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-rc1
  90 # Actual time the release is cut (for reproducible builds)
  91 BR2_VERSION_EPOCH = 1486825200
  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 unexport GCC_COLORS
 406
 407 GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)
 408
 409 PACKAGES :=
 410 PACKAGES_ALL :=
 411
 412 # silent mode requested?
 413 QUIET := $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),-q)
 414
 415 # Strip off the annoying quoting
 416 ARCH := $(call qstrip,$(BR2_ARCH))
 417
 418 KERNEL_ARCH := $(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 419         -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 420         -e s/arcle/arc/ \
 421         -e s/arceb/arc/ \
 422         -e s/arm.*/arm/ -e s/sa110/arm/ \
 423         -e s/aarch64.*/arm64/ \
 424         -e s/bfin/blackfin/ \
 425         -e s/or1k/openrisc/ \
 426         -e s/parisc64/parisc/ \
 427         -e s/powerpc64.*/powerpc/ \
 428         -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 429         -e s/sh.*/sh/ \
 430         -e s/microblazeel/microblaze/)
 431
 432 ZCAT := $(call qstrip,$(BR2_ZCAT))
 433 BZCAT := $(call qstrip,$(BR2_BZCAT))
 434 XZCAT := $(call qstrip,$(BR2_XZCAT))
 435 TAR_OPTIONS = $(call qstrip,$(BR2_TAR_OPTIONS)) -xf
 436
 437 # packages compiled for the host go here
 438 HOST_DIR := $(call qstrip,$(BR2_HOST_DIR))
 439
 440 # Quotes are needed for spaces and all in the original PATH content.
 441 BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin:$(PATH)"
 442
 443 # Location of a file giving a big fat warning that output/target
 444 # should not be used as the root filesystem.
 445 TARGET_DIR_WARNING_FILE = $(TARGET_DIR)/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
 446
 447 ifeq ($(BR2_CCACHE),y)
 448 CCACHE := $(HOST_DIR)/usr/bin/ccache
 449 BR_CACHE_DIR ?= $(call qstrip,$(BR2_CCACHE_DIR))
 450 export BR_CACHE_DIR
 451 HOSTCC := $(CCACHE) $(HOSTCC)
 452 HOSTCXX := $(CCACHE) $(HOSTCXX)
 453 else
 454 export BR_NO_CCACHE
 455 endif
 456
 457 # Scripts in support/ or post-build scripts may need to reference
 458 # these locations, so export them so it is easier to use
 459 export BR2_CONFIG
 460 export BR2_REPRODUCIBLE
 461 export TARGET_DIR
 462 export STAGING_DIR
 463 export HOST_DIR
 464 export BINARIES_DIR
 465 export BASE_DIR
 466
 467 ################################################################################
 468 #
 469 # You should probably leave this stuff alone unless you know
 470 # what you are doing.
 471 #
 472 ################################################################################
 473
 474 all: world
 475
 476 # Include legacy before the other things, because package .mk files
 477 # may rely on it.
 478 include Makefile.legacy
 479
 480 include package/Makefile.in
 481 include support/dependencies/dependencies.mk
 482
 483 include toolchain/*.mk
 484 include toolchain/*/*.mk
 485
 486 # Include the package override file if one has been provided in the
 487 # configuration.
 488 PACKAGE_OVERRIDE_FILE = $(call qstrip,$(BR2_PACKAGE_OVERRIDE_FILE))
 489 ifneq ($(PACKAGE_OVERRIDE_FILE),)
 490 -include $(PACKAGE_OVERRIDE_FILE)
 491 endif
 492
 493 include $(sort $(wildcard package/*/*.mk))
 494
 495 include boot/common.mk
 496 include linux/linux.mk
 497 include fs/common.mk
 498
 499 # If using a br2-external tree, the BR2_EXTERNAL_$(NAME)_PATH variables
 500 # are also present in the .config file. Since .config is included after
 501 # we defined them in the Makefile, the values for those variables are
 502 # quoted. We just include the generated Makefile fragment .br2-external.mk
 503 # a third time, which will set those variables to the un-quoted values.
