Makefile

   1 VERSION = 2015
   2 PATCHLEVEL = 04
   3 SUBLEVEL =
   4 EXTRAVERSION = -rc5
   5 NAME =
   6
   7 # *DOCUMENTATION*
   8 # To see a list of typical targets execute "make help"
   9 # More info can be located in ./README
  10 # Comments in this file are targeted only to the developer, do not
  11 # expect to learn how to build the kernel reading this file.
  12
  13 # Do not use make's built-in rules and variables
  14 # (this increases performance and avoids hard-to-debug behaviour);
  15 MAKEFLAGS += -rR
  16
  17 # Avoid funny character set dependencies
  18 unexport LC_ALL
  19 LC_COLLATE=C
  20 LC_NUMERIC=C
  21 export LC_COLLATE LC_NUMERIC
  22
  23 # Avoid interference with shell env settings
  24 unexport GREP_OPTIONS
  25
  26 # We are using a recursive build, so we need to do a little thinking
  27 # to get the ordering right.
  28 #
  29 # Most importantly: sub-Makefiles should only ever modify files in
  30 # their own directory. If in some directory we have a dependency on
  31 # a file in another dir (which doesn't happen often, but it's often
  32 # unavoidable when linking the built-in.o targets which finally
  33 # turn into vmlinux), we will call a sub make in that other dir, and
  34 # after that we are sure that everything which is in that other dir
  35 # is now up to date.
  36 #
  37 # The only cases where we need to modify files which have global
  38 # effects are thus separated out and done before the recursive
  39 # descending is started. They are now explicitly listed as the
  40 # prepare rule.
  41
  42 # Beautify output
  43 # ---------------------------------------------------------------------------
  44 #
  45 # Normally, we echo the whole command before executing it. By making
  46 # that echo $($(quiet)$(cmd)), we now have the possibility to set
  47 # $(quiet) to choose other forms of output instead, e.g.
  48 #
  49 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  50 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  51 #
  52 # If $(quiet) is empty, the whole command will be printed.
  53 # If it is set to "quiet_", only the short version will be printed.
  54 # If it is set to "silent_", nothing will be printed at all, since
  55 # the variable $(silent_cmd_cc_o_c) doesn't exist.
  56 #
  57 # A simple variant is to prefix commands with $(Q) - that's useful
  58 # for commands that shall be hidden in non-verbose mode.
  59 #
  60 #       $(Q)ln $@ :<
  61 #
  62 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  63 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  64 #
  65 # To put more focus on warnings, be less verbose as default
  66 # Use 'make V=1' to see the full commands
  67
  68 ifeq ("$(origin V)", "command line")
  69   KBUILD_VERBOSE = $(V)
  70 endif
  71 ifndef KBUILD_VERBOSE
  72   KBUILD_VERBOSE = 0
  73 endif
  74
  75 ifeq ($(KBUILD_VERBOSE),1)
  76   quiet =
  77   Q =
  78 else
  79   quiet=quiet_
  80   Q = @
  81 endif
  82
  83 # If the user is running make -s (silent mode), suppress echoing of
  84 # commands
  85
  86 ifneq ($(filter 4.%,$(MAKE_VERSION)),)  # make-4
  87 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
  88   quiet=silent_
  89 endif
  90 else                                    # make-3.8x
  91 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
  92   quiet=silent_
  93 endif
  94 endif
  95
  96 export quiet Q KBUILD_VERBOSE
  97
  98 # kbuild supports saving output files in a separate directory.
  99 # To locate output files in a separate directory two syntaxes are supported.
 100 # In both cases the working directory must be the root of the kernel src.
 101 # 1) O=
 102 # Use "make O=dir/to/store/output/files/"
 103 #
 104 # 2) Set KBUILD_OUTPUT
 105 # Set the environment variable KBUILD_OUTPUT to point to the directory
 106 # where the output files shall be placed.
 107 # export KBUILD_OUTPUT=dir/to/store/output/files/
 108 # make
 109 #
 110 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
 111 # variable.
 112
 113 # KBUILD_SRC is set on invocation of make in OBJ directory
 114 # KBUILD_SRC is not intended to be used by the regular user (for now)
 115 ifeq ($(KBUILD_SRC),)
 116
 117 # OK, Make called in directory where kernel src resides
 118 # Do we want to locate output files in a separate directory?
 119 ifeq ("$(origin O)", "command line")
 120   KBUILD_OUTPUT := $(O)
 121 endif
 122
 123 # That's our default target when none is given on the command line
 124 PHONY := _all
 125 _all:
 126
 127 # Cancel implicit rules on top Makefile
 128 $(CURDIR)/Makefile Makefile: ;
 129
 130 ifneq ($(KBUILD_OUTPUT),)
 131 # Invoke a second make in the output directory, passing relevant variables
 132 # check that the output directory actually exists
 133 saved-output := $(KBUILD_OUTPUT)
 134 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
 135                                                                 && /bin/pwd)
 136 $(if $(KBUILD_OUTPUT),, \
 137      $(error failed to create output directory "$(saved-output)"))
 138
 139 PHONY += $(MAKECMDGOALS) sub-make
 140
 141 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 142         @:
 143
 144 sub-make: FORCE
 145         $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
 146         -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
 147
 148 # Leave processing to above invocation of make
 149 skip-makefile := 1
 150 endif # ifneq ($(KBUILD_OUTPUT),)
 151 endif # ifeq ($(KBUILD_SRC),)
 152
 153 # We process the rest of the Makefile if this is the final invocation of make
 154 ifeq ($(skip-makefile),)
 155
 156 # Do not print "Entering directory ...",
 157 # but we want to display it when entering to the output directory
 158 # so that IDEs/editors are able to understand relative filenames.
 159 MAKEFLAGS += --no-print-directory
 160
 161 # Call a source code checker (by default, "sparse") as part of the
 162 # C compilation.
 163 #
 164 # Use 'make C=1' to enable checking of only re-compiled files.
 165 # Use 'make C=2' to enable checking of *all* source files, regardless
 166 # of whether they are re-compiled or not.
