Makefile

   1 # Makefile for buildroot2
   2 #
   3 # Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
   4 # Copyright (C) 2006-2009 by the Buildroot developers <buildroot@uclibc.org>
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14 # General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 #
  20
  21 #--------------------------------------------------------------
  22 # Just run 'make menuconfig', configure stuff, then run 'make'.
  23 # You shouldn't need to mess with anything beyond this point...
  24 #--------------------------------------------------------------
  25 TOPDIR=./
  26 CONFIG_CONFIG_IN=Config.in
  27 CONFIG_DEFCONFIG=.defconfig
  28 CONFIG=package/config
  29 DATE:=$(shell date +%Y%m%d)
  30
  31 noconfig_targets:=menuconfig config oldconfig randconfig \
  32         defconfig allyesconfig allnoconfig release tags \
  33         source-check help
  34
  35
  36 # Use shell variables, if defined
  37 ifneq ($(BUILDROOT_LOCAL),)
  38 BR2_LOCAL:=$(BUILDROOT_LOCAL)
  39 else
  40 BR2_LOCAL:=$(TOPDIR)/local
  41 endif
  42
  43 # Variables for use in Make constructs
  44 comma:=,
  45 empty:=
  46 space:=$(empty) $(empty)
  47
  48 # $(shell find . -name *_defconfig |sed 's/.*\///')
  49 # Pull in the user's configuration file
  50 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
  51 ifeq ($(BOARD),)
  52 # if "make BOARD=xyz" command
  53 -include .config
  54 else
  55 # if "make" command
  56 -include $(BR2_LOCAL)/$(BOARD)/$(BOARD).config
  57 endif
  58 endif
  59
  60 # Override BR2_DL_DIR if shell variable defined
  61 ifneq ($(BUILDROOT_DL_DIR),)
  62 BR2_DL_DIR:=$(BUILDROOT_DL_DIR)
  63 endif
  64 LOCAL:=$(BR2_LOCAL)
  65
  66 # To put more focus on warnings, be less verbose as default
  67 # Use 'make V=1' to see the full commands
  68 ifdef V
  69   ifeq ("$(origin V)", "command line")
  70     KBUILD_VERBOSE=$(V)
  71   endif
  72 endif
  73 ifndef KBUILD_VERBOSE
  74   KBUILD_VERBOSE=0
  75 endif
  76
  77 ifeq ($(KBUILD_VERBOSE),1)
  78   quiet=
  79   Q=
  80 ifndef VERBOSE
  81   VERBOSE=1
  82 endif
  83 else
  84   quiet=quiet_
  85   Q=@
  86 endif
  87
  88 # we want bash as shell
  89 SHELL:=$(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  90         else if [ -x /bin/bash ]; then echo /bin/bash; \
  91         else echo sh; fi; fi)
  92
  93 # kconfig uses CONFIG_SHELL
  94 CONFIG_SHELL:=$(SHELL)
  95
  96 export SHELL CONFIG_SHELL quiet Q KBUILD_VERBOSE VERBOSE
  97
  98 ifndef HOSTAR
  99 HOSTAR:=ar
 100 endif
 101 ifndef HOSTAS
 102 HOSTAS:=as
 103 endif
 104 ifndef HOSTCC
 105 HOSTCC:=gcc
 106 else
 107 endif
 108 ifndef HOSTCXX
 109 HOSTCXX:=g++
 110 endif
 111 ifndef HOSTFC
 112 HOSTFC:=gfortran
 113 endif
 114 ifndef HOSTCPP
 115 HOSTCPP:=cpp
 116 endif
 117 ifndef HOSTLD
 118 HOSTLD:=ld
 119 endif
 120 ifndef HOSTLN
 121 HOSTLN:=ln
 122 endif
 123 ifndef HOSTNM
 124 HOSTNM:=nm
 125 endif
 126 HOSTAR:=$(shell which $(HOSTAR) || type -p $(HOSTAR) || echo ar)
 127 HOSTAS:=$(shell which $(HOSTAS) || type -p $(HOSTAS) || echo as)
 128 HOSTCC:=$(shell which $(HOSTCC) || type -p $(HOSTCC) || echo gcc)
 129 HOSTCXX:=$(shell which $(HOSTCXX) || type -p $(HOSTCXX) || echo g++)
 130 HOSTFC:=$(shell which $(HOSTLD) || type -p $(HOSTLD) || echo || which g77 || type -p g77 || echo gfortran)
 131 HOSTCPP:=$(shell which $(HOSTCPP) || type -p $(HOSTCPP) || echo cpp)
 132 HOSTLD:=$(shell which $(HOSTLD) || type -p $(HOSTLD) || echo ld)
 133 HOSTLN:=$(shell which $(HOSTLN) || type -p $(HOSTLN) || echo ln)
 134 HOSTNM:=$(shell which $(HOSTNM) || type -p $(HOSTNM) || echo nm)
 135
 136 ifndef CFLAGS_FOR_BUILD
 137 CFLAGS_FOR_BUILD:=-g -O2
 138 endif
 139 ifndef CXXFLAGS_FOR_BUILD
 140 CXXFLAGS_FOR_BUILD:=-g -O2
 141 endif
 142 ifndef FCFLAGS_FOR_BUILD
 143 FCFLAGS_FOR_BUILD:=-g -O2
 144 endif
 145 export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTFC HOSTLD
 146
 147
 148 ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 149
 150 # cc-option
 151 # Usage: cflags-y+=$(call cc-option, -march=winchip-c6, -march=i586)
 152 # sets -march=winchip-c6 if supported else falls back to -march=i586
 153 # without checking the latter.
