Makefile

   1 # Makefile for buildroot
   2 #
   3 # Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
   4 # Copyright (C) 2006-2014 by the Buildroot developers <buildroot@uclibc.org>
   5 # Copyright (C) 2014-2016 by the Buildroot developers <buildroot@buildroot.org>
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15 # General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20 #
  21
  22 #--------------------------------------------------------------
  23 # Just run 'make menuconfig', configure stuff, then run 'make'.
  24 # You shouldn't need to mess with anything beyond this point...
  25 #--------------------------------------------------------------
  26
  27 # 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),$(BR2_VERSION_EPOCH))
 257 endif
 258
 259 # To put more focus on warnings, be less verbose as default
 260 # Use 'make V=1' to see the full commands
 261 ifeq ("$(origin V)", "command line")
 262   KBUILD_VERBOSE = $(V)
 263 endif
 264 ifndef KBUILD_VERBOSE
 265   KBUILD_VERBOSE = 0
 266 endif
 267
 268 ifeq ($(KBUILD_VERBOSE),1)
 269   Q =
 270 ifndef VERBOSE
 271   VERBOSE = 1
 272 endif
 273 export VERBOSE
 274 else
 275   Q = @
 276 endif
 277
 278 # kconfig uses CONFIG_SHELL
 279 CONFIG_SHELL := $(SHELL)
 280
 281 export SHELL CONFIG_SHELL Q KBUILD_VERBOSE
 282
 283 ifndef HOSTAR
 284 HOSTAR := ar
 285 endif
 286 ifndef HOSTAS
 287 HOSTAS := as
 288 endif
 289 ifndef HOSTCC
 290 HOSTCC := gcc
 291 HOSTCC := $(shell which $(HOSTCC) || type -p $(HOSTCC) || echo gcc)
 292 endif
 293 HOSTCC_NOCCACHE := $(HOSTCC)
 294 ifndef HOSTCXX
 295 HOSTCXX := g++
 296 HOSTCXX := $(shell which $(HOSTCXX) || type -p $(HOSTCXX) || echo g++)
 297 endif
 298 HOSTCXX_NOCCACHE := $(HOSTCXX)
 299 ifndef HOSTCPP
 300 HOSTCPP := cpp
 301 endif
 302 ifndef HOSTLD
 303 HOSTLD := ld
 304 endif
 305 ifndef HOSTLN
 306 HOSTLN := ln
 307 endif
 308 ifndef HOSTNM
 309 HOSTNM := nm
 310 endif
 311 ifndef HOSTOBJCOPY
 312 HOSTOBJCOPY := objcopy
 313 endif
 314 ifndef HOSTRANLIB
 315 HOSTRANLIB := ranlib
 316 endif
 317 HOSTAR := $(shell which $(HOSTAR) || type -p $(HOSTAR) || echo ar)
 318 HOSTAS := $(shell which $(HOSTAS) || type -p $(HOSTAS) || echo as)
 319 HOSTCPP := $(shell which $(HOSTCPP) || type -p $(HOSTCPP) || echo cpp)
 320 HOSTLD := $(shell which $(HOSTLD) || type -p $(HOSTLD) || echo ld)
 321 HOSTLN := $(shell which $(HOSTLN) || type -p $(HOSTLN) || echo ln)
 322 HOSTNM := $(shell which $(HOSTNM) || type -p $(HOSTNM) || echo nm)
 323 HOSTOBJCOPY := $(shell which $(HOSTOBJCOPY) || type -p $(HOSTOBJCOPY) || echo objcopy)
 324 HOSTRANLIB := $(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranlib)
 325 SED := $(shell which sed || type -p sed) -i -e
 326
 327 export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
 328 export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
 329
 330 # Determine the userland we are running on.
 331 #
 332 # Note that, despite its name, we are not interested in the actual
 333 # architecture name. This is mostly used to determine whether some
 334 # of the binary tools (e.g. pre-built external toolchains) can run
 335 # on the current host. So we need to know if the userland we're
 336 # running on can actually run those toolchains.
 337 #
 338 # For example, a 64-bit prebuilt toolchain will not run on a 64-bit
 339 # kernel if the userland is 32-bit (e.g. in a chroot for example).
 340 #
 341 # So, we extract the first part of the tuple the host gcc was
 342 # configured to generate code for; we assume this is our userland.