 504 include $(BR2_EXTERNAL_FILE)
 505
 506 # Nothing to include if no BR2_EXTERNAL tree in use
 507 include $(BR2_EXTERNAL_MKS)
 508
 509 # Now we are sure we have all the packages scanned and defined. We now
 510 # check for each package in the list of enabled packages, that all its
 511 # dependencies are indeed enabled.
 512 #
 513 # Only trigger the check for default builds. If the user forces building
 514 # a package, even if not enabled in the configuration, we want to accept
 515 # it.
 516 #
 517 ifeq ($(MAKECMDGOALS),)
 518
 519 define CHECK_ONE_DEPENDENCY
 520 ifeq ($$($(2)_TYPE),target)
 521 ifeq ($$($(2)_IS_VIRTUAL),)
 522 ifneq ($$($$($(2)_KCONFIG_VAR)),y)
 523 $$(error $$($(2)_NAME) is in the dependency chain of $$($(1)_NAME) that \
 524 has added it to its _DEPENDENCIES variable without selecting it or \
 525 depending on it from Config.in)
 526 endif
 527 endif
 528 endif
 529 endef
 530
 531 $(foreach pkg,$(call UPPERCASE,$(PACKAGES)),\
 532         $(foreach dep,$(call UPPERCASE,$($(pkg)_FINAL_ALL_DEPENDENCIES)),\
 533                 $(eval $(call CHECK_ONE_DEPENDENCY,$(pkg),$(dep))$(sep))))
 534
 535 endif
 536
 537 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 538         $(HOST_DIR) $(BINARIES_DIR)
 539
 540 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 541         $(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
 542
 543 prepare: $(BUILD_DIR)/buildroot-config/auto.conf
 544
 545 world: target-post-image
 546
 547 .PHONY: all world toolchain dirs clean distclean source outputmakefile \
 548         legal-info legal-info-prepare legal-info-clean printvars help \
 549         list-defconfigs target-finalize target-post-image source-check
 550
 551 # Populating the staging with the base directories is handled by the skeleton package
 552 $(STAGING_DIR):
 553         @mkdir -p $(STAGING_DIR)
 554         @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging
 555
 556 RSYNC_VCS_EXCLUSIONS = \
 557         --exclude .svn --exclude .git --exclude .hg --exclude .bzr \
 558         --exclude CVS
 559
 560 STRIP_FIND_CMD = find $(TARGET_DIR)
 561 ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
 562 STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
 563 endif
 564 STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
 565 # file exclusions:
 566 # - libpthread.so: a non-stripped libpthread shared library is needed for
 567 #   proper debugging of pthread programs using gdb.
 568 # - ld.so: a non-stripped dynamic linker library is needed for valgrind
 569 # - kernel modules (*.ko): do not function properly when stripped like normal
 570 #   applications and libraries. Normally kernel modules are already excluded
 571 #   by the executable permission check above, so the explicit exclusion is only
 572 #   done for kernel modules with incorrect permissions.
 573 STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* ld-*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
 574
 575 ifeq ($(BR2_ECLIPSE_REGISTER),y)
 576 define TOOLCHAIN_ECLIPSE_REGISTER
 577         ./support/scripts/eclipse-register-toolchain `readlink -f $(O)` \
 578                 $(notdir $(TARGET_CROSS)) $(BR2_ARCH)
 579 endef
 580 TARGET_FINALIZE_HOOKS += TOOLCHAIN_ECLIPSE_REGISTER
 581 endif
 582
 583 # Generate locale data. Basically, we call the localedef program
 584 # (built by the host-localedef package) for each locale. The input
 585 # data comes preferably from the toolchain, or if the toolchain does
 586 # not have them (Linaro toolchains), we use the ones available on the
 587 # host machine.
