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 := 2016.11-rc1
  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
 326 export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
 327 export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
 328
 329 # Determine the userland we are running on.
 330 #
 331 # Note that, despite its name, we are not interested in the actual
 332 # architecture name. This is mostly used to determine whether some
 333 # of the binary tools (e.g. pre-built external toolchains) can run
 334 # on the current host. So we need to know if the userland we're
 335 # running on can actually run those toolchains.
 336 #
 337 # For example, a 64-bit prebuilt toolchain will not run on a 64-bit
 338 # kernel if the userland is 32-bit (e.g. in a chroot for example).
 339 #
 340 # So, we extract the first part of the tuple the host gcc was
 341 # configured to generate code for; we assume this is our userland.
 342 #
 343 export HOSTARCH := $(shell LC_ALL=C $(HOSTCC_NOCCACHE) -v 2>&1 | \
 344         sed -e '/^Target: \([^-]*\).*/!d' \
 345             -e 's//\1/' \
 346             -e 's/i.86/x86/' \
 347             -e 's/sun4u/sparc64/' \
 348             -e 's/arm.*/arm/' \
 349             -e 's/sa110/arm/' \
 350             -e 's/ppc64/powerpc64/' \
 351             -e 's/ppc/powerpc/' \
 352             -e 's/macppc/powerpc/' \
 353             -e 's/sh.*/sh/' )
 354
 355 HOSTCC_VERSION := $(shell $(HOSTCC_NOCCACHE) --version | \
 356         sed -n -r 's/^.* ([0-9]*)\.([0-9]*)\.([0-9]*)[ ]*.*/\1 \2/p')
 357
 358 # For gcc >= 5.x, we only need the major version.
 359 ifneq ($(firstword $(HOSTCC_VERSION)),4)
 360 HOSTCC_VERSION := $(firstword $(HOSTCC_VERSION))
 361 endif
 362
 363 # Make sure pkg-config doesn't look outside the buildroot tree
 364 HOST_PKG_CONFIG_PATH := $(PKG_CONFIG_PATH)
 365 unexport PKG_CONFIG_PATH
 366 unexport PKG_CONFIG_SYSROOT_DIR
 367 unexport PKG_CONFIG_LIBDIR
 368
 369 # Having DESTDIR set in the environment confuses the installation
 370 # steps of some packages.
 371 unexport DESTDIR
 372
 373 # Causes breakage with packages that needs host-ruby
 374 unexport RUBYOPT
 375
 376 include package/pkg-utils.mk
 377 include package/doc-asciidoc.mk
 378
 379 ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 380
 381 ################################################################################
 382 #
 383 # Hide troublesome environment variables from sub processes
 384 #
 385 ################################################################################
 386 unexport CROSS_COMPILE
 387 unexport ARCH
 388 unexport CC
 389 unexport LD
 390 unexport AR
 391 unexport CXX
 392 unexport CPP
 393 unexport RANLIB
 394 unexport CFLAGS
 395 unexport CXXFLAGS
 396 unexport GREP_OPTIONS
 397 unexport TAR_OPTIONS
 398 unexport CONFIG_SITE
 399 unexport QMAKESPEC
 400 unexport TERMINFO
 401 unexport MACHINE
 402 unexport O
 403
 404 GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)
 405
 406 PACKAGES :=
 407 PACKAGES_ALL :=
 408
 409 # silent mode requested?
 410 QUIET := $(if $(findstring s,$(filter-out --%,$(MAKEFLAGS))),-q)
 411
 412 # Strip off the annoying quoting
 413 ARCH := $(call qstrip,$(BR2_ARCH))
 414
 415 KERNEL_ARCH := $(shell echo "$(ARCH)" | sed -e "s/-.*//" \
 416         -e s/i.86/i386/ -e s/sun4u/sparc64/ \
 417         -e s/arcle/arc/ \
 418         -e s/arceb/arc/ \
 419         -e s/arm.*/arm/ -e s/sa110/arm/ \
 420         -e s/aarch64.*/arm64/ \
 421         -e s/bfin/blackfin/ \
 422         -e s/parisc64/parisc/ \
 423         -e s/powerpc64.*/powerpc/ \
 424         -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 425         -e s/sh.*/sh/ \
 426         -e s/microblazeel/microblaze/)
 427
 428 ZCAT := $(call qstrip,$(BR2_ZCAT))
 429 BZCAT := $(call qstrip,$(BR2_BZCAT))
 430 XZCAT := $(call qstrip,$(BR2_XZCAT))
 431 TAR_OPTIONS = $(call qstrip,$(BR2_TAR_OPTIONS)) -xf
 432
 433 # packages compiled for the host go here
 434 HOST_DIR := $(call qstrip,$(BR2_HOST_DIR))
 435
 436 # Quotes are needed for spaces and all in the original PATH content.