 343 #
 344 export HOSTARCH := $(shell LC_ALL=C $(HOSTCC_NOCCACHE) -v 2>&1 | \
 345         sed -e '/^Target: \([^-]*\).*/!d' \
 346             -e 's//\1/' \
 347             -e 's/i.86/x86/' \
 348             -e 's/sun4u/sparc64/' \
 349             -e 's/arm.*/arm/' \
 350             -e 's/sa110/arm/' \
 351             -e 's/ppc64/powerpc64/' \
 352             -e 's/ppc/powerpc/' \
 353             -e 's/macppc/powerpc/' \
 354             -e 's/sh.*/sh/' )
 355
 356 HOSTCC_VERSION := $(shell $(HOSTCC_NOCCACHE) --version | \
 357         sed -n -r 's/^.* ([0-9]*)\.([0-9]*)\.([0-9]*)[ ]*.*/\1 \2/p')
 358
 359 # For gcc >= 5.x, we only need the major version.
 360 ifneq ($(firstword $(HOSTCC_VERSION)),4)
 361 HOSTCC_VERSION := $(firstword $(HOSTCC_VERSION))
 362 endif
 363
 364 # Make sure pkg-config doesn't look outside the buildroot tree
 365 HOST_PKG_CONFIG_PATH := $(PKG_CONFIG_PATH)
 366 unexport PKG_CONFIG_PATH
 367 unexport PKG_CONFIG_SYSROOT_DIR
 368 unexport PKG_CONFIG_LIBDIR
 369
 370 # Having DESTDIR set in the environment confuses the installation
 371 # steps of some packages.
 372 unexport DESTDIR
 373
 374 # Causes breakage with packages that needs host-ruby
 375 unexport RUBYOPT
 376
 377 include package/pkg-utils.mk
 378 include package/doc-asciidoc.mk
 379
 380 ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 381
 382 ################################################################################
 383 #
 384 # Hide troublesome environment variables from sub processes
 385 #
 386 ################################################################################
 387 unexport CROSS_COMPILE
 388 unexport ARCH
 389 unexport CC
 390 unexport LD
 391 unexport AR
 392 unexport CXX
 393 unexport CPP
 394 unexport RANLIB
 395 unexport CFLAGS
 396 unexport CXXFLAGS
 397 unexport GREP_OPTIONS
 398 unexport TAR_OPTIONS
 399 unexport CONFIG_SITE
 400 unexport QMAKESPEC
 401 unexport TERMINFO
 402 unexport MACHINE
 403 unexport O
 404
 405 GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)
 406
 407 PACKAGES :=
 408 PACKAGES_ALL :=
 409
 410 # silent mode requested?
 411 QUIET := $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),-q)
 412
 413 # Strip off the annoying quoting
 414 ARCH := $(call qstrip,$(BR2_ARCH))
 415
 416 KERNEL_ARCH := $(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 417         -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 418         -e s/arcle/arc/ \
 419         -e s/arceb/arc/ \
 420         -e s/arm.*/arm/ -e s/sa110/arm/ \
 421         -e s/aarch64.*/arm64/ \
 422         -e s/bfin/blackfin/ \
 423         -e s/parisc64/parisc/ \
 424         -e s/powerpc64.*/powerpc/ \
 425         -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 426         -e s/sh.*/sh/ \
 427         -e s/microblazeel/microblaze/)
 428
 429 ZCAT := $(call qstrip,$(BR2_ZCAT))
 430 BZCAT := $(call qstrip,$(BR2_BZCAT))
 431 XZCAT := $(call qstrip,$(BR2_XZCAT))
 432 TAR_OPTIONS = $(call qstrip,$(BR2_TAR_OPTIONS)) -xf
 433
 434 # packages compiled for the host go here
 435 HOST_DIR := $(call qstrip,$(BR2_HOST_DIR))
 436
 437 # Quotes are needed for spaces and all in the original PATH content.
 438 BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin:$(PATH)"
 439
 440 # Location of a file giving a big fat warning that output/target
 441 # should not be used as the root filesystem.
 442 TARGET_DIR_WARNING_FILE = $(TARGET_DIR)/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
 443
 444 ifeq ($(BR2_CCACHE),y)
 445 CCACHE := $(HOST_DIR)/usr/bin/ccache
 446 BR_CACHE_DIR ?= $(call qstrip,$(BR2_CCACHE_DIR))
 447 export BR_CACHE_DIR
 448 HOSTCC := $(CCACHE) $(HOSTCC)
 449 HOSTCXX := $(CCACHE) $(HOSTCXX)
 450 else
 451 export BR_NO_CCACHE
 452 endif
 453
 454 # Scripts in support/ or post-build scripts may need to reference
 455 # these locations, so export them so it is easier to use
 456 export BR2_CONFIG
 457 export BR2_REPRODUCIBLE
 458 export TARGET_DIR
 459 export STAGING_DIR
 460 export HOST_DIR
 461 export BINARIES_DIR
 462 export BASE_DIR
 463
 464 ################################################################################
 465 #
 466 # You should probably leave this stuff alone unless you know
 467 # what you are doing.
