Makefile

   1 # Makefile for buildroot
   2 #
   3 # Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
   4 # Copyright (C) 2006-2014 by the Buildroot developers <buildroot@uclibc.org>
   5 # Copyright (C) 2014-2016 by the Buildroot developers <buildroot@buildroot.org>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15 # General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20 #
  21
  22 #--------------------------------------------------------------
  23 # Just run 'make menuconfig', configure stuff, then run 'make'.
  24 # You shouldn't need to mess with anything beyond this point...
  25 #--------------------------------------------------------------
  26
  27 # we want bash as shell
  28 SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  29          else if [ -x /bin/bash ]; then echo /bin/bash; \
  30          else echo sh; fi; fi)
  31
  32 # Trick for always running with a fixed umask
  33 UMASK = 0022
  34 ifneq ($(shell umask),$(UMASK))
  35 .PHONY: _all $(MAKECMDGOALS)
  36
  37 $(MAKECMDGOALS): _all
  38         @:
  39
  40 _all:
  41         @umask $(UMASK) && $(MAKE) --no-print-directory $(MAKECMDGOALS)
  42
  43 else # umask
  44
  45 # This is our default rule, so must come first
  46 all:
  47
  48 # Set and export the version string
  49 export BR2_VERSION := 2016.11-git
  50
  51 # Save running make version since it's clobbered by the make package
  52 RUNNING_MAKE_VERSION := $(MAKE_VERSION)
  53
  54 # Check for minimal make version (note: this check will break at make 10.x)
  55 MIN_MAKE_VERSION = 3.81
  56 ifneq ($(firstword $(sort $(RUNNING_MAKE_VERSION) $(MIN_MAKE_VERSION))),$(MIN_MAKE_VERSION))
  57 $(error You have make '$(RUNNING_MAKE_VERSION)' installed. GNU make >= $(MIN_MAKE_VERSION) is required)
  58 endif
  59
  60 # Parallel execution of this Makefile is disabled because it changes
  61 # the packages building order, that can be a problem for two reasons:
  62 # - If a package has an unspecified optional dependency and that
  63 #   dependency is present when the package is built, it is used,
  64 #   otherwise it isn't (but compilation happily proceeds) so the end
  65 #   result will differ if the order is swapped due to parallel
  66 #   building.
  67 # - Also changing the building order can be a problem if two packages
  68 #   manipulate the same file in the target directory.
  69 #
  70 # Taking into account the above considerations, if you still want to execute
  71 # this top-level Makefile in parallel comment the ".NOTPARALLEL" line and
  72 # use the -j<jobs> option when building, e.g:
  73 #      make -j$((`getconf _NPROCESSORS_ONLN`+1))
  74 .NOTPARALLEL:
  75
  76 # absolute path
  77 TOPDIR := $(CURDIR)
  78 CONFIG_CONFIG_IN = Config.in
  79 CONFIG = support/kconfig
  80 DATE := $(shell date +%Y%m%d)
  81
  82 # Compute the full local version string so packages can use it as-is
  83 # Need to export it, so it can be got from environment in children (eg. mconf)
  84 export BR2_VERSION_FULL := $(BR2_VERSION)$(shell $(TOPDIR)/support/scripts/setlocalversion)
  85
  86 noconfig_targets := menuconfig nconfig gconfig xconfig config oldconfig randconfig \
  87         defconfig %_defconfig allyesconfig allnoconfig silentoldconfig release \
  88         randpackageconfig allyespackageconfig allnopackageconfig \
  89         print-version olddefconfig distclean
  90
  91 # Some global targets do not trigger a build, but are used to collect
  92 # metadata, or do various checks. When such targets are triggered,
  93 # some packages should not do their configuration sanity
  94 # checks. Provide them a BR_BUILDING variable set to 'y' when we're
  95 # actually building and they should do their sanity checks.
  96 #
  97 # We're building in two situations: when MAKECMDGOALS is empty
  98 # (default target is to build), or when MAKECMDGOALS contains
  99 # something else than one of the nobuild_targets.
 100 nobuild_targets := source source-check \
 101         legal-info external-deps _external-deps \
 102         clean distclean help
 103 ifeq ($(MAKECMDGOALS),)
 104 BR_BUILDING = y
 105 else ifneq ($(filter-out $(nobuild_targets),$(MAKECMDGOALS)),)
 106 BR_BUILDING = y
 107 endif
 108
 109 # Include some helper macros and variables
 110 include support/misc/utils.mk
 111
 112 ifneq ("$(origin O)", "command line")
 113 O := output
 114 CONFIG_DIR := $(TOPDIR)
 115 NEED_WRAPPER =
 116 else
 117 # other packages might also support Linux-style out of tree builds
 118 # with the O=<dir> syntax (E.G. BusyBox does). As make automatically
 119 # forwards command line variable definitions those packages get very
 120 # confused. Fix this by telling make to not do so
 121 MAKEOVERRIDES =
 122 # strangely enough O is still passed to submakes with MAKEOVERRIDES
 123 # (with make 3.81 atleast), the only thing that changes is the output
 124 # of the origin function (command line -> environment).
 125 # Unfortunately some packages don't look at origin (E.G. uClibc 0.9.31+)
 126 # To really make O go away, we have to override it.
 127 override O := $(O)
 128 CONFIG_DIR := $(O)
 129 # we need to pass O= everywhere we call back into the toplevel makefile
 130 EXTRAMAKEARGS = O=$(O)
 131 NEED_WRAPPER = y
 132 endif
 133
 134 # bash prints the name of the directory on 'cd <dir>' if CDPATH is
 135 # set, so unset it here to not cause problems. Notice that the export
 136 # line doesn't affect the environment of $(shell ..) calls, so
 137 # explictly throw away any output from 'cd' here.