 167 #
 168 # See the file "Documentation/sparse.txt" for more details, including
 169 # where to get the "sparse" utility.
 170
 171 ifeq ("$(origin C)", "command line")
 172   KBUILD_CHECKSRC = $(C)
 173 endif
 174 ifndef KBUILD_CHECKSRC
 175   KBUILD_CHECKSRC = 0
 176 endif
 177
 178 # Use make M=dir to specify directory of external module to build
 179 # Old syntax make ... SUBDIRS=$PWD is still supported
 180 # Setting the environment variable KBUILD_EXTMOD take precedence
 181 ifdef SUBDIRS
 182   KBUILD_EXTMOD ?= $(SUBDIRS)
 183 endif
 184
 185 ifeq ("$(origin M)", "command line")
 186   KBUILD_EXTMOD := $(M)
 187 endif
 188
 189 # If building an external module we do not care about the all: rule
 190 # but instead _all depend on modules
 191 PHONY += all
 192 ifeq ($(KBUILD_EXTMOD),)
 193 _all: all
 194 else
 195 _all: modules
 196 endif
 197
 198 ifeq ($(KBUILD_SRC),)
 199         # building in the source tree
 200         srctree := .
 201 else
 202         ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
 203                 # building in a subdirectory of the source tree
 204                 srctree := ..
 205         else
 206                 srctree := $(KBUILD_SRC)
 207         endif
 208 endif
 209 objtree         := .
 210 src             := $(srctree)
 211 obj             := $(objtree)
 212
 213 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 214
 215 export srctree objtree VPATH
 216
 217 # Make sure CDPATH settings don't interfere
 218 unexport CDPATH
 219
 220 #########################################################################
 221
 222 HOSTARCH := $(shell uname -m | \
 223         sed -e s/i.86/x86/ \
 224             -e s/sun4u/sparc64/ \
 225             -e s/arm.*/arm/ \
 226             -e s/sa110/arm/ \
 227             -e s/ppc64/powerpc/ \
 228             -e s/ppc/powerpc/ \
 229             -e s/macppc/powerpc/\
 230             -e s/sh.*/sh/)
 231
 232 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 233             sed -e 's/\(cygwin\).*/cygwin/')
 234
 235 export  HOSTARCH HOSTOS
 236
 237 #########################################################################
 238
 239 # set default to nothing for native builds
 240 ifeq ($(HOSTARCH),$(ARCH))
 241 CROSS_COMPILE ?=
 242 endif
 243
 244 KCONFIG_CONFIG  ?= .config
 245 export KCONFIG_CONFIG
 246
 247 # SHELL used by kbuild
 248 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 249           else if [ -x /bin/bash ]; then echo /bin/bash; \
 250           else echo sh; fi ; fi)
 251
 252 HOSTCC       = cc
 253 HOSTCXX      = c++
 254 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 255 HOSTCXXFLAGS = -O2
 256
 257 ifeq ($(HOSTOS),cygwin)
 258 HOSTCFLAGS      += -ansi
 259 endif
 260
 261 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 262 # generates numerous errors and warnings.  We want to bypass it
 263 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 264 # option to the compiler.  Note that the -traditional-cpp flag
 265 # DOES NOT have the same semantics as GNU C's flag, all it does
 266 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 267 #
 268 # Apple's linker is similar, thanks to the new 2 stage linking
 269 # multiple symbol definitions are treated as errors, hence the
 270 # -multiply_defined suppress option to turn off this error.
 271 #
 272 ifeq ($(HOSTOS),darwin)
 273 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 274 DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 275 DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 276
 277 os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 278         $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 279
 280 # Snow Leopards build environment has no longer restrictions as described above
 281 HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 282 HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 283 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 284
 285 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
 286 # in some host tools which is a problem then ... so disable ASLR for these
 287 # tools
 288 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
 289 endif
 290
 291 # Decide whether to build built-in, modular, or both.
 292 # Normally, just do built-in.
 293
 294 KBUILD_MODULES :=
 295 KBUILD_BUILTIN := 1
 296
 297 # If we have only "make modules", don't compile built-in objects.
 298 # When we're building modules with modversions, we need to consider
 299 # the built-in objects during the descend as well, in order to
 300 # make sure the checksums are up to date before we record them.
 301
 302 ifeq ($(MAKECMDGOALS),modules)
 303   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 304 endif
 305
 306 # If we have "make <whatever> modules", compile modules
 307 # in addition to whatever we do anyway.
 308 # Just "make" or "make all" shall build modules as well
 309
 310 # U-Boot does not need modules
 311 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 312 #  KBUILD_MODULES := 1
 313 #endif
 314
 315 #ifeq ($(MAKECMDGOALS),)
 316 #  KBUILD_MODULES := 1
 317 #endif
 318
 319 export KBUILD_MODULES KBUILD_BUILTIN
 320 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 321
 322 # Look for make include files relative to root of kernel src
 323 MAKEFLAGS += --include-dir=$(srctree)
 324
 325 # We need some generic definitions (do not try to remake the file).
 326 $(srctree)/scripts/Kbuild.include: ;
 327 include $(srctree)/scripts/Kbuild.include
 328
 329 # Make variables (CC, etc...)
 330
 331 AS              = $(CROSS_COMPILE)as
 332 # Always use GNU ld
 333 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 334 LD              = $(CROSS_COMPILE)ld.bfd
 335 else
 336 LD              = $(CROSS_COMPILE)ld
 337 endif
 338 CC              = $(CROSS_COMPILE)gcc
 339 CPP             = $(CC) -E
 340 AR              = $(CROSS_COMPILE)ar
 341 NM              = $(CROSS_COMPILE)nm
 342 LDR             = $(CROSS_COMPILE)ldr
 343 STRIP           = $(CROSS_COMPILE)strip
 344 OBJCOPY         = $(CROSS_COMPILE)objcopy
 345 OBJDUMP         = $(CROSS_COMPILE)objdump
 346 AWK             = awk
 347 PERL            = perl
 348 PYTHON          = python
 349 DTC             = dtc
 350 CHECK           = sparse
 351
 352 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 353                   -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 354
 355 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 356
 357 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 358                    -Wno-format-security \
 359                    -fno-builtin -ffreestanding
 360 KBUILD_AFLAGS   := -D__ASSEMBLY__
 361
 362 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 363 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 364 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 365
 366 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 367 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
 368 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
 369 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
 370 export MAKE AWK PERL PYTHON
 371 export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
 372
 373 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
 374 export KBUILD_CFLAGS KBUILD_AFLAGS
 375
 376 # When compiling out-of-tree modules, put MODVERDIR in the module
 377 # tree rather than in the kernel tree. The kernel tree might
 378 # even be read-only.
