Makefile

   1 VERSION = 2015
   2 PATCHLEVEL = 10
   3 SUBLEVEL =
   4 EXTRAVERSION = -rc1
   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 # o Do not use make's built-in rules and variables
  14 #   (this increases performance and avoids hard-to-debug behaviour);
  15 # o Look for make include files relative to root of kernel src
  16 MAKEFLAGS += -rR --include-dir=$(CURDIR)
  17
  18 # Avoid funny character set dependencies
  19 unexport LC_ALL
  20 LC_COLLATE=C
  21 LC_NUMERIC=C
  22 export LC_COLLATE LC_NUMERIC
  23
  24 # Avoid interference with shell env settings
  25 unexport GREP_OPTIONS
  26
  27 # We are using a recursive build, so we need to do a little thinking
  28 # to get the ordering right.
  29 #
  30 # Most importantly: sub-Makefiles should only ever modify files in
  31 # their own directory. If in some directory we have a dependency on
  32 # a file in another dir (which doesn't happen often, but it's often
  33 # unavoidable when linking the built-in.o targets which finally
  34 # turn into vmlinux), we will call a sub make in that other dir, and
  35 # after that we are sure that everything which is in that other dir
  36 # is now up to date.
  37 #
  38 # The only cases where we need to modify files which have global
  39 # effects are thus separated out and done before the recursive
  40 # descending is started. They are now explicitly listed as the
  41 # prepare rule.
  42
  43 # Beautify output
  44 # ---------------------------------------------------------------------------
  45 #
  46 # Normally, we echo the whole command before executing it. By making
  47 # that echo $($(quiet)$(cmd)), we now have the possibility to set
  48 # $(quiet) to choose other forms of output instead, e.g.
  49 #
  50 #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  51 #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  52 #
  53 # If $(quiet) is empty, the whole command will be printed.
  54 # If it is set to "quiet_", only the short version will be printed.
  55 # If it is set to "silent_", nothing will be printed at all, since
  56 # the variable $(silent_cmd_cc_o_c) doesn't exist.
  57 #
  58 # A simple variant is to prefix commands with $(Q) - that's useful
  59 # for commands that shall be hidden in non-verbose mode.
  60 #
  61 #       $(Q)ln $@ :<
  62 #
  63 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  64 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  65 #
  66 # To put more focus on warnings, be less verbose as default
  67 # Use 'make V=1' to see the full commands
  68
  69 ifeq ("$(origin V)", "command line")
  70   KBUILD_VERBOSE = $(V)
  71 endif
  72 ifndef KBUILD_VERBOSE
  73   KBUILD_VERBOSE = 0
  74 endif
  75
  76 ifeq ($(KBUILD_VERBOSE),1)
  77   quiet =
  78   Q =
  79 else
  80   quiet=quiet_
  81   Q = @
  82 endif
  83
  84 # If the user is running make -s (silent mode), suppress echoing of
  85 # commands
  86
  87 ifneq ($(filter 4.%,$(MAKE_VERSION)),)  # make-4
  88 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
  89   quiet=silent_
  90 endif
  91 else                                    # make-3.8x
  92 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
  93   quiet=silent_
  94 endif
  95 endif
  96
  97 export quiet Q KBUILD_VERBOSE
  98
  99 # kbuild supports saving output files in a separate directory.
 100 # To locate output files in a separate directory two syntaxes are supported.
 101 # In both cases the working directory must be the root of the kernel src.
 102 # 1) O=
 103 # Use "make O=dir/to/store/output/files/"
 104 #
 105 # 2) Set KBUILD_OUTPUT
 106 # Set the environment variable KBUILD_OUTPUT to point to the directory
 107 # where the output files shall be placed.
 108 # export KBUILD_OUTPUT=dir/to/store/output/files/
 109 # make
 110 #
 111 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
 112 # variable.
 113
 114 # KBUILD_SRC is set on invocation of make in OBJ directory
 115 # KBUILD_SRC is not intended to be used by the regular user (for now)
 116 ifeq ($(KBUILD_SRC),)
 117
 118 # OK, Make called in directory where kernel src resides
 119 # Do we want to locate output files in a separate directory?
 120 ifeq ("$(origin O)", "command line")
 121   KBUILD_OUTPUT := $(O)
 122 endif
 123
 124 # That's our default target when none is given on the command line
 125 PHONY := _all
 126 _all:
 127
 128 # Cancel implicit rules on top Makefile
 129 $(CURDIR)/Makefile Makefile: ;
 130
 131 ifneq ($(KBUILD_OUTPUT),)
 132 # Invoke a second make in the output directory, passing relevant variables
 133 # check that the output directory actually exists
 134 saved-output := $(KBUILD_OUTPUT)
 135 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
 136                                                                 && /bin/pwd)
 137 $(if $(KBUILD_OUTPUT),, \
 138      $(error failed to create output directory "$(saved-output)"))
 139
 140 PHONY += $(MAKECMDGOALS) sub-make
 141
 142 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
 143         @:
 144
 145 sub-make: FORCE
 146         $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
 147         -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
 148
 149 # Leave processing to above invocation of make
 150 skip-makefile := 1
 151 endif # ifneq ($(KBUILD_OUTPUT),)
 152 endif # ifeq ($(KBUILD_SRC),)
 153
 154 # We process the rest of the Makefile if this is the final invocation of make
 155 ifeq ($(skip-makefile),)
 156
 157 # Do not print "Entering directory ...",
 158 # but we want to display it when entering to the output directory
 159 # so that IDEs/editors are able to understand relative filenames.
 160 MAKEFLAGS += --no-print-directory
 161
 162 # Call a source code checker (by default, "sparse") as part of the
 163 # C compilation.
 164 #
 165 # Use 'make C=1' to enable checking of only re-compiled files.
 166 # Use 'make C=2' to enable checking of *all* source files, regardless
 167 # of whether they are re-compiled or not.
 168 #
 169 # See the file "Documentation/sparse.txt" for more details, including
 170 # where to get the "sparse" utility.
 171
 172 ifeq ("$(origin C)", "command line")
 173   KBUILD_CHECKSRC = $(C)
 174 endif
 175 ifndef KBUILD_CHECKSRC
 176   KBUILD_CHECKSRC = 0
 177 endif
 178
 179 # Use make M=dir to specify directory of external module to build
 180 # Old syntax make ... SUBDIRS=$PWD is still supported
 181 # Setting the environment variable KBUILD_EXTMOD take precedence
 182 ifdef SUBDIRS
 183   KBUILD_EXTMOD ?= $(SUBDIRS)
 184 endif
 185
 186 ifeq ("$(origin M)", "command line")
 187   KBUILD_EXTMOD := $(M)
 188 endif
 189
 190 # If building an external module we do not care about the all: rule
 191 # but instead _all depend on modules
 192 PHONY += all
 193 ifeq ($(KBUILD_EXTMOD),)
 194 _all: all
 195 else
 196 _all: modules
 197 endif
 198
 199 ifeq ($(KBUILD_SRC),)
 200         # building in the source tree
 201         srctree := .
 202 else
 203         ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
 204                 # building in a subdirectory of the source tree
 205                 srctree := ..
 206         else
 207                 srctree := $(KBUILD_SRC)
 208         endif
 209 endif
 210 objtree         := .