 138 export CDPATH :=
 139 BASE_DIR := $(shell mkdir -p $(O) && cd $(O) >/dev/null && pwd)
 140 $(if $(BASE_DIR),, $(error output directory "$(O)" does not exist))
 141
 142
 143 # Handling of BR2_EXTERNAL.
 144 #
 145 # The value of BR2_EXTERNAL is stored in .br-external in the output directory.
 146 # The location of the external.mk makefile fragments is computed in that file.
 147 # On subsequent invocations of make, this file is read in. BR2_EXTERNAL can
 148 # still be overridden on the command line, therefore the file is re-created
 149 # every time make is run.
 150
 151 BR2_EXTERNAL_FILE = $(BASE_DIR)/.br-external.mk
 152 -include $(BR2_EXTERNAL_FILE)
 153 $(shell support/scripts/br2-external \
 154         -m -o '$(BR2_EXTERNAL_FILE)' $(BR2_EXTERNAL))
 155 BR2_EXTERNAL_ERROR =
 156 include $(BR2_EXTERNAL_FILE)
 157 ifneq ($(BR2_EXTERNAL_ERROR),)
 158 $(error $(BR2_EXTERNAL_ERROR))
 159 endif
 160
 161 # To make sure that the environment variable overrides the .config option,
 162 # set this before including .config.
 163 ifneq ($(BR2_DL_DIR),)
 164 DL_DIR := $(BR2_DL_DIR)
 165 endif
 166 ifneq ($(BR2_CCACHE_DIR),)
 167 BR_CACHE_DIR := $(BR2_CCACHE_DIR)
 168 endif
 169
 170 # Need that early, before we scan packages
 171 # Avoids doing the $(or...) everytime
 172 BR_GRAPH_OUT := $(or $(BR2_GRAPH_OUT),pdf)
 173
 174 BUILD_DIR := $(BASE_DIR)/build
 175 BINARIES_DIR := $(BASE_DIR)/images
 176 TARGET_DIR := $(BASE_DIR)/target
 177 # initial definition so that 'make clean' works for most users, even without
 178 # .config. HOST_DIR will be overwritten later when .config is included.
 179 HOST_DIR := $(BASE_DIR)/host
 180 GRAPHS_DIR := $(BASE_DIR)/graphs
 181
 182 LEGAL_INFO_DIR = $(BASE_DIR)/legal-info
 183 REDIST_SOURCES_DIR_TARGET = $(LEGAL_INFO_DIR)/sources
 184 REDIST_SOURCES_DIR_HOST = $(LEGAL_INFO_DIR)/host-sources
 185 LICENSE_FILES_DIR_TARGET = $(LEGAL_INFO_DIR)/licenses
 186 LICENSE_FILES_DIR_HOST = $(LEGAL_INFO_DIR)/host-licenses
 187 LEGAL_MANIFEST_CSV_TARGET = $(LEGAL_INFO_DIR)/manifest.csv
 188 LEGAL_MANIFEST_CSV_HOST = $(LEGAL_INFO_DIR)/host-manifest.csv
 189 LEGAL_WARNINGS = $(LEGAL_INFO_DIR)/.warnings
 190 LEGAL_REPORT = $(LEGAL_INFO_DIR)/README
 191
 192 ################################################################################
 193 #
 194 # staging and target directories do NOT list these as
 195 # dependencies anywhere else
 196 #
 197 ################################################################################
 198 $(BUILD_DIR) $(TARGET_DIR) $(HOST_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST):
 199         @mkdir -p $@
 200
 201 BR2_CONFIG = $(CONFIG_DIR)/.config
 202
 203 # Pull in the user's configuration file
 204 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
 205 -include $(BR2_CONFIG)
 206 endif
 207
 208 # timezone and locale may affect build output
 209 ifeq ($(BR2_REPRODUCIBLE),y)
 210 export TZ=UTC
 211 export LANG=C
 212 export LC_ALL=C
 213 endif
 214
 215 # To put more focus on warnings, be less verbose as default
 216 # Use 'make V=1' to see the full commands
 217 ifeq ("$(origin V)", "command line")
 218   KBUILD_VERBOSE = $(V)
 219 endif
 220 ifndef KBUILD_VERBOSE
 221   KBUILD_VERBOSE = 0
 222 endif
 223
 224 ifeq ($(KBUILD_VERBOSE),1)
 225   Q =
 226 ifndef VERBOSE
 227   VERBOSE = 1
 228 endif
 229 export VERBOSE
 230 else
 231   Q = @
 232 endif
 233
 234 # kconfig uses CONFIG_SHELL
 235 CONFIG_SHELL := $(SHELL)
 236
 237 export SHELL CONFIG_SHELL Q KBUILD_VERBOSE
 238
 239 ifndef HOSTAR
 240 HOSTAR := ar
 241 endif
 242 ifndef HOSTAS
 243 HOSTAS := as
 244 endif
 245 ifndef HOSTCC
 246 HOSTCC := gcc
 247 HOSTCC := $(shell which $(HOSTCC) || type -p $(HOSTCC) || echo gcc)
 248 endif
 249 HOSTCC_NOCCACHE := $(HOSTCC)
 250 ifndef HOSTCXX
 251 HOSTCXX := g++
 252 HOSTCXX := $(shell which $(HOSTCXX) || type -p $(HOSTCXX) || echo g++)
 253 endif
 254 HOSTCXX_NOCCACHE := $(HOSTCXX)
 255 ifndef HOSTCPP
 256 HOSTCPP := cpp
 257 endif
 258 ifndef HOSTLD
 259 HOSTLD := ld
 260 endif
 261 ifndef HOSTLN
 262 HOSTLN := ln
 263 endif
 264 ifndef HOSTNM
 265 HOSTNM := nm
 266 endif
 267 ifndef HOSTOBJCOPY
 268 HOSTOBJCOPY := objcopy
 269 endif
 270 ifndef HOSTRANLIB
 271 HOSTRANLIB := ranlib
 272 endif
 273 HOSTAR := $(shell which $(HOSTAR) || type -p $(HOSTAR) || echo ar)
 274 HOSTAS := $(shell which $(HOSTAS) || type -p $(HOSTAS) || echo as)
 275 HOSTCPP := $(shell which $(HOSTCPP) || type -p $(HOSTCPP) || echo cpp)
 276 HOSTLD := $(shell which $(HOSTLD) || type -p $(HOSTLD) || echo ld)
 277 HOSTLN := $(shell which $(HOSTLN) || type -p $(HOSTLN) || echo ln)
 278 HOSTNM := $(shell which $(HOSTNM) || type -p $(HOSTNM) || echo nm)
 279 HOSTOBJCOPY := $(shell which $(HOSTOBJCOPY) || type -p $(HOSTOBJCOPY) || echo objcopy)
 280 HOSTRANLIB := $(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranlib)
 281
 282 export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
 283 export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
 284
 285 # Determine the userland we are running on.
