGS) $(CPPFLAGS) \
 525                 -MQ $(obj)include/autoconf.mk include/common.h > $@
 526
 527 $(obj)include/autoconf.mk: $(obj)include/config.h
 528         @$(XECHO) Generating $@ ; \
 529         set -e ; \
 530         : Extract the config macros ; \
 531         $(CPP) $(CFLAGS) -DDO_DEPS_ONLY -dM include/common.h | \
 532                 sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
 533         mv $@.tmp $@
 534
 535 $(obj)include/generated/generic-asm-offsets.h:  $(obj)include/autoconf.mk.dep \
 536         $(obj)lib/asm-offsets.s
 537         @$(XECHO) Generating $@
 538         tools/scripts/make-asm-offsets $(obj)lib/asm-offsets.s $@
 539
 540 $(obj)lib/asm-offsets.s:        $(obj)include/autoconf.mk.dep \
 541         $(src)lib/asm-offsets.c
 542         @mkdir -p $(obj)lib
 543         $(CC) -DDO_DEPS_ONLY \
 544                 $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
 545                 -o $@ $(src)lib/asm-offsets.c -c -S
 546
 547 $(obj)include/generated/asm-offsets.h:  $(obj)include/autoconf.mk.dep \
 548         $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s
 549         @echo Generating $@
 550         tools/scripts/make-asm-offsets $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s $@
 551
 552 $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s:   $(obj)include/autoconf.mk.dep
 553         @mkdir -p $(obj)$(CPUDIR)/$(SOC)
 554         if [ -f $(src)$(CPUDIR)/$(SOC)/asm-offsets.c ];then \
 555                 $(CC) -DDO_DEPS_ONLY \
 556                 $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
 557                         -o $@ $(src)$(CPUDIR)/$(SOC)/asm-offsets.c -c -S; \
 558         else \
 559                 touch $@; \
 560         fi
 561
 562 #########################################################################
 563 else    # !config.mk
 564 all $(obj)u-boot.hex $(obj)u-boot.srec $(obj)u-boot.bin \
 565 $(obj)u-boot.img $(obj)u-boot.dis $(obj)u-boot \
 566 $(filter-out tools,$(SUBDIRS)) \
 567 updater depend dep tags ctags etags cscope $(obj)System.map:
 568         @echo "System not configured - see README" >&2
 569         @ exit 1
 570
 571 tools: $(VERSION_FILE) $(TIMESTAMP_FILE)
 572         $(MAKE) -C $@ all
 573 endif   # config.mk
 574
 575 $(VERSION_FILE):
 576                 @mkdir -p $(dir $(VERSION_FILE))
 577                 @( localvers='$(shell $(TOPDIR)/tools/setlocalversion $(TOPDIR))' ; \
 578                    printf '#define PLAIN_VERSION "%s%s"\n' \
 579                         "$(U_BOOT_VERSION)" "$${localvers}" ; \
 580                    printf '#define U_BOOT_VERSION "U-Boot %s%s"\n' \
 581                         "$(U_BOOT_VERSION)" "$${localvers}" ; \
 582                 ) > $@.tmp
 583                 @( printf '#define CC_VERSION_STRING "%s"\n' \
 584                  '$(shell $(CC) --version | head -n 1)' )>>  $@.tmp
 585                 @( printf '#define LD_VERSION_STRING "%s"\n' \
 586                  '$(shell $(LD) -v | head -n 1)' )>>  $@.tmp
 587                 @cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
 588
 589 $(TIMESTAMP_FILE):
 590                 @mkdir -p $(dir $(TIMESTAMP_FILE))
 591                 @LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"' > $@.tmp
 592                 @LC_ALL=C date +'#define U_BOOT_TIME "%T"' >> $@.tmp
 593                 @cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@
 594
 595 easylogo env gdb:
 596         $(MAKE) -C tools/$@ all MTD_VERSION=${MTD_VERSION}
 597 gdbtools: gdb
 598
 599 tools-all: easylogo env gdb $(VERSION_FILE) $(TIMESTAMP_FILE)
 600         $(MAKE) -C tools HOST_TOOLS_ALL=y
 601
 602 .PHONY : CHANGELOG
 603 CHANGELOG:
 604         git log --no-merges U-Boot-1_1_5.. | \
 605         unexpand -a | sed -e 's/\s\s*$$//' > $@
 606
 607 include/license.h: tools/bin2header COPYING
 608         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