 379 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 380
 381 # Files to ignore in find ... statements
 382
 383 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
 384                           -name CVS -o -name .pc -o -name .hg -o -name .git \) \
 385                           -prune -o
 386 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 387                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
 388
 389 # ===========================================================================
 390 # Rules shared between *config targets and build targets
 391
 392 # Basic helpers built in scripts/
 393 PHONY += scripts_basic
 394 scripts_basic:
 395         $(Q)$(MAKE) $(build)=scripts/basic
 396         $(Q)rm -f .tmp_quiet_recordmcount
 397
 398 # To avoid any implicit rule to kick in, define an empty command.
 399 scripts/basic/%: scripts_basic ;
 400
 401 PHONY += outputmakefile
 402 # outputmakefile generates a Makefile in the output directory, if using a
 403 # separate output directory. This allows convenient use of make in the
 404 # output directory.
 405 outputmakefile:
 406 ifneq ($(KBUILD_SRC),)
 407         $(Q)ln -fsn $(srctree) source
 408         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 409             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 410 endif
 411
 412 # To make sure we do not include .config for any of the *config targets
 413 # catch them early, and hand them over to scripts/kconfig/Makefile
 414 # It is allowed to specify more targets when calling make, including
 415 # mixing *config targets and build targets.
 416 # For example 'make oldconfig all'.
 417 # Detect when mixed targets is specified, and make a second invocation
 418 # of make so .config is not included in this case either (for *config).
 419
 420 version_h := include/generated/version_autogenerated.h
 421 timestamp_h := include/generated/timestamp_autogenerated.h
 422
 423 no-dot-config-targets := clean clobber mrproper distclean \
 424                          help %docs check% coccicheck \
 425                          ubootversion backup
 426
 427 config-targets := 0
 428 mixed-targets  := 0
 429 dot-config     := 1
 430
 431 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 432         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 433                 dot-config := 0
 434         endif
 435 endif
 436
 437 ifeq ($(KBUILD_EXTMOD),)
 438         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 439                 config-targets := 1
 440                 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
 441                         mixed-targets := 1
 442                 endif
 443         endif
 444 endif
 445
 446 ifeq ($(mixed-targets),1)
 447 # ===========================================================================
 448 # We're called with mixed targets (*config and build targets).
 449 # Handle them one by one.
 450
 451 PHONY += $(MAKECMDGOALS) __build_one_by_one
 452
 453 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
 454         @:
 455
 456 __build_one_by_one:
 457         $(Q)set -e; \
 458         for i in $(MAKECMDGOALS); do \
 459                 $(MAKE) -f $(srctree)/Makefile $$i; \
 460         done
 461
 462 else
 463 ifeq ($(config-targets),1)
 464 # ===========================================================================
 465 # *config targets only - make sure prerequisites are updated, and descend
 466 # in scripts/kconfig to make the *config target
 467
 468 KBUILD_DEFCONFIG := sandbox_defconfig
 469 export KBUILD_DEFCONFIG KBUILD_KCONFIG
 470
 471 config: scripts_basic outputmakefile FORCE
 472         $(Q)$(MAKE) $(build)=scripts/kconfig $@
 473
 474 %config: scripts_basic outputmakefile FORCE
 475         $(Q)$(MAKE) $(build)=scripts/kconfig $@
 476
 477 else
 478 # ===========================================================================
 479 # Build targets only - this includes vmlinux, arch specific targets, clean
 480 # targets and others. In general all targets except *config targets.
 481
 482 ifeq ($(dot-config),1)
 483 # Read in config
 484 -include include/config/auto.conf
 485
 486 # Read in dependencies to all Kconfig* files, make sure to run
 487 # oldconfig if changes are detected.
 488 -include include/config/auto.conf.cmd
 489
 490 # To avoid any implicit rule to kick in, define an empty command
 491 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
 492
 493 # If .config is newer than include/config/auto.conf, someone tinkered
 494 # with it and forgot to run make oldconfig.
 495 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
 496 # we execute the config step to be sure to catch updated Kconfig files
 497 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
 498         $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
 499         @# If the following part fails, include/config/auto.conf should be
 500         @# deleted so "make silentoldconfig" will be re-run on the next build.
 501         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
 502                 { rm -f include/config/auto.conf; false; }
 503         @# include/config.h has been updated after "make silentoldconfig".
 504         @# We need to touch include/config/auto.conf so it gets newer
 505         @# than include/config.h.
 506         @# Otherwise, 'make silentoldconfig' would be invoked twice.
 507         $(Q)touch include/config/auto.conf
 508
 509 -include include/autoconf.mk
 510 -include include/autoconf.mk.dep
 511
 512 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
 513 # is up-to-date. When we switch to a different board configuration, old CONFIG
 514 # macros are still remaining in include/config/auto.conf. Without the following
 515 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
 516 autoconf_is_current := $(if $(wildcard $(KCONFIG_CONFIG)),$(shell find . \
 517                 -path ./include/config/auto.conf -newer $(KCONFIG_CONFIG)))
 518 ifneq ($(autoconf_is_current),)
 519 include $(srctree)/config.mk
 520 include $(srctree)/arch/$(ARCH)/Makefile
 521 endif
 522
 523 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 524 # that (or fail if absent).  Otherwise, search for a linker script in a
 525 # standard location.