 286 #
 287 # Note that, despite its name, we are not interested in the actual
 288 # architecture name. This is mostly used to determine whether some
 289 # of the binary tools (e.g. pre-built external toolchains) can run
 290 # on the current host. So we need to know if the userland we're
 291 # running on can actually run those toolchains.
 292 #
 293 # For example, a 64-bit prebuilt toolchain will not run on a 64-bit
 294 # kernel if the userland is 32-bit (e.g. in a chroot for example).
 295 #
 296 # So, we extract the first part of the tuple the host gcc was
 297 # configured to generate code for; we assume this is our userland.
 298 #
 299 export HOSTARCH := $(shell LC_ALL=C $(HOSTCC_NOCCACHE) -v 2>&1 | \
 300         sed -e '/^Target: \([^-]*\).*/!d' \
 301             -e 's//\1/' \
 302             -e 's/i.86/x86/' \
 303             -e 's/sun4u/sparc64/' \
 304             -e 's/arm.*/arm/' \
 305             -e 's/sa110/arm/' \
 306             -e 's/ppc64/powerpc64/' \
 307             -e 's/ppc/powerpc/' \
 308             -e 's/macppc/powerpc/' \
 309             -e 's/sh.*/sh/' )
 310
 311 HOSTCC_VERSION := $(shell $(HOSTCC_NOCCACHE) --version | \
 312         sed -n -r 's/^.* ([0-9]*)\.([0-9]*)\.([0-9]*)[ ]*.*/\1 \2/p')
 313
 314 # For gcc >= 5.x, we only need the major version.
 315 ifneq ($(firstword $(HOSTCC_VERSION)),4)
 316 HOSTCC_VERSION := $(firstword $(HOSTCC_VERSION))
 317 endif
 318
 319 # Make sure pkg-config doesn't look outside the buildroot tree
 320 HOST_PKG_CONFIG_PATH := $(PKG_CONFIG_PATH)
 321 unexport PKG_CONFIG_PATH
 322 unexport PKG_CONFIG_SYSROOT_DIR
 323 unexport PKG_CONFIG_LIBDIR
 324
 325 # Having DESTDIR set in the environment confuses the installation
 326 # steps of some packages.
 327 unexport DESTDIR
 328
 329 # Causes breakage with packages that needs host-ruby
 330 unexport RUBYOPT
 331
 332 include package/pkg-utils.mk
 333 include package/doc-asciidoc.mk
 334
 335 ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 336
 337 ################################################################################
 338 #
 339 # Hide troublesome environment variables from sub processes
 340 #
 341 ################################################################################
 342 unexport CROSS_COMPILE
 343 unexport ARCH
 344 unexport CC
 345 unexport LD
 346 unexport AR
 347 unexport CXX
 348 unexport CPP
 349 unexport RANLIB
 350 unexport CFLAGS
 351 unexport CXXFLAGS
 352 unexport GREP_OPTIONS
 353 unexport TAR_OPTIONS
 354 unexport CONFIG_SITE
 355 unexport QMAKESPEC
 356 unexport TERMINFO
 357 unexport MACHINE
 358 unexport O
 359
 360 GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)
 361
 362 PACKAGES :=
 363 PACKAGES_ALL :=
 364
 365 # silent mode requested?
 366 QUIET := $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),-q)
 367
 368 # Strip off the annoying quoting
 369 ARCH := $(call qstrip,$(BR2_ARCH))
 370
 371 KERNEL_ARCH := $(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 372         -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 373         -e s/arcle/arc/ \
 374         -e s/arceb/arc/ \
 375         -e s/arm.*/arm/ -e s/sa110/arm/ \
 376         -e s/aarch64.*/arm64/ \
 377         -e s/bfin/blackfin/ \
 378         -e s/parisc64/parisc/ \
 379         -e s/powerpc64.*/powerpc/ \
 380         -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 381         -e s/sh.*/sh/ \
 382         -e s/microblazeel/microblaze/)
 383
 384 ZCAT := $(call qstrip,$(BR2_ZCAT))
 385 BZCAT := $(call qstrip,$(BR2_BZCAT))
 386 XZCAT := $(call qstrip,$(BR2_XZCAT))
 387 TAR_OPTIONS = $(call qstrip,$(BR2_TAR_OPTIONS)) -xf
 388
 389 # packages compiled for the host go here
 390 HOST_DIR := $(call qstrip,$(BR2_HOST_DIR))
 391
 392 # Quotes are needed for spaces and all in the original PATH content.
 393 BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin:$(PATH)"
 394
 395 # Location of a file giving a big fat warning that output/target
 396 # should not be used as the root filesystem.