 468 #
 469 ################################################################################
 470
 471 all: world
 472
 473 # Include legacy before the other things, because package .mk files
 474 # may rely on it.
 475 include Makefile.legacy
 476
 477 include package/Makefile.in
 478 include support/dependencies/dependencies.mk
 479
 480 include toolchain/*.mk
 481 include toolchain/*/*.mk
 482
 483 # Include the package override file if one has been provided in the
 484 # configuration.
 485 PACKAGE_OVERRIDE_FILE = $(call qstrip,$(BR2_PACKAGE_OVERRIDE_FILE))
 486 ifneq ($(PACKAGE_OVERRIDE_FILE),)
 487 -include $(PACKAGE_OVERRIDE_FILE)
 488 endif
 489
 490 include $(sort $(wildcard package/*/*.mk))
 491
 492 include boot/common.mk
 493 include linux/linux.mk
 494 include fs/common.mk
 495
 496 # If using a br2-external tree, the BR2_EXTERNAL_$(NAME)_PATH variables
 497 # are also present in the .config file. Since .config is included after
 498 # we defined them in the Makefile, the values for those variables are
 499 # quoted. We just include the generated Makefile fragment .br2-external.mk
 500 # a third time, which will set those variables to the un-quoted values.
 501 include $(BR2_EXTERNAL_FILE)
 502
 503 # Nothing to include if no BR2_EXTERNAL tree in use
 504 include $(BR2_EXTERNAL_MKS)
 505
 506 # Now we are sure we have all the packages scanned and defined. We now
 507 # check for each package in the list of enabled packages, that all its
 508 # dependencies are indeed enabled.
 509 #
 510 # Only trigger the check for default builds. If the user forces building
 511 # a package, even if not enabled in the configuration, we want to accept
 512 # it.
 513 #
 514 ifeq ($(MAKECMDGOALS),)
 515
 516 define CHECK_ONE_DEPENDENCY
 517 ifeq ($$($(2)_TYPE),target)
 518 ifeq ($$($(2)_IS_VIRTUAL),)
 519 ifneq ($$($$($(2)_KCONFIG_VAR)),y)
 520 $$(error $$($(2)_NAME) is in the dependency chain of $$($(1)_NAME) that \
 521 has added it to its _DEPENDENCIES variable without selecting it or \
 522 depending on it from Config.in)
 523 endif
 524 endif
 525 endif
 526 endef
 527
 528 $(foreach pkg,$(call UPPERCASE,$(PACKAGES)),\
 529         $(foreach dep,$(call UPPERCASE,$($(pkg)_FINAL_ALL_DEPENDENCIES)),\
 530                 $(eval $(call CHECK_ONE_DEPENDENCY,$(pkg),$(dep))$(sep))))
 531
 532 endif
 533
 534 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 535         $(HOST_DIR) $(BINARIES_DIR)
 536
 537 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 538         $(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
 539
 540 prepare: $(BUILD_DIR)/buildroot-config/auto.conf
 541
 542 world: target-post-image
 543
 544 .PHONY: all world toolchain dirs clean distclean source outputmakefile \
 545         legal-info legal-info-prepare legal-info-clean printvars help \
 546         list-defconfigs target-finalize target-post-image source-check
 547
 548 # Populating the staging with the base directories is handled by the skeleton package
 549 $(STAGING_DIR):
 550         @mkdir -p $(STAGING_DIR)
 551         @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging
 552
 553 RSYNC_VCS_EXCLUSIONS = \
 554         --exclude .svn --exclude .git --exclude .hg --exclude .bzr \
 555         --exclude CVS
 556
 557 STRIP_FIND_CMD = find $(TARGET_DIR)
 558 ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
 559 STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
 560 endif
 561 STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
 562 # file exclusions:
 563 # - libpthread.so: a non-stripped libpthread shared library is needed for
 564 #   proper debugging of pthread programs using gdb.
 565 # - ld.so: a non-stripped dynamic linker library is needed for valgrind
 566 # - kernel modules (*.ko): do not function properly when stripped like normal
 567 #   applications and libraries. Normally kernel modules are already excluded
 568 #   by the executable permission check above, so the explicit exclusion is only
 569 #   done for kernel modules with incorrect permissions.
 570 STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* ld-*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
 571
 572 ifeq ($(BR2_ECLIPSE_REGISTER),y)
 573 define TOOLCHAIN_ECLIPSE_REGISTER
 574         ./support/scripts/eclipse-register-toolchain `readlink -f $(O)` \
 575                 $(notdir $(TARGET_CROSS)) $(BR2_ARCH)
 576 endef
 577 TARGET_FINALIZE_HOOKS += TOOLCHAIN_ECLIPSE_REGISTER
 578 endif
 579
 580 # Generate locale data. Basically, we call the localedef program
 581 # (built by the host-localedef package) for each locale. The input
 582 # data comes preferably from the toolchain, or if the toolchain does
 583 # not have them (Linaro toolchains), we use the ones available on the
 584 # host machine.