 211 src             := $(srctree)
 212 obj             := $(objtree)
 213
 214 VPATH           := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 215
 216 export srctree objtree VPATH
 217
 218 # Make sure CDPATH settings don't interfere
 219 unexport CDPATH
 220
 221 #########################################################################
 222
 223 HOSTARCH := $(shell uname -m | \
 224         sed -e s/i.86/x86/ \
 225             -e s/sun4u/sparc64/ \
 226             -e s/arm.*/arm/ \
 227             -e s/sa110/arm/ \
 228             -e s/ppc64/powerpc/ \
 229             -e s/ppc/powerpc/ \
 230             -e s/macppc/powerpc/\
 231             -e s/sh.*/sh/)
 232
 233 HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
 234             sed -e 's/\(cygwin\).*/cygwin/')
 235
 236 export  HOSTARCH HOSTOS
 237
 238 #########################################################################
 239
 240 # set default to nothing for native builds
 241 ifeq ($(HOSTARCH),$(ARCH))
 242 CROSS_COMPILE ?=
 243 endif
 244
 245 KCONFIG_CONFIG  ?= .config
 246 export KCONFIG_CONFIG
 247
 248 # SHELL used by kbuild
 249 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 250           else if [ -x /bin/bash ]; then echo /bin/bash; \
 251           else echo sh; fi ; fi)
 252
 253 HOSTCC       = cc
 254 HOSTCXX      = c++
 255 HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 256 HOSTCXXFLAGS = -O2
 257
 258 ifeq ($(HOSTOS),cygwin)
 259 HOSTCFLAGS      += -ansi
 260 endif
 261
 262 # Mac OS X / Darwin's C preprocessor is Apple specific.  It
 263 # generates numerous errors and warnings.  We want to bypass it
 264 # and use GNU C's cpp.  To do this we pass the -traditional-cpp
 265 # option to the compiler.  Note that the -traditional-cpp flag
 266 # DOES NOT have the same semantics as GNU C's flag, all it does
 267 # is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
 268 #
 269 # Apple's linker is similar, thanks to the new 2 stage linking
 270 # multiple symbol definitions are treated as errors, hence the
 271 # -multiply_defined suppress option to turn off this error.
 272 #
 273 ifeq ($(HOSTOS),darwin)
 274 # get major and minor product version (e.g. '10' and '6' for Snow Leopard)
 275 DARWIN_MAJOR_VERSION    = $(shell sw_vers -productVersion | cut -f 1 -d '.')
 276 DARWIN_MINOR_VERSION    = $(shell sw_vers -productVersion | cut -f 2 -d '.')
 277
 278 os_x_before     = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
 279         $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 280
 281 # Snow Leopards build environment has no longer restrictions as described above
 282 HOSTCC       = $(call os_x_before, 10, 5, "cc", "gcc")
 283 HOSTCFLAGS  += $(call os_x_before, 10, 4, "-traditional-cpp")
 284 HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
 285
 286 # since Lion (10.7) ASLR is on by default, but we use linker generated lists
 287 # in some host tools which is a problem then ... so disable ASLR for these
 288 # tools
 289 HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie")
 290 endif
 291
 292 # Decide whether to build built-in, modular, or both.
 293 # Normally, just do built-in.
 294
 295 KBUILD_MODULES :=
 296 KBUILD_BUILTIN := 1
 297
 298 # If we have only "make modules", don't compile built-in objects.
 299 # When we're building modules with modversions, we need to consider
 300 # the built-in objects during the descend as well, in order to
 301 # make sure the checksums are up to date before we record them.
 302
 303 ifeq ($(MAKECMDGOALS),modules)
 304   KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
 305 endif
 306
 307 # If we have "make <whatever> modules", compile modules
 308 # in addition to whatever we do anyway.
 309 # Just "make" or "make all" shall build modules as well
 310
 311 # U-Boot does not need modules
 312 #ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
 313 #  KBUILD_MODULES := 1
 314 #endif
 315
 316 #ifeq ($(MAKECMDGOALS),)
 317 #  KBUILD_MODULES := 1
 318 #endif
 319
 320 export KBUILD_MODULES KBUILD_BUILTIN
 321 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 322
 323 # We need some generic definitions (do not try to remake the file).
 324 scripts/Kbuild.include: ;
 325 include scripts/Kbuild.include
 326
 327 # Make variables (CC, etc...)
 328
 329 AS              = $(CROSS_COMPILE)as
 330 # Always use GNU ld
 331 ifneq ($(shell $(CROSS_COMPILE)ld.bfd -v 2> /dev/null),)
 332 LD              = $(CROSS_COMPILE)ld.bfd
 333 else
 334 LD              = $(CROSS_COMPILE)ld
 335 endif
 336 CC              = $(CROSS_COMPILE)gcc
 337 CPP             = $(CC) -E
 338 AR              = $(CROSS_COMPILE)ar
 339 NM              = $(CROSS_COMPILE)nm
 340 LDR             = $(CROSS_COMPILE)ldr
 341 STRIP           = $(CROSS_COMPILE)strip
 342 OBJCOPY         = $(CROSS_COMPILE)objcopy
 343 OBJDUMP         = $(CROSS_COMPILE)objdump
 344 AWK             = awk
 345 PERL            = perl
 346 PYTHON          = python
 347 DTC             = dtc
 348 CHECK           = sparse
 349
 350 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
 351                   -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
 352
 353 KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
 354
 355 KBUILD_CFLAGS   := -Wall -Wstrict-prototypes \
 356                    -Wno-format-security \
 357                    -fno-builtin -ffreestanding
 358 KBUILD_AFLAGS   := -D__ASSEMBLY__
 359
 360 # Read UBOOTRELEASE from include/config/uboot.release (if it exists)
 361 UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null)
 362 UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
 363
 364 export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 365 export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
 366 export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
 367 export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
 368 export MAKE AWK PERL PYTHON
 369 export HOSTCXX HOSTCXXFLAGS DTC CHECK CHECKFLAGS
 370
 371 export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS
 372 export KBUILD_CFLAGS KBUILD_AFLAGS
 373
 374 # When compiling out-of-tree modules, put MODVERDIR in the module
 375 # tree rather than in the kernel tree. The kernel tree might
 376 # even be read-only.
 377 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
 378
 379 # Files to ignore in find ... statements
 380
 381 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o    \
 382                           -name CVS -o -name .pc -o -name .hg -o -name .git \) \
 383                           -prune -o
 384 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 385                          --exclude CVS --exclude .pc --exclude .hg --exclude .git
 386
 387 # ===========================================================================
 388 # Rules shared between *config targets and build targets
 389
 390 # Basic helpers built in scripts/
 391 PHONY += scripts_basic
 392 scripts_basic:
 393         $(Q)$(MAKE) $(build)=scripts/basic
 394         $(Q)rm -f .tmp_quiet_recordmcount
 395
 396 # To avoid any implicit rule to kick in, define an empty command.
 397 scripts/basic/%: scripts_basic ;
 398
 399 PHONY += outputmakefile
 400 # outputmakefile generates a Makefile in the output directory, if using a
 401 # separate output directory. This allows convenient use of make in the
 402 # output directory.
 403 outputmakefile:
 404 ifneq ($(KBUILD_SRC),)
 405         $(Q)ln -fsn $(srctree) source
 406         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
 407             $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
 408 endif
 409
 410 # To make sure we do not include .config for any of the *config targets
 411 # catch them early, and hand them over to scripts/kconfig/Makefile
 412 # It is allowed to specify more targets when calling make, including
 413 # mixing *config targets and build targets.
 414 # For example 'make oldconfig all'.
 415 # Detect when mixed targets is specified, and make a second invocation
 416 # of make so .config is not included in this case either (for *config).
 417
 418 version_h := include/generated/version_autogenerated.h
 419 timestamp_h := include/generated/timestamp_autogenerated.h
 420
 421 no-dot-config-targets := clean clobber mrproper distclean \
 422                          help %docs check% coccicheck \
 423                          ubootversion backup
 424
 425 config-targets := 0
 426 mixed-targets  := 0
 427 dot-config     := 1
 428
 429 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
 430         ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
 431                 dot-config := 0
 432         endif
 433 endif
 434
 435 ifeq ($(KBUILD_EXTMOD),)
 436         ifneq ($(filter config %config,$(MAKECMDGOALS)),)
 437                 config-targets := 1
 438                 ifneq ($(words $(MAKECMDGOALS)),1)
 439                         mixed-targets := 1
 440                 endif
 441         endif
 442 endif
 443
 444 ifeq ($(mixed-targets),1)
 445 # ===========================================================================
 446 # We're called with mixed targets (*config and build targets).