 588 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 589 GLIBC_GENERATE_LOCALES = $(call qstrip,$(BR2_GENERATE_LOCALE))
 590 ifneq ($(GLIBC_GENERATE_LOCALES),)
 591 PACKAGES += host-localedef
 592
 593 define GENERATE_GLIBC_LOCALES
 594         $(Q)mkdir -p $(TARGET_DIR)/usr/lib/locale/
 595         $(Q)for locale in $(GLIBC_GENERATE_LOCALES) ; do \
 596                 inputfile=`echo $${locale} | cut -f1 -d'.'` ; \
 597                 charmap=`echo $${locale} | cut -f2 -d'.' -s` ; \
 598                 if test -z "$${charmap}" ; then \
 599                         charmap="UTF-8" ; \
 600                 fi ; \
 601                 echo "Generating locale $${inputfile}.$${charmap}" ; \
 602                 I18NPATH=$(STAGING_DIR)/usr/share/i18n:/usr/share/i18n \
 603                 $(HOST_DIR)/usr/bin/localedef \
 604                         --prefix=$(TARGET_DIR) \
 605                         --$(call LOWERCASE,$(BR2_ENDIAN))-endian \
 606                         -i $${inputfile} -f $${charmap} \
 607                         $${locale} ; \
 608         done
 609 endef
 610 TARGET_FINALIZE_HOOKS += GENERATE_GLIBC_LOCALES
 611 endif
 612 endif
 613
 614 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 615 LOCALE_WHITELIST = $(BUILD_DIR)/locales.nopurge
 616 LOCALE_NOPURGE = $(call qstrip,$(BR2_ENABLE_LOCALE_WHITELIST))
 617
 618 # This piece of junk does the following:
 619 # First collect the whitelist in a file.
 620 # Then go over all the locale dirs and for each subdir, check if it exists
 621 # in the whitelist file. If it doesn't, kill it.
 622 # Finally, specifically for X11, regenerate locale.dir from the whitelist.
 623 define PURGE_LOCALES
 624         rm -f $(LOCALE_WHITELIST)
 625         for i in $(LOCALE_NOPURGE) locale-archive; do echo $$i >> $(LOCALE_WHITELIST); done
 626
 627         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/lib/locale)); \
 628         do \
 629                 for langdir in $$dir/*; \
 630                 do \
 631                         if [ -e "$${langdir}" ]; \
 632                         then \
 633                                 grep -qx "$${langdir##*/}" $(LOCALE_WHITELIST) || rm -rf $$langdir; \
 634                         fi \
 635                 done; \
 636         done
 637         if [ -d $(TARGET_DIR)/usr/share/X11/locale ]; \
 638         then \
 639                 for lang in $(LOCALE_NOPURGE); \
 640                 do \
 641                         if [ -f $(TARGET_DIR)/usr/share/X11/locale/$$lang/XLC_LOCALE ]; \
 642                         then \
 643                                 echo "$$lang/XLC_LOCALE: $$lang"; \
 644                         fi \
 645                 done > $(TARGET_DIR)/usr/share/X11/locale/locale.dir; \
 646         fi
 647 endef
 648 TARGET_FINALIZE_HOOKS += PURGE_LOCALES
 649 endif
 650
 651 $(TARGETS_ROOTFS): target-finalize
 652
 653 target-finalize: $(PACKAGES)
 654         @$(call MESSAGE,"Finalizing target directory")
 655         $(foreach hook,$(TARGET_FINALIZE_HOOKS),$($(hook))$(sep))
 656         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/share/aclocal \
 657                 $(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
 658                 $(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
 659         find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
 660         find $(TARGET_DIR)/lib/ $(TARGET_DIR)/usr/lib/ $(TARGET_DIR)/usr/libexec/ \
 661                 \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 662 ifneq ($(BR2_PACKAGE_GDB),y)
 663         rm -rf $(TARGET_DIR)/usr/share/gdb
 664 endif
 665 ifneq ($(BR2_PACKAGE_BASH),y)
 666         rm -rf $(TARGET_DIR)/usr/share/bash-completion
 667 endif
 668 ifneq ($(BR2_PACKAGE_ZSH),y)
 669         rm -rf $(TARGET_DIR)/usr/share/zsh
 670 endif
 671         rm -rf $(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/man
 672         rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
 673         rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
 674         rm -rf $(TARGET_DIR)/usr/share/gtk-doc
 675         rmdir $(TARGET_DIR)/usr/share 2>/dev/null || true
 676         $(STRIP_FIND_CMD) | xargs -0 $(STRIPCMD) 2>/dev/null || true
 677
 678 # See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
 679 # besides the one in which crash occurred; or SIGTRAP kills my program when
 680 # I set a breakpoint"
 681 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 682         find $(TARGET_DIR)/lib/ -type f -name 'libpthread*.so*' | \
 683                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 684 endif
 685
 686 # Valgrind needs ld.so with enough information, so only strip
 687 # debugging symbols.