 397 TARGET_DIR_WARNING_FILE = $(TARGET_DIR)/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
 398
 399 ifeq ($(BR2_CCACHE),y)
 400 CCACHE := $(HOST_DIR)/usr/bin/ccache
 401 BR_CACHE_DIR ?= $(call qstrip,$(BR2_CCACHE_DIR))
 402 export BR_CACHE_DIR
 403 HOSTCC := $(CCACHE) $(HOSTCC)
 404 HOSTCXX := $(CCACHE) $(HOSTCXX)
 405 else
 406 export BR_NO_CCACHE
 407 endif
 408
 409 # Scripts in support/ or post-build scripts may need to reference
 410 # these locations, so export them so it is easier to use
 411 export BR2_CONFIG
 412 export BR2_REPRODUCIBLE
 413 export TARGET_DIR
 414 export STAGING_DIR
 415 export HOST_DIR
 416 export BINARIES_DIR
 417 export BASE_DIR
 418
 419 ################################################################################
 420 #
 421 # You should probably leave this stuff alone unless you know
 422 # what you are doing.
 423 #
 424 ################################################################################
 425
 426 all: world
 427
 428 # Include legacy before the other things, because package .mk files
 429 # may rely on it.
 430 include Makefile.legacy
 431
 432 include package/Makefile.in
 433 include support/dependencies/dependencies.mk
 434
 435 include toolchain/*.mk
 436 include toolchain/*/*.mk
 437
 438 # Include the package override file if one has been provided in the
 439 # configuration.
 440 PACKAGE_OVERRIDE_FILE = $(call qstrip,$(BR2_PACKAGE_OVERRIDE_FILE))
 441 ifneq ($(PACKAGE_OVERRIDE_FILE),)
 442 -include $(PACKAGE_OVERRIDE_FILE)
 443 endif
 444
 445 include $(sort $(wildcard package/*/*.mk))
 446
 447 include boot/common.mk
 448 include linux/linux.mk
 449 include fs/common.mk
 450
 451 # If using a br2-external tree, the BR2_EXTERNAL_$(NAME)_PATH variables
 452 # are also present in the .config file. Since .config is included after
 453 # we defined them in the Makefile, the values for those variables are
 454 # quoted. We just include the generated Makefile fragment .br2-external.mk
 455 # a third time, which will set those variables to the un-quoted values.
 456 include $(BR2_EXTERNAL_FILE)
 457
 458 # Nothing to include if no BR2_EXTERNAL tree in use
 459 include $(BR2_EXTERNAL_MKS)
 460
 461 # Now we are sure we have all the packages scanned and defined. We now
 462 # check for each package in the list of enabled packages, that all its
 463 # dependencies are indeed enabled.
 464 #
 465 # Only trigger the check for default builds. If the user forces building
 466 # a package, even if not enabled in the configuration, we want to accept
 467 # it.
 468 #
 469 ifeq ($(MAKECMDGOALS),)
 470
 471 define CHECK_ONE_DEPENDENCY
 472 ifeq ($$($(2)_TYPE),target)
 473 ifeq ($$($(2)_IS_VIRTUAL),)
 474 ifneq ($$($$($(2)_KCONFIG_VAR)),y)
 475 $$(error $$($(2)_NAME) is in the dependency chain of $$($(1)_NAME) that \
 476 has added it to its _DEPENDENCIES variable without selecting it or \
 477 depending on it from Config.in)
 478 endif
 479 endif
 480 endif
 481 endef
 482
 483 $(foreach pkg,$(call UPPERCASE,$(PACKAGES)),\
 484         $(foreach dep,$(call UPPERCASE,$($(pkg)_FINAL_ALL_DEPENDENCIES)),\
 485                 $(eval $(call CHECK_ONE_DEPENDENCY,$(pkg),$(dep))$(sep))))
 486
 487 endif
 488
 489 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 490         $(HOST_DIR) $(BINARIES_DIR)
 491
 492 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 493         $(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
 494
 495 prepare: $(BUILD_DIR)/buildroot-config/auto.conf
 496
 497 world: target-post-image
 498
 499 .PHONY: all world toolchain dirs clean distclean source outputmakefile \
 500         legal-info legal-info-prepare legal-info-clean printvars help \
 501         list-defconfigs target-finalize target-post-image source-check
 502
 503 # Populating the staging with the base directories is handled by the skeleton package
 504 $(STAGING_DIR):
 505         @mkdir -p $(STAGING_DIR)
 506         @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging
 507
 508 RSYNC_VCS_EXCLUSIONS = \
 509         --exclude .svn --exclude .git --exclude .hg --exclude .bzr \
 510         --exclude CVS
 511
 512 STRIP_FIND_CMD = find $(TARGET_DIR)
 513 ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
 514 STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
 515 endif
 516 STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
 517 # file exclusions:
 518 # - libpthread.so: a non-stripped libpthread shared library is needed for
 519 #   proper debugging of pthread programs using gdb.
 520 # - ld.so: a non-stripped dynamic linker library is needed for valgrind
 521 # - kernel modules (*.ko): do not function properly when stripped like normal
 522 #   applications and libraries. Normally kernel modules are already excluded
 523 #   by the executable permission check above, so the explicit exclusion is only
 524 #   done for kernel modules with incorrect permissions.
 525 STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* ld-*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
 526
 527 ifeq ($(BR2_ECLIPSE_REGISTER),y)
 528 define TOOLCHAIN_ECLIPSE_REGISTER
 529         ./support/scripts/eclipse-register-toolchain `readlink -f $(O)` \
 530                 $(notdir $(TARGET_CROSS)) $(BR2_ARCH)
 531 endef
 532 TARGET_FINALIZE_HOOKS += TOOLCHAIN_ECLIPSE_REGISTER
 533 endif
 534
 535 # Generate locale data. Basically, we call the localedef program
 536 # (built by the host-localedef package) for each locale. The input
 537 # data comes preferably from the toolchain, or if the toolchain does
 538 # not have them (Linaro toolchains), we use the ones available on the
 539 # host machine.