 609 #########################################################################
 610
 611 unconfig:
 612         @rm -f $(obj)include/config.h $(obj)include/config.mk \
 613                 $(obj)board/*/config.tmp $(obj)board/*/*/config.tmp \
 614                 $(obj)include/autoconf.mk $(obj)include/autoconf.mk.dep
 615
 616 %_config::      unconfig
 617         @$(MKCONFIG) -A $(@:_config=)
 618
 619 sinclude $(obj).boards.depend
 620 $(obj).boards.depend:   boards.cfg
 621         awk '(NF && $$1 !~ /^#/) { print $$1 ": " $$1 "_config; $$(MAKE)" }' $< > $@
 622
 623 #
 624 # Functions to generate common board directory names
 625 #
 626 lcname  = $(shell echo $(1) | sed -e 's/\(.*\)_config/\L\1/')
 627 ucname  = $(shell echo $(1) | sed -e 's/\(.*\)_config/\U\1/')
 628
 629 #########################################################################
 630 ## Coldfire
 631 #########################################################################
 632 M52277EVB_config \
 633 M52277EVB_spansion_config \
 634 M52277EVB_stmicro_config :      unconfig
 635         @mkdir -p $(obj)include
 636         @mkdir -p $(obj)board/freescale/m52277evb
 637         @case "$@" in \
 638         M52277EVB_config)               FLASH=SPANSION;; \
 639         M52277EVB_spansion_config)      FLASH=SPANSION;; \
 640         M52277EVB_stmicro_config)       FLASH=STMICRO;; \
 641         esac; \
 642         if [ "$${FLASH}" = "SPANSION" ] ; then \
 643                 echo "#define CONFIG_SYS_SPANSION_BOOT" >> $(obj)include/config.h ; \
 644                 echo "CONFIG_SYS_TEXT_BASE = 0x00000000" > $(obj)board/freescale/m52277evb/config.tmp ; \
 645         fi; \
 646         if [ "$${FLASH}" = "STMICRO" ] ; then \
 647                 echo "#define CONFIG_CF_SBF"    >> $(obj)include/config.h ; \
 648                 echo "#define CONFIG_SYS_STMICRO_BOOT"  >> $(obj)include/config.h ; \
 649                 echo "CONFIG_SYS_TEXT_BASE = 0x43E00000" > $(obj)board/freescale/m52277evb/config.tmp ; \
 650         fi
 651         @$(MKCONFIG) -n $@ -a M52277EVB m68k mcf5227x m52277evb freescale
 652
 653 M5235EVB_config \
 654 M5235EVB_Flash16_config \
 655 M5235EVB_Flash32_config:        unconfig
 656         @mkdir -p $(obj)include
 657         @mkdir -p $(obj)board/freescale/m5235evb
 658         @case "$@" in \
 659         M5235EVB_config)                FLASH=16;; \
 660         M5235EVB_Flash16_config)        FLASH=16;; \
 661         M5235EVB_Flash32_config)        FLASH=32;; \
 662         esac; \
 663         if [ "$${FLASH}" != "16" ] ; then \
 664                 echo "#define NORFLASH_PS32BIT  1" >> $(obj)include/config.h ; \
 665                 echo "CONFIG_SYS_TEXT_BASE = 0xFFC00000" > $(obj)board/freescale/m5235evb/config.tmp ; \
 666         else \
 667                 echo "CONFIG_SYS_TEXT_BASE = 0xFFE00000" > $(obj)board/freescale/m5235evb/config.tmp ; \
 668         fi
 669         @$(MKCONFIG) -n $@ -a M5235EVB m68k mcf523x m5235evb freescale
 670
 671 EB+MCF-EV123_config :           unconfig
 672         @mkdir -p $(obj)board/BuS/EB+MCF-EV123
 673         @echo "CONFIG_SYS_TEXT_BASE = 0xFFE00000"|tee $(obj)board/BuS/EB+MCF-EV123/textbase.mk
 674         @$(MKCONFIG) -n $@ EB+MCF-EV123 m68k mcf52x2 EB+MCF-EV123 BuS
 675
 676 EB+MCF-EV123_internal_config :  unconfig
 677         @mkdir -p $(obj)board/BuS/EB+MCF-EV123
 678         @echo "CONFIG_SYS_TEXT_BASE = 0xF0000000"|tee $(obj)board/BuS/EB+MCF-EV123/textbase.mk
 679         @$(MKCONFIG) -n $@ EB+MCF-EV123 m68k mcf52x2 EB+MCF-EV123 BuS
 680
 681 M54451EVB_config \
 682 M54451EVB_stmicro_config :      unconfig
 683         @mkdir -p $(obj)include
 684         @mkdir -p $(obj)board/freescale/m54451evb
 685         @case "$@" in \
 686         M54451EVB_config)               FLASH=NOR;; \
 687         M54451EVB_stmicro_config)       FLASH=STMICRO;; \
 688         esac; \