 688         find $(TARGET_DIR)/lib/ -type f -name 'ld-*.so*' | \
 689                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 690         test -f $(TARGET_DIR)/etc/ld.so.conf && \
 691                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf file"; exit 1; } || true
 692         test -d $(TARGET_DIR)/etc/ld.so.conf.d && \
 693                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf.d directory"; exit 1; } || true
 694         mkdir -p $(TARGET_DIR)/etc
 695         ( \
 696                 echo "NAME=Buildroot"; \
 697                 echo "VERSION=$(BR2_VERSION_FULL)"; \
 698                 echo "ID=buildroot"; \
 699                 echo "VERSION_ID=$(BR2_VERSION)"; \
 700                 echo "PRETTY_NAME=\"Buildroot $(BR2_VERSION)\"" \
 701         ) >  $(TARGET_DIR)/etc/os-release
 702
 703         @$(foreach d, $(call qstrip,$(BR2_ROOTFS_OVERLAY)), \
 704                 $(call MESSAGE,"Copying overlay $(d)"); \
 705                 rsync -a --ignore-times --keep-dirlinks $(RSYNC_VCS_EXCLUSIONS) \
 706                         --chmod=u=rwX,go=rX --exclude .empty --exclude '*~' \
 707                         $(d)/ $(TARGET_DIR)$(sep))
 708
 709         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 710                 $(call MESSAGE,"Executing post-build script $(s)"); \
 711                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 712
 713 target-post-image: $(TARGETS_ROOTFS) target-finalize
 714         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_IMAGE_SCRIPT)), \
 715                 $(call MESSAGE,"Executing post-image script $(s)"); \
 716                 $(EXTRA_ENV) $(s) $(BINARIES_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 717
 718 source: $(foreach p,$(PACKAGES),$(p)-all-source)
 719
 720 _external-deps: $(foreach p,$(PACKAGES),$(p)-all-external-deps)
 721 external-deps:
 722         @$(MAKE1) -Bs $(EXTRAMAKEARGS) _external-deps | sort -u
 723
 724 # check if download URLs are outdated
 725 source-check: $(foreach p,$(PACKAGES),$(p)-all-source-check)
 726
 727 legal-info-clean:
 728         @rm -fr $(LEGAL_INFO_DIR)
 729
 730 legal-info-prepare: $(LEGAL_INFO_DIR)
 731         @$(call MESSAGE,"Collecting legal info")
 732         @$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
 733         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,TARGET)
 734         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,HOST)
 735         @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,not saved,HOST)
 736         @$(call legal-warning,the Buildroot source code has not been saved)
 737         @cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
 738
 739 legal-info: dirs legal-info-clean legal-info-prepare $(foreach p,$(PACKAGES),$(p)-all-legal-info) \
 740                 $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST)
 741         @cat support/legal-info/README.header >>$(LEGAL_REPORT)
 742         @if [ -r $(LEGAL_WARNINGS) ]; then \
 743                 cat support/legal-info/README.warnings-header \
 744                         $(LEGAL_WARNINGS) >>$(LEGAL_REPORT); \
 745                 cat $(LEGAL_WARNINGS); fi
 746         @rm -f $(LEGAL_WARNINGS)
 747         @(cd $(LEGAL_INFO_DIR); \
 748                 find * -type f -exec sha256sum {} + | LC_ALL=C sort -k2 \
 749                         >.legal-info.sha256; \
 750                 mv .legal-info.sha256 legal-info.sha256)
 751         @echo "Legal info produced in $(LEGAL_INFO_DIR)"
 752
 753 show-targets:
 754         @echo $(PACKAGES) $(TARGETS_ROOTFS)
 755
 756 graph-build: $(O)/build/build-time.log
 757         @install -d $(GRAPHS_DIR)
 758         $(foreach o,name build duration,./support/scripts/graph-build-time \
 759                                         --type=histogram --order=$(o) --input=$(<) \
 760                                         --output=$(GRAPHS_DIR)/build.hist-$(o).$(BR_GRAPH_OUT) \