 540 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 541 GLIBC_GENERATE_LOCALES = $(call qstrip,$(BR2_GENERATE_LOCALE))
 542 ifneq ($(GLIBC_GENERATE_LOCALES),)
 543 PACKAGES += host-localedef
 544
 545 define GENERATE_GLIBC_LOCALES
 546         $(Q)mkdir -p $(TARGET_DIR)/usr/lib/locale/
 547         $(Q)for locale in $(GLIBC_GENERATE_LOCALES) ; do \
 548                 inputfile=`echo $${locale} | cut -f1 -d'.'` ; \
 549                 charmap=`echo $${locale} | cut -f2 -d'.' -s` ; \
 550                 if test -z "$${charmap}" ; then \
 551                         charmap="UTF-8" ; \
 552                 fi ; \
 553                 echo "Generating locale $${inputfile}.$${charmap}" ; \
 554                 I18NPATH=$(STAGING_DIR)/usr/share/i18n:/usr/share/i18n \
 555                 $(HOST_DIR)/usr/bin/localedef \
 556                         --prefix=$(TARGET_DIR) \
 557                         --$(call LOWERCASE,$(BR2_ENDIAN))-endian \
 558                         -i $${inputfile} -f $${charmap} \
 559                         $${locale} ; \
 560         done
 561 endef
 562 TARGET_FINALIZE_HOOKS += GENERATE_GLIBC_LOCALES
 563 endif
 564 endif
 565
 566 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 567 LOCALE_WHITELIST = $(BUILD_DIR)/locales.nopurge
 568 LOCALE_NOPURGE = $(call qstrip,$(BR2_ENABLE_LOCALE_WHITELIST))
 569
 570 # This piece of junk does the following:
 571 # First collect the whitelist in a file.
 572 # Then go over all the locale dirs and for each subdir, check if it exists
 573 # in the whitelist file. If it doesn't, kill it.
 574 # Finally, specifically for X11, regenerate locale.dir from the whitelist.
 575 define PURGE_LOCALES
 576         rm -f $(LOCALE_WHITELIST)
 577         for i in $(LOCALE_NOPURGE) locale-archive; do echo $$i >> $(LOCALE_WHITELIST); done
 578
 579         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/lib/locale)); \
 580         do \
 581                 for langdir in $$dir/*; \
 582                 do \
 583                         if [ -e "$${langdir}" ]; \
 584                         then \
 585                                 grep -qx "$${langdir##*/}" $(LOCALE_WHITELIST) || rm -rf $$langdir; \
 586                         fi \
 587                 done; \
 588         done
 589         if [ -d $(TARGET_DIR)/usr/share/X11/locale ]; \
 590         then \
 591                 for lang in $(LOCALE_NOPURGE); \
 592                 do \
 593                         if [ -f $(TARGET_DIR)/usr/share/X11/locale/$$lang/XLC_LOCALE ]; \
 594                         then \
 595                                 echo "$$lang/XLC_LOCALE: $$lang"; \
 596                         fi \
 597                 done > $(TARGET_DIR)/usr/share/X11/locale/locale.dir; \
 598         fi
 599 endef
 600 TARGET_FINALIZE_HOOKS += PURGE_LOCALES
 601 endif
 602
 603 $(TARGETS_ROOTFS): target-finalize
 604
 605 target-finalize: $(PACKAGES)
 606         @$(call MESSAGE,"Finalizing target directory")
 607         $(foreach hook,$(TARGET_FINALIZE_HOOKS),$($(hook))$(sep))
 608         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/share/aclocal \
 609                 $(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
 610                 $(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
 611         find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
 612         find $(TARGET_DIR)/lib $(TARGET_DIR)/usr/lib $(TARGET_DIR)/usr/libexec \
 613                 \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 614 ifneq ($(BR2_PACKAGE_GDB),y)
 615         rm -rf $(TARGET_DIR)/usr/share/gdb
 616 endif
 617 ifneq ($(BR2_PACKAGE_BASH),y)
 618         rm -rf $(TARGET_DIR)/usr/share/bash-completion
 619 endif
 620 ifneq ($(BR2_PACKAGE_ZSH),y)
 621         rm -rf $(TARGET_DIR)/usr/share/zsh
 622 endif
 623         rm -rf $(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/man
 624         rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
 625         rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
 626         rm -rf $(TARGET_DIR)/usr/share/gtk-doc
 627         -rmdir $(TARGET_DIR)/usr/share 2>/dev/null
 628         $(STRIP_FIND_CMD) | xargs -0 $(STRIPCMD) 2>/dev/null || true
 629
 630 # See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
 631 # besides the one in which crash occurred; or SIGTRAP kills my program when
 632 # I set a breakpoint"
 633 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 634         find $(TARGET_DIR)/lib -type f -name 'libpthread*.so*' | \
 635                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 636 endif
 637
 638 # Valgrind needs ld.so with enough information, so only strip
 639 # debugging symbols.