 526
 527 ifndef LDSCRIPT
 528         #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
 529         ifdef CONFIG_SYS_LDSCRIPT
 530                 # need to strip off double quotes
 531                 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 532         endif
 533 endif
 534
 535 # If there is no specified link script, we look in a number of places for it
 536 ifndef LDSCRIPT
 537         ifeq ($(wildcard $(LDSCRIPT)),)
 538                 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 539         endif
 540         ifeq ($(wildcard $(LDSCRIPT)),)
 541                 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 542         endif
 543         ifeq ($(wildcard $(LDSCRIPT)),)
 544                 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
 545         endif
 546 endif
 547
 548 else
 549 # Dummy target needed, because used as prerequisite
 550 include/config/auto.conf: ;
 551 endif # $(dot-config)
 552
 553 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 554 KBUILD_CFLAGS   += -Os
 555 else
 556 KBUILD_CFLAGS   += -O2
 557 endif
 558
 559 ifdef BUILD_TAG
 560 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 561 endif
 562
 563 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 564
 565 KBUILD_CFLAGS   += -g
 566 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 567 # option to the assembler.
 568 KBUILD_AFLAGS   += -g
 569
 570 # Report stack usage if supported
 571 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 572         KBUILD_CFLAGS += -fstack-usage
 573 endif
 574
 575 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 576
 577 # turn jbsr into jsr for m68k
 578 ifeq ($(ARCH),m68k)
 579 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 580 KBUILD_AFLAGS += -Wa,-gstabs,-S
 581 endif
 582 endif
 583
 584 # Prohibit date/time macros, which would make the build non-deterministic
 585 KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
 586
 587 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 588 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
 589 endif
 590
 591 export CONFIG_SYS_TEXT_BASE
 592
 593 include $(srctree)/scripts/Makefile.extrawarn
 594
 595 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 596 KBUILD_CPPFLAGS += $(KCPPFLAGS)
 597 KBUILD_AFLAGS += $(KAFLAGS)
 598 KBUILD_CFLAGS += $(KCFLAGS)
 599
 600 # Use UBOOTINCLUDE when you must reference the include/ directory.
 601 # Needed to be compatible with the O= option
 602 UBOOTINCLUDE    := \
 603                 -Iinclude \
 604                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
 605                 -I$(srctree)/arch/$(ARCH)/include \
 606                 -include $(srctree)/include/linux/kconfig.h
 607
 608 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 609 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 610
 611 # FIX ME
 612 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 613                                                         $(NOSTDINC_FLAGS)
 614 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 615
 616 #########################################################################
 617 # U-Boot objects....order is important (i.e. start must be first)
 618
 619 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 620
 621 libs-y += lib/
 622 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 623 libs-$(CONFIG_OF_EMBED) += dts/
 624 libs-y += fs/
 625 libs-y += net/
 626 libs-y += disk/
 627 libs-y += drivers/
 628 libs-y += drivers/dma/
 629 libs-y += drivers/gpio/
 630 libs-y += drivers/i2c/
 631 libs-y += drivers/mmc/
 632 libs-y += drivers/mtd/
 633 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 634 libs-y += drivers/mtd/onenand/
 635 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 636 libs-y += drivers/mtd/spi/
 637 libs-y += drivers/net/
 638 libs-y += drivers/net/phy/
 639 libs-y += drivers/pci/
 640 libs-y += drivers/power/ \
 641         drivers/power/fuel_gauge/ \
 642         drivers/power/mfd/ \
 643         drivers/power/pmic/ \
 644         drivers/power/battery/
 645 libs-y += drivers/spi/
 646 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 647 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 648 libs-y += drivers/serial/
 649 libs-y += drivers/usb/eth/
 650 libs-y += drivers/usb/gadget/
 651 libs-y += drivers/usb/host/
 652 libs-y += drivers/usb/musb/
 653 libs-y += drivers/usb/musb-new/
 654 libs-y += drivers/usb/phy/
 655 libs-y += drivers/usb/ulpi/
 656 libs-y += common/
 657 libs-$(CONFIG_API) += api/
 658 libs-$(CONFIG_HAS_POST) += post/
 659 libs-y += test/
 660 libs-y += test/dm/
 661
 662 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 663
 664 libs-y := $(sort $(libs-y))
 665
 666 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 667
 668 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 669
 670 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 671
 672 u-boot-init := $(head-y)
 673 u-boot-main := $(libs-y)
 674
 675
 676 # Add GCC lib
 677 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 678 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 679 else
 680 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 681 endif
 682 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 683 export PLATFORM_LIBS
 684 export PLATFORM_LIBGCC
 685
 686 # Special flags for CPP when processing the linker script.
 687 # Pass the version down so we can handle backwards compatibility
 688 # on the fly.
 689 LDPPFLAGS += \
 690         -include $(srctree)/include/u-boot/u-boot.lds.h \
 691         -DCPUDIR=$(CPUDIR) \
 692         $(shell $(LD) --version | \
 693           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 694
 695 #########################################################################
 696 #########################################################################
 697
 698 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 699 BOARD_SIZE_CHECK = \
 700         @actual=`wc -c $@ | awk '{print $$1}'`; \
 701         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 702         if test $$actual -gt $$limit; then \
 703                 echo "$@ exceeds file size limit:" >&2 ; \
 704                 echo "  limit:  $$limit bytes" >&2 ; \
 705                 echo "  actual: $$actual bytes" >&2 ; \
 706                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 707                 exit 1; \
 708         fi
 709 else
 710 BOARD_SIZE_CHECK =
 711 endif
 712
 713 # Statically apply RELA-style relocations (currently arm64 only)
 714 ifneq ($(CONFIG_STATIC_RELA),)
 715 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 716 DO_STATIC_RELA = \
 717         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 718         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 719         tools/relocate-rela $(2) $(3) $$start $$end
 720 else
 721 DO_STATIC_RELA =
 722 endif
 723
 724 # Always append ALL so that arch config.mk's can add custom ones
 725 ALL-y += u-boot.srec u-boot.bin System.map binary_size_check
 726
 727 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 728 ifeq ($(CONFIG_SPL_FSL_PBL),y)
 729 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
 730 else
 731 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 732 endif
 733 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 734 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 735 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 736 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
 737 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
 738 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
 739 endif
 740 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 741 ifneq ($(CONFIG_SPL_TARGET),)
 742 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 743 endif
 744 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 745
 746 ifneq ($(BUILD_ROM),)
 747 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
 748 endif
 749
 750 # enable combined SPL/u-boot/dtb rules for tegra
 751 ifneq ($(CONFIG_TEGRA),)
 752 ifeq ($(CONFIG_SPL),y)
 753 ifeq ($(CONFIG_OF_SEPARATE),y)
 754 ALL-y += u-boot-dtb-tegra.bin
 755 else
 756 ALL-y += u-boot-nodtb-tegra.bin
 757 endif
 758 endif
 759 endif
 760
 761 # Add optional build target if defined in board/cpu/soc headers
 762 ifneq ($(CONFIG_BUILD_TARGET),)
 763 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
 764 endif
 765
 766 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 767 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 768 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 769 endif
 770
 771 quiet_cmd_objcopy = OBJCOPY $@
 772 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 773
 774 quiet_cmd_mkimage = MKIMAGE $@
 775 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 776         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 777
 778 quiet_cmd_cat = CAT     $@
 779 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 780
 781 append = cat $(filter-out $< $(PHONY), $^) >> $@
 782
 783 quiet_cmd_pad_cat = CAT     $@
 784 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 785
 786 all:            $(ALL-y)
 787 ifneq ($(CONFIG_SYS_GENERIC_BOARD),y)
 788         @echo "===================== WARNING ======================"
 789         @echo "Please convert this board to generic board."
