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) 2014-2017 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 # Delete default rules. We don't use them. This saves a bit of time.
  28 .SUFFIXES:
  29
  30 # we want bash as shell
  31 SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  32          else if [ -x /bin/bash ]; then echo /bin/bash; \
  33          else echo sh; fi; fi)
  34
  35 # Set O variable if not already done on the command line;
  36 # or avoid confusing packages that can use the O=<dir> syntax for out-of-tree
  37 # build by preventing it from being forwarded to sub-make calls.
  38 ifneq ("$(origin O)", "command line")
  39 O := $(CURDIR)/output
  40 endif
  41
  42 # Check if the current Buildroot execution meets all the pre-requisites.
  43 # If they are not met, Buildroot will actually do its job in a sub-make meeting
  44 # its pre-requisites, which are:
  45 #  1- Permissive enough umask:
  46 #       Wrong or too restrictive umask will prevent Buildroot and packages from
  47 #       creating files and directories.
  48 #  2- Absolute canonical CWD (i.e. $(CURDIR)):
  49 #       Otherwise, some packages will use CWD as-is, others will compute its
  50 #       absolute canonical path. This makes harder tracking and fixing host
  51 #       machine path leaks.
  52 #  3- Absolute canonical output location (i.e. $(O)):
  53 #       For the same reason as the one for CWD.
  54
  55 # Remove the trailing '/.' from $(O) as it can be added by the makefile wrapper
  56 # installed in the $(O) directory.
  57 # Also remove the trailing '/' the user can set when on the command line.
  58 override O := $(patsubst %/,%,$(patsubst %.,%,$(O)))
  59 # Make sure $(O) actually exists before calling realpath on it; this is to
  60 # avoid empty CANONICAL_O in case on non-existing entry.
  61 CANONICAL_O := $(shell mkdir -p $(O) >/dev/null 2>&1)$(realpath $(O))
  62
  63 CANONICAL_CURDIR = $(realpath $(CURDIR))
  64
  65 REQ_UMASK = 0022
  66
  67 # Make sure O= is passed (with its absolute canonical path) everywhere the
  68 # toplevel makefile is called back.
  69 EXTRAMAKEARGS := O=$(CANONICAL_O)
  70
  71 # Check Buildroot execution pre-requisites here.
  72 ifneq ($(shell umask):$(CURDIR):$(O),$(REQ_UMASK):$(CANONICAL_CURDIR):$(CANONICAL_O))
  73 .PHONY: _all $(MAKECMDGOALS)
  74
  75 $(MAKECMDGOALS): _all
  76         @:
  77
  78 _all:
  79         @umask $(REQ_UMASK) && \
  80                 $(MAKE) -C $(CANONICAL_CURDIR) --no-print-directory \
  81                         $(MAKECMDGOALS) $(EXTRAMAKEARGS)
  82
  83 else # umask / $(CURDIR) / $(O)
  84
  85 # This is our default rule, so must come first
  86 all:
  87
  88 # Set and export the version string
  89 export BR2_VERSION := 2017.02-git
  90 # Actual time the release is cut (for reproducible builds)
  91 BR2_VERSION_EPOCH = 1478206447
  92
  93 # Save running make version since it's clobbered by the make package
  94 RUNNING_MAKE_VERSION := $(MAKE_VERSION)
  95
  96 # Check for minimal make version (note: this check will break at make 10.x)
  97 MIN_MAKE_VERSION = 3.81
  98 ifneq ($(firstword $(sort $(RUNNING_MAKE_VERSION) $(MIN_MAKE_VERSION))),$(MIN_MAKE_VERSION))
  99 $(error You have make '$(RUNNING_MAKE_VERSION)' installed. GNU make >= $(MIN_MAKE_VERSION) is required)
 100 endif
 101
 102 # Parallel execution of this Makefile is disabled because it changes
 103 # the packages building order, that can be a problem for two reasons:
 104 # - If a package has an unspecified optional dependency and that
 105 #   dependency is present when the package is built, it is used,
 106 #   otherwise it isn't (but compilation happily proceeds) so the end
 107 #   result will differ if the order is swapped due to parallel
 108 #   building.
 109 # - Also changing the building order can be a problem if two packages
 110 #   manipulate the same file in the target directory.
 111 #
 112 # Taking into account the above considerations, if you still want to execute
 113 # this top-level Makefile in parallel comment the ".NOTPARALLEL" line and
 114 # use the -j<jobs> option when building, e.g:
 115 #      make -j$((`getconf _NPROCESSORS_ONLN`+1))
 116 .NOTPARALLEL:
 117
 118 # absolute path
 119 TOPDIR := $(CURDIR)
 120 CONFIG_CONFIG_IN = Config.in
 121 CONFIG = support/kconfig
 122 DATE := $(shell date +%Y%m%d)
 123
 124 # Compute the full local version string so packages can use it as-is
 125 # Need to export it, so it can be got from environment in children (eg. mconf)
 126 export BR2_VERSION_FULL := $(BR2_VERSION)$(shell $(TOPDIR)/support/scripts/setlocalversion)
 127
 128 noconfig_targets := menuconfig nconfig gconfig xconfig config oldconfig randconfig \
 129         defconfig %_defconfig allyesconfig allnoconfig silentoldconfig release \
 130         randpackageconfig allyespackageconfig allnopackageconfig \
 131         print-version olddefconfig distclean manual manual-html manual-split-html \
 132         manual-pdf manual-text manual-epub
 133
 134 # Some global targets do not trigger a build, but are used to collect
 135 # metadata, or do various checks. When such targets are triggered,
 136 # some packages should not do their configuration sanity
 137 # checks. Provide them a BR_BUILDING variable set to 'y' when we're
 138 # actually building and they should do their sanity checks.
 139 #
 140 # We're building in two situations: when MAKECMDGOALS is empty
 141 # (default target is to build), or when MAKECMDGOALS contains
 142 # something else than one of the nobuild_targets.