 689         if [ "$${FLASH}" = "NOR" ] ; then \
 690                 echo "CONFIG_SYS_TEXT_BASE = 0x00000000" > $(obj)board/freescale/m54451evb/config.tmp ; \
 691         fi; \
 692         if [ "$${FLASH}" = "STMICRO" ] ; then \
 693                 echo "#define CONFIG_CF_SBF"    >> $(obj)include/config.h ; \
 694                 echo "#define CONFIG_SYS_STMICRO_BOOT"  >> $(obj)include/config.h ; \
 695                 echo "CONFIG_SYS_TEXT_BASE = 0x47E00000" > $(obj)board/freescale/m54451evb/config.tmp ; \
 696         fi; \
 697         echo "#define CONFIG_SYS_INPUT_CLKSRC 24000000" >> $(obj)include/config.h ;
 698         @$(MKCONFIG) -n $@ -a M54451EVB m68k mcf5445x m54451evb freescale
 699
 700 M54455EVB_config \
 701 M54455EVB_atmel_config \
 702 M54455EVB_intel_config \
 703 M54455EVB_a33_config \
 704 M54455EVB_a66_config \
 705 M54455EVB_i33_config \
 706 M54455EVB_i66_config \
 707 M54455EVB_stm33_config :        unconfig
 708         @mkdir -p $(obj)include
 709         @mkdir -p $(obj)board/freescale/m54455evb
 710         @case "$@" in \
 711         M54455EVB_config)               FLASH=ATMEL; FREQ=33333333;; \
 712         M54455EVB_atmel_config)         FLASH=ATMEL; FREQ=33333333;; \
 713         M54455EVB_intel_config)         FLASH=INTEL; FREQ=33333333;; \
 714         M54455EVB_a33_config)           FLASH=ATMEL; FREQ=33333333;; \
 715         M54455EVB_a66_config)           FLASH=ATMEL; FREQ=66666666;; \
 716         M54455EVB_i33_config)           FLASH=INTEL; FREQ=33333333;; \
 717         M54455EVB_i66_config)           FLASH=INTEL; FREQ=66666666;; \
 718         M54455EVB_stm33_config)         FLASH=STMICRO; FREQ=33333333;; \
 719         esac; \
 720         if [ "$${FLASH}" = "INTEL" ] ; then \
 721                 echo "#define CONFIG_SYS_INTEL_BOOT" >> $(obj)include/config.h ; \
 722                 echo "CONFIG_SYS_TEXT_BASE = 0x00000000" > $(obj)board/freescale/m54455evb/config.tmp ; \
 723         fi; \
 724         if [ "$${FLASH}" = "ATMEL" ] ; then \
 725                 echo "#define CONFIG_SYS_ATMEL_BOOT"    >> $(obj)include/config.h ; \
 726                 echo "CONFIG_SYS_TEXT_BASE = 0x04000000" > $(obj)board/freescale/m54455evb/config.tmp ; \
 727         fi; \
 728         if [ "$${FLASH}" = "STMICRO" ] ; then \
 729                 echo "#define CONFIG_CF_SBF"    >> $(obj)include/config.h ; \
 730                 echo "#define CONFIG_SYS_STMICRO_BOOT"  >> $(obj)include/config.h ; \
 731                 echo "CONFIG_SYS_TEXT_BASE = 0x4FE00000" > $(obj)board/freescale/m54455evb/config.tmp ; \
 732         fi; \
 733         echo "#define CONFIG_SYS_INPUT_CLKSRC $${FREQ}" >> $(obj)include/config.h ; \
 734         $(XECHO) "... with $${FREQ}Hz input clock"
 735         @$(MKCONFIG) -n $@ -a M54455EVB m68k mcf5445x m54455evb freescale
 736
 737 #========================================================================
 738 # ARM
 739 #========================================================================
 740
 741 xtract_omap1610xxx = $(subst _cs0boot,,$(subst _cs3boot,,$(subst _cs_autoboot,,$(subst _config,,$1))))
 742
 743 omap1610inn_config \
 744 omap1610inn_cs0boot_config \
 745 omap1610inn_cs3boot_config \
 746 omap1610inn_cs_autoboot_config \
 747 omap1610h2_config \
 748 omap1610h2_cs0boot_config \
 749 omap1610h2_cs3boot_config \
 750 omap1610h2_cs_autoboot_config:  unconfig
 751         @mkdir -p $(obj)include
 752         @if [ "$(findstring _cs0boot_, $@)" ] ; then \
 753                 echo "#define CONFIG_CS0_BOOT" >> .$(obj)include/config.h ; \
 754         elif [ "$(findstring _cs_autoboot_, $@)" ] ; then \
 755                 echo "#define CONFIG_CS_AUTOBOOT" >> $(obj)include/config.h ; \
 756         else \
 757                 echo "#define CONFIG_CS3_BOOT" >> $(obj)include/config.h ; \
 758         fi;
 759         @$(MKCONFIG) -n $@ -a $(call xtract_omap1610xxx,$@) arm arm926ejs omap1610inn ti omap