 437 BR_PATH = "$(HOST_DIR)/bin:$(HOST_DIR)/sbin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin:$(PATH)"
 438
 439 # Location of a file giving a big fat warning that output/target
 440 # should not be used as the root filesystem.
 441 TARGET_DIR_WARNING_FILE = $(TARGET_DIR)/THIS_IS_NOT_YOUR_ROOT_FILESYSTEM
 442
 443 ifeq ($(BR2_CCACHE),y)
 444 CCACHE := $(HOST_DIR)/usr/bin/ccache
 445 BR_CACHE_DIR ?= $(call qstrip,$(BR2_CCACHE_DIR))
 446 export BR_CACHE_DIR
 447 HOSTCC := $(CCACHE) $(HOSTCC)
 448 HOSTCXX := $(CCACHE) $(HOSTCXX)
 449 else
 450 export BR_NO_CCACHE
 451 endif
 452
 453 # Scripts in support/ or post-build scripts may need to reference
 454 # these locations, so export them so it is easier to use
 455 export BR2_CONFIG
 456 export BR2_REPRODUCIBLE
 457 export TARGET_DIR
 458 export STAGING_DIR
 459 export HOST_DIR
 460 export BINARIES_DIR
 461 export BASE_DIR
 462
 463 ################################################################################
 464 #
 465 # You should probably leave this stuff alone unless you know
 466 # what you are doing.
 467 #
 468 ################################################################################
 469
 470 all: world
 471
 472 # Include legacy before the other things, because package .mk files
 473 # may rely on it.
 474 include Makefile.legacy
 475
 476 include package/Makefile.in
 477 include support/dependencies/dependencies.mk
 478
 479 include toolchain/*.mk
 480 include toolchain/*/*.mk
 481
 482 # Include the package override file if one has been provided in the
 483 # configuration.
 484 PACKAGE_OVERRIDE_FILE = $(call qstrip,$(BR2_PACKAGE_OVERRIDE_FILE))
 485 ifneq ($(PACKAGE_OVERRIDE_FILE),)
 486 -include $(PACKAGE_OVERRIDE_FILE)
 487 endif
 488
 489 include $(sort $(wildcard package/*/*.mk))
 490
 491 include boot/common.mk
 492 include linux/linux.mk
 493 include fs/common.mk
 494
 495 # If using a br2-external tree, the BR2_EXTERNAL_$(NAME)_PATH variables
 496 # are also present in the .config file. Since .config is included after
 497 # we defined them in the Makefile, the values for those variables are
 498 # quoted. We just include the generated Makefile fragment .br2-external.mk
 499 # a third time, which will set those variables to the un-quoted values.
 500 include $(BR2_EXTERNAL_FILE)
 501
 502 # Nothing to include if no BR2_EXTERNAL tree in use
 503 include $(BR2_EXTERNAL_MKS)
 504
 505 # Now we are sure we have all the packages scanned and defined. We now
 506 # check for each package in the list of enabled packages, that all its
 507 # dependencies are indeed enabled.
 508 #
 509 # Only trigger the check for default builds. If the user forces building
 510 # a package, even if not enabled in the configuration, we want to accept
 511 # it.