 447 # Handle them one by one.
 448
 449 PHONY += $(MAKECMDGOALS) __build_one_by_one
 450
 451 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
 452         @:
 453
 454 __build_one_by_one:
 455         $(Q)set -e; \
 456         for i in $(MAKECMDGOALS); do \
 457                 $(MAKE) -f $(srctree)/Makefile $$i; \
 458         done
 459
 460 else
 461 ifeq ($(config-targets),1)
 462 # ===========================================================================
 463 # *config targets only - make sure prerequisites are updated, and descend
 464 # in scripts/kconfig to make the *config target
 465
 466 KBUILD_DEFCONFIG := sandbox_defconfig
 467 export KBUILD_DEFCONFIG KBUILD_KCONFIG
 468
 469 config: scripts_basic outputmakefile FORCE
 470         $(Q)$(MAKE) $(build)=scripts/kconfig $@
 471
 472 %config: scripts_basic outputmakefile FORCE
 473         $(Q)$(MAKE) $(build)=scripts/kconfig $@
 474
 475 else
 476 # ===========================================================================
 477 # Build targets only - this includes vmlinux, arch specific targets, clean
 478 # targets and others. In general all targets except *config targets.
 479
 480 ifeq ($(dot-config),1)
 481 # Read in config
 482 -include include/config/auto.conf
 483
 484 # Read in dependencies to all Kconfig* files, make sure to run
 485 # oldconfig if changes are detected.
 486 -include include/config/auto.conf.cmd
 487
 488 # To avoid any implicit rule to kick in, define an empty command
 489 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
 490
 491 # If .config is newer than include/config/auto.conf, someone tinkered
 492 # with it and forgot to run make oldconfig.
 493 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
 494 # we execute the config step to be sure to catch updated Kconfig files
 495 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
 496         $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
 497         @# If the following part fails, include/config/auto.conf should be
 498         @# deleted so "make silentoldconfig" will be re-run on the next build.
 499         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.autoconf || \
 500                 { rm -f include/config/auto.conf; false; }
 501         @# include/config.h has been updated after "make silentoldconfig".
 502         @# We need to touch include/config/auto.conf so it gets newer
 503         @# than include/config.h.
 504         @# Otherwise, 'make silentoldconfig' would be invoked twice.
 505         $(Q)touch include/config/auto.conf
 506
 507 -include include/autoconf.mk
 508 -include include/autoconf.mk.dep
 509
 510 # We want to include arch/$(ARCH)/config.mk only when include/config/auto.conf
 511 # is up-to-date. When we switch to a different board configuration, old CONFIG
 512 # macros are still remaining in include/config/auto.conf. Without the following
 513 # gimmick, wrong config.mk would be included leading nasty warnings/errors.
 514 ifneq ($(wildcard $(KCONFIG_CONFIG)),)
 515 ifneq ($(wildcard include/config/auto.conf),)
 516 autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
 517                                                 include/config/auto.conf)
 518 ifeq ($(autoconf_is_old),)
 519 include config.mk
 520 include arch/$(ARCH)/Makefile
 521 endif
 522 endif
 523 endif
 524
 525 # If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use
 526 # that (or fail if absent).  Otherwise, search for a linker script in a
 527 # standard location.
 528
 529 ifndef LDSCRIPT
 530         #LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds.debug
 531         ifdef CONFIG_SYS_LDSCRIPT
 532                 # need to strip off double quotes
 533                 LDSCRIPT := $(srctree)/$(CONFIG_SYS_LDSCRIPT:"%"=%)
 534         endif
 535 endif
 536
 537 # If there is no specified link script, we look in a number of places for it
 538 ifndef LDSCRIPT
 539         ifeq ($(wildcard $(LDSCRIPT)),)
 540                 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot.lds
 541         endif
 542         ifeq ($(wildcard $(LDSCRIPT)),)
 543                 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot.lds
 544         endif
 545         ifeq ($(wildcard $(LDSCRIPT)),)
 546                 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot.lds
 547         endif
 548 endif
 549
 550 else
 551 # Dummy target needed, because used as prerequisite
 552 include/config/auto.conf: ;
 553 endif # $(dot-config)
 554
 555 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 556 KBUILD_CFLAGS   += -Os
 557 else
 558 KBUILD_CFLAGS   += -O2
 559 endif
 560
 561 ifdef BUILD_TAG
 562 KBUILD_CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
 563 endif
 564
 565 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 566 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks)
 567
 568 KBUILD_CFLAGS   += -g
 569 # $(KBUILD_AFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 570 # option to the assembler.
 571 KBUILD_AFLAGS   += -g
 572
 573 # Report stack usage if supported
 574 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-stack-usage.sh $(CC)),y)
 575         KBUILD_CFLAGS += -fstack-usage
 576 endif
 577
 578 KBUILD_CFLAGS += $(call cc-option,-Wno-format-nonliteral)
 579
 580 # turn jbsr into jsr for m68k
 581 ifeq ($(ARCH),m68k)
 582 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
 583 KBUILD_AFLAGS += -Wa,-gstabs,-S
 584 endif
 585 endif
 586
 587 # Prohibit date/time macros, which would make the build non-deterministic
 588 KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
 589
 590 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 591 KBUILD_CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
 592 endif
 593
 594 export CONFIG_SYS_TEXT_BASE
 595
 596 include scripts/Makefile.extrawarn
 597
 598 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
 599 KBUILD_CPPFLAGS += $(KCPPFLAGS)
 600 KBUILD_AFLAGS += $(KAFLAGS)
 601 KBUILD_CFLAGS += $(KCFLAGS)
 602
 603 # Use UBOOTINCLUDE when you must reference the include/ directory.
 604 # Needed to be compatible with the O= option
 605 UBOOTINCLUDE    := \
 606                 -Iinclude \
 607                 $(if $(KBUILD_SRC), -I$(srctree)/include) \
 608                 -I$(srctree)/arch/$(ARCH)/include \
 609                 -include $(srctree)/include/linux/kconfig.h
 610
 611 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
 612 CHECKFLAGS     += $(NOSTDINC_FLAGS)
 613
 614 # FIX ME
 615 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
 616                                                         $(NOSTDINC_FLAGS)
 617 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
 618
 619 #########################################################################
 620 # U-Boot objects....order is important (i.e. start must be first)
 621
 622 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
 623
 624 libs-y += lib/
 625 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
 626 libs-$(CONFIG_OF_EMBED) += dts/
 627 libs-y += fs/
 628 libs-y += net/
 629 libs-y += disk/
 630 libs-y += drivers/
 631 libs-y += drivers/dma/
 632 libs-y += drivers/gpio/
 633 libs-y += drivers/i2c/
 634 libs-y += drivers/mmc/
 635 libs-y += drivers/mtd/
 636 libs-$(CONFIG_CMD_NAND) += drivers/mtd/nand/
 637 libs-y += drivers/mtd/onenand/
 638 libs-$(CONFIG_CMD_UBI) += drivers/mtd/ubi/
 639 libs-y += drivers/mtd/spi/
 640 libs-y += drivers/net/
 641 libs-y += drivers/net/phy/
 642 libs-y += drivers/pci/
 643 libs-y += drivers/power/ \
 644         drivers/power/fuel_gauge/ \
 645         drivers/power/mfd/ \
 646         drivers/power/pmic/ \
 647         drivers/power/battery/ \
 648         drivers/power/regulator/
 649 libs-y += drivers/spi/
 650 libs-$(CONFIG_FMAN_ENET) += drivers/net/fm/
 651 libs-$(CONFIG_SYS_FSL_DDR) += drivers/ddr/fsl/
 652 libs-y += drivers/serial/
 653 libs-y += drivers/usb/dwc3/
 654 libs-y += drivers/usb/emul/
 655 libs-y += drivers/usb/eth/
 656 libs-y += drivers/usb/gadget/
 657 libs-y += drivers/usb/gadget/udc/
 658 libs-y += drivers/usb/host/
 659 libs-y += drivers/usb/musb/
 660 libs-y += drivers/usb/musb-new/
 661 libs-y += drivers/usb/phy/
 662 libs-y += drivers/usb/ulpi/
 663 libs-y += common/
 664 libs-$(CONFIG_API) += api/
 665 libs-$(CONFIG_HAS_POST) += post/
 666 libs-y += test/
 667 libs-y += test/dm/
 668 libs-$(CONFIG_UT_ENV) += test/env/
 669
 670 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
 671
 672 libs-y := $(sort $(libs-y))
 673
 674 u-boot-dirs     := $(patsubst %/,%,$(filter %/, $(libs-y))) tools examples
 675
 676 u-boot-alldirs  := $(sort $(u-boot-dirs) $(patsubst %/,%,$(filter %/, $(libs-))))
 677
 678 libs-y          := $(patsubst %/, %/built-in.o, $(libs-y))
 679
 680 u-boot-init := $(head-y)
 681 u-boot-main := $(libs-y)
 682
 683
 684 # Add GCC lib
 685 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
 686 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
 687 else
 688 PLATFORM_LIBGCC := -L $(shell dirname `$(CC) $(c_flags) -print-libgcc-file-name`) -lgcc
 689 endif
 690 PLATFORM_LIBS += $(PLATFORM_LIBGCC)
 691 export PLATFORM_LIBS
 692 export PLATFORM_LIBGCC
 693
 694 # Special flags for CPP when processing the linker script.