 761                                         $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 762         $(foreach t,packages steps,./support/scripts/graph-build-time \
 763                                    --type=pie-$(t) --input=$(<) \
 764                                    --output=$(GRAPHS_DIR)/build.pie-$(t).$(BR_GRAPH_OUT) \
 765                                    $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 766
 767 graph-depends-requirements:
 768         @dot -? >/dev/null 2>&1 || \
 769                 { echo "ERROR: The 'dot' program from Graphviz is needed for graph-depends" >&2; exit 1; }
 770
 771 graph-depends: graph-depends-requirements
 772         @$(INSTALL) -d $(GRAPHS_DIR)
 773         @cd "$(CONFIG_DIR)"; \
 774         $(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
 775                 --direct -o $(GRAPHS_DIR)/$(@).dot
 776         dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
 777                 -o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
 778                 $(GRAPHS_DIR)/$(@).dot
 779
 780 graph-size:
 781         $(Q)mkdir -p $(GRAPHS_DIR)
 782         $(Q)$(TOPDIR)/support/scripts/size-stats --builddir $(BASE_DIR) \
 783                 --graph $(GRAPHS_DIR)/graph-size.$(BR_GRAPH_OUT) \
 784                 --file-size-csv $(GRAPHS_DIR)/file-size-stats.csv \
 785                 --package-size-csv $(GRAPHS_DIR)/package-size-stats.csv
 786
 787 check-dependencies:
 788         @cd "$(CONFIG_DIR)"; \
 789         $(TOPDIR)/support/scripts/graph-depends -C
 790
 791 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 792
 793 all: menuconfig
 794
 795 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 796
 797 # configuration
 798 # ---------------------------------------------------------------------------
 799
 800 HOSTCFLAGS = $(CFLAGS_FOR_BUILD)
 801 export HOSTCFLAGS
 802
 803 .PHONY: prepare-kconfig
 804 prepare-kconfig: outputmakefile $(BUILD_DIR)/.br2-external.in
 805
 806 $(BUILD_DIR)/buildroot-config/%onf:
 807         mkdir -p $(@D)/lxdialog
 808         PKG_CONFIG_PATH="$(HOST_PKG_CONFIG_PATH)" $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" \
 809             obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
 810
 811 DEFCONFIG = $(call qstrip,$(BR2_DEFCONFIG))
 812
 813 # We don't want to fully expand BR2_DEFCONFIG here, so Kconfig will
 814 # recognize that if it's still at its default $(CONFIG_DIR)/defconfig
 815 COMMON_CONFIG_ENV = \
 816         BR2_DEFCONFIG='$(call qstrip,$(value BR2_DEFCONFIG))' \
 817         KCONFIG_AUTOCONFIG=$(BUILD_DIR)/buildroot-config/auto.conf \
 818         KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
 819         KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
 820         BR2_CONFIG=$(BR2_CONFIG) \
 821         HOST_GCC_VERSION="$(HOSTCC_VERSION)" \
 822         BUILD_DIR=$(BUILD_DIR) \
 823         SKIP_LEGACY=
 824
 825 xconfig: $(BUILD_DIR)/buildroot-config/qconf prepare-kconfig
 826         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 827
 828 gconfig: $(BUILD_DIR)/buildroot-config/gconf prepare-kconfig
 829         @$(COMMON_CONFIG_ENV) srctree=$(TOPDIR) $< $(CONFIG_CONFIG_IN)
 830
 831 menuconfig: $(BUILD_DIR)/buildroot-config/mconf prepare-kconfig
 832         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 833
 834 nconfig: $(BUILD_DIR)/buildroot-config/nconf prepare-kconfig
 835         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 836
 837 config: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 838         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 839
 840 # For the config targets that automatically select options, we pass
 841 # SKIP_LEGACY=y to disable the legacy options. However, in that case
 842 # no values are set for the legacy options so a subsequent oldconfig
 843 # will query them. Therefore, run an additional olddefconfig.