 585 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 586 GLIBC_GENERATE_LOCALES = $(call qstrip,$(BR2_GENERATE_LOCALE))
 587 ifneq ($(GLIBC_GENERATE_LOCALES),)
 588 PACKAGES += host-localedef
 589
 590 define GENERATE_GLIBC_LOCALES
 591         $(Q)mkdir -p $(TARGET_DIR)/usr/lib/locale/
 592         $(Q)for locale in $(GLIBC_GENERATE_LOCALES) ; do \
 593                 inputfile=`echo $${locale} | cut -f1 -d'.'` ; \
 594                 charmap=`echo $${locale} | cut -f2 -d'.' -s` ; \
 595                 if test -z "$${charmap}" ; then \
 596                         charmap="UTF-8" ; \
 597                 fi ; \
 598                 echo "Generating locale $${inputfile}.$${charmap}" ; \
 599                 I18NPATH=$(STAGING_DIR)/usr/share/i18n:/usr/share/i18n \
 600                 $(HOST_DIR)/usr/bin/localedef \
 601                         --prefix=$(TARGET_DIR) \
 602                         --$(call LOWERCASE,$(BR2_ENDIAN))-endian \
 603                         -i $${inputfile} -f $${charmap} \
 604                         $${locale} ; \
 605         done
 606 endef
 607 TARGET_FINALIZE_HOOKS += GENERATE_GLIBC_LOCALES
 608 endif
 609 endif
 610
 611 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 612 LOCALE_WHITELIST = $(BUILD_DIR)/locales.nopurge
 613 LOCALE_NOPURGE = $(call qstrip,$(BR2_ENABLE_LOCALE_WHITELIST))
 614
 615 # This piece of junk does the following:
 616 # First collect the whitelist in a file.
 617 # Then go over all the locale dirs and for each subdir, check if it exists
 618 # in the whitelist file. If it doesn't, kill it.
 619 # Finally, specifically for X11, regenerate locale.dir from the whitelist.
 620 define PURGE_LOCALES
 621         rm -f $(LOCALE_WHITELIST)
 622         for i in $(LOCALE_NOPURGE) locale-archive; do echo $$i >> $(LOCALE_WHITELIST); done
 623
 624         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/lib/locale)); \
 625         do \
 626                 for langdir in $$dir/*; \
 627                 do \
 628                         if [ -e "$${langdir}" ]; \
 629                         then \
 630                                 grep -qx "$${langdir##*/}" $(LOCALE_WHITELIST) || rm -rf $$langdir; \
 631                         fi \
 632                 done; \
 633         done
 634         if [ -d $(TARGET_DIR)/usr/share/X11/locale ]; \
 635         then \
 636                 for lang in $(LOCALE_NOPURGE); \
 637                 do \
 638                         if [ -f $(TARGET_DIR)/usr/share/X11/locale/$$lang/XLC_LOCALE ]; \
 639                         then \
 640                                 echo "$$lang/XLC_LOCALE: $$lang"; \
 641                         fi \
 642                 done > $(TARGET_DIR)/usr/share/X11/locale/locale.dir; \
 643         fi
 644 endef
 645 TARGET_FINALIZE_HOOKS += PURGE_LOCALES
 646 endif
 647
 648 $(TARGETS_ROOTFS): target-finalize
 649
 650 target-finalize: $(PACKAGES)
 651         @$(call MESSAGE,"Finalizing target directory")
 652         $(foreach hook,$(TARGET_FINALIZE_HOOKS),$($(hook))$(sep))
 653         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/share/aclocal \
 654                 $(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
 655                 $(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
 656         find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
 657         find $(TARGET_DIR)/lib/ $(TARGET_DIR)/usr/lib/ $(TARGET_DIR)/usr/libexec/ \
 658                 \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 659 ifneq ($(BR2_PACKAGE_GDB),y)
 660         rm -rf $(TARGET_DIR)/usr/share/gdb
 661 endif
 662 ifneq ($(BR2_PACKAGE_BASH),y)
 663         rm -rf $(TARGET_DIR)/usr/share/bash-completion
 664 endif
 665 ifneq ($(BR2_PACKAGE_ZSH),y)
 666         rm -rf $(TARGET_DIR)/usr/share/zsh
 667 endif
 668         rm -rf $(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/man
 669         rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
 670         rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
 671         rm -rf $(TARGET_DIR)/usr/share/gtk-doc
 672         rmdir $(TARGET_DIR)/usr/share 2>/dev/null || true
 673         $(STRIP_FIND_CMD) | xargs -0 $(STRIPCMD) 2>/dev/null || true
 674
 675 # See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
 676 # besides the one in which crash occurred; or SIGTRAP kills my program when
 677 # I set a breakpoint"
 678 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 679         find $(TARGET_DIR)/lib/ -type f -name 'libpthread*.so*' | \
 680                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 681 endif
 682
 683 # Valgrind needs ld.so with enough information, so only strip
 684 # debugging symbols.