 790         @echo "Otherwise it will be removed by the end of 2014."
 791         @echo "See doc/README.generic-board for further information"
 792         @echo "===================================================="
 793 endif
 794 ifeq ($(CONFIG_DM_I2C_COMPAT),y)
 795         @echo "===================== WARNING ======================"
 796         @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
 797         @echo "(possibly in a subsequent patch in your series)"
 798         @echo "before sending patches to the mailing list."
 799         @echo "===================================================="
 800 endif
 801
 802 PHONY += dtbs
 803 dtbs dts/dt.dtb: checkdtc u-boot
 804         $(Q)$(MAKE) $(build)=dts dtbs
 805
 806 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
 807         $(call if_changed,cat)
 808
 809 %.imx: %.bin
 810         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 811
 812 quiet_cmd_copy = COPY    $@
 813       cmd_copy = cp $< $@
 814
 815 u-boot.dtb: dts/dt.dtb
 816         $(call cmd,copy)
 817
 818 OBJCOPYFLAGS_u-boot.hex := -O ihex
 819
 820 OBJCOPYFLAGS_u-boot.srec := -O srec
 821
 822 u-boot.hex u-boot.srec: u-boot FORCE
 823         $(call if_changed,objcopy)
 824
 825 OBJCOPYFLAGS_u-boot.bin := -O binary \
 826                 $(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
 827
 828 binary_size_check: u-boot.bin FORCE
 829         @file_size=$(shell wc -c u-boot.bin | awk '{print $$1}') ; \
 830         map_size=$(shell cat u-boot.map | \
 831                 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
 832                 | sed 's/0X//g' \
 833                 | bc); \
 834         if [ "" != "$$map_size" ]; then \
 835                 if test $$map_size -ne $$file_size; then \
 836                         echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
 837                         echo "  but u-boot.bin shows $$file_size" >&2 ; \
 838                         exit 1; \
 839                 fi \
 840         fi
 841
 842 u-boot.bin: u-boot FORCE
 843         $(call if_changed,objcopy)
 844         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 845         $(BOARD_SIZE_CHECK)
 846
 847 u-boot.ldr:     u-boot
 848                 $(CREATE_LDR_ENV)
 849                 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
 850                 $(BOARD_SIZE_CHECK)
 851
 852 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 853
 854 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 855
 856 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 857         $(call if_changed,objcopy)
 858
 859 #
 860 # U-Boot entry point, needed for booting of full-blown U-Boot
 861 # from the SPL U-Boot version.
 862 #
 863 ifndef CONFIG_SYS_UBOOT_START
 864 CONFIG_SYS_UBOOT_START := 0
 865 endif
 866
 867 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 868         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 869         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 870
 871 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 872         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 873
 874 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 875         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 876
 877 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 878                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 879
 880 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 881         $(call if_changed,mkimage)
 882
 883 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
 884         $(call if_changed,mkimage)
 885
 886 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 887
 888 u-boot-dtb.img: u-boot-dtb.bin FORCE
 889         $(call if_changed,mkimage)
 890
 891 u-boot.sha1:    u-boot.bin
 892                 tools/ubsha1 u-boot.bin
 893
 894 u-boot.dis:     u-boot
 895                 $(OBJDUMP) -d $< > $@
 896
 897 ifdef CONFIG_TPL
 898 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 899 else
 900 SPL_PAYLOAD := u-boot.bin
 901 endif
 902
 903 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 904                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 905 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 906         $(call if_changed,pad_cat)
 907
 908 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 909                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 910 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 911         $(call if_changed,pad_cat)
 912
 913 SPL: spl/u-boot-spl.bin FORCE
 914         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 915
 916 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 917         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 918
 919 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 920
 921 u-boot.ubl: u-boot-with-spl.bin FORCE
 922         $(call if_changed,mkimage)
 923
 924 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 925         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 926         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 927 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 928         $(call if_changed,mkimage)
 929
 930 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 931 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 932         $(call if_changed,pad_cat)
 933
 934 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
 935         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
 936 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 937         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
 938
 939 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 940 # Both images are created using mkimage (crc etc), so that the ROM
 941 # bootloader can check its integrity. Padding needs to be done to the
 942 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 943 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 944 # The resulting image containing both U-Boot images is called u-boot.spr
 945 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 946         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
 947 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
 948         $(call if_changed,mkimage)
 949
 950 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 951                           --gap-fill=0xff
 952 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
 953         $(call if_changed,pad_cat)
 954
 955 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
 956         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
 957 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
 958         $(call if_changed,mkimage)
 959
 960 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 961                           --gap-fill=0
 962 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
 963         $(call if_changed,pad_cat)
 964
 965 MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
 966         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
 967 u-boot-nand.gph: u-boot.bin FORCE
 968         $(call if_changed,mkimage)
 969         @dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@
 970
 971 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
 972 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
 973 # the middle.