 844
 845 oldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 846         @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)
 847
 848 randconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 849         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --randconfig $(CONFIG_CONFIG_IN)
 850         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 851
 852 allyesconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 853         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allyesconfig $(CONFIG_CONFIG_IN)
 854         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 855
 856 allnoconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 857         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allnoconfig $(CONFIG_CONFIG_IN)
 858         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 859
 860 randpackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 861         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 862         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 863                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 864                 $< --randconfig $(CONFIG_CONFIG_IN)
 865         @rm -f $(CONFIG_DIR)/.config.nopkg
 866         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 867
 868 allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 869         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 870         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 871                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 872                 $< --allyesconfig $(CONFIG_CONFIG_IN)
 873         @rm -f $(CONFIG_DIR)/.config.nopkg
 874         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 875
 876 allnopackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 877         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 878         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 879                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 880                 $< --allnoconfig $(CONFIG_CONFIG_IN)
 881         @rm -f $(CONFIG_DIR)/.config.nopkg
 882         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 883
 884 silentoldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 885         $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
 886
 887 olddefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 888         $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
 889
 890 defconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 891         @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
 892
 893 define percent_defconfig
 894 # Override the BR2_DEFCONFIG from COMMON_CONFIG_ENV with the new defconfig
 895 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(1)/configs/%_defconfig prepare-kconfig
 896         @$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
 897                 $$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
 898 endef
 899 $(eval $(foreach d,$(call reverse,$(TOPDIR) $(BR2_EXTERNAL_DIRS)),$(call percent_defconfig,$(d))$(sep)))
 900
 901 savedefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 902         @$(COMMON_CONFIG_ENV) $< \
 903                 --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
 904                 $(CONFIG_CONFIG_IN)
 905         @$(SED) '/BR2_DEFCONFIG=/d' $(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig)
 906
 907 .PHONY: defconfig savedefconfig
 908
 909 ################################################################################
 910 #
 911 # Cleanup and misc junk
 912 #
 913 ################################################################################
 914
 915 # outputmakefile generates a Makefile in the output directory, if using a
 916 # separate output directory. This allows convenient use of make in the
 917 # output directory.
 918 outputmakefile:
 919 ifeq ($(NEED_WRAPPER),y)
 920         $(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
 921 endif
 922
 923 # Even though the target is a real file, we mark it as PHONY as we
 924 # want it to be re-generated each time make is invoked, in case the
 925 # value of BR2_EXTERNAL is changed.
 926 .PHONY: $(BUILD_DIR)/.br2-external.in
 927 $(BUILD_DIR)/.br2-external.in: $(BUILD_DIR)
 928         $(Q)support/scripts/br2-external -k -o "$(@)" $(BR2_EXTERNAL)
 929
 930 # printvars prints all the variables currently defined in our
 931 # Makefiles. Alternatively, if a non-empty VARS variable is passed,
 932 # only the variables matching the make pattern passed in VARS are
 933 # displayed.