 143 nobuild_targets := source %-source source-check \
 144         legal-info %-legal-info external-deps _external-deps \
 145         clean distclean help show-targets graph-depends \
 146         %-graph-depends %-show-depends %-show-version \
 147         graph-build graph-size list-defconfigs \
 148         savedefconfig printvars
 149 ifeq ($(MAKECMDGOALS),)
 150 BR_BUILDING = y
 151 else ifneq ($(filter-out $(nobuild_targets),$(MAKECMDGOALS)),)
 152 BR_BUILDING = y
 153 endif
 154
 155 # We call make recursively to build packages. The command-line overrides that
 156 # are passed to Buildroot don't apply to those package build systems. In
 157 # particular, we don't want to pass down the O=<dir> option for out-of-tree
 158 # builds, because the value specified on the command line will not be correct
 159 # for packages.
 160 MAKEOVERRIDES :=
 161
 162 # Include some helper macros and variables
 163 include support/misc/utils.mk
 164
 165 # Set variables related to in-tree or out-of-tree build.
 166 # Here, both $(O) and $(CURDIR) are absolute canonical paths.
 167 ifeq ($(O),$(CURDIR)/output)
 168 CONFIG_DIR := $(CURDIR)
 169 NEED_WRAPPER =
 170 else
 171 CONFIG_DIR := $(O)
 172 NEED_WRAPPER = y
 173 endif
 174
 175 # bash prints the name of the directory on 'cd <dir>' if CDPATH is
 176 # set, so unset it here to not cause problems. Notice that the export
 177 # line doesn't affect the environment of $(shell ..) calls.
 178 export CDPATH :=
 179
 180 BASE_DIR := $(CANONICAL_O)
 181 $(if $(BASE_DIR),, $(error output directory "$(O)" does not exist))
 182
 183
 184 # Handling of BR2_EXTERNAL.
 185 #
 186 # The value of BR2_EXTERNAL is stored in .br-external in the output directory.
 187 # The location of the external.mk makefile fragments is computed in that file.
 188 # On subsequent invocations of make, this file is read in. BR2_EXTERNAL can
 189 # still be overridden on the command line, therefore the file is re-created
 190 # every time make is run.
 191
 192 BR2_EXTERNAL_FILE = $(BASE_DIR)/.br-external.mk
 193 -include $(BR2_EXTERNAL_FILE)
 194 $(shell support/scripts/br2-external \
 195         -m -o '$(BR2_EXTERNAL_FILE)' $(BR2_EXTERNAL))
 196 BR2_EXTERNAL_ERROR =
 197 include $(BR2_EXTERNAL_FILE)
 198 ifneq ($(BR2_EXTERNAL_ERROR),)
 199 $(error $(BR2_EXTERNAL_ERROR))
 200 endif
 201
 202 # To make sure that the environment variable overrides the .config option,
 203 # set this before including .config.
 204 ifneq ($(BR2_DL_DIR),)
 205 DL_DIR := $(BR2_DL_DIR)
 206 endif
 207 ifneq ($(BR2_CCACHE_DIR),)
 208 BR_CACHE_DIR := $(BR2_CCACHE_DIR)
 209 endif
 210
 211 # Need that early, before we scan packages
 212 # Avoids doing the $(or...) everytime
 213 BR_GRAPH_OUT := $(or $(BR2_GRAPH_OUT),pdf)
 214
 215 BUILD_DIR := $(BASE_DIR)/build
 216 BINARIES_DIR := $(BASE_DIR)/images
 217 TARGET_DIR := $(BASE_DIR)/target
 218 # initial definition so that 'make clean' works for most users, even without
 219 # .config. HOST_DIR will be overwritten later when .config is included.
 220 HOST_DIR := $(BASE_DIR)/host
 221 GRAPHS_DIR := $(BASE_DIR)/graphs
 222
 223 LEGAL_INFO_DIR = $(BASE_DIR)/legal-info
 224 REDIST_SOURCES_DIR_TARGET = $(LEGAL_INFO_DIR)/sources
 225 REDIST_SOURCES_DIR_HOST = $(LEGAL_INFO_DIR)/host-sources
 226 LICENSE_FILES_DIR_TARGET = $(LEGAL_INFO_DIR)/licenses
 227 LICENSE_FILES_DIR_HOST = $(LEGAL_INFO_DIR)/host-licenses
 228 LEGAL_MANIFEST_CSV_TARGET = $(LEGAL_INFO_DIR)/manifest.csv
 229 LEGAL_MANIFEST_CSV_HOST = $(LEGAL_INFO_DIR)/host-manifest.csv
 230 LEGAL_WARNINGS = $(LEGAL_INFO_DIR)/.warnings
 231 LEGAL_REPORT = $(LEGAL_INFO_DIR)/README
 232
 233 ################################################################################
 234 #
 235 # staging and target directories do NOT list these as
 236 # dependencies anywhere else
 237 #
 238 ################################################################################
 239 $(BUILD_DIR) $(TARGET_DIR) $(HOST_DIR) $(BINARIES_DIR) $(LEGAL_INFO_DIR) $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST):
 240         @mkdir -p $@
 241
 242 BR2_CONFIG = $(CONFIG_DIR)/.config
 243
 244 # Pull in the user's configuration file
 245 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
 246 -include $(BR2_CONFIG)
 247 endif
 248
 249 # timezone and locale may affect build output
 250 ifeq ($(BR2_REPRODUCIBLE),y)
 251 export TZ = UTC
 252 export LANG = C
 253 export LC_ALL = C
 254 export GZIP = -n
 255 BR2_VERSION_GIT_EPOCH = $(shell GIT_DIR=$(TOPDIR)/.git $(GIT) log -1 --format=%at)
 256 export SOURCE_DATE_EPOCH = $(if $(wildcard $(TOPDIR)/.git),$(BR2_VERSION_GIT_EPOCH),$(BR2_VERSION_EPOCH))
 257 DEPENDENCIES_HOST_PREREQ += host-fakedate
 258 endif
 259
 260 # To put more focus on warnings, be less verbose as default
 261 # Use 'make V=1' to see the full commands