 512 #
 513 ifeq ($(MAKECMDGOALS),)
 514
 515 define CHECK_ONE_DEPENDENCY
 516 ifeq ($$($(2)_TYPE),target)
 517 ifeq ($$($(2)_IS_VIRTUAL),)
 518 ifneq ($$($$($(2)_KCONFIG_VAR)),y)
 519 $$(error $$($(2)_NAME) is in the dependency chain of $$($(1)_NAME) that \
 520 has added it to its _DEPENDENCIES variable without selecting it or \
 521 depending on it from Config.in)
 522 endif
 523 endif
 524 endif
 525 endef
 526
 527 $(foreach pkg,$(call UPPERCASE,$(PACKAGES)),\
 528         $(foreach dep,$(call UPPERCASE,$($(pkg)_FINAL_ALL_DEPENDENCIES)),\
 529                 $(eval $(call CHECK_ONE_DEPENDENCY,$(pkg),$(dep))$(sep))))
 530
 531 endif
 532
 533 dirs: $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
 534         $(HOST_DIR) $(BINARIES_DIR)
 535
 536 $(BUILD_DIR)/buildroot-config/auto.conf: $(BR2_CONFIG)
 537         $(MAKE1) $(EXTRAMAKEARGS) HOSTCC="$(HOSTCC_NOCCACHE)" HOSTCXX="$(HOSTCXX_NOCCACHE)" silentoldconfig
 538
 539 prepare: $(BUILD_DIR)/buildroot-config/auto.conf
 540
 541 world: target-post-image
 542
 543 .PHONY: all world toolchain dirs clean distclean source outputmakefile \
 544         legal-info legal-info-prepare legal-info-clean printvars help \
 545         list-defconfigs target-finalize target-post-image source-check
 546
 547 # Populating the staging with the base directories is handled by the skeleton package
 548 $(STAGING_DIR):
 549         @mkdir -p $(STAGING_DIR)
 550         @ln -snf $(STAGING_DIR) $(BASE_DIR)/staging
 551
 552 RSYNC_VCS_EXCLUSIONS = \
 553         --exclude .svn --exclude .git --exclude .hg --exclude .bzr \
 554         --exclude CVS
 555
 556 STRIP_FIND_CMD = find $(TARGET_DIR)
 557 ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
 558 STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
 559 endif
 560 STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
 561 # file exclusions:
 562 # - libpthread.so: a non-stripped libpthread shared library is needed for
 563 #   proper debugging of pthread programs using gdb.
 564 # - ld.so: a non-stripped dynamic linker library is needed for valgrind
 565 # - kernel modules (*.ko): do not function properly when stripped like normal
 566 #   applications and libraries. Normally kernel modules are already excluded
 567 #   by the executable permission check above, so the explicit exclusion is only
 568 #   done for kernel modules with incorrect permissions.
 569 STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* ld-*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
 570
 571 ifeq ($(BR2_ECLIPSE_REGISTER),y)
 572 define TOOLCHAIN_ECLIPSE_REGISTER
 573         ./support/scripts/eclipse-register-toolchain `readlink -f $(O)` \
 574                 $(notdir $(TARGET_CROSS)) $(BR2_ARCH)
 575 endef
 576 TARGET_FINALIZE_HOOKS += TOOLCHAIN_ECLIPSE_REGISTER
 577 endif
 578
 579 # Generate locale data. Basically, we call the localedef program
 580 # (built by the host-localedef package) for each locale. The input
 581 # data comes preferably from the toolchain, or if the toolchain does
 582 # not have them (Linaro toolchains), we use the ones available on the
 583 # host machine.
 584 ifeq ($(BR2_TOOLCHAIN_USES_GLIBC),y)
 585 GLIBC_GENERATE_LOCALES = $(call qstrip,$(BR2_GENERATE_LOCALE))
 586 ifneq ($(GLIBC_GENERATE_LOCALES),)
 587 PACKAGES += host-localedef
 588
 589 define GENERATE_GLIBC_LOCALES
 590         $(Q)mkdir -p $(TARGET_DIR)/usr/lib/locale/
 591         $(Q)for locale in $(GLIBC_GENERATE_LOCALES) ; do \
 592                 inputfile=`echo $${locale} | cut -f1 -d'.'` ; \
 593                 charmap=`echo $${locale} | cut -f2 -d'.' -s` ; \
 594                 if test -z "$${charmap}" ; then \
 595                         charmap="UTF-8" ; \
 596                 fi ; \
 597                 echo "Generating locale $${inputfile}.$${charmap}" ; \
 598                 I18NPATH=$(STAGING_DIR)/usr/share/i18n:/usr/share/i18n \
 599                 $(HOST_DIR)/usr/bin/localedef \
 600                         --prefix=$(TARGET_DIR) \
 601                         --$(call LOWERCASE,$(BR2_ENDIAN))-endian \
 602                         -i $${inputfile} -f $${charmap} \
 603                         $${locale} ; \
 604         done
 605 endef
 606 TARGET_FINALIZE_HOOKS += GENERATE_GLIBC_LOCALES
 607 endif
 608 endif
 609
 610 ifeq ($(BR2_ENABLE_LOCALE_PURGE),y)
 611 LOCALE_WHITELIST = $(BUILD_DIR)/locales.nopurge
 612 LOCALE_NOPURGE = $(call qstrip,$(BR2_ENABLE_LOCALE_WHITELIST))
 613
 614 # This piece of junk does the following:
 615 # First collect the whitelist in a file.
 616 # Then go over all the locale dirs and for each subdir, check if it exists
 617 # in the whitelist file. If it doesn't, kill it.
 618 # Finally, specifically for X11, regenerate locale.dir from the whitelist.