 695 # Pass the version down so we can handle backwards compatibility
 696 # on the fly.
 697 LDPPFLAGS += \
 698         -include $(srctree)/include/u-boot/u-boot.lds.h \
 699         -DCPUDIR=$(CPUDIR) \
 700         $(shell $(LD) --version | \
 701           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
 702
 703 #########################################################################
 704 #########################################################################
 705
 706 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
 707 BOARD_SIZE_CHECK = \
 708         @actual=`wc -c $@ | awk '{print $$1}'`; \
 709         limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
 710         if test $$actual -gt $$limit; then \
 711                 echo "$@ exceeds file size limit:" >&2 ; \
 712                 echo "  limit:  $$limit bytes" >&2 ; \
 713                 echo "  actual: $$actual bytes" >&2 ; \
 714                 echo "  excess: $$((actual - limit)) bytes" >&2; \
 715                 exit 1; \
 716         fi
 717 else
 718 BOARD_SIZE_CHECK =
 719 endif
 720
 721 # Statically apply RELA-style relocations (currently arm64 only)
 722 ifneq ($(CONFIG_STATIC_RELA),)
 723 # $(1) is u-boot ELF, $(2) is u-boot bin, $(3) is text base
 724 DO_STATIC_RELA = \
 725         start=$$($(NM) $(1) | grep __rel_dyn_start | cut -f 1 -d ' '); \
 726         end=$$($(NM) $(1) | grep __rel_dyn_end | cut -f 1 -d ' '); \
 727         tools/relocate-rela $(2) $(3) $$start $$end
 728 else
 729 DO_STATIC_RELA =
 730 endif
 731
 732 # Always append ALL so that arch config.mk's can add custom ones
 733 ALL-y += u-boot.srec u-boot.bin System.map u-boot.cfg binary_size_check
 734
 735 ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
 736 ifeq ($(CONFIG_SPL_FSL_PBL),y)
 737 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot-with-spl-pbl.bin
 738 else
 739 ifneq ($(CONFIG_SECURE_BOOT), y)
 740 # For Secure Boot The Image needs to be signed and Header must also
 741 # be included. So The image has to be built explicitly
 742 ALL-$(CONFIG_RAMBOOT_PBL) += u-boot.pbl
 743 endif
 744 endif
 745 ALL-$(CONFIG_SPL) += spl/u-boot-spl.bin
 746 ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
 747 ALL-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
 748 ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin
 749 ifeq ($(CONFIG_SPL_FRAMEWORK),y)
 750 ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img
 751 endif
 752 ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb
 753 ifneq ($(CONFIG_SPL_TARGET),)
 754 ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 755 endif
 756 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 757
 758 ifneq ($(BUILD_ROM),)
 759 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
 760 endif
 761
 762 # enable combined SPL/u-boot/dtb rules for tegra
 763 ifneq ($(CONFIG_TEGRA),)
 764 ifeq ($(CONFIG_SPL),y)
 765 ifeq ($(CONFIG_OF_SEPARATE),y)
 766 ALL-y += u-boot-dtb-tegra.bin
 767 else
 768 ALL-y += u-boot-nodtb-tegra.bin
 769 endif
 770 endif
 771 endif
 772
 773 # Add optional build target if defined in board/cpu/soc headers
 774 ifneq ($(CONFIG_BUILD_TARGET),)
 775 ALL-y += $(CONFIG_BUILD_TARGET:"%"=%)
 776 endif
 777
 778 LDFLAGS_u-boot += $(LDFLAGS_FINAL)
 779 ifneq ($(CONFIG_SYS_TEXT_BASE),)
 780 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
 781 endif
 782
 783 # Normally we fill empty space with 0xff
 784 quiet_cmd_objcopy = OBJCOPY $@
 785 cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
 786         $(OBJCOPYFLAGS_$(@F)) $< $@
 787
 788 # Provide a version which does not do this, for use by EFI
 789 quiet_cmd_zobjcopy = OBJCOPY $@
 790 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 791
 792 quiet_cmd_mkimage = MKIMAGE $@
 793 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
 794         $(if $(KBUILD_VERBOSE:1=), >/dev/null)
 795
 796 quiet_cmd_cat = CAT     $@
 797 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
 798
 799 append = cat $(filter-out $< $(PHONY), $^) >> $@
 800
 801 quiet_cmd_pad_cat = CAT     $@
 802 cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
 803
 804 all:            $(ALL-y)
 805 ifneq ($(CONFIG_SYS_GENERIC_BOARD),y)
 806         @echo "===================== WARNING ======================"
 807         @echo "Please convert this board to generic board."
 808         @echo "Otherwise it will be removed by the end of 2014."
 809         @echo "See doc/README.generic-board for further information"
 810         @echo "===================================================="
 811 endif
 812 ifeq ($(CONFIG_DM_I2C_COMPAT),y)
 813         @echo "===================== WARNING ======================"
 814         @echo "This board uses CONFIG_DM_I2C_COMPAT. Please remove"
 815         @echo "(possibly in a subsequent patch in your series)"
 816         @echo "before sending patches to the mailing list."
