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      1 # Copyright 2012 the V8 project authors. All rights reserved.
      2 # Redistribution and use in source and binary forms, with or without
      3 # modification, are permitted provided that the following conditions are
      4 # met:
      5 #
      6 #     * Redistributions of source code must retain the above copyright
      7 #       notice, this list of conditions and the following disclaimer.
      8 #     * Redistributions in binary form must reproduce the above
      9 #       copyright notice, this list of conditions and the following
     10 #       disclaimer in the documentation and/or other materials provided
     11 #       with the distribution.
     12 #     * Neither the name of Google Inc. nor the names of its
     13 #       contributors may be used to endorse or promote products derived
     14 #       from this software without specific prior written permission.
     15 #
     16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 
     29 # Variable default definitions. Override them by exporting them in your shell.
     30 CXX ?= g++
     31 LINK ?= g++
     32 OUTDIR ?= out
     33 TESTJOBS ?=
     34 GYPFLAGS ?=
     35 TESTFLAGS ?=
     36 ANDROID_NDK_ROOT ?=
     37 ANDROID_NDK_HOST_ARCH ?=
     38 ANDROID_TOOLCHAIN ?=
     39 ANDROID_V8 ?= /data/local/tmp/v8
     40 NACL_SDK_ROOT ?=
     41 
     42 # Special build flags. Use them like this: "make library=shared"
     43 
     44 # library=shared || component=shared_library
     45 ifeq ($(library), shared)
     46   GYPFLAGS += -Dcomponent=shared_library
     47 endif
     48 ifdef component
     49   GYPFLAGS += -Dcomponent=$(component)
     50 endif
     51 # console=readline
     52 ifdef console
     53   GYPFLAGS += -Dconsole=$(console)
     54 endif
     55 # disassembler=on
     56 ifeq ($(disassembler), on)
     57   GYPFLAGS += -Dv8_enable_disassembler=1
     58 endif
     59 # objectprint=on
     60 ifeq ($(objectprint), on)
     61   GYPFLAGS += -Dv8_object_print=1
     62 endif
     63 # verifyheap=on
     64 ifeq ($(verifyheap), on)
     65   GYPFLAGS += -Dv8_enable_verify_heap=1
     66 endif
     67 # backtrace=off
     68 ifeq ($(backtrace), off)
     69   GYPFLAGS += -Dv8_enable_backtrace=0
     70 else
     71   GYPFLAGS += -Dv8_enable_backtrace=1
     72 endif
     73 # verifypredictable=on
     74 ifeq ($(verifypredictable), on)
     75   GYPFLAGS += -Dv8_enable_verify_predictable=1
     76 endif
     77 # snapshot=off
     78 ifeq ($(snapshot), off)
     79   GYPFLAGS += -Dv8_use_snapshot='false'
     80 endif
     81 # extrachecks=on/off
     82 ifeq ($(extrachecks), on)
     83   GYPFLAGS += -Dv8_enable_extra_checks=1 -Dv8_enable_handle_zapping=1
     84 endif
     85 ifeq ($(extrachecks), off)
     86   GYPFLAGS += -Dv8_enable_extra_checks=0 -Dv8_enable_handle_zapping=0
     87 endif
     88 # gdbjit=on/off
     89 ifeq ($(gdbjit), on)
     90   GYPFLAGS += -Dv8_enable_gdbjit=1
     91 endif
     92 ifeq ($(gdbjit), off)
     93   GYPFLAGS += -Dv8_enable_gdbjit=0
     94 endif
     95 # vtunejit=on
     96 ifeq ($(vtunejit), on)
     97   GYPFLAGS += -Dv8_enable_vtunejit=1
     98 endif
     99 # optdebug=on
    100 ifeq ($(optdebug), on)
    101   GYPFLAGS += -Dv8_optimized_debug=2
    102 endif
    103 # unalignedaccess=on
    104 ifeq ($(unalignedaccess), on)
    105   GYPFLAGS += -Dv8_can_use_unaligned_accesses=true
    106 endif
    107 # randomseed=12345, disable random seed via randomseed=0
    108 ifdef randomseed
    109   GYPFLAGS += -Dv8_random_seed=$(randomseed)
    110 endif
    111 # soname_version=1.2.3
    112 ifdef soname_version
    113   GYPFLAGS += -Dsoname_version=$(soname_version)
    114 endif
    115 # werror=no
    116 ifeq ($(werror), no)
    117   GYPFLAGS += -Dwerror=''
    118 endif
    119 # presubmit=no