 685         find $(TARGET_DIR)/lib/ -type f -name 'ld-*.so*' | \
 686                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 687         test -f $(TARGET_DIR)/etc/ld.so.conf && \
 688                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf file"; exit 1; } || true
 689         test -d $(TARGET_DIR)/etc/ld.so.conf.d && \
 690                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf.d directory"; exit 1; } || true
 691         mkdir -p $(TARGET_DIR)/etc
 692         ( \
 693                 echo "NAME=Buildroot"; \
 694                 echo "VERSION=$(BR2_VERSION_FULL)"; \
 695                 echo "ID=buildroot"; \
 696                 echo "VERSION_ID=$(BR2_VERSION)"; \
 697                 echo "PRETTY_NAME=\"Buildroot $(BR2_VERSION)\"" \
 698         ) >  $(TARGET_DIR)/etc/os-release
 699
 700         @$(foreach d, $(call qstrip,$(BR2_ROOTFS_OVERLAY)), \
 701                 $(call MESSAGE,"Copying overlay $(d)"); \
 702                 rsync -a --ignore-times --keep-dirlinks $(RSYNC_VCS_EXCLUSIONS) \
 703                         --chmod=u=rwX,go=rX --exclude .empty --exclude '*~' \
 704                         $(d)/ $(TARGET_DIR)$(sep))
 705
 706         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 707                 $(call MESSAGE,"Executing post-build script $(s)"); \
 708                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 709
 710 target-post-image: $(TARGETS_ROOTFS) target-finalize
 711         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_IMAGE_SCRIPT)), \
 712                 $(call MESSAGE,"Executing post-image script $(s)"); \
 713                 $(EXTRA_ENV) $(s) $(BINARIES_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 714
 715 source: $(foreach p,$(PACKAGES),$(p)-all-source)
 716
 717 _external-deps: $(foreach p,$(PACKAGES),$(p)-all-external-deps)
 718 external-deps:
 719         @$(MAKE1) -Bs $(EXTRAMAKEARGS) _external-deps | sort -u
 720
 721 # check if download URLs are outdated
 722 source-check: $(foreach p,$(PACKAGES),$(p)-all-source-check)
 723
 724 legal-info-clean:
 725         @rm -fr $(LEGAL_INFO_DIR)
 726
 727 legal-info-prepare: $(LEGAL_INFO_DIR)
 728         @$(call MESSAGE,"Collecting legal info")
 729         @$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
 730         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,TARGET)
 731         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,HOST)
 732         @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,not saved,HOST)
 733         @$(call legal-warning,the Buildroot source code has not been saved)
 734         @cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
 735
 736 legal-info: dirs legal-info-clean legal-info-prepare $(foreach p,$(PACKAGES),$(p)-all-legal-info) \
 737                 $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST)
 738         @cat support/legal-info/README.header >>$(LEGAL_REPORT)
 739         @if [ -r $(LEGAL_WARNINGS) ]; then \
 740                 cat support/legal-info/README.warnings-header \
 741                         $(LEGAL_WARNINGS) >>$(LEGAL_REPORT); \
 742                 cat $(LEGAL_WARNINGS); fi
 743         @rm -f $(LEGAL_WARNINGS)
 744         @(cd $(LEGAL_INFO_DIR); \
 745                 find * -type f -exec sha256sum {} + | LC_ALL=C sort -k2 \
 746                         >.legal-info.sha256; \
 747                 mv .legal-info.sha256 legal-info.sha256)
 748         @echo "Legal info produced in $(LEGAL_INFO_DIR)"
 749
 750 show-targets:
 751         @echo $(PACKAGES) $(TARGETS_ROOTFS)
 752
 753 graph-build: $(O)/build/build-time.log
 754         @install -d $(GRAPHS_DIR)
 755         $(foreach o,name build duration,./support/scripts/graph-build-time \
 756                                         --type=histogram --order=$(o) --input=$(<) \
 757                                         --output=$(GRAPHS_DIR)/build.hist-$(o).$(BR_GRAPH_OUT) \
 758                                         $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 759         $(foreach t,packages steps,./support/scripts/graph-build-time \
 760                                    --type=pie-$(t) --input=$(<) \
 761                                    --output=$(GRAPHS_DIR)/build.pie-$(t).$(BR_GRAPH_OUT) \
 762                                    $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 763
 764 graph-depends-requirements:
 765         @dot -? >/dev/null 2>&1 || \
 766                 { echo "ERROR: The 'dot' program from Graphviz is needed for graph-depends" >&2; exit 1; }
 767
 768 graph-depends: graph-depends-requirements
 769         @$(INSTALL) -d $(GRAPHS_DIR)
 770         @cd "$(CONFIG_DIR)"; \
 771         $(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
 772                 --direct -o $(GRAPHS_DIR)/$(@).dot
 773         dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
 774                 -o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
 775                 $(GRAPHS_DIR)/$(@).dot
 776
 777 graph-size:
 778         $(Q)mkdir -p $(GRAPHS_DIR)
 779         $(Q)$(TOPDIR)/support/scripts/size-stats --builddir $(BASE_DIR) \
 780                 --graph $(GRAPHS_DIR)/graph-size.$(BR_GRAPH_OUT) \
 781                 --file-size-csv $(GRAPHS_DIR)/file-size-stats.csv \
 782                 --package-size-csv $(GRAPHS_DIR)/package-size-stats.csv
 783
 784 check-dependencies:
 785         @cd "$(CONFIG_DIR)"; \
 786         $(TOPDIR)/support/scripts/graph-depends -C
 787
 788 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 789
 790 all: menuconfig
 791
 792 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 793
 794 # configuration
 795 # ---------------------------------------------------------------------------
 796
 797 HOSTCFLAGS = $(CFLAGS_FOR_BUILD)
 798 export HOSTCFLAGS
 799