 817         @echo "===================================================="
 818 endif
 819
 820 PHONY += dtbs
 821 dtbs dts/dt.dtb: checkdtc u-boot
 822         $(Q)$(MAKE) $(build)=dts dtbs
 823
 824 u-boot-dtb.bin: u-boot.bin dts/dt.dtb FORCE
 825         $(call if_changed,cat)
 826
 827 %.imx: %.bin
 828         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 829
 830 quiet_cmd_copy = COPY    $@
 831       cmd_copy = cp $< $@
 832
 833 u-boot.dtb: dts/dt.dtb
 834         $(call cmd,copy)
 835
 836 OBJCOPYFLAGS_u-boot.hex := -O ihex
 837
 838 OBJCOPYFLAGS_u-boot.srec := -O srec
 839
 840 u-boot.hex u-boot.srec: u-boot FORCE
 841         $(call if_changed,objcopy)
 842
 843 OBJCOPYFLAGS_u-boot.bin := -O binary \
 844                 $(if $(CONFIG_X86_RESET_VECTOR),-R .start16 -R .resetvec)
 845
 846 binary_size_check: u-boot.bin FORCE
 847         @file_size=$(shell wc -c u-boot.bin | awk '{print $$1}') ; \
 848         map_size=$(shell cat u-boot.map | \
 849                 awk '/_image_copy_start/ {start = $$1} /_image_binary_end/ {end = $$1} END {if (start != "" && end != "") print "ibase=16; " toupper(end) " - " toupper(start)}' \
 850                 | sed 's/0X//g' \
 851                 | bc); \
 852         if [ "" != "$$map_size" ]; then \
 853                 if test $$map_size -ne $$file_size; then \
 854                         echo "u-boot.map shows a binary size of $$map_size" >&2 ; \
 855                         echo "  but u-boot.bin shows $$file_size" >&2 ; \
 856                         exit 1; \
 857                 fi \
 858         fi
 859
 860 u-boot.bin: u-boot FORCE
 861         $(call if_changed,objcopy)
 862         $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE))
 863         $(BOARD_SIZE_CHECK)
 864
 865 u-boot.ldr:     u-boot
 866                 $(CREATE_LDR_ENV)
 867                 $(LDR) -T $(CONFIG_CPU) -c $@ $< $(LDR_FLAGS)
 868                 $(BOARD_SIZE_CHECK)
 869
 870 OBJCOPYFLAGS_u-boot.ldr.hex := -I binary -O ihex
 871
 872 OBJCOPYFLAGS_u-boot.ldr.srec := -I binary -O srec
 873
 874 u-boot.ldr.hex u-boot.ldr.srec: u-boot.ldr FORCE
 875         $(call if_changed,objcopy)
 876
 877 #
 878 # U-Boot entry point, needed for booting of full-blown U-Boot
 879 # from the SPL U-Boot version.
 880 #
 881 ifndef CONFIG_SYS_UBOOT_START
 882 CONFIG_SYS_UBOOT_START := 0
 883 endif
 884
 885 # Create a file containing the configuration options the image was built with
 886 quiet_cmd_cpp_cfg = CFG     $@
 887 cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
 888         -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
 889
 890 MKIMAGEFLAGS_u-boot.img = -A $(ARCH) -T firmware -C none -O u-boot \
 891         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
 892         -n "U-Boot $(UBOOTRELEASE) for $(BOARD) board"
 893
 894 MKIMAGEFLAGS_u-boot.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 895         -T kwbimage -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE)
 896
 897 MKIMAGEFLAGS_u-boot-spl.kwb = -n $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \
 898         -T kwbimage -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE)
 899
 900 MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
 901                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage
 902
 903 u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE
 904         $(call if_changed,mkimage)
 905
 906 u-boot-spl.kwb: u-boot.img spl/u-boot-spl.bin FORCE
 907         $(call if_changed,mkimage)
 908
 909 MKIMAGEFLAGS_u-boot-dtb.img = $(MKIMAGEFLAGS_u-boot.img)
 910
 911 u-boot-dtb.img: u-boot-dtb.bin FORCE
 912         $(call if_changed,mkimage)
 913
 914 u-boot.sha1:    u-boot.bin
 915                 tools/ubsha1 u-boot.bin
 916
 917 u-boot.dis:     u-boot
 918                 $(OBJDUMP) -d $< > $@
 919
 920 u-boot.cfg:     include/config.h
 921         $(call if_changed,cpp_cfg)
 922
 923 ifdef CONFIG_TPL
 924 SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
 925 else
 926 SPL_PAYLOAD := u-boot.bin
 927 endif
 928
 929 OBJCOPYFLAGS_u-boot-with-spl.bin = -I binary -O binary \
 930                                    --pad-to=$(CONFIG_SPL_PAD_TO)
 931 u-boot-with-spl.bin: spl/u-boot-spl.bin $(SPL_PAYLOAD) FORCE
 932         $(call if_changed,pad_cat)
 933
 934 MKIMAGEFLAGS_lpc32xx-spl.img = -T lpc32xximage -a $(CONFIG_SPL_TEXT_BASE)
 935
 936 lpc32xx-spl.img: spl/u-boot-spl.bin FORCE
 937         $(call if_changed,mkimage)
 938
 939 OBJCOPYFLAGS_lpc32xx-boot-0.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 940
 941 lpc32xx-boot-0.bin: lpc32xx-spl.img
 942         $(call if_changed,objcopy)
 943
 944 OBJCOPYFLAGS_lpc32xx-boot-1.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 945
 946 lpc32xx-boot-1.bin: lpc32xx-spl.img
 947         $(call if_changed,objcopy)
 948
 949 lpc32xx-full.bin: lpc32xx-boot-0.bin lpc32xx-boot-1.bin u-boot.img
 950         $(call if_changed,cat)
 951
 952 CLEAN_FILES += lpc32xx-*
 953
 954 OBJCOPYFLAGS_u-boot-with-tpl.bin = -I binary -O binary \
 955                                    --pad-to=$(CONFIG_TPL_PAD_TO)
 956 tpl/u-boot-with-tpl.bin: tpl/u-boot-tpl.bin u-boot.bin FORCE
 957         $(call if_changed,pad_cat)
 958
 959 SPL: spl/u-boot-spl.bin FORCE
 960         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 961
 962 u-boot-with-spl.imx u-boot-with-nand-spl.imx: SPL u-boot.bin FORCE
 963         $(Q)$(MAKE) $(build)=arch/arm/imx-common $@
 964
 965 MKIMAGEFLAGS_u-boot.ubl = -n $(UBL_CONFIG) -T ublimage -e $(CONFIG_SYS_TEXT_BASE)
 966
 967 u-boot.ubl: u-boot-with-spl.bin FORCE
 968         $(call if_changed,mkimage)
 969
 970 MKIMAGEFLAGS_u-boot-spl.ais = -s -n $(if $(CONFIG_AIS_CONFIG_FILE), \
 971         $(srctree)/$(CONFIG_AIS_CONFIG_FILE:"%"=%),"/dev/null") \
 972         -T aisimage -e $(CONFIG_SPL_TEXT_BASE)
 973 spl/u-boot-spl.ais: spl/u-boot-spl.bin FORCE
 974         $(call if_changed,mkimage)
 975
 976 OBJCOPYFLAGS_u-boot.ais = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO)
 977 u-boot.ais: spl/u-boot-spl.ais u-boot.img FORCE
 978         $(call if_changed,pad_cat)
 979
 980 u-boot-signed.sb: u-boot.bin spl/u-boot-spl.bin
 981         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot-signed.sb
 982 u-boot.sb: u-boot.bin spl/u-boot-spl.bin
 983         $(Q)$(MAKE) $(build)=arch/arm/cpu/arm926ejs/mxs u-boot.sb
 984
 985 # On x600 (SPEAr600) U-Boot is appended to U-Boot SPL.
 986 # Both images are created using mkimage (crc etc), so that the ROM
 987 # bootloader can check its integrity. Padding needs to be done to the
 988 # SPL image (with mkimage header) and not the binary. Otherwise the resulting image
 989 # which is loaded/copied by the ROM bootloader to SRAM doesn't fit.
 990 # The resulting image containing both U-Boot images is called u-boot.spr
 991 MKIMAGEFLAGS_u-boot-spl.img = -A $(ARCH) -T firmware -C none \
 992         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n XLOADER
 993 spl/u-boot-spl.img: spl/u-boot-spl.bin FORCE
 994         $(call if_changed,mkimage)
 995
 996 OBJCOPYFLAGS_u-boot.spr = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
 997                           --gap-fill=0xff
 998 u-boot.spr: spl/u-boot-spl.img u-boot.img FORCE
 999         $(call if_changed,pad_cat)
1000
1001 MKIMAGEFLAGS_u-boot-spl.gph = -A $(ARCH) -T gpimage -C none \
1002         -a $(CONFIG_SPL_TEXT_BASE) -e $(CONFIG_SPL_TEXT_BASE) -n SPL
1003 spl/u-boot-spl.gph: spl/u-boot-spl.bin FORCE
1004         $(call if_changed,mkimage)
1005
1006 OBJCOPYFLAGS_u-boot-spi.gph = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1007                           --gap-fill=0
1008 u-boot-spi.gph: spl/u-boot-spl.gph u-boot.img FORCE
1009         $(call if_changed,pad_cat)
1010
1011 MKIMAGEFLAGS_u-boot-nand.gph = -A $(ARCH) -T gpimage -C none \
1012         -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -n U-Boot
1013 u-boot-nand.gph: u-boot.bin FORCE
1014         $(call if_changed,mkimage)
1015         @dd if=/dev/zero bs=8 count=1 2>/dev/null >> $@
1016
1017 # x86 uses a large ROM. We fill it with 0xff, put the 16-bit stuff (including
1018 # reset vector) at the top, Intel ME descriptor at the bottom, and U-Boot in
1019 # the middle.