 262 ifeq ("$(origin V)", "command line")
 263   KBUILD_VERBOSE = $(V)
 264 endif
 265 ifndef KBUILD_VERBOSE
 266   KBUILD_VERBOSE = 0
 267 endif
 268
 269 ifeq ($(KBUILD_VERBOSE),1)
 270   Q =
 271 ifndef VERBOSE
 272   VERBOSE = 1
 273 endif
 274 export VERBOSE
 275 else
 276   Q = @
 277 endif
 278
 279 # kconfig uses CONFIG_SHELL
 280 CONFIG_SHELL := $(SHELL)
 281
 282 export SHELL CONFIG_SHELL Q KBUILD_VERBOSE
 283
 284 ifndef HOSTAR
 285 HOSTAR := ar
 286 endif
 287 ifndef HOSTAS
 288 HOSTAS := as
 289 endif
 290 ifndef HOSTCC
 291 HOSTCC := gcc
 292 HOSTCC := $(shell which $(HOSTCC) || type -p $(HOSTCC) || echo gcc)
 293 endif
 294 HOSTCC_NOCCACHE := $(HOSTCC)
 295 ifndef HOSTCXX
 296 HOSTCXX := g++
 297 HOSTCXX := $(shell which $(HOSTCXX) || type -p $(HOSTCXX) || echo g++)
 298 endif
 299 HOSTCXX_NOCCACHE := $(HOSTCXX)
 300 ifndef HOSTCPP
 301 HOSTCPP := cpp
 302 endif
 303 ifndef HOSTLD
 304 HOSTLD := ld
 305 endif
 306 ifndef HOSTLN
 307 HOSTLN := ln
 308 endif
 309 ifndef HOSTNM
 310 HOSTNM := nm
 311 endif
 312 ifndef HOSTOBJCOPY
 313 HOSTOBJCOPY := objcopy
 314 endif
 315 ifndef HOSTRANLIB
 316 HOSTRANLIB := ranlib
 317 endif
 318 HOSTAR := $(shell which $(HOSTAR) || type -p $(HOSTAR) || echo ar)
 319 HOSTAS := $(shell which $(HOSTAS) || type -p $(HOSTAS) || echo as)
 320 HOSTCPP := $(shell which $(HOSTCPP) || type -p $(HOSTCPP) || echo cpp)
 321 HOSTLD := $(shell which $(HOSTLD) || type -p $(HOSTLD) || echo ld)
 322 HOSTLN := $(shell which $(HOSTLN) || type -p $(HOSTLN) || echo ln)
 323 HOSTNM := $(shell which $(HOSTNM) || type -p $(HOSTNM) || echo nm)
 324 HOSTOBJCOPY := $(shell which $(HOSTOBJCOPY) || type -p $(HOSTOBJCOPY) || echo objcopy)
 325 HOSTRANLIB := $(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranlib)
 326 SED := $(shell which sed || type -p sed) -i -e
 327
 328 export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
 329 export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
 330
 331 # Determine the userland we are running on.
 332 #
 333 # Note that, despite its name, we are not interested in the actual
 334 # architecture name. This is mostly used to determine whether some
 335 # of the binary tools (e.g. pre-built external toolchains) can run
 336 # on the current host. So we need to know if the userland we're
 337 # running on can actually run those toolchains.
 338 #
 339 # For example, a 64-bit prebuilt toolchain will not run on a 64-bit
 340 # kernel if the userland is 32-bit (e.g. in a chroot for example).
 341 #
 342 # So, we extract the first part of the tuple the host gcc was
 343 # configured to generate code for; we assume this is our userland.
 344 #
 345 export HOSTARCH := $(shell LC_ALL=C $(HOSTCC_NOCCACHE) -v 2>&1 | \
 346         sed -e '/^Target: \([^-]*\).*/!d' \
 347             -e 's//\1/' \
 348             -e 's/i.86/x86/' \
 349             -e 's/sun4u/sparc64/' \
 350             -e 's/arm.*/arm/' \
 351             -e 's/sa110/arm/' \
 352             -e 's/ppc64/powerpc64/' \
 353             -e 's/ppc/powerpc/' \
 354             -e 's/macppc/powerpc/' \
 355             -e 's/sh.*/sh/' )
 356
 357 HOSTCC_VERSION := $(shell $(HOSTCC_NOCCACHE) --version | \
 358         sed -n -r 's/^.* ([0-9]*)\.([0-9]*)\.([0-9]*)[ ]*.*/\1 \2/p')
 359
 360 # For gcc >= 5.x, we only need the major version.
 361 ifneq ($(firstword $(HOSTCC_VERSION)),4)
 362 HOSTCC_VERSION := $(firstword $(HOSTCC_VERSION))
 363 endif
 364
 365 # Make sure pkg-config doesn't look outside the buildroot tree
 366 HOST_PKG_CONFIG_PATH := $(PKG_CONFIG_PATH)
 367 unexport PKG_CONFIG_PATH
 368 unexport PKG_CONFIG_SYSROOT_DIR
 369 unexport PKG_CONFIG_LIBDIR
 370
 371 # Having DESTDIR set in the environment confuses the installation
 372 # steps of some packages.
 373 unexport DESTDIR
 374
 375 # Causes breakage with packages that needs host-ruby
 376 unexport RUBYOPT
 377
 378 include package/pkg-utils.mk
 379 include package/doc-asciidoc.mk
 380
 381 ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 382
 383 ################################################################################
 384 #
 385 # Hide troublesome environment variables from sub processes
 386 #
 387 ################################################################################
 388 unexport CROSS_COMPILE
 389 unexport ARCH
 390 unexport CC
 391 unexport LD
 392 unexport AR
 393 unexport CXX
 394 unexport CPP
 395 unexport RANLIB
 396 unexport CFLAGS
 397 unexport CXXFLAGS
 398 unexport GREP_OPTIONS
 399 unexport TAR_OPTIONS
 400 unexport CONFIG_SITE
 401 unexport QMAKESPEC
 402 unexport TERMINFO
 403 unexport MACHINE
 404 unexport O
 405
 406 GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)
 407
 408 PACKAGES :=
 409 PACKAGES_ALL :=
 410
 411 # silent mode requested?