 154 cc-option=$(shell if $(TARGET_CC) $(TARGET_CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
 155         > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
 156
 157 #############################################################
 158 #
 159 # Hide troublesome environment variables from sub processes
 160 #
 161 #############################################################
 162 unexport CROSS_COMPILE
 163 unexport ARCH
 164
 165 #############################################################
 166 #
 167 # Setup the proper filename extensions for the host
 168 #
 169 ##############################################################
 170 ifneq ($(findstring linux,$(BR2_GNU_BUILD_SUFFIX)),)
 171 HOST_EXEEXT:=
 172 HOST_LIBEXT:=.a
 173 HOST_SHREXT:=.so
 174 endif
 175 ifneq ($(findstring apple,$(BR2_GNU_BUILD_SUFFIX)),)
 176 HOST_EXEEXT:=
 177 HOST_LIBEXT:=.a
 178 HOST_SHREXT:=.dylib
 179 endif
 180 ifneq ($(findstring cygwin,$(BR2_GNU_BUILD_SUFFIX)),)
 181 HOST_EXEEXT:=.exe
 182 HOST_LIBEXT:=.lib
 183 HOST_SHREXT:=.dll
 184 HOST_LOADLIBES="-lcurses -lintl"
 185 export HOST_LOADLIBES
 186 endif
 187 ifneq ($(findstring mingw,$(BR2_GNU_BUILD_SUFFIX)),)
 188 HOST_EXEEXT:=.exe
 189 HOST_LIBEXT:=.lib
 190 HOST_SHREXT:=.dll
 191 endif
 192
 193 # The preferred type of libs we build for the target
 194 ifeq ($(BR2_PREFER_STATIC_LIB),y)
 195 LIBTGTEXT=.a
 196 #PREFERRED_LIB_FLAGS:=--disable-shared --enable-static
 197 else
 198 LIBTGTEXT=.so
 199 #PREFERRED_LIB_FLAGS:=--disable-static --enable-shared
 200 endif
 201 PREFERRED_LIB_FLAGS:=--enable-static --enable-shared
 202
 203 ##############################################################
 204 #
 205 # The list of stuff to build for the target toolchain
 206 # along with the packages to build for the target.
 207 #
 208 ##############################################################
 209 ifeq ($(BR2_TOOLCHAIN_SOURCE),y)
 210 BASE_TARGETS:=uclibc-configured binutils cross_compiler uclibc-target-utils kernel-headers
 211 else
 212 BASE_TARGETS:=uclibc
 213 endif
 214 TARGETS:=
 215
 216 # setup our paths
 217 include project/Makefile.in
 218
 219 BR2_DEPENDS_DIR=$(PROJECT_BUILD_DIR)/buildroot-config
 220
 221 include toolchain/Makefile.in
 222 include package/Makefile.in
 223
 224 #############################################################
 225 #
 226 # You should probably leave this stuff alone unless you know
 227 # what you are doing.
 228 #
 229 #############################################################
 230
 231 all: world
 232
 233 # In this section, we need .config
 234 include .config.cmd
 235
 236 include project/*.mk
 237
 238 # We also need the various per-package makefiles, which also add
 239 # each selected package to TARGETS if that package was selected
 240 # in the .config file.