1020 ifneq ($(CONFIG_X86_RESET_VECTOR),)
1021 rom: u-boot.rom FORCE
1022
1023 IFDTOOL=$(objtree)/tools/ifdtool
1024 IFDTOOL_FLAGS  = -f 0:$(objtree)/u-boot.dtb
1025 IFDTOOL_FLAGS += -m 0x$(shell $(NM) u-boot |grep _dt_ucode_base_size |cut -d' ' -f1)
1026 IFDTOOL_FLAGS += -U $(CONFIG_SYS_TEXT_BASE):$(objtree)/u-boot.bin
1027 IFDTOOL_FLAGS += -w $(CONFIG_SYS_X86_START16):$(objtree)/u-boot-x86-16bit.bin
1028
1029 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1030 IFDTOOL_ME_FLAGS  = -D $(srctree)/board/$(BOARDDIR)/descriptor.bin
1031 IFDTOOL_ME_FLAGS += -i ME:$(srctree)/board/$(BOARDDIR)/me.bin
1032 endif
1033
1034 ifneq ($(CONFIG_HAVE_MRC),)
1035 IFDTOOL_FLAGS += -w $(CONFIG_X86_MRC_ADDR):$(srctree)/board/$(BOARDDIR)/mrc.bin
1036 endif
1037
1038 ifneq ($(CONFIG_HAVE_FSP),)
1039 IFDTOOL_FLAGS += -w $(CONFIG_FSP_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_FSP_FILE)
1040 endif
1041
1042 ifneq ($(CONFIG_HAVE_CMC),)
1043 IFDTOOL_FLAGS += -w $(CONFIG_CMC_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_CMC_FILE)
1044 endif
1045
1046 ifneq ($(CONFIG_HAVE_VGA_BIOS),)
1047 IFDTOOL_FLAGS += -w $(CONFIG_VGA_BIOS_ADDR):$(srctree)/board/$(BOARDDIR)/$(CONFIG_VGA_BIOS_FILE)
1048 endif
1049
1050 quiet_cmd_ifdtool = IFDTOOL $@
1051 cmd_ifdtool  = $(IFDTOOL) -c -r $(CONFIG_ROM_SIZE) u-boot.tmp;
1052 ifneq ($(CONFIG_HAVE_INTEL_ME),)
1053 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_ME_FLAGS) u-boot.tmp;
1054 endif
1055 cmd_ifdtool += $(IFDTOOL) $(IFDTOOL_FLAGS) u-boot.tmp;
1056 cmd_ifdtool += mv u-boot.tmp $@
1057
1058 u-boot.rom: u-boot-x86-16bit.bin u-boot-dtb.bin
1059         $(call if_changed,ifdtool)
1060
1061 OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
1062 u-boot-x86-16bit.bin: u-boot FORCE
1063         $(call if_changed,objcopy)
1064 endif
1065
1066 ifneq ($(CONFIG_SUNXI),)
1067 OBJCOPYFLAGS_u-boot-sunxi-with-spl.bin = -I binary -O binary \
1068                                    --pad-to=$(CONFIG_SPL_PAD_TO) --gap-fill=0xff
1069 u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin \
1070                         u-boot$(if $(CONFIG_OF_CONTROL),-dtb,).img FORCE
1071         $(call if_changed,pad_cat)
1072 endif
1073
1074 ifneq ($(CONFIG_TEGRA),)
1075 OBJCOPYFLAGS_u-boot-nodtb-tegra.bin = -O binary --pad-to=$(CONFIG_SYS_TEXT_BASE)
1076 u-boot-nodtb-tegra.bin: spl/u-boot-spl u-boot.bin FORCE
1077         $(call if_changed,pad_cat)
1078
1079 ifeq ($(CONFIG_OF_SEPARATE),y)
1080 u-boot-dtb-tegra.bin: u-boot-nodtb-tegra.bin dts/dt.dtb FORCE
1081         $(call if_changed,cat)
1082 endif
1083 endif
1084
1085 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
1086         $(call if_changed,cat)
1087
1088 #Add a target to create boot binary having SPL binary in PBI format
1089 #concatenated with u-boot binary. It is need by PowerPC SoC having
1090 #internal SRAM <= 512KB.
1091 MKIMAGEFLAGS_u-boot-spl.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \
1092                 -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage \
1093                 -A $(ARCH) -a $(CONFIG_SPL_TEXT_BASE)
1094
1095 spl/u-boot-spl.pbl: spl/u-boot-spl.bin FORCE
1096         $(call if_changed,mkimage)
1097
1098 ifeq ($(ARCH),arm)
1099 UBOOT_BINLOAD := u-boot.img
1100 else
1101 UBOOT_BINLOAD := u-boot.bin
1102 endif
1103
1104 OBJCOPYFLAGS_u-boot-with-spl-pbl.bin = -I binary -O binary --pad-to=$(CONFIG_SPL_PAD_TO) \
1105                           --gap-fill=0xff
1106
1107 u-boot-with-spl-pbl.bin: spl/u-boot-spl.pbl $(UBOOT_BINLOAD) FORCE
1108         $(call if_changed,pad_cat)
1109
1110 # PPC4xx needs the SPL at the end of the image, since the reset vector
1111 # is located at 0xfffffffc. So we can't use the "u-boot-img.bin" target
1112 # and need to introduce a new build target with the full blown U-Boot
1113 # at the start padded up to the start of the SPL image. And then concat
1114 # the SPL image to the end.
1115
1116 OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
1117         --pad-to=$(CONFIG_UBOOT_PAD_TO) --gap-fill=0xff
1118 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
1119         $(call if_changed,pad_cat)
1120
1121 # Create a new ELF from a raw binary file.  This is useful for arm64
1122 # where static relocation needs to be performed on the raw binary,
1123 # but certain simulators only accept an ELF file (but don't do the
1124 # relocation).
1125 # FIXME refactor dts/Makefile to share target/arch detection
1126 u-boot.elf: u-boot.bin
1127         @$(OBJCOPY)  -B aarch64 -I binary -O elf64-littleaarch64 \
1128                 $< u-boot-elf.o
1129         @$(LD) u-boot-elf.o -o $@ \
1130                 --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
1131                 -Ttext=$(CONFIG_SYS_TEXT_BASE)
1132
1133 # Rule to link u-boot
1134 # May be overridden by arch/$(ARCH)/config.mk
1135 quiet_cmd_u-boot__ ?= LD      $@
1136       cmd_u-boot__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_u-boot) -o $@ \
1137       -T u-boot.lds $(u-boot-init)                             \
1138       --start-group $(u-boot-main) --end-group                 \
1139       $(PLATFORM_LIBS) -Map u-boot.map
1140
1141 quiet_cmd_smap = GEN     common/system_map.o
1142 cmd_smap = \
1143         smap=`$(call SYSTEM_MAP,u-boot) | \
1144                 awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
1145         $(CC) $(c_flags) -DSYSTEM_MAP="\"$${smap}\"" \
1146                 -c $(srctree)/common/system_map.c -o common/system_map.o
1147
1148 u-boot: $(u-boot-init) $(u-boot-main) u-boot.lds
1149         $(call if_changed,u-boot__)
1150 ifeq ($(CONFIG_KALLSYMS),y)
1151         $(call cmd,smap)
1152         $(call cmd,u-boot__) common/system_map.o
1153 endif
1154
1155 # The actual objects are generated when descending,
1156 # make sure no implicit rule kicks in
1157 $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ;
1158
1159 # Handle descending into subdirectories listed in $(vmlinux-dirs)
1160 # Preset locale variables to speed up the build process. Limit locale
1161 # tweaks to this spot to avoid wrong language settings when running
1162 # make menuconfig etc.