 934 printvars:
 935         @$(foreach V, \
 936                 $(sort $(if $(VARS),$(filter $(VARS),$(.VARIABLES)),$(.VARIABLES))), \
 937                 $(if $(filter-out environment% default automatic, \
 938                                 $(origin $V)), \
 939                 $(info $V=$($V) ($(value $V)))))
 940
 941 clean:
 942         rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
 943                 $(BUILD_DIR) $(BASE_DIR)/staging \
 944                 $(LEGAL_INFO_DIR) $(GRAPHS_DIR)
 945
 946 distclean: clean
 947 ifeq ($(O),$(CURDIR)/output)
 948         rm -rf $(O)
 949 endif
 950         rm -rf $(TOPDIR)/dl $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
 951                 $(CONFIG_DIR)/.auto.deps $(BR2_EXTERNAL_FILE)
 952
 953 help:
 954         @echo 'Cleaning:'
 955         @echo '  clean                  - delete all files created by build'
 956         @echo '  distclean              - delete all non-source files (including .config)'
 957         @echo
 958         @echo 'Build:'
 959         @echo '  all                    - make world'
 960         @echo '  toolchain              - build toolchain'
 961         @echo
 962         @echo 'Configuration:'
 963         @echo '  menuconfig             - interactive curses-based configurator'
 964         @echo '  nconfig                - interactive ncurses-based configurator'
 965         @echo '  xconfig                - interactive Qt-based configurator'
 966         @echo '  gconfig                - interactive GTK-based configurator'
 967         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 968         @echo '  silentoldconfig        - Same as oldconfig, but quietly, additionally update deps'
 969         @echo '  olddefconfig           - Same as silentoldconfig but sets new symbols to their default value'
 970         @echo '  randconfig             - New config with random answer to all options'
 971         @echo '  defconfig              - New config with default answer to all options'
 972         @echo '                             BR2_DEFCONFIG, if set, is used as input'
 973         @echo '  savedefconfig          - Save current config to BR2_DEFCONFIG (minimal config)'
 974         @echo '  allyesconfig           - New config where all options are accepted with yes'
 975         @echo '  allnoconfig            - New config where all options are answered with no'
 976         @echo '  randpackageconfig      - New config with random answer to package options'
 977         @echo '  allyespackageconfig    - New config where pkg options are accepted with yes'
 978         @echo '  allnopackageconfig     - New config where package options are answered with no'
 979         @echo
 980         @echo 'Package-specific:'
 981         @echo '  <pkg>                  - Build and install <pkg> and all its dependencies'
 982         @echo '  <pkg>-source           - Only download the source files for <pkg>'
 983         @echo '  <pkg>-extract          - Extract <pkg> sources'
 984         @echo '  <pkg>-patch            - Apply patches to <pkg>'
 985         @echo '  <pkg>-depends          - Build <pkg>'\''s dependencies'
 986         @echo '  <pkg>-configure        - Build <pkg> up to the configure step'
 987         @echo '  <pkg>-build            - Build <pkg> up to the build step'
 988         @echo '  <pkg>-show-depends     - List packages on which <pkg> depends'
 989         @echo '  <pkg>-show-rdepends    - List packages which have <pkg> as a dependency'
 990         @echo '  <pkg>-graph-depends    - Generate a graph of <pkg>'\''s dependencies'
 991         @echo '  <pkg>-graph-rdepends   - Generate a graph of <pkg>'\''s reverse dependencies'
 992         @echo '  <pkg>-dirclean         - Remove <pkg> build directory'
 993         @echo '  <pkg>-reconfigure      - Restart the build from the configure step'
 994         @echo '  <pkg>-rebuild          - Restart the build from the build step'