 974 ifneq ($(CONFIG_X86_RESET_VECTOR),)
 975 rom: u-boot.rom FORCE
 976
 977 IFDTOOL=$(objtree)/tools/ifdtool
 978 IFDTOOL_FLAGS  = -f 0:$(objtree)/u-boot.dtb
 979 IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
 980 IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot.bin
 981 IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
 982
 983 ifneq ($(CONFIG_HAVE_INTEL_ME),)
 984 IFDTOOL_ME_FLAGS  = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
 985 IFDTOOL_ME_FLAGS += -i ME:$(srctree)/board/$(BOARDDIR)/me.bin
 986 endif
 987
 988 ifneq ($(CONFIG_HAVE_MRC),)
 989 IFDTOOL_FLAGS += -w $(CONFIG_X86_MRC_ADDR):$(srctree)/board/$(BOARDDIR)/mrc.bin
 990 endif
 991
 992 ifneq ($(CONFIG_HAVE_FSP),)
 993 IFDTOOL_FLAGS += -w $(CONFIG_FSP_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_FSP_FILE)
 994 endif
 995
 996 ifneq ($(CONFIG_HAVE_CMC),)
 997 IFDTOOL_FLAGS += -w $(CONFIG_CMC_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_CMC_FILE)
 998 endif
 999
1000 ifneq ($(CONFIG_X86_OPTION_ROM_ADDR),)
1001 IFDTOOL_FLAGS += -w $(CONFIG_X86_OPTION_ROM_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_X86_OPTION_ROM_FILE)
1002 endif
1003
1004 quiet_cmd_ifdtool = IFDTOOL $@
1005 cmd_ifdtool  = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
1006 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1007 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_ME_FLAGS) u-boot.tmp;
1008 endif
1009 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
1010 cmd_ifdtool += mv u-boot.tmp $@
1011
1012 u-boot.rom: u-boot-x86-16bit.bin u-boot-dtb.bin
1013         $(call if_changed,ifdtool)
1014
1015 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1016 u-boot-x86-16bit.bin: u-boot FORCE
1017         $(call if_changed,objcopy)
1018 endif
1019
1020 ifneq ($(CONFIG_SUNXI),)
1021 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
1022                                    --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
1023 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin \
1024                         u-boot$(if $(CONFIG_OF_CONTROL),-dtb,).img FORCE
1025         $(call if_changed,pad_cat)
1026 endif
1027
1028 ifneq ($(CONFIG_TEGRA),)
1029 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1030 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1031         $(call if_changed,pad_cat)
1032
1033 ifeq ($(CONFIG_OF_SEPARATE),y)
1034 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
1035         $(call if_changed,cat)
1036 endif
1037 endif
1038
1039 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1040         $(call if_changed,cat)
1041
1042 #Add a target to create boot binary having SPL binary in PBI format
1043 #concatenated with u-boot binary. It is need by PowerPC SoC having
1044 #internal SRAM <= 512KB.
1045 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1046                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1047                 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1048
1049 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1050         $(call if_changed,mkimage)
1051
1052 ifeq ($(ARCH),arm)
1053 UBOOT_BINLOAD := u-boot.img
1054 else
1055 UBOOT_BINLOAD := u-boot.bin
1056 endif
1057
1058 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1059                           --gap-fill=0xff
1060
1061 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1062         $(call if_changed,pad_cat)
1063
1064 # PPC4xx needs the SPL at the end of the image, since the reset vector
1065 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1066 # and need to introduce a new build target with the full blown U-Boot
1067 # at the start padded up to the start of the SPL image. And then concat
1068 # the SPL image to the end.
1069
1070 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1071         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1072 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1073         $(call if_changed,pad_cat)
1074
1075 # Create a new ELF from a raw binary file.  This is useful for arm64
1076 # where static relocation needs to be performed on the raw binary,
1077 # but certain simulators only accept an ELF file (but don't do the
1078 # relocation).
1079 # FIXME refactor dts/Makefile to share target/arch detection
1080 u-boot.elf: u-boot.bin
1081         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
1082                 $< u-boot-elf.o
1083         @$(LD) u-boot-elf.o -o $@ \
1084                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1085                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1086
1087 # Rule to link u-boot
1088 # May be overridden by arch/$(ARCH)/config.mk
1089 quiet_cmd_u-boot__ ?= LD      $@
1090       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1091       -T u-boot.lds $(u-boot-init)                             \
1092       --start-group $(u-boot-main) --end-group                 \
1093       $(PLATFORM_LIBS) -Map u-boot.map
1094
1095 quiet_cmd_smap = GEN     common/system_map.o
1096 cmd_smap = \
1097         smap=`$(call SYSTEM_MAP,u-boot) | \
1098                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1099         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1100                 -c $(srctree)/common/system_map.c -o common/system_map.o
1101
1102 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1103         $(call if_changed,u-boot__)
1104 ifeq ($(CONFIG_KALLSYMS),y)
1105         $(call cmd,smap)
1106         $(call cmd,u-boot__) common/system_map.o
1107 endif
1108
1109 # The actual objects are generated when descending,
1110 # make sure no implicit rule kicks in
1111 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1112
1113 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1114 # Preset locale variables to speed up the build process. Limit locale
1115 # tweaks to this spot to avoid wrong language settings when running
1116 # make menuconfig etc.
1117 # Error messages still appears in the original language
1118
1119 PHONY += $(u-boot-dirs)
1120 $(u-boot-dirs): prepare scripts
1121         $(Q)$(MAKE) $(build)=$@
1122
1123 tools: prepare
1124 # The "tools" are needed early
1125 $(filter-out tools, $(u-boot-dirs)): tools
1126 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1127 # is "yes"), so compile examples after U-Boot is compiled.
1128 examples: $(filter-out examples, $(u-boot-dirs))
1129
1130 define filechk_uboot.release
1131         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1132 endef
1133
1134 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1135 include/config/uboot.release: include/config/auto.conf FORCE
1136         $(call filechk,uboot.release)
1137
1138
1139 # Things we need to do before we recursively start building the kernel
1140 # or the modules are listed in "prepare".