1163 # Error messages still appears in the original language
1164
1165 PHONY += $(u-boot-dirs)
1166 $(u-boot-dirs): prepare scripts
1167         $(Q)$(MAKE) $(build)=$@
1168
1169 tools: prepare
1170 # The "tools" are needed early
1171 $(filter-out tools, $(u-boot-dirs)): tools
1172 # The "examples" conditionally depend on U-Boot (say, when USE_PRIVATE_LIBGCC
1173 # is "yes"), so compile examples after U-Boot is compiled.
1174 examples: $(filter-out examples, $(u-boot-dirs))
1175
1176 define filechk_uboot.release
1177         echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1178 endef
1179
1180 # Store (new) UBOOTRELEASE string in include/config/uboot.release
1181 include/config/uboot.release: include/config/auto.conf FORCE
1182         $(call filechk,uboot.release)
1183
1184
1185 # Things we need to do before we recursively start building the kernel
1186 # or the modules are listed in "prepare".
1187 # A multi level approach is used. prepareN is processed before prepareN-1.
1188 # archprepare is used in arch Makefiles and when processed asm symlink,
1189 # version.h and scripts_basic is processed / created.
1190
1191 # Listed in dependency order
1192 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
1193
1194 # prepare3 is used to check if we are building in a separate output directory,
1195 # and if so do:
1196 # 1) Check that make has not been executed in the kernel src $(srctree)
1197 prepare3: include/config/uboot.release
1198 ifneq ($(KBUILD_SRC),)
1199         @$(kecho) '  Using $(srctree) as source for U-Boot'
1200         $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1201                 echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
1202                 echo >&2 "  in the '$(srctree)' directory.";\
1203                 /bin/false; \
1204         fi;
1205 endif
1206
1207 # prepare2 creates a makefile if using a separate output directory
1208 prepare2: prepare3 outputmakefile
1209
1210 prepare1: prepare2 $(version_h) $(timestamp_h) \
1211                    include/config/auto.conf
1212 ifeq ($(CONFIG_HAVE_GENERIC_BOARD),)
1213 ifeq ($(CONFIG_SYS_GENERIC_BOARD),y)
1214         @echo >&2 "  Your architecture does not support generic board."
1215         @echo >&2 "  Please undefine CONFIG_SYS_GENERIC_BOARD in your board config file."
1216         @/bin/false
1217 endif
1218 endif
1219 ifeq ($(wildcard $(LDSCRIPT)),)
1220         @echo >&2 "  Could not find linker script."
1221         @/bin/false
1222 endif
1223
1224 archprepare: prepare1 scripts_basic
1225
1226 prepare0: archprepare FORCE
1227         $(Q)$(MAKE) $(build)=.
1228
1229 # All the preparing..
1230 prepare: prepare0
1231
1232 # Generate some files
1233 # ---------------------------------------------------------------------------
1234
1235 define filechk_version.h
1236         (echo \#define PLAIN_VERSION \"$(UBOOTRELEASE)\"; \
1237         echo \#define U_BOOT_VERSION \"U-Boot \" PLAIN_VERSION; \
1238         echo \#define CC_VERSION_STRING \"$$($(CC) --version | head -n 1)\"; \
1239         echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; )
1240 endef
1241
1242 define filechk_timestamp.h
1243         (SOURCE_DATE="$${SOURCE_DATE_EPOCH:+@$$SOURCE_DATE_EPOCH}"; \
1244         LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
1245         LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_TIME "%T"'; \
1246         LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_TZ "%z"' )
1247 endef
1248
1249 $(version_h): include/config/uboot.release FORCE
1250         $(call filechk,version.h)
1251
1252 $(timestamp_h): $(srctree)/Makefile FORCE
1253         $(call filechk,timestamp.h)
1254
1255 # ---------------------------------------------------------------------------
1256 quiet_cmd_cpp_lds = LDS     $@
1257 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
1258                 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
1259
1260 u-boot.lds: $(LDSCRIPT) prepare FORCE
1261         $(call if_changed_dep,cpp_lds)
1262
1263 spl/u-boot-spl.bin: spl/u-boot-spl
1264         @:
1265 spl/u-boot-spl: tools prepare $(if $(CONFIG_OF_SEPARATE),dts/dt.dtb)
1266         $(Q)$(MAKE) obj=spl -f $(srctree)/scripts/Makefile.spl all
1267
1268 spl/sunxi-spl.bin: spl/u-boot-spl
1269         @:
1270
1271 tpl/u-boot-tpl.bin: tools prepare
1272         $(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
1273
1274 TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
1275
1276 FIND := find
1277 FINDFLAGS := -L
1278
1279 tags ctags:
1280                 ctags -w -o ctags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1281                                                 -name '*.[chS]' -print`
1282                 ln -s ctags tags
1283
1284 etags:
1285                 etags -a -o etags `$(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) \
1286                                                 -name '*.[chS]' -print`
1287 cscope:
1288                 $(FIND) $(FINDFLAGS) $(TAG_SUBDIRS) -name '*.[chS]' -print > \
1289                                                 cscope.files
1290                 cscope -b -q -k
1291
1292 SYSTEM_MAP = \
1293                 $(NM) $1 | \
1294                 grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
1295                 LC_ALL=C sort
1296 System.map:     u-boot
1297                 @$(call SYSTEM_MAP,$<) > $@
1298
1299 checkdtc:
1300         @if test $(call dtc-version) -lt 0104; then \
1301                 echo '*** Your dtc is too old, please upgrade to dtc 1.4 or newer'; \
1302                 false; \
1303         fi
1304
1305 #########################################################################
1306
1307 # ARM relocations should all be R_ARM_RELATIVE (32-bit) or
1308 # R_AARCH64_RELATIVE (64-bit).
1309 checkarmreloc: u-boot
1310         @RELOC="`$(CROSS_COMPILE)readelf -r -W $< | cut -d ' ' -f 4 | \
1311                 grep R_A | sort -u`"; \
1312         if test "$$RELOC" != "R_ARM_RELATIVE" -a \
1313                  "$$RELOC" != "R_AARCH64_RELATIVE"; then \
1314                 echo "$< contains unexpected relocations: $$RELOC"; \
1315                 false; \
1316         fi
1317
1318 env: scripts_basic
1319         $(Q)$(MAKE) $(build)=tools/$@
1320
1321 tools-only: scripts_basic $(version_h) $(timestamp_h)
1322         $(Q)$(MAKE) $(build)=tools
1323
1324 tools-all: export HOST_TOOLS_ALL=y
1325 tools-all: env tools ;
1326
1327 cross_tools: export CROSS_BUILD_TOOLS=y
1328 cross_tools: tools ;
1329
1330 .PHONY : CHANGELOG
1331 CHANGELOG:
1332         git log --no-merges U-Boot-1_1_5.. | \
1333         unexpand -a | sed -e 's/\s\s*$$//' > $@
1334
1335 include/license.h: tools/bin2header COPYING
1336         cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
1337 #########################################################################
1338
1339 ###
1340 # Cleaning is done on three levels.