 619 define PURGE_LOCALES
 620         rm -f $(LOCALE_WHITELIST)
 621         for i in $(LOCALE_NOPURGE) locale-archive; do echo $$i >> $(LOCALE_WHITELIST); done
 622
 623         for dir in $(wildcard $(addprefix $(TARGET_DIR),/usr/share/locale /usr/share/X11/locale /usr/lib/locale)); \
 624         do \
 625                 for langdir in $$dir/*; \
 626                 do \
 627                         if [ -e "$${langdir}" ]; \
 628                         then \
 629                                 grep -qx "$${langdir##*/}" $(LOCALE_WHITELIST) || rm -rf $$langdir; \
 630                         fi \
 631                 done; \
 632         done
 633         if [ -d $(TARGET_DIR)/usr/share/X11/locale ]; \
 634         then \
 635                 for lang in $(LOCALE_NOPURGE); \
 636                 do \
 637                         if [ -f $(TARGET_DIR)/usr/share/X11/locale/$$lang/XLC_LOCALE ]; \
 638                         then \
 639                                 echo "$$lang/XLC_LOCALE: $$lang"; \
 640                         fi \
 641                 done > $(TARGET_DIR)/usr/share/X11/locale/locale.dir; \
 642         fi
 643 endef
 644 TARGET_FINALIZE_HOOKS += PURGE_LOCALES
 645 endif
 646
 647 $(TARGETS_ROOTFS): target-finalize
 648
 649 target-finalize: $(PACKAGES)
 650         @$(call MESSAGE,"Finalizing target directory")
 651         $(foreach hook,$(TARGET_FINALIZE_HOOKS),$($(hook))$(sep))
 652         rm -rf $(TARGET_DIR)/usr/include $(TARGET_DIR)/usr/share/aclocal \
 653                 $(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
 654                 $(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
 655         find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
 656         find $(TARGET_DIR)/lib $(TARGET_DIR)/usr/lib $(TARGET_DIR)/usr/libexec \
 657                 \( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
 658 ifneq ($(BR2_PACKAGE_GDB),y)
 659         rm -rf $(TARGET_DIR)/usr/share/gdb
 660 endif
 661 ifneq ($(BR2_PACKAGE_BASH),y)
 662         rm -rf $(TARGET_DIR)/usr/share/bash-completion
 663 endif
 664 ifneq ($(BR2_PACKAGE_ZSH),y)
 665         rm -rf $(TARGET_DIR)/usr/share/zsh
 666 endif
 667         rm -rf $(TARGET_DIR)/usr/man $(TARGET_DIR)/usr/share/man
 668         rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
 669         rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
 670         rm -rf $(TARGET_DIR)/usr/share/gtk-doc
 671         rmdir $(TARGET_DIR)/usr/share 2>/dev/null || true
 672         $(STRIP_FIND_CMD) | xargs -0 $(STRIPCMD) 2>/dev/null || true
 673
 674 # See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
 675 # besides the one in which crash occurred; or SIGTRAP kills my program when
 676 # I set a breakpoint"
 677 ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
 678         find $(TARGET_DIR)/lib -type f -name 'libpthread*.so*' | \
 679                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 680 endif
 681
 682 # Valgrind needs ld.so with enough information, so only strip
 683 # debugging symbols.