 241 ifeq ($(BR2_TOOLCHAIN_SOURCE),y)
 242 # avoid pulling in external toolchain which is broken for toplvl parallel builds
 243 # Explicit ordering:
 244 include toolchain/dependencies/dependencies.mk
 245 include toolchain/binutils/binutils.mk
 246 include toolchain/ccache/ccache.mk
 247 include toolchain/elf2flt/elf2flt.mk
 248 include toolchain/gcc/gcc-uclibc-3.x.mk
 249 include toolchain/gcc/gcc-uclibc-4.x.mk
 250 include toolchain/gdb/gdb.mk
 251 include toolchain/kernel-headers/kernel-headers.mk
 252 include toolchain/mklibs/mklibs.mk
 253 include toolchain/sstrip/sstrip.mk
 254 include toolchain/uClibc/uclibc.mk
 255 else
 256 include toolchain/*/*.mk
 257 endif
 258
 259 ifeq ($(BR2_PACKAGE_LINUX),y)
 260 TARGETS+=linux26-modules
 261 endif
 262
 263 include package/*/*.mk
 264
 265 TARGETS+=target-devfiles
 266
 267 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 268 TARGETS+=target-purgelocales
 269 endif
 270
 271 # target stuff is last so it can override anything else
 272 include target/Makefile.in
 273
 274 TARGETS+=erase-fakeroots
 275
 276 TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS))
 277 TARGETS_SOURCE:=$(patsubst %,%-source,$(TARGETS) $(BASE_TARGETS))
 278 TARGETS_DIRCLEAN:=$(patsubst %,%-dirclean,$(TARGETS))
 279 TARGETS_ALL:=$(patsubst %,__real_tgt_%,$(TARGETS))
 280 # all targets depend on the crosscompiler and it's prerequisites
 281 $(TARGETS_ALL): __real_tgt_%: $(BASE_TARGETS) %
 282
 283 $(BR2_DEPENDS_DIR): .config
 284         rm -rf $@
 285         mkdir -p $(@D)
 286         cp -dpRf $(CONFIG)/buildroot-config $@
 287
 288 dirs: $(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 289         $(HOST_DIR) $(BR2_DEPENDS_DIR) $(BINARIES_DIR) $(PROJECT_BUILD_DIR) \
 290         $(PROJECT_BUILD_DIR)/autotools-stamps $(STAMP_DIR)
 291
 292 $(BASE_TARGETS): dirs
 293
 294 world: dependencies dirs target-host-info $(BASE_TARGETS) $(TARGETS_ALL)
 295
 296
 297 .PHONY: all world dirs clean dirclean distclean source \
 298         $(BASE_TARGETS) $(TARGETS) $(TARGETS_ALL) \
 299         $(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) \
 300         $(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 301         $(HOST_DIR) $(BR2_DEPENDS_DIR) $(BINARIES_DIR) $(PROJECT_BUILD_DIR) \
 302         $(PROJECT_BUILD_DIR)/autotools-stamps $(STAMP_DIR)
 303
 304 #############################################################
 305 #
 306 # staging and target directories do NOT list these as
 307 # dependencies anywhere else
 308 #
 309 #############################################################
 310 $(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(HOST_DIR) $(PROJECT_BUILD_DIR) \
 311         $(PROJECT_BUILD_DIR)/autotools-stamps $(BINARIES_DIR) $(STAMP_DIR):
 312         @mkdir -p $@
 313
 314 $(STAGING_DIR):
 315         @mkdir -p $(STAGING_DIR)/bin
 316         @mkdir -p $(STAGING_DIR)/lib
 317 ifeq ($(BR2_TOOLCHAIN_SYSROOT),y)
 318         @mkdir -p $(STAGING_DIR)/usr/lib
 319 else
 320 ifneq ($(BR2_TOOLCHAIN_EXTERNAL),y)
 321         @ln -snf . $(STAGING_DIR)/usr
 322         @mkdir -p $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)
 323         @ln -snf ../lib $(STAGING_DIR)/usr/lib
 324         @ln -snf ../lib $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib
 325 endif
 326 endif
 327         @mkdir -p $(STAGING_DIR)/usr/include
 328
 329 $(PROJECT_BUILD_DIR)/.root:
 330         mkdir -p $(TARGET_DIR)
 331         if ! [ -d "$(TARGET_DIR)/bin" ]; then \
 332                 if [ -d "$(TARGET_SKELETON)" ]; then \
 333                         cp -fa $(TARGET_SKELETON)/* $(TARGET_DIR)/; \
 334                 fi; \
 335                 touch $(STAGING_DIR)/.fakeroot.00000; \
 336         fi
 337         -find $(TARGET_DIR) -type d -name CVS -o -name .svn | xargs rm -rf
 338         -find $(TARGET_DIR) -type f -name .empty | xargs rm -rf
 339         touch $@
 340
 341 $(TARGET_DIR): $(PROJECT_BUILD_DIR)/.root
 342
 343 erase-fakeroots:
 344         rm -f $(PROJECT_BUILD_DIR)/.fakeroot*
 345
 346 target-devfiles:
 347 ifeq ($(BR2_HAVE_DEVFILES),y)
 348         ( scripts/copy.sh $(STAGING_DIR) $(TARGET_DIR) )
 349 else
 350         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/lib/pkgconfig