1141 # A multi level approach is used. prepareN is processed before prepareN-1.
1142 # archprepare is used in arch Makefiles and when processed asm symlink,
1143 # version.h and scripts_basic is processed / created.
1144
1145 # Listed in dependency order
1146 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1147
1148 # prepare3 is used to check if we are building in a separate output directory,
1149 # and if so do:
1150 # 1) Check that make has not been executed in the kernel src $(srctree)
1151 prepare3: include/config/uboot.release
1152 ifneq ($(KBUILD_SRC),)
1153         @$(kecho) '  Using $(srctree) as source for U-Boot'
1154         $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1155                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1156                 echo >&2 "  in the '$(srctree)' directory.";\
1157                 /bin/false; \
1158         fi;
1159 endif
1160
1161 # prepare2 creates a makefile if using a separate output directory
1162 prepare2: prepare3 outputmakefile
1163
1164 prepare1: prepare2 $(version_h) $(timestamp_h) \
1165                    include/config/auto.conf
1166 ifeq ($(CONFIG_HAVE_GENERIC_BOARD),)
1167 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1168         @echo >&2 "  Your architecture does not support generic board."
1169         @echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1170         @/bin/false
1171 endif
1172 endif
1173 ifeq ($(wildcard $(LDSCRIPT)),)
1174         @echo >&2 "  Could not find linker script."
1175         @/bin/false
1176 endif
1177
1178 archprepare: prepare1 scripts_basic
1179
1180 prepare0: archprepare FORCE
1181         $(Q)$(MAKE) $(build)=.
1182
1183 # All the preparing..
1184 prepare: prepare0
1185
1186 # Generate some files
1187 # ---------------------------------------------------------------------------
1188
1189 define filechk_version.h
1190         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1191         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1192         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1193         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1194 endef
1195
1196 define filechk_timestamp.h
1197         (LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
1198         LC_ALL=C date +'#define U_BOOT_TIME "%T"')
1199 endef
1200
1201 $(version_h): include/config/uboot.release FORCE
1202         $(call filechk,version.h)
1203
1204 $(timestamp_h): $(srctree)/Makefile FORCE
1205         $(call filechk,timestamp.h)
1206
1207 # ---------------------------------------------------------------------------
1208
1209 PHONY += depend dep
1210 depend dep:
1211         @echo '*** Warning: make $@ is unnecessary now.'
1212
1213 # ---------------------------------------------------------------------------
1214 quiet_cmd_cpp_lds = LDS     $@
1215 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1216                 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1217
1218 u-boot.lds: $(LDSCRIPT) prepare FORCE
1219         $(call if_changed_dep,cpp_lds)
1220
1221 spl/u-boot-spl.bin: spl/u-boot-spl
1222         @:
1223 spl/u-boot-spl: tools prepare
1224         $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1225
1226 spl/sunxi-spl.bin: spl/u-boot-spl
1227         @:
1228
1229 tpl/u-boot-tpl.bin: tools prepare
1230         $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1231
1232 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1233
1234 FIND := find
1235 FINDFLAGS := -L
1236
1237 tags ctags:
1238                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1239                                                 -name '*.[chS]' -print`
1240
1241 etags:
1242                 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1243                                                 -name '*.[chS]' -print`
1244 cscope:
1245                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1246                                                 cscope.files
1247                 cscope -b -q -k
1248
1249 SYSTEM_MAP = \
1250                 $(NM) $1 | \
1251                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1252                 LC_ALL=C sort
1253 System.map:     u-boot
1254                 @$(call SYSTEM_MAP,$<) > $@
1255
1256 checkdtc:
1257         @if test $(call dtc-version) -lt 0104; then \
1258                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1259                 false; \
1260         fi
1261
1262 #########################################################################
1263
1264 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1265 # R_AARCH64_RELATIVE (64-bit).
1266 checkarmreloc: u-boot
1267         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1268                 grep R_A | sort -u`"; \
1269         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1270                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1271                 echo "$< contains unexpected relocations: $$RELOC"; \
1272                 false; \
1273         fi
1274
1275 env: scripts_basic
1276         $(Q)$(MAKE) $(build)=tools/$@
1277
1278 tools-only: scripts_basic $(version_h) $(timestamp_h)
1279         $(Q)$(MAKE) $(build)=tools
1280
1281 tools-all: export HOST_TOOLS_ALL=y
1282 tools-all: env tools ;
1283
1284 cross_tools: export CROSS_BUILD_TOOLS=y
1285 cross_tools: tools ;
1286
1287 .PHONY : CHANGELOG
1288 CHANGELOG:
1289         git log --no-merges U-Boot-1_1_5.. | \
1290         unexpand -a | sed -e 's/\s\s*$$//' > $@
1291
1292 include/license.h: tools/bin2header COPYING
1293         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1294 #########################################################################
1295
1296 ###
1297 # Cleaning is done on three levels.