    120 ifeq ($(presubmit), no)
    121   TESTFLAGS += --no-presubmit
    122 endif
    123 # strictaliasing=off (workaround for GCC-4.5)
    124 ifeq ($(strictaliasing), off)
    125   GYPFLAGS += -Dv8_no_strict_aliasing=1
    126 endif
    127 # regexp=interpreted
    128 ifeq ($(regexp), interpreted)
    129   GYPFLAGS += -Dv8_interpreted_regexp=1
    130 endif
    131 # i18nsupport=off
    132 ifeq ($(i18nsupport), off)
    133   GYPFLAGS += -Dv8_enable_i18n_support=0
    134   TESTFLAGS += --noi18n
    135 endif
    136 # deprecation_warnings=on
    137 ifeq ($(deprecationwarnings), on)
    138   GYPFLAGS += -Dv8_deprecation_warnings=1
    139 endif
    140 # asan=/path/to/clang++
    141 ifneq ($(strip $(asan)),)
    142   GYPFLAGS += -Dasan=1
    143   export CXX=$(asan)
    144   export CXX_host=$(asan)
    145   export LINK=$(asan)
    146   export ASAN_SYMBOLIZER_PATH="$(dir $(asan))llvm-symbolizer"
    147 endif
    148 
    149 # arm specific flags.
    150 # arm_version=<number | "default">
    151 ifneq ($(strip $(arm_version)),)
    152   GYPFLAGS += -Darm_version=$(arm_version)
    153 else
    154 # Deprecated (use arm_version instead): armv7=false/true
    155 ifeq ($(armv7), false)
    156   GYPFLAGS += -Darm_version=6
    157 else
    158 ifeq ($(armv7), true)
    159   GYPFLAGS += -Darm_version=7
    160 endif
    161 endif
    162 endif
    163 # hardfp=on/off. Deprecated, use armfloatabi
    164 ifeq ($(hardfp),on)
    165   GYPFLAGS += -Darm_float_abi=hard
    166 else
    167 ifeq ($(hardfp),off)
    168   GYPFLAGS += -Darm_float_abi=softfp
    169 endif
    170 endif
    171 # fpu: armfpu=xxx
    172 # xxx: vfp, vfpv3-d16, vfpv3, neon.
    173 ifeq ($(armfpu),)
    174   GYPFLAGS += -Darm_fpu=default
    175 else
    176   GYPFLAGS += -Darm_fpu=$(armfpu)
    177 endif
    178 # float abi: armfloatabi=softfp/hard
    179 ifeq ($(armfloatabi),)
    180 ifeq ($(hardfp),)
    181   GYPFLAGS += -Darm_float_abi=default
    182 endif
    183 else
    184   GYPFLAGS += -Darm_float_abi=$(armfloatabi)
    185 endif
    186 # armthumb=on/off
    187 ifeq ($(armthumb), off)
    188   GYPFLAGS += -Darm_thumb=0
    189 else
    190 ifeq ($(armthumb), on)
    191   GYPFLAGS += -Darm_thumb=1
    192 endif
    193 endif
    194 # arm_test_noprobe=on
    195 # With this flag set, by default v8 will only use features implied
    196 # by the compiler (no probe). This is done by modifying the default
    197 # values of enable_armv7, enable_vfp3, enable_32dregs and enable_neon.
    198 # Modifying these flags when launching v8 will enable the probing for
    199 # the specified values.
    200 ifeq ($(arm_test_noprobe), on)
    201   GYPFLAGS += -Darm_test_noprobe=on
    202 endif
    203 
    204 # ----------------- available targets: --------------------
    205 # - "builddeps": pulls in external dependencies for building
    206 # - "dependencies": pulls in all external dependencies
    207 # - "grokdump": rebuilds heap constants lists used by grokdump
    208 # - any arch listed in ARCHES (see below)
    209 # - any mode listed in MODES
    210 # - every combination <arch>.<mode>, e.g. "ia32.release"
    211 # - "native": current host's architecture, release mode
    212 # - any of the above with .check appended, e.g. "ia32.release.check"
    213 # - "android": cross-compile for Android/ARM
    214 # - "nacl" : cross-compile for Native Client (ia32 and x64)
    215 # - default (no target specified): build all DEFAULT_ARCHES and MODES
    216 # - "check": build all targets and run all tests
    217 # - "<arch>.clean" for any <arch> in ARCHES
    218 # - "clean": clean all ARCHES
    219 
    220 # ----------------- internal stuff ------------------------
    221 
    222 # Architectures and modes to be compiled. Consider these to be internal
    223 # variables, don't override them (use the targets instead).