 684         find $(TARGET_DIR)/lib -type f -name 'ld-*.so*' | \
 685                 xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
 686         test -f $(TARGET_DIR)/etc/ld.so.conf && \
 687                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf file"; exit 1; } || true
 688         test -d $(TARGET_DIR)/etc/ld.so.conf.d && \
 689                 { echo "ERROR: we shouldn't have a /etc/ld.so.conf.d directory"; exit 1; } || true
 690         mkdir -p $(TARGET_DIR)/etc
 691         ( \
 692                 echo "NAME=Buildroot"; \
 693                 echo "VERSION=$(BR2_VERSION_FULL)"; \
 694                 echo "ID=buildroot"; \
 695                 echo "VERSION_ID=$(BR2_VERSION)"; \
 696                 echo "PRETTY_NAME=\"Buildroot $(BR2_VERSION)\"" \
 697         ) >  $(TARGET_DIR)/etc/os-release
 698
 699         @$(foreach d, $(call qstrip,$(BR2_ROOTFS_OVERLAY)), \
 700                 $(call MESSAGE,"Copying overlay $(d)"); \
 701                 rsync -a --ignore-times --keep-dirlinks $(RSYNC_VCS_EXCLUSIONS) \
 702                         --chmod=u=rwX,go=rX --exclude .empty --exclude '*~' \
 703                         $(d)/ $(TARGET_DIR)$(sep))
 704
 705         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 706                 $(call MESSAGE,"Executing post-build script $(s)"); \
 707                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 708
 709 target-post-image: $(TARGETS_ROOTFS) target-finalize
 710         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_IMAGE_SCRIPT)), \
 711                 $(call MESSAGE,"Executing post-image script $(s)"); \
 712                 $(EXTRA_ENV) $(s) $(BINARIES_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
 713
 714 source: $(foreach p,$(PACKAGES),$(p)-all-source)
 715
 716 _external-deps: $(foreach p,$(PACKAGES),$(p)-all-external-deps)
 717 external-deps:
 718         @$(MAKE1) -Bs $(EXTRAMAKEARGS) _external-deps | sort -u
 719
 720 # check if download URLs are outdated
 721 source-check: $(foreach p,$(PACKAGES),$(p)-all-source-check)
 722
 723 legal-info-clean:
 724         @rm -fr $(LEGAL_INFO_DIR)
 725
 726 legal-info-prepare: $(LEGAL_INFO_DIR)
 727         @$(call MESSAGE,"Collecting legal info")
 728         @$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
 729         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,TARGET)
 730         @$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,HOST)
 731         @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,not saved,HOST)
 732         @$(call legal-warning,the Buildroot source code has not been saved)
 733         @cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
 734
 735 legal-info: dirs legal-info-clean legal-info-prepare $(foreach p,$(PACKAGES),$(p)-all-legal-info) \
 736                 $(REDIST_SOURCES_DIR_TARGET) $(REDIST_SOURCES_DIR_HOST)
 737         @cat support/legal-info/README.header >>$(LEGAL_REPORT)
 738         @if [ -r $(LEGAL_WARNINGS) ]; then \
 739                 cat support/legal-info/README.warnings-header \
 740                         $(LEGAL_WARNINGS) >>$(LEGAL_REPORT); \
 741                 cat $(LEGAL_WARNINGS); fi
 742         @rm -f $(LEGAL_WARNINGS)
 743         @(cd $(LEGAL_INFO_DIR); \
 744                 find * -type f -exec sha256sum {} + | LC_ALL=C sort -k2 \
 745                         >.legal-info.sha256; \
 746                 mv .legal-info.sha256 legal-info.sha256)
 747         @echo "Legal info produced in $(LEGAL_INFO_DIR)"
 748
 749 show-targets:
 750         @echo $(PACKAGES) $(TARGETS_ROOTFS)
 751
 752 graph-build: $(O)/build/build-time.log
 753         @install -d $(GRAPHS_DIR)
 754         $(foreach o,name build duration,./support/scripts/graph-build-time \
 755                                         --type=histogram --order=$(o) --input=$(<) \
 756                                         --output=$(GRAPHS_DIR)/build.hist-$(o).$(BR_GRAPH_OUT) \
 757                                         $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 758         $(foreach t,packages steps,./support/scripts/graph-build-time \
 759                                    --type=pie-$(t) --input=$(<) \
 760                                    --output=$(GRAPHS_DIR)/build.pie-$(t).$(BR_GRAPH_OUT) \
 761                                    $(if $(BR2_GRAPH_ALT),--alternate-colors)$(sep))
 762
 763 graph-depends-requirements:
 764         @dot -? >/dev/null 2>&1 || \
 765                 { echo "ERROR: The 'dot' program from Graphviz is needed for graph-depends" >&2; exit 1; }
 766
 767 graph-depends: graph-depends-requirements
 768         @$(INSTALL) -d $(GRAPHS_DIR)
 769         @cd "$(CONFIG_DIR)"; \
 770         $(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
 771                 --direct -o $(GRAPHS_DIR)/$(@).dot
 772         dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
 773                 -o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
 774                 $(GRAPHS_DIR)/$(@).dot
 775
 776 graph-size:
 777         $(Q)mkdir -p $(GRAPHS_DIR)
 778         $(Q)$(TOPDIR)/support/scripts/size-stats --builddir $(BASE_DIR) \
 779                 --graph $(GRAPHS_DIR)/graph-size.$(BR_GRAPH_OUT) \
 780                 --file-size-csv $(GRAPHS_DIR)/file-size-stats.csv \
 781                 --package-size-csv $(GRAPHS_DIR)/package-size-stats.csv
 782
 783 check-dependencies:
 784         @cd "$(CONFIG_DIR)"; \
 785         $(TOPDIR)/support/scripts/graph-depends -C
 786
 787 else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 788
 789 all: menuconfig
 790
 791 endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)
 792
 793 # configuration
 794 # ---------------------------------------------------------------------------
 795
 796 HOSTCFLAGS = $(CFLAGS_FOR_BUILD)
 797 export HOSTCFLAGS
 798
 799 .PHONY: prepare-kconfig