1298 # make clean     Delete most generated files
1299 #                Leave enough to build external modules
1300 # make mrproper  Delete the current configuration, and all generated files
1301 # make distclean Remove editor backup files, patch leftover files and the like
1302
1303 # Directories & files removed with 'make clean'
1304 CLEAN_DIRS  += $(MODVERDIR) \
1305                $(foreach d, spl tpl, $(patsubst %,$d/%, \
1306                         $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1307
1308 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1309                boot* u-boot* MLO* SPL System.map
1310
1311 # Directories & files removed with 'make mrproper'
1312 MRPROPER_DIRS  += include/config include/generated spl tpl \
1313                   .tmp_objdiff
1314 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1315                   ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1316
1317 # clean - Delete most, but leave enough to build external modules
1318 #
1319 clean: rm-dirs  := $(CLEAN_DIRS)
1320 clean: rm-files := $(CLEAN_FILES)
1321
1322 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1323
1324 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1325
1326 PHONY += $(clean-dirs) clean archclean
1327 $(clean-dirs):
1328         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1329
1330 # TODO: Do not use *.cfgtmp
1331 clean: $(clean-dirs)
1332         $(call cmd,rmdirs)
1333         $(call cmd,rmfiles)
1334         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1335                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1336                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1337                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1338                 -o -name '*.symtypes' -o -name 'modules.order' \
1339                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1340                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1341
1342 # mrproper - Delete all generated files, including .config
1343 #
1344 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1345 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1346 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1347
1348 PHONY += $(mrproper-dirs) mrproper archmrproper
1349 $(mrproper-dirs):
1350         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1351
1352 mrproper: clean $(mrproper-dirs)
1353         $(call cmd,rmdirs)
1354         $(call cmd,rmfiles)
1355         @rm -f arch/*/include/asm/arch
1356
1357 # distclean
1358 #
1359 PHONY += distclean
1360
1361 distclean: mrproper
1362         @find $(srctree) $(RCS_FIND_IGNORE) \
1363                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1364                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1365                 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1366                 -o -name '*.pyc' \) \
1367                 -type f -print | xargs rm -f
1368         @rm -f boards.cfg
1369
1370 backup:
1371         F=`basename $(srctree)` ; cd .. ; \
1372         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1373
1374 help:
1375         @echo  'Cleaning targets:'
1376         @echo  '  clean           - Remove most generated files but keep the config'
1377         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1378         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1379         @echo  ''
1380         @echo  'Configuration targets:'
1381         @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1382         @echo  ''
1383         @echo  'Other generic targets:'
1384         @echo  '  all             - Build all necessary images depending on configuration'
1385         @echo  '* u-boot          - Build the bare u-boot'
1386         @echo  '  dir/            - Build all files in dir and below'
1387         @echo  '  dir/file.[oisS] - Build specified target only'
1388         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1389         @echo  '                    (requires a recent binutils and recent build (System.map))'
1390         @echo  '  tags/ctags      - Generate ctags file for editors'
1391         @echo  '  etags           - Generate etags file for editors'
1392         @echo  '  cscope          - Generate cscope index'
1393         @echo  '  ubootrelease    - Output the release version string (use with make -s)'
1394         @echo  '  ubootversion    - Output the version stored in Makefile (use with make -s)'
1395         @echo  ''
1396         @echo  'Static analysers'
1397         @echo  '  checkstack      - Generate a list of stack hogs'
1398         @echo  ''
1399         @echo  'Documentation targets:'
1400         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1401         @echo  ''
1402         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1403         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1404         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1405         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1406         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1407         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1408         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1409         @echo  '                1: warnings which may be relevant and do not occur too often'
1410         @echo  '                2: warnings which occur quite often but may still be relevant'
1411         @echo  '                3: more obscure warnings, can most likely be ignored'
1412         @echo  '                Multiple levels can be combined with W=12 or W=123'
1413         @echo  ''
1414         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1415         @echo  'For further info see the ./README file'
1416
1417
1418 # Documentation targets
1419 # ---------------------------------------------------------------------------
1420 %docs: scripts_basic FORCE
1421         $(Q)$(MAKE) $(build)=scripts build_docproc
1422         $(Q)$(MAKE) $(build)=doc/DocBook $@
1423
1424 # Dummies...
1425 PHONY += prepare scripts
1426 prepare: ;
1427 scripts: ;
1428
1429 endif #ifeq ($(config-targets),1)
1430 endif #ifeq ($(mixed-targets),1)
1431
1432 PHONY += checkstack ubootrelease ubootversion
1433
1434 checkstack:
1435         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1436         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1437
1438 ubootrelease:
1439         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1440
1441 ubootversion:
1442         @echo $(UBOOTVERSION)
1443
1444 # Single targets
1445 # ---------------------------------------------------------------------------
1446 # Single targets are compatible with:
1447 # - build with mixed source and output
1448 # - build with separate output dir 'make O=...'
1449 # - external modules
1450 #
1451 #  target-dir => where to store outputfile
1452 #  build-dir  => directory in kernel source tree to use
1453
1454 ifeq ($(KBUILD_EXTMOD),)
1455         build-dir  = $(patsubst %/,%,$(dir $@))
1456         target-dir = $(dir $@)
1457 else
1458         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1459         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1460         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1461 endif
1462
1463 %.s: %.c prepare scripts FORCE
1464         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1465 %.i: %.c prepare scripts FORCE
1466         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1467 %.o: %.c prepare scripts FORCE
1468         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1469 %.lst: %.c prepare scripts FORCE
1470         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1471 %.s: %.S prepare scripts FORCE
1472         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1473 %.o: %.S prepare scripts FORCE
1474         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1475 %.symtypes: %.c prepare scripts FORCE
1476         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1477
1478 # Modules
1479 /: prepare scripts FORCE
1480         $(cmd_crmodverdir)
1481         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1482         $(build)=$(build-dir)
1483 %/: prepare scripts FORCE
1484         $(cmd_crmodverdir)
1485         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1486         $(build)=$(build-dir)
1487 %.ko: prepare scripts FORCE
1488         $(cmd_crmodverdir)
1489         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1490         $(build)=$(build-dir) $(@:.ko=.o)
1491         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1492
1493 # FIXME Should go into a make.lib or something
1494 # ===========================================================================
1495
1496 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1497       cmd_rmdirs = rm -rf $(rm-dirs)
1498
1499 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1500       cmd_rmfiles = rm -f $(rm-files)
1501
1502 # read all saved command lines
1503
1504 targets := $(wildcard $(sort $(targets)))
1505 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1506
1507 ifneq ($(cmd_files),)
1508   $(cmd_files): ;       # Do not try to update included dependency files
1509   include $(cmd_files)
1510 endif
1511
1512 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1513 # Usage:
1514 # $(Q)$(MAKE) $(clean)=dir
1515 clean := -f $(srctree)/scripts/Makefile.clean obj
1516
1517 endif   # skip-makefile
1518
1519 PHONY += FORCE
1520 FORCE:
1521
1522 # Declare the contents of the .PHONY variable as phony.  We keep that
1523 # information in a variable so we can use it in if_changed and friends.
1524 .PHONY: $(PHONY)