 412 QUIET := $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),-q)
 413
 414 # Strip off the annoying quoting
 415 ARCH := $(call qstrip,$(BR2_ARCH))
 416
 417 KERNEL_ARCH := $(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 418         -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 419         -e s/arcle/arc/ \
 420         -e s/arceb/arc/ \
 421         -e s/arm.*/arm/ -e s/sa110/arm/ \
 422         -e s/aarch64.*/arm64/ \
 423         -e s/bfin/blackfin/ \
 424         -e s/or1k/openrisc/ \
 425         -e s/parisc64/parisc/ \
 426         -e s/powerpc64.*/powerpc/ \
 427         -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 428         -e s/sh.*/sh/ \
 429         -e s/microblazeel/microblaze/)
 430
 431 ZCAT := $(call qstrip,$(BR2_ZCAT))
 432 BZCAT := $(call qstrip,$(BR2_BZCAT))
 433 XZCAT := $(call qstrip,$(BR2_XZCAT))
 434 TAR_OPTIONS = $(call qstrip,$(BR2_TAR_OPTIONS)) -xf
 435
 436 # packages compiled for the host go here
 437 HOST_DIR := $(call qstrip,$(BR2_HOST_DIR))
 438
 439 # Quotes are needed for spaces and all in the original PATH content.
 440 BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin:$(PATH)"
 441
 442 # Location of a file giving a big fat warning that output/target
 443 # should not be used as the root filesystem.
 444 TARGET_DIR_WARNING_FILE = $(TARGET_DIR)/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
 445
 446 ifeq ($(BR2_CCACHE),y)
 447 CCACHE := $(HOST_DIR)/usr/bin/ccache
 448 BR_CACHE_DIR ?= $(call qstrip,$(BR2_CCACHE_DIR))
 449 export BR_CACHE_DIR
 450 HOSTCC := $(CCACHE) $(HOSTCC)
 451 HOSTCXX := $(CCACHE) $(HOSTCXX)
 452 else
 453 export BR_NO_CCACHE
 454 endif
 455
 456 # Scripts in support/ or post-build scripts may need to reference
 457 # these locations, so export them so it is easier to use
 458 export BR2_CONFIG
 459 export BR2_REPRODUCIBLE
 460 export TARGET_DIR
 461 export STAGING_DIR
 462 export HOST_DIR
 463 export BINARIES_DIR
 464 export BASE_DIR
 465
 466 ################################################################################
 467 #
 468 # You should probably leave this stuff alone unless you know
 469 # what you are doing.
 470 #
 471 ################################################################################
 472
 473 all: world
 474
 475 # Include legacy before the other things, because package .mk files
 476 # may rely on it.
 477 include Makefile.legacy
 478
 479 include package/Makefile.in
 480 include support/dependencies/dependencies.mk
 481
 482 include toolchain/*.mk
 483 include toolchain/*/*.mk
 484
 485 # Include the package override file if one has been provided in the
 486 # configuration.
 487 PACKAGE_OVERRIDE_FILE = $(call qstrip,$(BR2_PACKAGE_OVERRIDE_FILE))
 488 ifneq ($(PACKAGE_OVERRIDE_FILE),)
 489 -include $(PACKAGE_OVERRIDE_FILE)
 490 endif
 491
 492 include $(sort $(wildcard package/*/*.mk))
 493
 494 include boot/common.mk
 495 include linux/linux.mk
 496 include fs/common.mk
 497
 498 # If using a br2-external tree, the BR2_EXTERNAL_$(NAME)_PATH variables
 499 # are also present in the .config file. Since .config is included after
 500 # we defined them in the Makefile, the values for those variables are
 501 # quoted. We just include the generated Makefile fragment .br2-external.mk
 502 # a third time, which will set those variables to the un-quoted values.
 503 include $(BR2_EXTERNAL_FILE)
 504
 505 # Nothing to include if no BR2_EXTERNAL tree in use
 506 include $(BR2_EXTERNAL_MKS)
 507
 508 # Now we are sure we have all the packages scanned and defined. We now
 509 # check for each package in the list of enabled packages, that all its
 510 # dependencies are indeed enabled.
 511 #
 512 # Only trigger the check for default builds. If the user forces building
 513 # a package, even if not enabled in the configuration, we want to accept
 514 # it.
 515 #
 516 ifeq ($(MAKECMDGOALS),)
 517
 518 define CHECK_ONE_DEPENDENCY
 519 ifeq ($$($(2)_TYPE),target)
 520 ifeq ($$($(2)_IS_VIRTUAL),)
 521 ifneq ($$($$($(2)_KCONFIG_VAR)),y)
 522 $$(error $$($(2)_NAME) is in the dependency chain of $$($(1)_NAME) that \
 523 has added it to its _DEPENDENCIES variable without selecting it or \
 524 depending on it from Config.in)
 525 endif
 526 endif
 527 endif
 528 endef
 529
 530 $(foreach pkg,$(call UPPERCASE,$(PACKAGES)),\
 531         $(foreach dep,$(call UPPERCASE,$($(pkg)_FINAL_ALL_DEPENDENCIES)),\
 532                 $(eval $(call CHECK_ONE_DEPENDENCY,$(pkg),$(dep))$(sep))))
 533
 534 endif
 535
 536 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 537         $(HOST_DIR) $(BINARIES_DIR)
 538
 539 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 540         $(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
 541
 542 prepare: $(BUILD_DIR)/buildroot-config/auto.conf
 543
 544 world: target-post-image
 545
 546 .PHONY: all world toolchain dirs clean distclean source outputmakefile \
 547         legal-info legal-info-prepare legal-info-clean printvars help \
 548         list-defconfigs target-finalize target-post-image source-check
 549
 550 # Populating the staging with the base directories is handled by the skeleton package
 551 $(STAGING_DIR):
 552         @mkdir -p $(STAGING_DIR)
 553         @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging
 554
 555 RSYNC_VCS_EXCLUSIONS = \
 556         --exclude .svn --exclude .git --exclude .hg --exclude .bzr \
 557         --exclude CVS
 558
 559 STRIP_FIND_CMD = find $(TARGET_DIR)
 560 ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
 561 STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
 562 endif
 563 STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
 564 # file exclusions:
 565 # - libpthread.so: a non-stripped libpthread shared library is needed for
 566 #   proper debugging of pthread programs using gdb.