 800 prepare-kconfig: outputmakefile $(BUILD_DIR)/.br2-external.in
 801
 802 $(BUILD_DIR)/buildroot-config/%onf:
 803         mkdir -p $(@D)/lxdialog
 804         PKG_CONFIG_PATH="$(HOST_PKG_CONFIG_PATH)" $(MAKE) CC="$(HOSTCC_NOCCACHE)" HOSTCC="$(HOSTCC_NOCCACHE)" \
 805             obj=$(@D) -C $(CONFIG) -f Makefile.br $(@F)
 806
 807 DEFCONFIG = $(call qstrip,$(BR2_DEFCONFIG))
 808
 809 # We don't want to fully expand BR2_DEFCONFIG here, so Kconfig will
 810 # recognize that if it's still at its default $(CONFIG_DIR)/defconfig
 811 COMMON_CONFIG_ENV = \
 812         BR2_DEFCONFIG='$(call qstrip,$(value BR2_DEFCONFIG))' \
 813         KCONFIG_AUTOCONFIG=$(BUILD_DIR)/buildroot-config/auto.conf \
 814         KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
 815         KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
 816         BR2_CONFIG=$(BR2_CONFIG) \
 817         HOST_GCC_VERSION="$(HOSTCC_VERSION)" \
 818         BUILD_DIR=$(BUILD_DIR) \
 819         SKIP_LEGACY=
 820
 821 xconfig: $(BUILD_DIR)/buildroot-config/qconf prepare-kconfig
 822         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 823
 824 gconfig: $(BUILD_DIR)/buildroot-config/gconf prepare-kconfig
 825         @$(COMMON_CONFIG_ENV) srctree=$(TOPDIR) $< $(CONFIG_CONFIG_IN)
 826
 827 menuconfig: $(BUILD_DIR)/buildroot-config/mconf prepare-kconfig
 828         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 829
 830 nconfig: $(BUILD_DIR)/buildroot-config/nconf prepare-kconfig
 831         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 832
 833 config: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 834         @$(COMMON_CONFIG_ENV) $< $(CONFIG_CONFIG_IN)
 835
 836 # For the config targets that automatically select options, we pass
 837 # SKIP_LEGACY=y to disable the legacy options. However, in that case
 838 # no values are set for the legacy options so a subsequent oldconfig
 839 # will query them. Therefore, run an additional olddefconfig.
 840
 841 oldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 842         @$(COMMON_CONFIG_ENV) $< --oldconfig $(CONFIG_CONFIG_IN)
 843
 844 randconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 845         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --randconfig $(CONFIG_CONFIG_IN)
 846         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 847
 848 allyesconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 849         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allyesconfig $(CONFIG_CONFIG_IN)
 850         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 851
 852 allnoconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 853         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y $< --allnoconfig $(CONFIG_CONFIG_IN)
 854         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 855
 856 randpackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 857         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 858         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 859                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 860                 $< --randconfig $(CONFIG_CONFIG_IN)
 861         @rm -f $(CONFIG_DIR)/.config.nopkg
 862         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 863
 864 allyespackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 865         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 866         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 867                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 868                 $< --allyesconfig $(CONFIG_CONFIG_IN)
 869         @rm -f $(CONFIG_DIR)/.config.nopkg
 870         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 871
 872 allnopackageconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 873         @grep -v BR2_PACKAGE_ $(BR2_CONFIG) > $(CONFIG_DIR)/.config.nopkg
 874         @$(COMMON_CONFIG_ENV) SKIP_LEGACY=y \
 875                 KCONFIG_ALLCONFIG=$(CONFIG_DIR)/.config.nopkg \
 876                 $< --allnoconfig $(CONFIG_CONFIG_IN)
 877         @rm -f $(CONFIG_DIR)/.config.nopkg
 878         @$(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN) >/dev/null
 879
 880 silentoldconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 881         $(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
 882
 883 olddefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 884         $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
 885
 886 defconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 887         @$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
 888
 889 define percent_defconfig
 890 # Override the BR2_DEFCONFIG from COMMON_CONFIG_ENV with the new defconfig
 891 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(1)/configs/%_defconfig prepare-kconfig
 892         @$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
 893                 $$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
 894 endef
 895 $(eval $(foreach d,$(call reverse,$(TOPDIR) $(BR2_EXTERNAL_DIRS)),$(call percent_defconfig,$(d))$(sep)))
 896
 897 savedefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
 898         @$(COMMON_CONFIG_ENV) $< \
 899                 --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
 900                 $(CONFIG_CONFIG_IN)
 901         @$(SED) '/BR2_DEFCONFIG=/d' $(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig)
 902
 903 .PHONY: defconfig savedefconfig
 904
 905 ################################################################################
 906 #
 907 # Cleanup and misc junk
 908 #
 909 ################################################################################
 910
 911 # outputmakefile generates a Makefile in the output directory, if using a
 912 # separate output directory. This allows convenient use of make in the
 913 # output directory.