 800 .PHONY: prepare-kconfig
 801 prepare-kconfig: outputmakefile $(BUILD_DIR)/.br2-external.in
 802
 803 $(BUILD_DIR)/buildroot-config/%onf:
 804         mkdir -p $(@D)/lxdialog
 805         PKG_CONFIG_PATH="$(HOST_PKG_CONFIG_PATH)" $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" \
 806             obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
 807
 808 DEFCONFIG = $(call qstrip,$(BR2_DEFCONFIG))
 809
 810 # We don't want to fully expand BR2_DEFCONFIG here, so Kconfig will
 811 # recognize that if it's still at its default $(CONFIG_DIR)/defconfig
 812 COMMON_CONFIG_ENV = \
 813         BR2_DEFCONFIG='$(call qstrip,$(value BR2_DEFCONFIG))' \
 814         KCONFIG_AUTOCONFIG=$(BUILD_DIR)/buildroot-config/auto.conf \
 815         KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
 816         KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
 817         BR2_CONFIG=$(BR2_CONFIG) \
 818         HOST_GCC_VERSION="$(HOSTCC_VERSION)" \
 819         BUILD_DIR=$(BUILD_DIR) \
 820         SKIP_LEGACY=
 821
 822 xconfig: $(BUILD_DIR)/buildroot-config/qconf prepare-kconfig
 823         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 824
 825 gconfig: $(BUILD_DIR)/buildroot-config/gconf prepare-kconfig
 826         @$(COMMON_CONFIG_ENV) srctree=$(TOPDIR) $< $(CONFIG_CONFIG_IN)
 827
 828 menuconfig: $(BUILD_DIR)/buildroot-config/mconf prepare-kconfig
 829         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 830
 831 nconfig: $(BUILD_DIR)/buildroot-config/nconf prepare-kconfig
 832         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 833
 834 config: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 835         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 836
 837 # For the config targets that automatically select options, we pass
 838 # SKIP_LEGACY=y to disable the legacy options. However, in that case
 839 # no values are set for the legacy options so a subsequent oldconfig
 840 # will query them. Therefore, run an additional olddefconfig.
 841
 842 oldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 843         @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)
 844
 845 randconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 846         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --randconfig $(CONFIG_CONFIG_IN)
 847         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 848
 849 allyesconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 850         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allyesconfig $(CONFIG_CONFIG_IN)
 851         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 852
 853 allnoconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 854         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allnoconfig $(CONFIG_CONFIG_IN)
 855         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 856
 857 randpackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 858         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 859         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 860                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 861                 $< --randconfig $(CONFIG_CONFIG_IN)
 862         @rm -f $(CONFIG_DIR)/.config.nopkg
 863         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 864
 865 allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 866         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 867         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 868                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 869                 $< --allyesconfig $(CONFIG_CONFIG_IN)
 870         @rm -f $(CONFIG_DIR)/.config.nopkg
 871         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 872
 873 allnopackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 874         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 875         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 876                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 877                 $< --allnoconfig $(CONFIG_CONFIG_IN)
 878         @rm -f $(CONFIG_DIR)/.config.nopkg
 879         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 880
 881 silentoldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 882         $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
 883
 884 olddefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 885         $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
 886
 887 defconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 888         @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
 889
 890 define percent_defconfig
 891 # Override the BR2_DEFCONFIG from COMMON_CONFIG_ENV with the new defconfig
 892 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(1)/configs/%_defconfig prepare-kconfig
 893         @$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
 894                 $$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
 895 endef
 896 $(eval $(foreach d,$(call reverse,$(TOPDIR) $(BR2_EXTERNAL_DIRS)),$(call percent_defconfig,$(d))$(sep)))
 897
 898 savedefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 899         @$(COMMON_CONFIG_ENV) $< \
 900                 --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
 901                 $(CONFIG_CONFIG_IN)
 902         @$(SED) '/BR2_DEFCONFIG=/d' $(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig)
 903
 904 .PHONY: defconfig savedefconfig
 905
 906 ################################################################################
 907 #
 908 # Cleanup and misc junk
 909 #
 910 ################################################################################
 911
 912 # outputmakefile generates a Makefile in the output directory, if using a
 913 # separate output directory. This allows convenient use of make in the
 914 # output directory.