 995         $(foreach p,$(HELP_PACKAGES), \
 996                 @echo $(sep) \
 997                 @echo '$($(p)_NAME):' $(sep) \
 998                 $($(p)_HELP_CMDS)$(sep))
 999         @echo
1000         @echo 'Documentation:'
1001         @echo '  manual                 - build manual in all formats'
1002         @echo '  manual-html            - build manual in HTML'
1003         @echo '  manual-split-html      - build manual in split HTML'
1004         @echo '  manual-pdf             - build manual in PDF'
1005         @echo '  manual-text            - build manual in text'
1006         @echo '  manual-epub            - build manual in ePub'
1007         @echo '  graph-build            - generate graphs of the build times'
1008         @echo '  graph-depends          - generate graph of the dependency tree'
1009         @echo '  graph-size             - generate stats of the filesystem size'
1010         @echo '  list-defconfigs        - list all defconfigs (pre-configured minimal systems)'
1011         @echo
1012         @echo 'Miscellaneous:'
1013         @echo '  source                 - download all sources needed for offline-build'
1014         @echo '  source-check           - check selected packages for valid download URLs'
1015         @echo '  external-deps          - list external packages used'
1016         @echo '  legal-info             - generate info about license compliance'
1017         @echo
1018         @echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
1019         @echo '  make O=dir             - Locate all output files in "dir", including .config'
1020         @echo
1021         @echo 'For further details, see README, generate the Buildroot manual, or consult'
1022         @echo 'it on-line at http://buildroot.org/docs.html'
1023         @echo
1024
1025 # List the defconfig files
1026 # $(1): base directory
1027 # $(2): br2-external name, empty for bundled
1028 define list-defconfigs
1029         @first=true; \
1030         for defconfig in $(1)/configs/*_defconfig; do \
1031                 [ -f "$${defconfig}" ] || continue; \
1032                 if $${first}; then \
1033                         if [ "$(2)" ]; then \
1034                                 printf 'External configs in "$(call qstrip,$(2))":\n'; \
1035                         else \
1036                                 printf "Built-in configs:\n"; \
1037                         fi; \
1038                         first=false; \
1039                 fi; \
1040                 defconfig="$${defconfig##*/}"; \
1041                 printf "  %-35s - Build for %s\n" "$${defconfig}" "$${defconfig%_defconfig}"; \
1042         done; \
1043         $${first} || printf "\n"
1044 endef
1045
1046 # We iterate over BR2_EXTERNAL_NAMES rather than BR2_EXTERNAL_DIRS,
1047 # because we want to display the name of the br2-external tree.
1048 list-defconfigs:
1049         $(call list-defconfigs,$(TOPDIR))
1050         $(foreach name,$(BR2_EXTERNAL_NAMES),\
1051                 $(call list-defconfigs,$(BR2_EXTERNAL_$(name)_PATH),\
1052                         $(BR2_EXTERNAL_$(name)_DESC))$(sep))
1053
1054 release: OUT = buildroot-$(BR2_VERSION)
1055
1056 # Create release tarballs. We need to fiddle a bit to add the generated
1057 # documentation to the git output
1058 release:
1059         git archive --format=tar --prefix=$(OUT)/ HEAD > $(OUT).tar
1060         $(MAKE) O=$(OUT) manual-html manual-text manual-pdf
1061         $(MAKE) O=$(OUT) manual-clean
1062         tar rf $(OUT).tar $(OUT)
1063         gzip -9 -c < $(OUT).tar > $(OUT).tar.gz
1064         bzip2 -9 -c < $(OUT).tar > $(OUT).tar.bz2
1065         rm -rf $(OUT) $(OUT).tar
1066
1067 print-version:
1068         @echo $(BR2_VERSION_FULL)
1069
1070 include docs/manual/manual.mk
1071 -include $(foreach dir,$(BR2_EXTERNAL_DIRS),$(dir)/docs/*/*.mk)
1072
1073 .PHONY: $(noconfig_targets)
1074
1075 endif #umask / $(CURDIR) / $(O)