 567 # - ld.so: a non-stripped dynamic linker library is needed for valgrind
 568 # - kernel modules (*.ko): do not function properly when stripped like normal
 569 #   applications and libraries. Normally kernel modules are already excluded
 570 #   by the executable permission check above, so the explicit exclusion is only
 571 #   done for kernel modules with incorrect permissions.
 572 STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* ld-*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
 573
 574 ifeq ($(BR2_ECLIPSE_REGISTER),y)
 575 define TOOLCHAIN_ECLIPSE_REGISTER
 576         ./support/scripts/eclipse-register-toolchain `readlink -f $(O)` \
 577                 $(notdir $(TARGET_CROSS)) $(BR2_ARCH)
 578 endef
 579 TARGET_FINALIZE_HOOKS += TOOLCHAIN_ECLIPSE_REGISTER
 580 endif
 581
 582 # Generate locale data. Basically, we call the localedef program
 583 # (built by the host-localedef package) for each locale. The input
 584 # data comes preferably from the toolchain, or if the toolchain does
 585 # not have them (Linaro toolchains), we use the ones available on the
 586 # host machine.
 587 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 588 GLIBC_GENERATE_LOCALES = $(call qstrip,$(BR2_GENERATE_LOCALE))
 589 ifneq ($(GLIBC_GENERATE_LOCALES),)
 590 PACKAGES += host-localedef
 591
 592 define GENERATE_GLIBC_LOCALES
 593         $(Q)mkdir -p $(TARGET_DIR)/usr/lib/locale/
 594         $(Q)for locale in $(GLIBC_GENERATE_LOCALES) ; do \
 595                 inputfile=`echo $${locale} | cut -f1 -d'.'` ; \
 596                 charmap=`echo $${locale} | cut -f2 -d'.' -s` ; \
 597                 if test -z "$${charmap}" ; then \
 598                         charmap="UTF-8" ; \
 599                 fi ; \
 600                 echo "Generating locale $${inputfile}.$${charmap}" ; \
 601                 I18NPATH=$(STAGING_DIR)/usr/share/i18n:/usr/share/i18n \
 602                 $(HOST_DIR)/usr/bin/localedef \
 603                         --prefix=$(TARGET_DIR) \
 604                         --$(call LOWERCASE,$(BR2_ENDIAN))-endian \
 605                         -i $${inputfile} -f $${charmap} \
 606                         $${locale} ; \
 607         done
 608 endef
 609 TARGET_FINALIZE_HOOKS += GENERATE_GLIBC_LOCALES
 610 endif
 611 endif
 612
 613 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 614 LOCALE_WHITELIST = $(BUILD_DIR)/locales.nopurge
 615 LOCALE_NOPURGE = $(call qstrip,$(BR2_ENABLE_LOCALE_WHITELIST))
 616
 617 # This piece of junk does the following:
 618 # First collect the whitelist in a file.
 619 # Then go over all the locale dirs and for each subdir, check if it exists
 620 # in the whitelist file. If it doesn't, kill it.
 621 # Finally, specifically for X11, regenerate locale.dir from the whitelist.
 622 define PURGE_LOCALES
 623         rm -f $(LOCALE_WHITELIST)
 624         for i in $(LOCALE_NOPURGE) locale-archive; do echo $$i >> $(LOCALE_WHITELIST); done
 625
 626         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/lib/locale)); \
 627         do \
 628                 for langdir in $$dir/*; \
 629                 do \
 630                         if [ -e "$${langdir}" ]; \
 631                         then \
 632                                 grep -qx "$${langdir##*/}" $(LOCALE_WHITELIST) || rm -rf $$langdir; \
 633                         fi \
 634                 done; \
 635         done
 636         if [ -d $(TARGET_DIR)/usr/share/X11/locale ]; \
 637         then \
 638                 for lang in $(LOCALE_NOPURGE); \
 639                 do \
 640                         if [ -f $(TARGET_DIR)/usr/share/X11/locale/$$lang/XLC_LOCALE ]; \
 641                         then \
 642                                 echo "$$lang/XLC_LOCALE: $$lang"; \
 643                         fi \
 644                 done > $(TARGET_DIR)/usr/share/X11/locale/locale.dir; \
 645         fi
 646 endef
 647 TARGET_FINALIZE_HOOKS += PURGE_LOCALES
 648 endif
 649
 650 $(TARGETS_ROOTFS): target-finalize
 651
 652 target-finalize: $(PACKAGES)
 653         @$(call MESSAGE,"Finalizing target directory")
 654         $(foreach hook,$(TARGET_FINALIZE_HOOKS),$($(hook))$(sep))
 655         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/share/aclocal \
 656                 $(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
 657                 $(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
 658         find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
 659         find $(TARGET_DIR)/lib/ $(TARGET_DIR)/usr/lib/ $(TARGET_DIR)/usr/libexec/ \
 660                 \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 661 ifneq ($(BR2_PACKAGE_GDB),y)
 662         rm -rf $(TARGET_DIR)/usr/share/gdb
 663 endif
 664 ifneq ($(BR2_PACKAGE_BASH),y)
 665         rm -rf $(TARGET_DIR)/usr/share/bash-completion
 666 endif
 667 ifneq ($(BR2_PACKAGE_ZSH),y)
 668         rm -rf $(TARGET_DIR)/usr/share/zsh
 669 endif
 670         rm -rf $(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/man
 671         rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
 672         rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
 673         rm -rf $(TARGET_DIR)/usr/share/gtk-doc
 674         rmdir $(TARGET_DIR)/usr/share 2>/dev/null || true
 675         $(STRIP_FIND_CMD) | xargs -0 $(STRIPCMD) 2>/dev/null || true
 676
 677 # See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
 678 # besides the one in which crash occurred; or SIGTRAP kills my program when
 679 # I set a breakpoint"
 680 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 681         find $(TARGET_DIR)/lib/ -type f -name 'libpthread*.so*' | \
 682                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 683 endif
 684
 685 # Valgrind needs ld.so with enough information, so only strip
 686 # debugging symbols.