    224 ARCHES = ia32 x64 x32 arm arm64 mips mipsel mips64el x87
    225 DEFAULT_ARCHES = ia32 x64 arm
    226 MODES = release debug optdebug
    227 DEFAULT_MODES = release debug
    228 ANDROID_ARCHES = android_ia32 android_arm android_arm64 android_mipsel android_x87
    229 NACL_ARCHES = nacl_ia32 nacl_x64
    230 
    231 # List of files that trigger Makefile regeneration:
    232 GYPFILES = build/all.gyp build/features.gypi build/standalone.gypi \
    233            build/toolchain.gypi samples/samples.gyp src/compiler/compiler.gyp \
    234            src/d8.gyp test/cctest/cctest.gyp tools/gyp/v8.gyp
    235 
    236 # If vtunejit=on, the v8vtune.gyp will be appended.
    237 ifeq ($(vtunejit), on)
    238   GYPFILES += src/third_party/vtune/v8vtune.gyp
    239 endif
    240 # Generates all combinations of ARCHES and MODES, e.g. "ia32.release".
    241 BUILDS = $(foreach mode,$(MODES),$(addsuffix .$(mode),$(ARCHES)))
    242 ANDROID_BUILDS = $(foreach mode,$(MODES), \
    243                    $(addsuffix .$(mode),$(ANDROID_ARCHES)))
    244 NACL_BUILDS = $(foreach mode,$(MODES), \
    245                    $(addsuffix .$(mode),$(NACL_ARCHES)))
    246 # Generates corresponding test targets, e.g. "ia32.release.check".
    247 CHECKS = $(addsuffix .check,$(BUILDS))
    248 QUICKCHECKS = $(addsuffix .quickcheck,$(BUILDS))
    249 ANDROID_CHECKS = $(addsuffix .check,$(ANDROID_BUILDS))
    250 NACL_CHECKS = $(addsuffix .check,$(NACL_BUILDS))
    251 # File where previously used GYPFLAGS are stored.
    252 ENVFILE = $(OUTDIR)/environment
    253 
    254 .PHONY: all check clean builddeps dependencies $(ENVFILE).new native \
    255         qc quickcheck $(QUICKCHECKS) \
    256         $(addsuffix .quickcheck,$(MODES)) $(addsuffix .quickcheck,$(ARCHES)) \
    257         $(ARCHES) $(MODES) $(BUILDS) $(CHECKS) $(addsuffix .clean,$(ARCHES)) \
    258         $(addsuffix .check,$(MODES)) $(addsuffix .check,$(ARCHES)) \
    259         $(ANDROID_ARCHES) $(ANDROID_BUILDS) $(ANDROID_CHECKS) \
    260         must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN \
    261         $(NACL_ARCHES) $(NACL_BUILDS) $(NACL_CHECKS) \
    262         must-set-NACL_SDK_ROOT
    263 
    264 # Target definitions. "all" is the default.
    265 all: $(DEFAULT_MODES)
    266 
    267 # Special target for the buildbots to use. Depends on $(OUTDIR)/Makefile
    268 # having been created before.
    269 buildbot:
    270 	$(MAKE) -C "$(OUTDIR)" BUILDTYPE=$(BUILDTYPE) \
    271 	        builddir="$(abspath $(OUTDIR))/$(BUILDTYPE)"
    272 
    273 # Compile targets. MODES and ARCHES are convenience targets.
    274 .SECONDEXPANSION:
    275 $(MODES): $(addsuffix .$$@,$(DEFAULT_ARCHES))
    276 
    277 $(ARCHES): $(addprefix $$@.,$(DEFAULT_MODES))
    278 
    279 # Defines how to build a particular target (e.g. ia32.release).