 351         find $(TARGET_DIR)/lib \( -name '*.a' -o -name '*.la' \) -delete
 352         find $(TARGET_DIR)/usr/lib \( -name '*.a' -o -name '*.la' \) -delete
 353 endif
 354
 355 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 356 LOCALE_WHITELIST=$(PROJECT_BUILD_DIR)/locales.nopurge
 357 LOCALE_NOPURGE=$(strip $(subst ",,$(BR2_ENABLE_LOCALE_WHITELIST)))
 358 #"))
 359
 360 target-purgelocales:
 361         rm -f $(LOCALE_WHITELIST)
 362         for i in $(LOCALE_NOPURGE); do echo $$i >> $(LOCALE_WHITELIST); done
 363
 364         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/man /usr/share/man)); \
 365         do \
 366                 for lang in $$(cd $$dir; ls .|grep -v man); \
 367                 do \
 368                         grep -qx $$lang $(LOCALE_WHITELIST) || rm -rf $$dir/$$lang; \
 369                 done; \
 370         done
 371 endif
 372
 373 source: $(TARGETS_SOURCE) $(HOST_SOURCE)
 374
 375 _source-check:
 376         $(MAKE) SPIDER=--spider source
 377
 378 external-deps:
 379         @$(MAKE) -Bs BR2_WGET=$(TOPDIR)/toolchain/wget-show-external-deps.sh \
 380                 SPIDER=--spider source
 381
 382 #############################################################
 383 #
 384 # Cleanup and misc junk
 385 #
 386 #############################################################
 387 clean: $(TARGETS_CLEAN)
 388         rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE) $(PROJECT_BUILD_DIR)/.root $(PROJECT_BUILD_DIR)/autotools-stamps $(STAMP_DIR)
 389
 390 dirclean: $(TARGETS_DIRCLEAN)
 391         rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE) $(PROJECT_BUILD_DIR)/.root $(PROJECT_BUILD_DIR)/autotools-stamps $(STAMP_DIR)
 392
 393 distclean:
 394 ifeq ($(DL_DIR),$(BASE_DIR)/dl)
 395         rm -rf $(DL_DIR)
 396 endif
 397         rm -rf $(BUILD_DIR) $(PROJECT_BUILD_DIR) $(BINARIES_DIR) \
 398         $(LINUX_KERNEL) $(BASE_DIR)/include \
 399                 .config.cmd
 400         $(MAKE) -C $(CONFIG) clean
 401
 402 sourceball:
 403         rm -rf $(BUILD_DIR) $(PROJECT_BUILD_DIR) $(BINARIES_DIR)
 404         set -e; \
 405         cd ..; \
 406         rm -f buildroot.tar.bz2; \
 407         tar -cvf buildroot.tar buildroot; \
 408         bzip2 -9 buildroot.tar; \
 409
 410
 411 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 412
 413 all: menuconfig
 414
 415 # configuration
 416 # ---------------------------------------------------------------------------
 417
 418 HOSTCFLAGS=$(CFLAGS_FOR_BUILD)
 419 export HOSTCFLAGS
 420
 421 $(CONFIG)/conf:
 422         @mkdir -p $(CONFIG)/buildroot-config
 423         $(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf
 424         -@if [ ! -f .config ]; then \
 425                 cp $(CONFIG_DEFCONFIG) .config; \
 426         fi
 427 $(CONFIG)/mconf:
 428         @mkdir -p $(CONFIG)/buildroot-config
 429         $(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf mconf
 430         -@if [ ! -f .config ]; then \
 431                 cp $(CONFIG_DEFCONFIG) .config; \
 432         fi
 433
 434 menuconfig: $(CONFIG)/mconf
 435         @mkdir -p $(CONFIG)/buildroot-config
 436         @if ! KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 437                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 438                 $(CONFIG)/mconf $(CONFIG_CONFIG_IN); then \
 439                 test -f .config.cmd || rm -f .config; \
 440         fi
 441
 442 config: $(CONFIG)/conf
 443         @mkdir -p $(CONFIG)/buildroot-config
 444         @KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 445                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 446                 $(CONFIG)/conf $(CONFIG_CONFIG_IN)
 447
 448 oldconfig: $(CONFIG)/conf
 449         @mkdir -p $(CONFIG)/buildroot-config
 450         @KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 451                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 452                 $(CONFIG)/conf -o $(CONFIG_CONFIG_IN)
 453
 454 randconfig: $(CONFIG)/conf
 455         @mkdir -p $(CONFIG)/buildroot-config
 456         @KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 457                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 458                 $(CONFIG)/conf -r $(CONFIG_CONFIG_IN)