 760
 761 omap730p2_config \
 762 omap730p2_cs0boot_config \
 763 omap730p2_cs3boot_config :      unconfig
 764         @mkdir -p $(obj)include
 765         @if [ "$(findstring _cs0boot_, $@)" ] ; then \
 766                 echo "#define CONFIG_CS0_BOOT" >> $(obj)include/config.h ; \
 767         else \
 768                 echo "#define CONFIG_CS3_BOOT" >> $(obj)include/config.h ; \
 769         fi;
 770         @$(MKCONFIG) -n $@ -a omap730p2 arm arm926ejs omap730p2 ti omap
 771
 772 spear300_config \
 773 spear310_config \
 774 spear320_config :       unconfig
 775         @$(MKCONFIG) -n $@ -t $@ spear3xx arm arm926ejs $(@:_config=) spear spear
 776
 777 spear600_config :       unconfig
 778         @$(MKCONFIG) -n $@ -t $@ spear6xx arm arm926ejs $(@:_config=) spear spear
 779
 780 SX1_stdout_serial_config \
 781 SX1_config:             unconfig
 782         @mkdir -p $(obj)include
 783         @if [ "$(findstring _stdout_serial_, $@)" ] ; then \
 784                 echo "#undef CONFIG_STDOUT_USBTTY" >> $(obj)include/config.h ; \
 785         else \
 786                 echo "#define CONFIG_STDOUT_USBTTY" >> $(obj)include/config.h ; \
 787         fi;
 788         @$(MKCONFIG) -n $@ SX1 arm arm925t sx1
 789
 790 #########################################################################
 791 ## XScale Systems
 792 #########################################################################
 793
 794 pdnb3_config \
 795 scpu_config:    unconfig
 796         @mkdir -p $(obj)include
 797         @if [ "$(findstring scpu_,$@)" ] ; then \
 798                 echo "#define CONFIG_SCPU"      >>$(obj)include/config.h ; \
 799         fi
 800         @$(MKCONFIG) -n $@ -a pdnb3 arm ixp pdnb3 prodrive
 801
 802 #########################################################################
 803 ## ARM1136 Systems
 804 #########################################################################
 805
 806 apollon_config          : unconfig
 807         @mkdir -p $(obj)include
 808         @echo "#define CONFIG_ONENAND_U_BOOT" > $(obj)include/config.h
 809         @echo "CONFIG_ONENAND_U_BOOT = y" >> $(obj)include/config.mk
 810         @$(MKCONFIG) $@ arm arm1136 apollon - omap24xx
 811
 812 #########################################################################
 813 ## ARM1176 Systems
 814 #########################################################################
 815 smdk6400_noUSB_config   \
 816 smdk6400_config :       unconfig
 817         @mkdir -p $(obj)include $(obj)board/samsung/smdk6400
 818         @mkdir -p $(obj)nand_spl/board/samsung/smdk6400
 819         @echo "#define CONFIG_NAND_U_BOOT" > $(obj)include/config.h
 820         @echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk
 821         @if [ -z "$(findstring smdk6400_noUSB_config,$@)" ]; then                       \
 822                 echo "RAM_TEXT = 0x57e00000" >> $(obj)board/samsung/smdk6400/config.tmp;\
 823         else                                                                            \
 824                 echo "RAM_TEXT = 0xc7e00000" >> $(obj)board/samsung/smdk6400/config.tmp;\
 825         fi
 826         @$(MKCONFIG) smdk6400 arm arm1176 smdk6400 samsung s3c64xx
 827         @echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk
 828
 829 #########################################################################
 830 #########################################################################
 831
 832 clean:
 833         @rm -f $(obj)examples/standalone/82559_eeprom                     \
 834                $(obj)examples/standalone/atmel_df_pow2                    \
 835                $(obj)examples/standalone/eepro100_eeprom                  \
 836                $(obj)examples/standalone/hello_world                      \
 837                $(obj)examples/standalone/interrupt                        \
 838                $(obj)examples/standalone/mem_to_mem_idma2intr             \