 914 outputmakefile:
 915 ifeq ($(NEED_WRAPPER),y)
 916         $(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
 917 endif
 918
 919 # Even though the target is a real file, we mark it as PHONY as we
 920 # want it to be re-generated each time make is invoked, in case the
 921 # value of BR2_EXTERNAL is changed.
 922 .PHONY: $(BUILD_DIR)/.br2-external.in
 923 $(BUILD_DIR)/.br2-external.in: $(BUILD_DIR)
 924         $(Q)support/scripts/br2-external -k -o "$(@)" $(BR2_EXTERNAL)
 925
 926 # printvars prints all the variables currently defined in our
 927 # Makefiles. Alternatively, if a non-empty VARS variable is passed,
 928 # only the variables matching the make pattern passed in VARS are
 929 # displayed.
 930 printvars:
 931         @$(foreach V, \
 932                 $(sort $(if $(VARS),$(filter $(VARS),$(.VARIABLES)),$(.VARIABLES))), \
 933                 $(if $(filter-out environment% default automatic, \
 934                                 $(origin $V)), \
 935                 $(info $V=$($V) ($(value $V)))))
 936
 937 clean:
 938         rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
 939                 $(BUILD_DIR) $(BASE_DIR)/staging \
 940                 $(LEGAL_INFO_DIR) $(GRAPHS_DIR)
 941
 942 distclean: clean
 943 ifeq ($(O),output)
 944         rm -rf $(O)
 945 endif
 946         rm -rf $(TOPDIR)/dl $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
 947                 $(CONFIG_DIR)/.auto.deps $(BR2_EXTERNAL_FILE)
 948
 949 help:
 950         @echo 'Cleaning:'
 951         @echo '  clean                  - delete all files created by build'
 952         @echo '  distclean              - delete all non-source files (including .config)'
 953         @echo
 954         @echo 'Build:'
 955         @echo '  all                    - make world'
 956         @echo '  toolchain              - build toolchain'
 957         @echo
 958         @echo 'Configuration:'
 959         @echo '  menuconfig             - interactive curses-based configurator'
 960         @echo '  nconfig                - interactive ncurses-based configurator'
 961         @echo '  xconfig                - interactive Qt-based configurator'
 962         @echo '  gconfig                - interactive GTK-based configurator'
 963         @echo '  oldconfig              - resolve any unresolved symbols in .config'
 964         @echo '  silentoldconfig        - Same as oldconfig, but quietly, additionally update deps'
 965         @echo '  olddefconfig           - Same as silentoldconfig but sets new symbols to their default value'
 966         @echo '  randconfig             - New config with random answer to all options'
 967         @echo '  defconfig              - New config with default answer to all options'
 968         @echo '                             BR2_DEFCONFIG, if set, is used as input'
 969         @echo '  savedefconfig          - Save current config to BR2_DEFCONFIG (minimal config)'
 970         @echo '  allyesconfig           - New config where all options are accepted with yes'
 971         @echo '  allnoconfig            - New config where all options are answered with no'
 972         @echo '  randpackageconfig      - New config with random answer to package options'
 973         @echo '  allyespackageconfig    - New config where pkg options are accepted with yes'
 974         @echo '  allnopackageconfig     - New config where package options are answered with no'
 975         @echo
 976         @echo 'Package-specific:'
 977         @echo '  <pkg>                  - Build and install <pkg> and all its dependencies'
 978         @echo '  <pkg>-source           - Only download the source files for <pkg>'
 979         @echo '  <pkg>-extract          - Extract <pkg> sources'
 980         @echo '  <pkg>-patch            - Apply patches to <pkg>'
 981         @echo '  <pkg>-depends          - Build <pkg>'\''s dependencies'
 982         @echo '  <pkg>-configure        - Build <pkg> up to the configure step'
 983         @echo '  <pkg>-build            - Build <pkg> up to the build step'
 984         @echo '  <pkg>-show-depends     - List packages on which <pkg> depends'
 985         @echo '  <pkg>-show-rdepends    - List packages which have <pkg> as a dependency'
 986         @echo '  <pkg>-graph-depends    - Generate a graph of <pkg>'\''s dependencies'