 640         find $(TARGET_DIR)/lib -type f -name 'ld-*.so*' | \
 641                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 642         test -f $(TARGET_DIR)/etc/ld.so.conf && \
 643                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf file"; exit 1; } || true
 644         test -d $(TARGET_DIR)/etc/ld.so.conf.d && \
 645                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf.d directory"; exit 1; } || true
 646         mkdir -p $(TARGET_DIR)/etc
 647         ( \
 648                 echo "NAME=Buildroot"; \
 649                 echo "VERSION=$(BR2_VERSION_FULL)"; \
 650                 echo "ID=buildroot"; \
 651                 echo "VERSION_ID=$(BR2_VERSION)"; \
 652                 echo "PRETTY_NAME=\"Buildroot $(BR2_VERSION)\"" \
 653         ) >  $(TARGET_DIR)/etc/os-release
 654
 655         @$(foreach d, $(call qstrip,$(BR2_ROOTFS_OVERLAY)), \
 656                 $(call MESSAGE,"Copying overlay $(d)"); \
 657                 rsync -a --ignore-times --keep-dirlinks $(RSYNC_VCS_EXCLUSIONS) \
 658                         --chmod=u=rwX,go=rX --exclude .empty --exclude '*~' \
 659                         $(d)/ $(TARGET_DIR)$(sep))
 660
 661         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 662                 $(call MESSAGE,"Executing post-build script $(s)"); \
 663                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 664
 665 target-post-image: $(TARGETS_ROOTFS) target-finalize
 666         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_IMAGE_SCRIPT)), \
 667                 $(call MESSAGE,"Executing post-image script $(s)"); \
 668                 $(EXTRA_ENV) $(s) $(BINARIES_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 669
 670 source: $(foreach p,$(PACKAGES),$(p)-all-source)
 671
 672 _external-deps: $(foreach p,$(PACKAGES),$(p)-all-external-deps)
 673 external-deps:
 674         @$(MAKE1) -Bs $(EXTRAMAKEARGS) _external-deps | sort -u
 675
 676 # check if download URLs are outdated
 677 source-check: $(foreach p,$(PACKAGES),$(p)-all-source-check)
 678
 679 legal-info-clean:
 680         @rm -fr $(LEGAL_INFO_DIR)
 681
 682 legal-info-prepare: $(LEGAL_INFO_DIR)
 683         @$(call MESSAGE,"Collecting legal info")
 684         @$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
 685         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,TARGET)
 686         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,HOST)
 687         @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,not saved,HOST)
 688         @$(call legal-warning,the Buildroot source code has not been saved)
 689         @cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
 690
 691 legal-info: dirs legal-info-clean legal-info-prepare $(foreach p,$(PACKAGES),$(p)-all-legal-info) \
 692                 $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST)
 693         @cat support/legal-info/README.header >>$(LEGAL_REPORT)
 694         @if [ -r $(LEGAL_WARNINGS) ]; then \
 695                 cat support/legal-info/README.warnings-header \
 696                         $(LEGAL_WARNINGS) >>$(LEGAL_REPORT); \
 697                 cat $(LEGAL_WARNINGS); fi
 698         @rm -f $(LEGAL_WARNINGS)
 699         @(cd $(LEGAL_INFO_DIR); \
 700                 find * -type f -exec sha256sum {} + | LC_ALL=C sort -k2 \
 701                         >.legal-info.sha256; \
 702                 mv .legal-info.sha256 legal-info.sha256)
 703         @echo "Legal info produced in $(LEGAL_INFO_DIR)"
 704
 705 show-targets:
 706         @echo $(PACKAGES) $(TARGETS_ROOTFS)
 707
 708 graph-build: $(O)/build/build-time.log
 709         @install -d $(GRAPHS_DIR)
 710         $(foreach o,name build duration,./support/scripts/graph-build-time \
 711                                         --type=histogram --order=$(o) --input=$(<) \
 712                                         --output=$(GRAPHS_DIR)/build.hist-$(o).$(BR_GRAPH_OUT) \
 713                                         $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 714         $(foreach t,packages steps,./support/scripts/graph-build-time \
 715                                    --type=pie-$(t) --input=$(<) \
 716                                    --output=$(GRAPHS_DIR)/build.pie-$(t).$(BR_GRAPH_OUT) \
 717                                    $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 718
 719 graph-depends-requirements:
 720         @dot -? >/dev/null 2>&1 || \
 721                 { echo "ERROR: The 'dot' program from Graphviz is needed for graph-depends" >&2; exit 1; }
 722
 723 graph-depends: graph-depends-requirements
 724         @$(INSTALL) -d $(GRAPHS_DIR)
 725         @cd "$(CONFIG_DIR)"; \
 726         $(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
 727                 -o $(GRAPHS_DIR)/$(@).dot
 728         dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
 729                 -o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
 730                 $(GRAPHS_DIR)/$(@).dot
 731
 732 graph-size:
 733         $(Q)mkdir -p $(GRAPHS_DIR)
 734         $(Q)$(TOPDIR)/support/scripts/size-stats --builddir $(BASE_DIR) \
 735                 --graph $(GRAPHS_DIR)/graph-size.$(BR_GRAPH_OUT) \
 736                 --file-size-csv $(GRAPHS_DIR)/file-size-stats.csv \
 737                 --package-size-csv $(GRAPHS_DIR)/package-size-stats.csv
 738
 739 check-dependencies:
 740         @cd "$(CONFIG_DIR)"; \
 741         $(TOPDIR)/support/scripts/graph-depends -C
 742
 743 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 744
 745 all: menuconfig
 746
 747 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 748
 749 # configuration
 750 # ---------------------------------------------------------------------------
 751
 752 HOSTCFLAGS = $(CFLAGS_FOR_BUILD)
 753 export HOSTCFLAGS
 754
 755 .PHONY: prepare-kconfig
 756 prepare-kconfig: outputmakefile $(BUILD_DIR)/.br2-external.in
 757
 758 $(BUILD_DIR)/buildroot-config/%onf:
 759         mkdir -p $(@D)/lxdialog
 760         PKG_CONFIG_PATH="$(HOST_PKG_CONFIG_PATH)" $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" \
 761             obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
 762
 763 DEFCONFIG = $(call qstrip,$(BR2_DEFCONFIG))
 764
 765 # We don't want to fully expand BR2_DEFCONFIG here, so Kconfig will
 766 # recognize that if it's still at its default $(CONFIG_DIR)/defconfig
 767 COMMON_CONFIG_ENV = \
 768         BR2_DEFCONFIG='$(call qstrip,$(value BR2_DEFCONFIG))' \
 769         KCONFIG_AUTOCONFIG=$(BUILD_DIR)/buildroot-config/auto.conf \
 770         KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
 771         KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
 772         BR2_CONFIG=$(BR2_CONFIG) \
 773         HOST_GCC_VERSION="$(HOSTCC_VERSION)" \
 774         BUILD_DIR=$(BUILD_DIR) \
 775         SKIP_LEGACY=
 776
 777 xconfig: $(BUILD_DIR)/buildroot-config/qconf prepare-kconfig
 778         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 779
 780 gconfig: $(BUILD_DIR)/buildroot-config/gconf prepare-kconfig
 781         @$(COMMON_CONFIG_ENV) srctree=$(TOPDIR) $< $(CONFIG_CONFIG_IN)
 782
 783 menuconfig: $(BUILD_DIR)/buildroot-config/mconf prepare-kconfig
 784         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 785
 786 nconfig: $(BUILD_DIR)/buildroot-config/nconf prepare-kconfig
 787         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 788
 789 config: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 790         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 791
 792 # For the config targets that automatically select options, we pass
 793 # SKIP_LEGACY=y to disable the legacy options. However, in that case
 794 # no values are set for the legacy options so a subsequent oldconfig
 795 # will query them. Therefore, run an additional olddefconfig.