 839                $(obj)examples/standalone/sched                            \
 840                $(obj)examples/standalone/smc911{11,x}_eeprom              \
 841                $(obj)examples/standalone/test_burst                       \
 842                $(obj)examples/standalone/timer
 843         @rm -f $(obj)examples/api/demo{,.bin}
 844         @rm -f $(obj)tools/bmp_logo        $(obj)tools/easylogo/easylogo  \
 845                $(obj)tools/env/{fw_printenv,fw_setenv}                    \
 846                $(obj)tools/envcrc                                         \
 847                $(obj)tools/gdb/{astest,gdbcont,gdbsend}                   \
 848                $(obj)tools/gen_eth_addr    $(obj)tools/img2srec           \
 849                $(obj)tools/mkimage         $(obj)tools/mpc86x_clk         \
 850                $(obj)tools/ncb             $(obj)tools/ubsha1
 851         @rm -f $(obj)board/cray/L1/{bootscript.c,bootscript.image}        \
 852                $(obj)board/matrix_vision/*/bootscript.img                 \
 853                $(obj)board/voiceblue/eeprom                               \
 854                $(obj)u-boot.lds                                           \
 855                $(obj)arch/blackfin/cpu/bootrom-asm-offsets.[chs]          \
 856                $(obj)arch/blackfin/cpu/init.{lds,elf}
 857         @rm -f $(obj)include/bmp_logo.h
 858         @rm -f $(obj)lib/asm-offsets.s
 859         @rm -f $(obj)include/generated/asm-offsets.h
 860         @rm -f $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s
 861         @rm -f $(obj)nand_spl/{u-boot.lds,u-boot-nand_spl.lds,u-boot-spl,u-boot-spl.map,System.map}
 862         @rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl.map}
 863         @rm -f $(obj)mmc_spl/{u-boot.lds,u-boot-spl,u-boot-spl.map,u-boot-spl.bin,u-boot-mmc-spl.bin}
 864         @rm -f $(ONENAND_BIN)
 865         @rm -f $(obj)onenand_ipl/u-boot.lds
 866         @rm -f $(obj)spl/{u-boot-spl,u-boot-spl.bin,u-boot-spl.lds,u-boot-spl.map}
 867         @rm -f $(obj)MLO
 868         @rm -f $(TIMESTAMP_FILE) $(VERSION_FILE)
 869         @find $(OBJTREE) -type f \
 870                 \( -name 'core' -o -name '*.bak' -o -name '*~' \
 871                 -o -name '*.o'  -o -name '*.a' -o -name '*.exe' \) -print \
 872                 | xargs rm -f
 873
 874 clobber:        clean
 875         @find $(OBJTREE) -type f \( -name '*.depend*' \
 876                 -o -name '*.srec' -o -name '*.bin' -o -name u-boot.img \) \
 877                 -print0 \
 878                 | xargs -0 rm -f
 879         @rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS \
 880                 $(obj)cscope.* $(obj)*.*~
 881         @rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL-y)
 882         @rm -f $(obj)u-boot.kwb
 883         @rm -f $(obj)u-boot.imx
 884         @rm -f $(obj)u-boot.ubl
 885         @rm -f $(obj)u-boot.dtb
 886         @rm -f $(obj)tools/{env/crc32.c,inca-swap-bytes}
 887         @rm -f $(obj)arch/powerpc/cpu/mpc824x/bedbug_603e.c
 888         @rm -fr $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm
 889         @rm -fr $(obj)include/generated
 890         @[ ! -d $(obj)nand_spl ] || find $(obj)nand_spl -name "*" -type l -print | xargs rm -f
 891         @[ ! -d $(obj)onenand_ipl ] || find $(obj)onenand_ipl -name "*" -type l -print | xargs rm -f
 892         @[ ! -d $(obj)mmc_spl ] || find $(obj)mmc_spl -name "*" -type l -print | xargs rm -f
 893         @rm -f $(obj)dts/*.tmp
 894
 895 mrproper \
 896 distclean:      clobber unconfig
 897 ifneq ($(OBJTREE),$(SRCTREE))
 898         rm -rf $(obj)*
 899 endif
 900
 901 backup:
 902         F=`basename $(TOPDIR)` ; cd .. ; \
 903         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
 904
 905 #########################################################################