    280 $(BUILDS): $(OUTDIR)/Makefile.$$@
    281 	@$(MAKE) -C "$(OUTDIR)" -f Makefile.$@ \
    282 	         CXX="$(CXX)" LINK="$(LINK)" \
    283 	         BUILDTYPE=$(shell echo $(subst .,,$(suffix $@)) | \
    284 	                     python -c "print \
    285 	                     raw_input().replace('opt', '').capitalize()") \
    286 	         builddir="$(shell pwd)/$(OUTDIR)/$@"
    287 
    288 native: $(OUTDIR)/Makefile.native
    289 	@$(MAKE) -C "$(OUTDIR)" -f Makefile.native \
    290 	         CXX="$(CXX)" LINK="$(LINK)" BUILDTYPE=Release \
    291 	         builddir="$(shell pwd)/$(OUTDIR)/$@"
    292 
    293 $(ANDROID_ARCHES): $(addprefix $$@.,$(MODES))
    294 
    295 $(ANDROID_BUILDS): $(GYPFILES) $(ENVFILE) build/android.gypi \
    296                    must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN Makefile.android
    297 	@$(MAKE) -f Makefile.android $@ \
    298 	        ARCH="$(basename $@)" \
    299 	        MODE="$(subst .,,$(suffix $@))" \
    300 	        OUTDIR="$(OUTDIR)" \
    301 	        GYPFLAGS="$(GYPFLAGS)"
    302 
    303 $(NACL_ARCHES): $(addprefix $$@.,$(MODES))
    304 
    305 $(NACL_BUILDS): $(GYPFILES) $(ENVFILE) \
    306 		   Makefile.nacl must-set-NACL_SDK_ROOT
    307 	@$(MAKE) -f Makefile.nacl $@ \
    308 	        ARCH="$(basename $@)" \
    309 	        MODE="$(subst .,,$(suffix $@))" \
    310 	        OUTDIR="$(OUTDIR)" \
    311 	        GYPFLAGS="$(GYPFLAGS)"
    312 
    313 # Test targets.
    314 check: all
    315 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    316 	    --arch=$(shell echo $(DEFAULT_ARCHES) | sed -e 's/ /,/g') \
    317 	    $(TESTFLAGS)
    318 
    319 $(addsuffix .check,$(MODES)): $$(basename $$@)
    320 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    321 	    --mode=$(basename $@) $(TESTFLAGS)
    322 
    323 $(addsuffix .check,$(ARCHES)): $$(basename $$@)
    324 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    325 	    --arch=$(basename $@) $(TESTFLAGS)
    326 
    327 $(CHECKS): $$(basename $$@)
    328 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    329 	    --arch-and-mode=$(basename $@) $(TESTFLAGS)
    330 
    331 $(addsuffix .quickcheck,$(MODES)): $$(basename $$@)
    332 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    333 	    --mode=$(basename $@) $(TESTFLAGS) --quickcheck
    334 
    335 $(addsuffix .quickcheck,$(ARCHES)): $$(basename $$@)
    336 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    337 	    --arch=$(basename $@) $(TESTFLAGS) --quickcheck
    338 
    339 $(QUICKCHECKS): $$(basename $$@)
    340 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    341 	    --arch-and-mode=$(basename $@) $(TESTFLAGS) --quickcheck
    342 
    343 $(addsuffix .sync, $(ANDROID_BUILDS)): $$(basename $$@)
    344 	@tools/android-sync.sh $(basename $@) $(OUTDIR) \
    345 	                       $(shell pwd) $(ANDROID_V8)
    346 
    347 $(addsuffix .check, $(ANDROID_BUILDS)): $$(basename $$@).sync
    348 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    349 	     --arch-and-mode=$(basename $@) \
    350 	     --timeout=600 \
    351 	     --command-prefix="tools/android-run.py" $(TESTFLAGS)
    352 
    353 $(addsuffix .check, $(ANDROID_ARCHES)): \
    354                 $(addprefix $$(basename $$@).,$(MODES)).check
    355 
    356 $(addsuffix .check, $(NACL_BUILDS)): $$(basename $$@)
    357 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    358 	     --arch-and-mode=$(basename $@) \
    359 	     --timeout=600 --nopresubmit --noi18n \
    360 	     --command-prefix="tools/nacl-run.py"
    361 
    362 $(addsuffix .check, $(NACL_ARCHES)): \
    363                 $(addprefix $$(basename $$@).,$(MODES)).check
    364 
    365 native.check: native
    366 	@tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR)/native \
    367 	    --arch-and-mode=. $(TESTFLAGS)
    368 
    369 SUPERFASTTESTMODES = ia32.release
    370 FASTTESTMODES = $(SUPERFASTTESTMODES),x64.release,ia32.optdebug,x64.optdebug,arm.optdebug,arm64.release
    371 FASTCOMPILEMODES = $(FASTTESTMODES),arm64.optdebug
    372 
    373 COMMA = ,
    374 EMPTY =
    375 SPACE = $(EMPTY) $(EMPTY)
    376 quickcheck: $(subst $(COMMA),$(SPACE),$(FASTCOMPILEMODES))
    377 	tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    378 	    --arch-and-mode=$(SUPERFASTTESTMODES) $(TESTFLAGS) --quickcheck \
    379 	    --download-data mozilla webkit
    380 	tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \
    381 	    --arch-and-mode=$(FASTTESTMODES) $(TESTFLAGS) --quickcheck
    382 qc: quickcheck
    383 
    384 # Clean targets. You can clean each architecture individually, or everything.