 459
 460 allyesconfig: $(CONFIG)/conf
 461         cat $(CONFIG_DEFCONFIG) > .config
 462         @mkdir -p $(CONFIG)/buildroot-config
 463         @KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 464                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 465                 $(CONFIG)/conf -y $(CONFIG_CONFIG_IN)
 466         #sed -i -e "s/^CONFIG_DEBUG.*/# CONFIG_DEBUG is not set/" .config
 467
 468 allnoconfig: $(CONFIG)/conf
 469         @mkdir -p $(CONFIG)/buildroot-config
 470         @KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 471                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 472                 $(CONFIG)/conf -n $(CONFIG_CONFIG_IN)
 473
 474 defconfig: $(CONFIG)/conf
 475         @mkdir -p $(CONFIG)/buildroot-config
 476         @KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
 477                 KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
 478                 $(CONFIG)/conf -d $(CONFIG_CONFIG_IN)
 479
 480 # check if download URLs are outdated
 481 source-check: allyesconfig
 482         $(MAKE) _source-check
 483
 484 #############################################################
 485 #
 486 # Cleanup and misc junk
 487 #
 488 #############################################################
 489 clean:
 490         rm -f .config .config.old .config.cmd .tmpconfig.h .lognr.*
 491         -$(MAKE) -C $(CONFIG) clean
 492
 493 distclean: clean
 494         rm -rf sources/*
 495
 496
 497 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 498
 499 flush:
 500         rm -f $(PROJECT_BUILD_DIR)/tgt-config.cache
 501
 502 %_defconfig: $(CONFIG)/conf
 503         cp $(shell find ./target/ -name $@) .config
 504         -@$(MAKE) oldconfig
 505
 506 update:
 507         cp .config $(BOARD_PATH)/$(PROJECT)_defconfig
 508
 509 configured: dirs host-sed kernel-headers uclibc-config busybox-config linux26-config
 510
 511 prepatch:       gcc-patched binutils-patched gdb-patched uclibc-patched
 512
 513 .lognr.$(PROJECT):
 514         @echo "0" > .lognr.$(PROJECT)
 515
 516 log:    .lognr.$(PROJECT)
 517         @expr `cat .lognr.$(PROJECT)` + 1 > .lognr.$(PROJECT)
 518         @echo Creating $(PROJECT)-`cat .lognr.$(PROJECT)`.log
 519         @$(MAKE) > $(PROJECT)-`cat .lognr.$(PROJECT)`.log 2>&1
 520
 521
 522 cross: $(BASE_TARGETS)
 523
 524 help:
 525         @echo 'Cleaning:'
 526         @echo '  clean                  - delete temporary files created by build'
 527         @echo '  distclean              - delete all non-source files (including .config)'
 528         @echo
 529         @echo 'Build:'
 530         @echo '  all                    - make world'
 531         @echo
 532         @echo 'Configuration:'
 533         @echo '  menuconfig             - interactive curses-based configurator'
 534         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 535         @echo '  configured             - make {uclibc/busybox/linux26}-config'
 536         @echo '  saveconfig             - save current configuration under local/<project>'
 537         @echo '  getconfig              - restore saved configuration from local/<project>'
 538         @echo
 539         @echo 'Miscellaneous:'
 540         @echo '  source                 - download all sources needed for offline-build'
 541         @echo '  source-check           - check all packages for valid download URLs'
 542         @echo '  external-deps          - list external packages used'
 543         @echo '  flush                  - flush configuration cache'
 544         @echo
 545         @echo 'See docs/README and docs/buildroot.html for further details'
 546         @echo
 547
 548 release: distclean
 549         OUT=buildroot-$$(grep -A2 BR2_VERSION $(CONFIG_CONFIG_IN)|grep default|cut -f2 -d\"); \
 550         rm -rf ../$$OUT*; cp -al . ../$$OUT; cd ..; \
 551         tar cfz $$OUT.tar.gz --exclude .svn --exclude .git --exclude \*~ $$OUT; \
 552         rm -rf $$OUT
 553
 554 .PHONY: dummy subdirs release distclean clean config oldconfig \
 555         menuconfig tags check test depend defconfig help
 556