 915 outputmakefile:
 916 ifeq ($(NEED_WRAPPER),y)
 917         $(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
 918 endif
 919
 920 # Even though the target is a real file, we mark it as PHONY as we
 921 # want it to be re-generated each time make is invoked, in case the
 922 # value of BR2_EXTERNAL is changed.
 923 .PHONY: $(BUILD_DIR)/.br2-external.in
 924 $(BUILD_DIR)/.br2-external.in: $(BUILD_DIR)
 925         $(Q)support/scripts/br2-external -k -o "$(@)" $(BR2_EXTERNAL)
 926
 927 # printvars prints all the variables currently defined in our
 928 # Makefiles. Alternatively, if a non-empty VARS variable is passed,
 929 # only the variables matching the make pattern passed in VARS are
 930 # displayed.
 931 printvars:
 932         @$(foreach V, \
 933                 $(sort $(if $(VARS),$(filter $(VARS),$(.VARIABLES)),$(.VARIABLES))), \
 934                 $(if $(filter-out environment% default automatic, \
 935                                 $(origin $V)), \
 936                 $(info $V=$($V) ($(value $V)))))
 937
 938 clean:
 939         rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
 940                 $(BUILD_DIR) $(BASE_DIR)/staging \
 941                 $(LEGAL_INFO_DIR) $(GRAPHS_DIR)
 942
 943 distclean: clean
 944 ifeq ($(O),$(CURDIR)/output)
 945         rm -rf $(O)
 946 endif
 947         rm -rf $(TOPDIR)/dl $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
 948                 $(CONFIG_DIR)/.auto.deps $(BR2_EXTERNAL_FILE)
 949
 950 help:
 951         @echo 'Cleaning:'
 952         @echo '  clean                  - delete all files created by build'
 953         @echo '  distclean              - delete all non-source files (including .config)'
 954         @echo
 955         @echo 'Build:'
 956         @echo '  all                    - make world'
 957         @echo '  toolchain              - build toolchain'
 958         @echo
 959         @echo 'Configuration:'
 960         @echo '  menuconfig             - interactive curses-based configurator'
 961         @echo '  nconfig                - interactive ncurses-based configurator'
 962         @echo '  xconfig                - interactive Qt-based configurator'
 963         @echo '  gconfig                - interactive GTK-based configurator'
 964         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 965         @echo '  silentoldconfig        - Same as oldconfig, but quietly, additionally update deps'
 966         @echo '  olddefconfig           - Same as silentoldconfig but sets new symbols to their default value'
 967         @echo '  randconfig             - New config with random answer to all options'
 968         @echo '  defconfig              - New config with default answer to all options'
 969         @echo '                             BR2_DEFCONFIG, if set, is used as input'
 970         @echo '  savedefconfig          - Save current config to BR2_DEFCONFIG (minimal config)'
 971         @echo '  allyesconfig           - New config where all options are accepted with yes'
 972         @echo '  allnoconfig            - New config where all options are answered with no'
 973         @echo '  randpackageconfig      - New config with random answer to package options'
 974         @echo '  allyespackageconfig    - New config where pkg options are accepted with yes'
 975         @echo '  allnopackageconfig     - New config where package options are answered with no'
 976         @echo
 977         @echo 'Package-specific:'
 978         @echo '  <pkg>                  - Build and install <pkg> and all its dependencies'
 979         @echo '  <pkg>-source           - Only download the source files for <pkg>'
 980         @echo '  <pkg>-extract          - Extract <pkg> sources'
 981         @echo '  <pkg>-patch            - Apply patches to <pkg>'
 982         @echo '  <pkg>-depends          - Build <pkg>'\''s dependencies'
 983         @echo '  <pkg>-configure        - Build <pkg> up to the configure step'
 984         @echo '  <pkg>-build            - Build <pkg> up to the build step'
 985         @echo '  <pkg>-show-depends     - List packages on which <pkg> depends'
 986         @echo '  <pkg>-show-rdepends    - List packages which have <pkg> as a dependency'
 987         @echo '  <pkg>-graph-depends    - Generate a graph of <pkg>'\''s dependencies'