 987         @echo '  <pkg>-graph-rdepends   - Generate a graph of <pkg>'\''s reverse dependencies'
 988         @echo '  <pkg>-dirclean         - Remove <pkg> build directory'
 989         @echo '  <pkg>-reconfigure      - Restart the build from the configure step'
 990         @echo '  <pkg>-rebuild          - Restart the build from the build step'
 991         $(foreach p,$(HELP_PACKAGES), \
 992                 @echo $(sep) \
 993                 @echo '$($(p)_NAME):' $(sep) \
 994                 $($(p)_HELP_CMDS)$(sep))
 995         @echo
 996         @echo 'Documentation:'
 997         @echo '  manual                 - build manual in all formats'
 998         @echo '  manual-html            - build manual in HTML'
 999         @echo '  manual-split-html      - build manual in split HTML'
1000         @echo '  manual-pdf             - build manual in PDF'
1001         @echo '  manual-text            - build manual in text'
1002         @echo '  manual-epub            - build manual in ePub'
1003         @echo '  graph-build            - generate graphs of the build times'
1004         @echo '  graph-depends          - generate graph of the dependency tree'
1005         @echo '  graph-size             - generate stats of the filesystem size'
1006         @echo '  list-defconfigs        - list all defconfigs (pre-configured minimal systems)'
1007         @echo
1008         @echo 'Miscellaneous:'
1009         @echo '  source                 - download all sources needed for offline-build'
1010         @echo '  source-check           - check selected packages for valid download URLs'
1011         @echo '  external-deps          - list external packages used'
1012         @echo '  legal-info             - generate info about license compliance'
1013         @echo
1014         @echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
1015         @echo '  make O=dir             - Locate all output files in "dir", including .config'
1016         @echo
1017         @echo 'For further details, see README, generate the Buildroot manual, or consult'
1018         @echo 'it on-line at http://buildroot.org/docs.html'
1019         @echo
1020
1021 # List the defconfig files
1022 # $(1): base directory
1023 # $(2): br2-external name, empty for bundled
1024 define list-defconfigs
1025         @first=true; \
1026         for defconfig in $(1)/configs/*_defconfig; do \
1027                 [ -f "$${defconfig}" ] || continue; \
1028                 if $${first}; then \
1029                         if [ "$(2)" ]; then \
1030                                 printf 'External configs in "$(call qstrip,$(2))":\n'; \
1031                         else \
1032                                 printf "Built-in configs:\n"; \
1033                         fi; \
1034                         first=false; \
1035                 fi; \
1036                 defconfig="$${defconfig##*/}"; \
1037                 printf "  %-35s - Build for %s\n" "$${defconfig}" "$${defconfig%_defconfig}"; \
1038         done; \
1039         $${first} || printf "\n"
1040 endef
1041
1042 # We iterate over BR2_EXTERNAL_NAMES rather than BR2_EXTERNAL_DIRS,
1043 # because we want to display the name of the br2-external tree.
1044 list-defconfigs:
1045         $(call list-defconfigs,$(TOPDIR))
1046         $(foreach name,$(BR2_EXTERNAL_NAMES),\
1047                 $(call list-defconfigs,$(BR2_EXTERNAL_$(name)_PATH),\
1048                         $(BR2_EXTERNAL_$(name)_DESC))$(sep))
1049
1050 release: OUT = buildroot-$(BR2_VERSION)
1051
1052 # Create release tarballs. We need to fiddle a bit to add the generated
1053 # documentation to the git output
1054 release:
1055         git archive --format=tar --prefix=$(OUT)/ HEAD > $(OUT).tar
1056         $(MAKE) O=$(OUT) manual-html manual-text manual-pdf
1057         $(MAKE) O=$(OUT) manual-clean
1058         tar rf $(OUT).tar $(OUT)
1059         gzip -9 -c < $(OUT).tar > $(OUT).tar.gz
1060         bzip2 -9 -c < $(OUT).tar > $(OUT).tar.bz2
1061         rm -rf $(OUT) $(OUT).tar
1062
1063 print-version:
1064         @echo $(BR2_VERSION_FULL)
1065
1066 include docs/manual/manual.mk
1067 -include $(foreach dir,$(BR2_EXTERNAL_DIRS),$(dir)/docs/*/*.mk)
1068
1069 .PHONY: $(noconfig_targets)
1070
1071 endif #umask / $(CURDIR) / $(O)