 796
 797 oldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 798         @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)
 799
 800 randconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 801         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --randconfig $(CONFIG_CONFIG_IN)
 802         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 803
 804 allyesconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 805         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allyesconfig $(CONFIG_CONFIG_IN)
 806         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 807
 808 allnoconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 809         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allnoconfig $(CONFIG_CONFIG_IN)
 810         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 811
 812 randpackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 813         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 814         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 815                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 816                 $< --randconfig $(CONFIG_CONFIG_IN)
 817         @rm -f $(CONFIG_DIR)/.config.nopkg
 818         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 819
 820 allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 821         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 822         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 823                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 824                 $< --allyesconfig $(CONFIG_CONFIG_IN)
 825         @rm -f $(CONFIG_DIR)/.config.nopkg
 826         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 827
 828 allnopackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 829         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 830         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 831                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 832                 $< --allnoconfig $(CONFIG_CONFIG_IN)
 833         @rm -f $(CONFIG_DIR)/.config.nopkg
 834         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 835
 836 silentoldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 837         $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
 838
 839 olddefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 840         $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
 841
 842 defconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 843         @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
 844
 845 define percent_defconfig
 846 # Override the BR2_DEFCONFIG from COMMON_CONFIG_ENV with the new defconfig
 847 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(1)/configs/%_defconfig prepare-kconfig
 848         @$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
 849                 $$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
 850 endef
 851 $(eval $(foreach d,$(call reverse,$(TOPDIR) $(BR2_EXTERNAL_DIRS)),$(call percent_defconfig,$(d))$(sep)))
 852
 853 savedefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 854         @$(COMMON_CONFIG_ENV) $< \
 855                 --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
 856                 $(CONFIG_CONFIG_IN)
 857         @$(SED) '/BR2_DEFCONFIG=/d' $(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig)
 858
 859 .PHONY: defconfig savedefconfig
 860
 861 ################################################################################
 862 #
 863 # Cleanup and misc junk
 864 #
 865 ################################################################################
 866
 867 # outputmakefile generates a Makefile in the output directory, if using a
 868 # separate output directory. This allows convenient use of make in the
 869 # output directory.
 870 outputmakefile:
 871 ifeq ($(NEED_WRAPPER),y)
 872         $(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
 873 endif
 874
 875 # Even though the target is a real file, we mark it as PHONY as we
 876 # want it to be re-generated each time make is invoked, in case the
 877 # value of BR2_EXTERNAL is changed.
 878 .PHONY: $(BUILD_DIR)/.br2-external.in
 879 $(BUILD_DIR)/.br2-external.in: $(BUILD_DIR)
 880         $(Q)support/scripts/br2-external -k -o "$(@)" $(BR2_EXTERNAL)
 881
 882 # printvars prints all the variables currently defined in our
 883 # Makefiles. Alternatively, if a non-empty VARS variable is passed,
 884 # only the variables matching the make pattern passed in VARS are
 885 # displayed.