 687         find $(TARGET_DIR)/lib/ -type f -name 'ld-*.so*' | \
 688                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 689         test -f $(TARGET_DIR)/etc/ld.so.conf && \
 690                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf file"; exit 1; } || true
 691         test -d $(TARGET_DIR)/etc/ld.so.conf.d && \
 692                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf.d directory"; exit 1; } || true
 693         mkdir -p $(TARGET_DIR)/etc
 694         ( \
 695                 echo "NAME=Buildroot"; \
 696                 echo "VERSION=$(BR2_VERSION_FULL)"; \
 697                 echo "ID=buildroot"; \
 698                 echo "VERSION_ID=$(BR2_VERSION)"; \
 699                 echo "PRETTY_NAME=\"Buildroot $(BR2_VERSION)\"" \
 700         ) >  $(TARGET_DIR)/etc/os-release
 701
 702         @$(foreach d, $(call qstrip,$(BR2_ROOTFS_OVERLAY)), \
 703                 $(call MESSAGE,"Copying overlay $(d)"); \
 704                 rsync -a --ignore-times --keep-dirlinks $(RSYNC_VCS_EXCLUSIONS) \
 705                         --chmod=u=rwX,go=rX --exclude .empty --exclude '*~' \
 706                         $(d)/ $(TARGET_DIR)$(sep))
 707
 708         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 709                 $(call MESSAGE,"Executing post-build script $(s)"); \
 710                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 711
 712 target-post-image: $(TARGETS_ROOTFS) target-finalize
 713         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_IMAGE_SCRIPT)), \
 714                 $(call MESSAGE,"Executing post-image script $(s)"); \
 715                 $(EXTRA_ENV) $(s) $(BINARIES_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 716
 717 source: $(foreach p,$(PACKAGES),$(p)-all-source)
 718
 719 _external-deps: $(foreach p,$(PACKAGES),$(p)-all-external-deps)
 720 external-deps:
 721         @$(MAKE1) -Bs $(EXTRAMAKEARGS) _external-deps | sort -u
 722
 723 # check if download URLs are outdated
 724 source-check: $(foreach p,$(PACKAGES),$(p)-all-source-check)
 725
 726 legal-info-clean:
 727         @rm -fr $(LEGAL_INFO_DIR)
 728
 729 legal-info-prepare: $(LEGAL_INFO_DIR)
 730         @$(call MESSAGE,"Collecting legal info")
 731         @$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
 732         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,TARGET)
 733         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,HOST)
 734         @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,not saved,HOST)
 735         @$(call legal-warning,the Buildroot source code has not been saved)
 736         @cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
 737
 738 legal-info: dirs legal-info-clean legal-info-prepare $(foreach p,$(PACKAGES),$(p)-all-legal-info) \
 739                 $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST)
 740         @cat support/legal-info/README.header >>$(LEGAL_REPORT)
 741         @if [ -r $(LEGAL_WARNINGS) ]; then \
 742                 cat support/legal-info/README.warnings-header \
 743                         $(LEGAL_WARNINGS) >>$(LEGAL_REPORT); \
 744                 cat $(LEGAL_WARNINGS); fi
 745         @rm -f $(LEGAL_WARNINGS)
 746         @(cd $(LEGAL_INFO_DIR); \
 747                 find * -type f -exec sha256sum {} + | LC_ALL=C sort -k2 \
 748                         >.legal-info.sha256; \
 749                 mv .legal-info.sha256 legal-info.sha256)
 750         @echo "Legal info produced in $(LEGAL_INFO_DIR)"
 751
 752 show-targets:
 753         @echo $(PACKAGES) $(TARGETS_ROOTFS)
 754
 755 graph-build: $(O)/build/build-time.log
 756         @install -d $(GRAPHS_DIR)
 757         $(foreach o,name build duration,./support/scripts/graph-build-time \
 758                                         --type=histogram --order=$(o) --input=$(<) \
 759                                         --output=$(GRAPHS_DIR)/build.hist-$(o).$(BR_GRAPH_OUT) \
 760                                         $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 761         $(foreach t,packages steps,./support/scripts/graph-build-time \
 762                                    --type=pie-$(t) --input=$(<) \
 763                                    --output=$(GRAPHS_DIR)/build.pie-$(t).$(BR_GRAPH_OUT) \
 764                                    $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 765
 766 graph-depends-requirements:
 767         @dot -? >/dev/null 2>&1 || \
 768                 { echo "ERROR: The 'dot' program from Graphviz is needed for graph-depends" >&2; exit 1; }
 769
 770 graph-depends: graph-depends-requirements
 771         @$(INSTALL) -d $(GRAPHS_DIR)
 772         @cd "$(CONFIG_DIR)"; \
 773         $(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
 774                 --direct -o $(GRAPHS_DIR)/$(@).dot
 775         dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
 776                 -o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
 777                 $(GRAPHS_DIR)/$(@).dot
 778
 779 graph-size:
 780         $(Q)mkdir -p $(GRAPHS_DIR)
 781         $(Q)$(TOPDIR)/support/scripts/size-stats --builddir $(BASE_DIR) \
 782                 --graph $(GRAPHS_DIR)/graph-size.$(BR_GRAPH_OUT) \
 783                 --file-size-csv $(GRAPHS_DIR)/file-size-stats.csv \
 784                 --package-size-csv $(GRAPHS_DIR)/package-size-stats.csv
 785
 786 check-dependencies:
 787         @cd "$(CONFIG_DIR)"; \
 788         $(TOPDIR)/support/scripts/graph-depends -C
 789
 790 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 791
 792 all: menuconfig
 793
 794 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 795
 796 # configuration
 797 # ---------------------------------------------------------------------------
 798
 799 HOSTCFLAGS = $(CFLAGS_FOR_BUILD)
 800 export HOSTCFLAGS
 801
 802 .PHONY: prepare-kconfig
 803 prepare-kconfig: outputmakefile $(BUILD_DIR)/.br2-external.in
 804
 805 $(BUILD_DIR)/buildroot-config/%onf:
 806         mkdir -p $(@D)/lxdialog
 807         PKG_CONFIG_PATH="$(HOST_PKG_CONFIG_PATH)" $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" \
 808             obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
 809
 810 DEFCONFIG = $(call qstrip,$(BR2_DEFCONFIG))
 811
 812 # We don't want to fully expand BR2_DEFCONFIG here, so Kconfig will
 813 # recognize that if it's still at its default $(CONFIG_DIR)/defconfig
 814 COMMON_CONFIG_ENV = \
 815         BR2_DEFCONFIG='$(call qstrip,$(value BR2_DEFCONFIG))' \
 816         KCONFIG_AUTOCONFIG=$(BUILD_DIR)/buildroot-config/auto.conf \
 817         KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
 818         KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
 819         BR2_CONFIG=$(BR2_CONFIG) \
 820         HOST_GCC_VERSION="$(HOSTCC_VERSION)" \
 821         BUILD_DIR=$(BUILD_DIR) \
 822         SKIP_LEGACY=
 823
 824 xconfig: $(BUILD_DIR)/buildroot-config/qconf prepare-kconfig
 825         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 826
 827 gconfig: $(BUILD_DIR)/buildroot-config/gconf prepare-kconfig
 828         @$(COMMON_CONFIG_ENV) srctree=$(TOPDIR) $< $(CONFIG_CONFIG_IN)
 829
 830 menuconfig: $(BUILD_DIR)/buildroot-config/mconf prepare-kconfig
 831         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 832
 833 nconfig: $(BUILD_DIR)/buildroot-config/nconf prepare-kconfig
 834         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 835
 836 config: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 837         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 838
 839 # For the config targets that automatically select options, we pass
 840 # SKIP_LEGACY=y to disable the legacy options. However, in that case
 841 # no values are set for the legacy options so a subsequent oldconfig
 842 # will query them. Therefore, run an additional olddefconfig.