1341 # make clean     Delete most generated files
1342 #                Leave enough to build external modules
1343 # make mrproper  Delete the current configuration, and all generated files
1344 # make distclean Remove editor backup files, patch leftover files and the like
1345
1346 # Directories & files removed with 'make clean'
1347 CLEAN_DIRS  += $(MODVERDIR) \
1348                $(foreach d, spl tpl, $(patsubst %,$d/%, \
1349                         $(filter-out include, $(shell ls -1 $d 2>/dev/null))))
1350
1351 CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
1352                boot* u-boot* MLO* SPL System.map
1353
1354 # Directories & files removed with 'make mrproper'
1355 MRPROPER_DIRS  += include/config include/generated spl tpl \
1356                   .tmp_objdiff
1357 MRPROPER_FILES += .config .config.old include/autoconf.mk* include/config.h \
1358                   ctags etags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1359
1360 # clean - Delete most, but leave enough to build external modules
1361 #
1362 clean: rm-dirs  := $(CLEAN_DIRS)
1363 clean: rm-files := $(CLEAN_FILES)
1364
1365 clean-dirs      := $(foreach f,$(u-boot-alldirs),$(if $(wildcard $(srctree)/$f/Makefile),$f))
1366
1367 clean-dirs      := $(addprefix _clean_, $(clean-dirs) doc/DocBook)
1368
1369 PHONY += $(clean-dirs) clean archclean
1370 $(clean-dirs):
1371         $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1372
1373 # TODO: Do not use *.cfgtmp
1374 clean: $(clean-dirs)
1375         $(call cmd,rmdirs)
1376         $(call cmd,rmfiles)
1377         @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1378                 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1379                 -o -name '*.ko.*' -o -name '*.su' -o -name '*.cfgtmp' \
1380                 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1381                 -o -name '*.symtypes' -o -name 'modules.order' \
1382                 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1383                 -o -name '*.gcno' \) -type f -print | xargs rm -f
1384
1385 # mrproper - Delete all generated files, including .config
1386 #
1387 mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
1388 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1389 mrproper-dirs      := $(addprefix _mrproper_,scripts)
1390
1391 PHONY += $(mrproper-dirs) mrproper archmrproper
1392 $(mrproper-dirs):
1393         $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1394
1395 mrproper: clean $(mrproper-dirs)
1396         $(call cmd,rmdirs)
1397         $(call cmd,rmfiles)
1398         @rm -f arch/*/include/asm/arch
1399
1400 # distclean
1401 #
1402 PHONY += distclean
1403
1404 distclean: mrproper
1405         @find $(srctree) $(RCS_FIND_IGNORE) \
1406                 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1407                 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1408                 -o -name '.*.rej' -o -name '*%' -o -name 'core' \
1409                 -o -name '*.pyc' \) \
1410                 -type f -print | xargs rm -f
1411         @rm -f boards.cfg
1412
1413 backup:
1414         F=`basename $(srctree)` ; cd .. ; \
1415         gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
1416
1417 help:
1418         @echo  'Cleaning targets:'
1419         @echo  '  clean           - Remove most generated files but keep the config'
1420         @echo  '  mrproper        - Remove all generated files + config + various backup files'
1421         @echo  '  distclean       - mrproper + remove editor backup and patch files'
1422         @echo  ''
1423         @echo  'Configuration targets:'
1424         @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1425         @echo  ''
1426         @echo  'Other generic targets:'
1427         @echo  '  all             - Build all necessary images depending on configuration'
1428         @echo  '* u-boot          - Build the bare u-boot'
1429         @echo  '  dir/            - Build all files in dir and below'
1430         @echo  '  dir/file.[oisS] - Build specified target only'
1431         @echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
1432         @echo  '                    (requires a recent binutils and recent build (System.map))'
1433         @echo  '  tags/ctags      - Generate ctags file for editors'
1434         @echo  '  etags           - Generate etags file for editors'
1435         @echo  '  cscope          - Generate cscope index'
1436         @echo  '  ubootrelease    - Output the release version string (use with make -s)'
1437         @echo  '  ubootversion    - Output the version stored in Makefile (use with make -s)'
1438         @echo  ''
1439         @echo  'Static analysers'
1440         @echo  '  checkstack      - Generate a list of stack hogs'
1441         @echo  ''
1442         @echo  'Documentation targets:'
1443         @$(MAKE) -f $(srctree)/doc/DocBook/Makefile dochelp
1444         @echo  ''
1445         @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1446         @echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1447         @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
1448         @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
1449         @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
1450         @echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1451         @echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
1452         @echo  '                1: warnings which may be relevant and do not occur too often'
1453         @echo  '                2: warnings which occur quite often but may still be relevant'
1454         @echo  '                3: more obscure warnings, can most likely be ignored'
1455         @echo  '                Multiple levels can be combined with W=12 or W=123'
1456         @echo  ''
1457         @echo  'Execute "make" or "make all" to build all targets marked with [*] '
1458         @echo  'For further info see the ./README file'
1459
1460
1461 # Documentation targets
1462 # ---------------------------------------------------------------------------
1463 %docs: scripts_basic FORCE
1464         $(Q)$(MAKE) $(build)=scripts build_docproc
1465         $(Q)$(MAKE) $(build)=doc/DocBook $@
1466
1467 # Dummies...
1468 PHONY += prepare scripts
1469 prepare: ;
1470 scripts: ;
1471
1472 endif #ifeq ($(config-targets),1)
1473 endif #ifeq ($(mixed-targets),1)
1474
1475 PHONY += checkstack ubootrelease ubootversion
1476
1477 checkstack:
1478         $(OBJDUMP) -d u-boot $$(find . -name u-boot-spl) | \
1479         $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1480
1481 ubootrelease:
1482         @echo "$(UBOOTVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1483
1484 ubootversion:
1485         @echo $(UBOOTVERSION)
1486
1487 # Single targets
1488 # ---------------------------------------------------------------------------
1489 # Single targets are compatible with:
1490 # - build with mixed source and output
1491 # - build with separate output dir 'make O=...'
1492 # - external modules
1493 #
1494 #  target-dir => where to store outputfile
1495 #  build-dir  => directory in kernel source tree to use
1496
1497 ifeq ($(KBUILD_EXTMOD),)
1498         build-dir  = $(patsubst %/,%,$(dir $@))
1499         target-dir = $(dir $@)
1500 else
1501         zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1502         build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1503         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1504 endif
1505
1506 %.s: %.c prepare scripts FORCE
1507         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1508 %.i: %.c prepare scripts FORCE
1509         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1510 %.o: %.c prepare scripts FORCE
1511         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1512 %.lst: %.c prepare scripts FORCE
1513         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1514 %.s: %.S prepare scripts FORCE
1515         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1516 %.o: %.S prepare scripts FORCE
1517         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1518 %.symtypes: %.c prepare scripts FORCE
1519         $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1520
1521 # Modules
1522 /: prepare scripts FORCE
1523         $(cmd_crmodverdir)
1524         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1525         $(build)=$(build-dir)
1526 %/: prepare scripts FORCE
1527         $(cmd_crmodverdir)
1528         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1529         $(build)=$(build-dir)
1530 %.ko: prepare scripts FORCE
1531         $(cmd_crmodverdir)
1532         $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
1533         $(build)=$(build-dir) $(@:.ko=.o)
1534         $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1535
1536 # FIXME Should go into a make.lib or something
1537 # ===========================================================================
1538
1539 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
1540       cmd_rmdirs = rm -rf $(rm-dirs)
1541
1542 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
1543       cmd_rmfiles = rm -f $(rm-files)
1544
1545 # read all saved command lines
1546
1547 targets := $(wildcard $(sort $(targets)))
1548 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1549
1550 ifneq ($(cmd_files),)
1551   $(cmd_files): ;       # Do not try to update included dependency files
1552   include $(cmd_files)
1553 endif
1554
1555 endif   # skip-makefile
1556
1557 PHONY += FORCE
1558 FORCE:
1559
1560 # Declare the contents of the .PHONY variable as phony.  We keep that
1561 # information in a variable so we can use it in if_changed and friends.
1562 .PHONY: $(PHONY)