 886 printvars:
 887         @$(foreach V, \
 888                 $(sort $(if $(VARS),$(filter $(VARS),$(.VARIABLES)),$(.VARIABLES))), \
 889                 $(if $(filter-out environment% default automatic, \
 890                                 $(origin $V)), \
 891                 $(info $V=$($V) ($(value $V)))))
 892
 893 clean:
 894         rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
 895                 $(BUILD_DIR) $(BASE_DIR)/staging \
 896                 $(LEGAL_INFO_DIR) $(GRAPHS_DIR)
 897
 898 distclean: clean
 899 ifeq ($(O),output)
 900         rm -rf $(O)
 901 endif
 902         rm -rf $(TOPDIR)/dl $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
 903                 $(CONFIG_DIR)/.auto.deps $(BR2_EXTERNAL_FILE)
 904
 905 help:
 906         @echo 'Cleaning:'
 907         @echo '  clean                  - delete all files created by build'
 908         @echo '  distclean              - delete all non-source files (including .config)'
 909         @echo
 910         @echo 'Build:'
 911         @echo '  all                    - make world'
 912         @echo '  toolchain              - build toolchain'
 913         @echo
 914         @echo 'Configuration:'
 915         @echo '  menuconfig             - interactive curses-based configurator'
 916         @echo '  nconfig                - interactive ncurses-based configurator'
 917         @echo '  xconfig                - interactive Qt-based configurator'
 918         @echo '  gconfig                - interactive GTK-based configurator'
 919         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 920         @echo '  silentoldconfig        - Same as oldconfig, but quietly, additionally update deps'
 921         @echo '  olddefconfig           - Same as silentoldconfig but sets new symbols to their default value'
 922         @echo '  randconfig             - New config with random answer to all options'
 923         @echo '  defconfig              - New config with default answer to all options'
 924         @echo '                             BR2_DEFCONFIG, if set, is used as input'
 925         @echo '  savedefconfig          - Save current config to BR2_DEFCONFIG (minimal config)'
 926         @echo '  allyesconfig           - New config where all options are accepted with yes'
 927         @echo '  allnoconfig            - New config where all options are answered with no'
 928         @echo '  randpackageconfig      - New config with random answer to package options'
 929         @echo '  allyespackageconfig    - New config where pkg options are accepted with yes'
 930         @echo '  allnopackageconfig     - New config where package options are answered with no'
 931         @echo
 932         @echo 'Package-specific:'
 933         @echo '  <pkg>                  - Build and install <pkg> and all its dependencies'
 934         @echo '  <pkg>-source           - Only download the source files for <pkg>'
 935         @echo '  <pkg>-extract          - Extract <pkg> sources'
 936         @echo '  <pkg>-patch            - Apply patches to <pkg>'
 937         @echo '  <pkg>-depends          - Build <pkg>'\''s dependencies'
 938         @echo '  <pkg>-configure        - Build <pkg> up to the configure step'
 939         @echo '  <pkg>-build            - Build <pkg> up to the build step'
 940         @echo '  <pkg>-graph-depends    - Generate a graph of <pkg>'\''s dependencies'
 941         @echo '  <pkg>-dirclean         - Remove <pkg> build directory'
 942         @echo '  <pkg>-reconfigure      - Restart the build from the configure step'
 943         @echo '  <pkg>-rebuild          - Restart the build from the build step'
 944         $(foreach p,$(HELP_PACKAGES), \
 945                 @echo $(sep) \
 946                 @echo '$($(p)_NAME):' $(sep) \
 947                 $($(p)_HELP_CMDS)$(sep))
 948         @echo
 949         @echo 'Documentation:'
 950         @echo '  manual                 - build manual in all formats'
 951         @echo '  manual-html            - build manual in HTML'
 952         @echo '  manual-split-html      - build manual in split HTML'
 953         @echo '  manual-pdf             - build manual in PDF'
 954         @echo '  manual-text            - build manual in text'
 955         @echo '  manual-epub            - build manual in ePub'
 956         @echo '  graph-build            - generate graphs of the build times'
 957         @echo '  graph-depends          - generate graph of the dependency tree'
 958         @echo '  graph-size             - generate stats of the filesystem size'
 959         @echo '  list-defconfigs        - list all defconfigs (pre-configured minimal systems)'
 960         @echo
 961         @echo 'Miscellaneous:'
 962         @echo '  source                 - download all sources needed for offline-build'
 963         @echo '  source-check           - check selected packages for valid download URLs'
 964         @echo '  external-deps          - list external packages used'
 965         @echo '  legal-info             - generate info about license compliance'
 966         @echo
 967         @echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
 968         @echo '  make O=dir             - Locate all output files in "dir", including .config'
 969         @echo
 970         @echo 'For further details, see README, generate the Buildroot manual, or consult'
 971         @echo 'it on-line at http://buildroot.org/docs.html'
 972         @echo
 973
 974 # List the defconfig files
 975 # $(1): base directory
 976 # $(2): br2-external name, empty for bundled
 977 define list-defconfigs
 978         @first=true; \
 979         for defconfig in $(1)/configs/*_defconfig; do \
 980                 [ -f "$${defconfig}" ] || continue; \
 981                 if $${first}; then \
 982                         if [ "$(2)" ]; then \
 983                                 printf 'External configs in "$(call qstrip,$(2))":\n'; \
 984                         else \
 985                                 printf "Built-in configs:\n"; \
 986                         fi; \
 987                         first=false; \
 988                 fi; \
 989                 defconfig="$${defconfig##*/}"; \
 990                 printf "  %-35s - Build for %s\n" "$${defconfig}" "$${defconfig%_defconfig}"; \
 991         done; \
 992         $${first} || printf "\n"
 993 endef
 994
 995 # We iterate over BR2_EXTERNAL_NAMES rather than BR2_EXTERNAL_DIRS,
 996 # because we want to display the name of the br2-external tree.
 997 list-defconfigs:
 998         $(call list-defconfigs,$(TOPDIR))
 999         $(foreach name,$(BR2_EXTERNAL_NAMES),\
1000                 $(call list-defconfigs,$(BR2_EXTERNAL_$(name)_PATH),\
1001                         $(BR2_EXTERNAL_$(name)_DESC))$(sep))
1002
1003 release: OUT = buildroot-$(BR2_VERSION)
1004
1005 # Create release tarballs. We need to fiddle a bit to add the generated
1006 # documentation to the git output
1007 release:
1008         git archive --format=tar --prefix=$(OUT)/ HEAD > $(OUT).tar
1009         $(MAKE) O=$(OUT) manual-html manual-text manual-pdf
1010         $(MAKE) O=$(OUT) manual-clean
1011         tar rf $(OUT).tar $(OUT)
1012         gzip -9 -c < $(OUT).tar > $(OUT).tar.gz
1013         bzip2 -9 -c < $(OUT).tar > $(OUT).tar.bz2
1014         rm -rf $(OUT) $(OUT).tar
1015
1016 print-version:
1017         @echo $(BR2_VERSION_FULL)
1018
1019 include docs/manual/manual.mk
1020 -include $(foreach dir,$(BR2_EXTERNAL_DIRS),$(dir)/docs/*/*.mk)
1021
1022 .PHONY: $(noconfig_targets)
1023
1024 endif #umask