 843
 844 oldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 845         @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)
 846
 847 randconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 848         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --randconfig $(CONFIG_CONFIG_IN)
 849         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 850
 851 allyesconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 852         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allyesconfig $(CONFIG_CONFIG_IN)
 853         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 854
 855 allnoconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 856         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allnoconfig $(CONFIG_CONFIG_IN)
 857         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 858
 859 randpackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 860         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 861         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 862                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 863                 $< --randconfig $(CONFIG_CONFIG_IN)
 864         @rm -f $(CONFIG_DIR)/.config.nopkg
 865         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 866
 867 allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 868         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 869         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 870                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 871                 $< --allyesconfig $(CONFIG_CONFIG_IN)
 872         @rm -f $(CONFIG_DIR)/.config.nopkg
 873         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 874
 875 allnopackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 876         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 877         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 878                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 879                 $< --allnoconfig $(CONFIG_CONFIG_IN)
 880         @rm -f $(CONFIG_DIR)/.config.nopkg
 881         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 882
 883 silentoldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 884         $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
 885
 886 olddefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 887         $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
 888
 889 defconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 890         @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
 891
 892 define percent_defconfig
 893 # Override the BR2_DEFCONFIG from COMMON_CONFIG_ENV with the new defconfig
 894 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(1)/configs/%_defconfig prepare-kconfig
 895         @$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
 896                 $$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
 897 endef
 898 $(eval $(foreach d,$(call reverse,$(TOPDIR) $(BR2_EXTERNAL_DIRS)),$(call percent_defconfig,$(d))$(sep)))
 899
 900 savedefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 901         @$(COMMON_CONFIG_ENV) $< \
 902                 --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
 903                 $(CONFIG_CONFIG_IN)
 904         @$(SED) '/BR2_DEFCONFIG=/d' $(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig)
 905
 906 .PHONY: defconfig savedefconfig
 907
 908 ################################################################################
 909 #
 910 # Cleanup and misc junk
 911 #
 912 ################################################################################
 913
 914 # outputmakefile generates a Makefile in the output directory, if using a
 915 # separate output directory. This allows convenient use of make in the
 916 # output directory.
 917 outputmakefile:
 918 ifeq ($(NEED_WRAPPER),y)
 919         $(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
 920 endif
 921
 922 # Even though the target is a real file, we mark it as PHONY as we
 923 # want it to be re-generated each time make is invoked, in case the
 924 # value of BR2_EXTERNAL is changed.
 925 .PHONY: $(BUILD_DIR)/.br2-external.in
 926 $(BUILD_DIR)/.br2-external.in: $(BUILD_DIR)
 927         $(Q)support/scripts/br2-external -k -o "$(@)" $(BR2_EXTERNAL)
 928
 929 # printvars prints all the variables currently defined in our
 930 # Makefiles. Alternatively, if a non-empty VARS variable is passed,
 931 # only the variables matching the make pattern passed in VARS are
 932 # displayed.