 988         @echo '  <pkg>-graph-rdepends   - Generate a graph of <pkg>'\''s reverse dependencies'
 989         @echo '  <pkg>-dirclean         - Remove <pkg> build directory'
 990         @echo '  <pkg>-reconfigure      - Restart the build from the configure step'
 991         @echo '  <pkg>-rebuild          - Restart the build from the build step'
 992         $(foreach p,$(HELP_PACKAGES), \
 993                 @echo $(sep) \
 994                 @echo '$($(p)_NAME):' $(sep) \
 995                 $($(p)_HELP_CMDS)$(sep))
 996         @echo
 997         @echo 'Documentation:'
 998         @echo '  manual                 - build manual in all formats'
 999         @echo '  manual-html            - build manual in HTML'
1000         @echo '  manual-split-html      - build manual in split HTML'
1001         @echo '  manual-pdf             - build manual in PDF'
1002         @echo '  manual-text            - build manual in text'
1003         @echo '  manual-epub            - build manual in ePub'
1004         @echo '  graph-build            - generate graphs of the build times'
1005         @echo '  graph-depends          - generate graph of the dependency tree'
1006         @echo '  graph-size             - generate stats of the filesystem size'
1007         @echo '  list-defconfigs        - list all defconfigs (pre-configured minimal systems)'
1008         @echo
1009         @echo 'Miscellaneous:'
1010         @echo '  source                 - download all sources needed for offline-build'
1011         @echo '  source-check           - check selected packages for valid download URLs'
1012         @echo '  external-deps          - list external packages used'
1013         @echo '  legal-info             - generate info about license compliance'
1014         @echo
1015         @echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
1016         @echo '  make O=dir             - Locate all output files in "dir", including .config'
1017         @echo
1018         @echo 'For further details, see README, generate the Buildroot manual, or consult'
1019         @echo 'it on-line at http://buildroot.org/docs.html'
1020         @echo
1021
1022 # List the defconfig files
1023 # $(1): base directory
1024 # $(2): br2-external name, empty for bundled
1025 define list-defconfigs
1026         @first=true; \
1027         for defconfig in $(1)/configs/*_defconfig; do \
1028                 [ -f "$${defconfig}" ] || continue; \
1029                 if $${first}; then \
1030                         if [ "$(2)" ]; then \
1031                                 printf 'External configs in "$(call qstrip,$(2))":\n'; \
1032                         else \
1033                                 printf "Built-in configs:\n"; \
1034                         fi; \
1035                         first=false; \
1036                 fi; \
1037                 defconfig="$${defconfig##*/}"; \
1038                 printf "  %-35s - Build for %s\n" "$${defconfig}" "$${defconfig%_defconfig}"; \
1039         done; \
1040         $${first} || printf "\n"
1041 endef
1042
1043 # We iterate over BR2_EXTERNAL_NAMES rather than BR2_EXTERNAL_DIRS,
1044 # because we want to display the name of the br2-external tree.
1045 list-defconfigs:
1046         $(call list-defconfigs,$(TOPDIR))
1047         $(foreach name,$(BR2_EXTERNAL_NAMES),\
1048                 $(call list-defconfigs,$(BR2_EXTERNAL_$(name)_PATH),\
1049                         $(BR2_EXTERNAL_$(name)_DESC))$(sep))
1050
1051 release: OUT = buildroot-$(BR2_VERSION)
1052
1053 # Create release tarballs. We need to fiddle a bit to add the generated
1054 # documentation to the git output
1055 release:
1056         git archive --format=tar --prefix=$(OUT)/ HEAD > $(OUT).tar
1057         $(MAKE) O=$(OUT) manual-html manual-text manual-pdf
1058         $(MAKE) O=$(OUT) manual-clean
1059         tar rf $(OUT).tar $(OUT)
1060         gzip -9 -c < $(OUT).tar > $(OUT).tar.gz
1061         bzip2 -9 -c < $(OUT).tar > $(OUT).tar.bz2
1062         rm -rf $(OUT) $(OUT).tar
1063
1064 print-version:
1065         @echo $(BR2_VERSION_FULL)
1066
1067 include docs/manual/manual.mk
1068 -include $(foreach dir,$(BR2_EXTERNAL_DIRS),$(dir)/docs/*/*.mk)
1069
1070 .PHONY: $(noconfig_targets)
1071
1072 endif #umask / $(CURDIR) / $(O)