    385 $(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES) $(NACL_ARCHES)):
    386 	rm -f $(OUTDIR)/Makefile.$(basename $@)*
    387 	rm -rf $(OUTDIR)/$(basename $@).release
    388 	rm -rf $(OUTDIR)/$(basename $@).debug
    389 	rm -rf $(OUTDIR)/$(basename $@).optdebug
    390 	find $(OUTDIR) -regex '.*\(host\|target\)\.$(basename $@).*\.mk' -delete
    391 
    392 native.clean:
    393 	rm -f $(OUTDIR)/Makefile.native
    394 	rm -rf $(OUTDIR)/native
    395 	find $(OUTDIR) -regex '.*\(host\|target\)\.native\.mk' -delete
    396 
    397 clean: $(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES) $(NACL_ARCHES)) native.clean gtags.clean
    398 
    399 # GYP file generation targets.
    400 OUT_MAKEFILES = $(addprefix $(OUTDIR)/Makefile.,$(BUILDS))
    401 $(OUT_MAKEFILES): $(GYPFILES) $(ENVFILE)
    402 	$(eval CXX_TARGET_ARCH:=$(shell $(CXX) -v 2>&1 | grep ^Target: | \
    403 	        cut -f 2 -d " " | cut -f 1 -d "-" ))
    404 	$(eval CXX_TARGET_ARCH:=$(subst aarch64,arm64,$(CXX_TARGET_ARCH)))
    405 	$(eval V8_TARGET_ARCH:=$(subst .,,$(suffix $(basename $@))))
    406 	PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(shell pwd)/build:$(PYTHONPATH):$(shell pwd)/build/gyp/pylib:$(PYTHONPATH)" \
    407 	GYP_GENERATORS=make \
    408 	build/gyp/gyp --generator-output="$(OUTDIR)" build/all.gyp \
    409 	              -Ibuild/standalone.gypi --depth=. \
    410 	              -Dv8_target_arch=$(V8_TARGET_ARCH) \
    411 	              $(if $(findstring $(CXX_TARGET_ARCH),$(V8_TARGET_ARCH)), \
    412 	              -Dtarget_arch=$(V8_TARGET_ARCH),) \
    413 	              $(if $(findstring optdebug,$@),-Dv8_optimized_debug=2,) \
    414 	              -S$(suffix $(basename $@))$(suffix $@) $(GYPFLAGS)
    415 
    416 $(OUTDIR)/Makefile.native: $(GYPFILES) $(ENVFILE)
    417 	PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(shell pwd)/build:$(PYTHONPATH):$(shell pwd)/build/gyp/pylib:$(PYTHONPATH)" \
    418 	GYP_GENERATORS=make \
    419 	build/gyp/gyp --generator-output="$(OUTDIR)" build/all.gyp \
    420 	              -Ibuild/standalone.gypi --depth=. -S.native $(GYPFLAGS)
    421 
    422 must-set-ANDROID_NDK_ROOT_OR_TOOLCHAIN:
    423 ifndef ANDROID_NDK_ROOT
    424 ifndef ANDROID_TOOLCHAIN
    425 	  $(error ANDROID_NDK_ROOT or ANDROID_TOOLCHAIN must be set))
    426 endif
    427 endif
    428 
    429 # Note that NACL_SDK_ROOT must be set to point to an appropriate
    430 # Native Client SDK before using this makefile. You can download
    431 # an SDK here:
    432 #   https://developers.google.com/native-client/sdk/download
    433 # The path indicated by NACL_SDK_ROOT will typically end with
    434 # a folder for a pepper version such as "pepper_25" that should
    435 # have "tools" and "toolchain" subdirectories.