 933 printvars:
 934         @$(foreach V, \
 935                 $(sort $(if $(VARS),$(filter $(VARS),$(.VARIABLES)),$(.VARIABLES))), \
 936                 $(if $(filter-out environment% default automatic, \
 937                                 $(origin $V)), \
 938                 $(info $V=$($V) ($(value $V)))))
 939
 940 clean:
 941         rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
 942                 $(BUILD_DIR) $(BASE_DIR)/staging \
 943                 $(LEGAL_INFO_DIR) $(GRAPHS_DIR)
 944
 945 distclean: clean
 946 ifeq ($(O),$(CURDIR)/output)
 947         rm -rf $(O)
 948 endif
 949         rm -rf $(TOPDIR)/dl $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
 950                 $(CONFIG_DIR)/.auto.deps $(BR2_EXTERNAL_FILE)
 951
 952 help:
 953         @echo 'Cleaning:'
 954         @echo '  clean                  - delete all files created by build'
 955         @echo '  distclean              - delete all non-source files (including .config)'
 956         @echo
 957         @echo 'Build:'
 958         @echo '  all                    - make world'
 959         @echo '  toolchain              - build toolchain'
 960         @echo
 961         @echo 'Configuration:'
 962         @echo '  menuconfig             - interactive curses-based configurator'
 963         @echo '  nconfig                - interactive ncurses-based configurator'
 964         @echo '  xconfig                - interactive Qt-based configurator'
 965         @echo '  gconfig                - interactive GTK-based configurator'
 966         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 967         @echo '  silentoldconfig        - Same as oldconfig, but quietly, additionally update deps'
 968         @echo '  olddefconfig           - Same as silentoldconfig but sets new symbols to their default value'
 969         @echo '  randconfig             - New config with random answer to all options'
 970         @echo '  defconfig              - New config with default answer to all options'
 971         @echo '                             BR2_DEFCONFIG, if set, is used as input'
 972         @echo '  savedefconfig          - Save current config to BR2_DEFCONFIG (minimal config)'
 973         @echo '  allyesconfig           - New config where all options are accepted with yes'
 974         @echo '  allnoconfig            - New config where all options are answered with no'
 975         @echo '  randpackageconfig      - New config with random answer to package options'
 976         @echo '  allyespackageconfig    - New config where pkg options are accepted with yes'
 977         @echo '  allnopackageconfig     - New config where package options are answered with no'
 978         @echo
 979         @echo 'Package-specific:'
 980         @echo '  <pkg>                  - Build and install <pkg> and all its dependencies'
 981         @echo '  <pkg>-source           - Only download the source files for <pkg>'
 982         @echo '  <pkg>-extract          - Extract <pkg> sources'
 983         @echo '  <pkg>-patch            - Apply patches to <pkg>'
 984         @echo '  <pkg>-depends          - Build <pkg>'\''s dependencies'
 985         @echo '  <pkg>-configure        - Build <pkg> up to the configure step'
 986         @echo '  <pkg>-build            - Build <pkg> up to the build step'
 987         @echo '  <pkg>-show-depends     - List packages on which <pkg> depends'
 988         @echo '  <pkg>-show-rdepends    - List packages which have <pkg> as a dependency'
 989         @echo '  <pkg>-graph-depends    - Generate a graph of <pkg>'\''s dependencies'
 990         @echo '  <pkg>-graph-rdepends   - Generate a graph of <pkg>'\''s reverse dependencies'
 991         @echo '  <pkg>-dirclean         - Remove <pkg> build directory'
 992         @echo '  <pkg>-reconfigure      - Restart the build from the configure step'
 993         @echo '  <pkg>-rebuild          - Restart the build from the build step'
 994         $(foreach p,$(HELP_PACKAGES), \
 995                 @echo $(sep) \
 996                 @echo '$($(p)_NAME):' $(sep) \
 997                 $($(p)_HELP_CMDS)$(sep))
 998         @echo
 999         @echo 'Documentation:'
1000         @echo '  manual                 - build manual in all formats'
1001         @echo '  manual-html            - build manual in HTML'
1002         @echo '  manual-split-html      - build manual in split HTML'
1003         @echo '  manual-pdf             - build manual in PDF'
1004         @echo '  manual-text            - build manual in text'
1005         @echo '  manual-epub            - build manual in ePub'
1006         @echo '  graph-build            - generate graphs of the build times'
1007         @echo '  graph-depends          - generate graph of the dependency tree'
1008         @echo '  graph-size             - generate stats of the filesystem size'
1009         @echo '  list-defconfigs        - list all defconfigs (pre-configured minimal systems)'
1010         @echo
1011         @echo 'Miscellaneous:'
1012         @echo '  source                 - download all sources needed for offline-build'
1013         @echo '  source-check           - check selected packages for valid download URLs'
1014         @echo '  external-deps          - list external packages used'
1015         @echo '  legal-info             - generate info about license compliance'
1016         @echo
1017         @echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
1018         @echo '  make O=dir             - Locate all output files in "dir", including .config'
1019         @echo
1020         @echo 'For further details, see README, generate the Buildroot manual, or consult'
1021         @echo 'it on-line at http://buildroot.org/docs.html'
1022         @echo
1023
1024 # List the defconfig files
1025 # $(1): base directory
1026 # $(2): br2-external name, empty for bundled
1027 define list-defconfigs
1028         @first=true; \
1029         for defconfig in $(1)/configs/*_defconfig; do \
1030                 [ -f "$${defconfig}" ] || continue; \
1031                 if $${first}; then \
1032                         if [ "$(2)" ]; then \
1033                                 printf 'External configs in "$(call qstrip,$(2))":\n'; \
1034                         else \
1035                                 printf "Built-in configs:\n"; \
1036                         fi; \
1037                         first=false; \
1038                 fi; \
1039                 defconfig="$${defconfig##*/}"; \
1040                 printf "  %-35s - Build for %s\n" "$${defconfig}" "$${defconfig%_defconfig}"; \
1041         done; \
1042         $${first} || printf "\n"
1043 endef
1044
1045 # We iterate over BR2_EXTERNAL_NAMES rather than BR2_EXTERNAL_DIRS,
1046 # because we want to display the name of the br2-external tree.
1047 list-defconfigs:
1048         $(call list-defconfigs,$(TOPDIR))
1049         $(foreach name,$(BR2_EXTERNAL_NAMES),\
1050                 $(call list-defconfigs,$(BR2_EXTERNAL_$(name)_PATH),\
1051                         $(BR2_EXTERNAL_$(name)_DESC))$(sep))
1052
1053 release: OUT = buildroot-$(BR2_VERSION)
1054
1055 # Create release tarballs. We need to fiddle a bit to add the generated
1056 # documentation to the git output
1057 release:
1058         git archive --format=tar --prefix=$(OUT)/ HEAD > $(OUT).tar
1059         $(MAKE) O=$(OUT) manual-html manual-text manual-pdf
1060         $(MAKE) O=$(OUT) manual-clean
1061         tar rf $(OUT).tar $(OUT)
1062         gzip -9 -c < $(OUT).tar > $(OUT).tar.gz
1063         bzip2 -9 -c < $(OUT).tar > $(OUT).tar.bz2
1064         rm -rf $(OUT) $(OUT).tar
1065
1066 print-version:
1067         @echo $(BR2_VERSION_FULL)
1068
1069 include docs/manual/manual.mk
1070 -include $(foreach dir,$(BR2_EXTERNAL_DIRS),$(dir)/docs/*/*.mk)
1071
1072 .PHONY: $(noconfig_targets)
1073
1074 endif #umask / $(CURDIR) / $(O)