    436 must-set-NACL_SDK_ROOT:
    437 ifndef NACL_SDK_ROOT
    438 	  $(error NACL_SDK_ROOT must be set)
    439 endif
    440 
    441 # Replaces the old with the new environment file if they're different, which
    442 # will trigger GYP to regenerate Makefiles.
    443 $(ENVFILE): $(ENVFILE).new
    444 	@if test -r $(ENVFILE) && cmp $(ENVFILE).new $(ENVFILE) > /dev/null; \
    445 	    then rm $(ENVFILE).new; \
    446 	    else mv $(ENVFILE).new $(ENVFILE); fi
    447 
    448 # Stores current GYPFLAGS in a file.
    449 $(ENVFILE).new:
    450 	@mkdir -p $(OUTDIR); echo "GYPFLAGS=$(GYPFLAGS)" > $(ENVFILE).new; \
    451 	    echo "CXX=$(CXX)" >> $(ENVFILE).new
    452 
    453 # Heap constants for grokdump.
    454 DUMP_FILE = tools/v8heapconst.py
    455 grokdump: ia32.release
    456 	@cat $(DUMP_FILE).tmpl > $(DUMP_FILE)
    457 	@$(OUTDIR)/ia32.release/d8 --dump-heap-constants >> $(DUMP_FILE)
    458 
    459 # Support for the GNU GLOBAL Source Code Tag System.
    460 gtags.files: $(GYPFILES) $(ENVFILE)
    461 	@find include src test -name '*.h' -o -name '*.cc' -o -name '*.c' > $@
    462 
    463 # We need to manually set the stack limit here, to work around bugs in
    464 # gmake-3.81 and global-5.7.1 on recent 64-bit Linux systems.
    465 GPATH GRTAGS GSYMS GTAGS: gtags.files $(shell cat gtags.files 2> /dev/null)
    466 	@bash -c 'ulimit -s 10240 && GTAGSFORCECPP=yes gtags -i -q -f $<'
    467 
    468 gtags.clean:
    469 	rm -f gtags.files GPATH GRTAGS GSYMS GTAGS
    470 
    471 # Dependencies. "builddeps" are dependencies required solely for building,
    472 # "dependencies" includes also dependencies required for development.
    473 # Remember to keep these in sync with the DEPS file.
    474 builddeps:
    475 	svn checkout --force http://gyp.googlecode.com/svn/trunk build/gyp \
    476 	    --revision 1831
    477 	if svn info third_party/icu 2>&1 | grep -q icu46 ; then \
    478 	  svn switch --force \
    479 	      https://src.chromium.org/chrome/trunk/deps/third_party/icu52 \
    480 	      third_party/icu --revision 277999 ; \
    481 	else \
    482 	  svn checkout --force \
    483 	      https://src.chromium.org/chrome/trunk/deps/third_party/icu52 \
    484 	      third_party/icu --revision 277999 ; \
    485 	fi
    486 	svn checkout --force http://googletest.googlecode.com/svn/trunk \
    487 	    testing/gtest --revision 692
    488 	svn checkout --force http://googlemock.googlecode.com/svn/trunk \
    489 	    testing/gmock --revision 485
    490 
    491 dependencies: builddeps
    492 	# The spec is a copy of the hooks in v8's DEPS file.
    493 	gclient sync -r fb782d4369d5ae04f17a2fceef7de5a63e50f07b --spec="solutions = [{u'managed': False, u'name': u'buildtools', u'url': u'https://chromium.googlesource.com/chromium/buildtools.git', u'custom_deps': {}, u'custom_hooks': [{u'name': u'clang_format_win',u'pattern': u'.',u'action': [u'download_from_google_storage',u'--no_resume',u'--platform=win32',u'--no_auth',u'--bucket',u'chromium-clang-format',u'-s',u'buildtools/win/clang-format.exe.sha1']},{u'name': u'clang_format_mac',u'pattern': u'.',u'action': [u'download_from_google_storage',u'--no_resume',u'--platform=darwin',u'--no_auth',u'--bucket',u'chromium-clang-format',u'-s',u'buildtools/mac/clang-format.sha1']},{u'name': u'clang_format_linux',u'pattern': u'.',u'action': [u'download_from_google_storage',u'--no_resume',u'--platform=linux*',u'--no_auth',u'--bucket',u'chromium-clang-format',u'-s',u'buildtools/linux64/clang-format.sha1']}],u'deps_file': u'.DEPS.git', u'safesync_url': u''}]"
    494