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. 30OUTDIR ?= out 31TESTJOBS ?= 32GYPFLAGS ?= 33TESTFLAGS ?= 34ANDROID_NDK_HOST_ARCH ?= 35ANDROID_V8 ?= /data/local/tmp/v8 36 37# Special build flags. Use them like this: "make library=shared" 38 39# library=shared || component=shared_library 40ifeq ($(library), shared) 41 GYPFLAGS += -Dcomponent=shared_library 42endif 43ifdef component 44 GYPFLAGS += -Dcomponent=$(component) 45endif 46# disassembler=on 47ifeq ($(disassembler), on) 48 GYPFLAGS += -Dv8_enable_disassembler=1 49endif 50# objectprint=on 51ifeq ($(objectprint), on) 52 GYPFLAGS += -Dv8_object_print=1 53endif 54# verifycsa=on 55ifeq ($(verifycsa), on) 56 GYPFLAGS += -Dv8_enable_verify_csa=1 57endif 58# verifyheap=on 59ifeq ($(verifyheap), on) 60 GYPFLAGS += -Dv8_enable_verify_heap=1 61endif 62# tracemaps=on 63ifeq ($(tracemaps), on) 64 GYPFLAGS += -Dv8_trace_maps=1 65endif 66# backtrace=off 67ifeq ($(backtrace), off) 68 GYPFLAGS += -Dv8_enable_backtrace=0 69else 70 GYPFLAGS += -Dv8_enable_backtrace=1 71endif 72# verifypredictable=on 73ifeq ($(verifypredictable), on) 74 GYPFLAGS += -Dv8_enable_verify_predictable=1 75endif 76# snapshot=off 77ifeq ($(snapshot), off) 78 GYPFLAGS += -Dv8_use_snapshot='false' 79endif 80ifeq ($(snapshot), external) 81 GYPFLAGS += -Dv8_use_external_startup_data=1 82endif 83# extrachecks=on/off 84ifeq ($(extrachecks), on) 85 GYPFLAGS += -Ddcheck_always_on=1 -Dv8_enable_handle_zapping=1 86endif 87ifeq ($(extrachecks), off) 88 GYPFLAGS += -Ddcheck_always_on=0 -Dv8_enable_handle_zapping=0 89endif 90# slowdchecks=on/off 91ifeq ($(slowdchecks), on) 92 GYPFLAGS += -Dv8_enable_slow_dchecks=1 93endif 94ifeq ($(slowdchecks), off) 95 GYPFLAGS += -Dv8_enable_slow_dchecks=0 96endif 97# debugsymbols=on 98ifeq ($(debugsymbols), on) 99 GYPFLAGS += -Drelease_extra_cflags=-ggdb3 100endif 101# gdbjit=on/off 102ifeq ($(gdbjit), on) 103 GYPFLAGS += -Dv8_enable_gdbjit=1 104endif 105ifeq ($(gdbjit), off) 106 GYPFLAGS += -Dv8_enable_gdbjit=0 107endif 108# vtunejit=on 109ifeq ($(vtunejit), on) 110 GYPFLAGS += -Dv8_enable_vtunejit=1 111endif 112# unalignedaccess=on 113ifeq ($(unalignedaccess), on) 114 GYPFLAGS += -Dv8_can_use_unaligned_accesses=true 115endif 116# randomseed=12345, disable random seed via randomseed=0 117ifdef randomseed 118 GYPFLAGS += -Dv8_random_seed=$(randomseed) 119endif 120# soname_version=1.2.3 121ifdef soname_version 122 GYPFLAGS += -Dsoname_version=$(soname_version) 123endif 124# werror=no 125ifeq ($(werror), no) 126 GYPFLAGS += -Dwerror='' 127endif 128# strictaliasing=off (workaround for GCC-4.5) 129ifeq ($(strictaliasing), off) 130 GYPFLAGS += -Dv8_no_strict_aliasing=1 131endif 132# regexp=interpreted 133ifeq ($(regexp), interpreted) 134 GYPFLAGS += -Dv8_interpreted_regexp=1 135endif 136# i18nsupport=off 137ifeq ($(i18nsupport), off) 138 GYPFLAGS += -Dv8_enable_i18n_support=0 139 TESTFLAGS += --noi18n 140endif 141# deprecationwarnings=on 142ifeq ($(deprecationwarnings), on) 143 GYPFLAGS += -Dv8_deprecation_warnings=1 144endif 145# vectorstores=on 146ifeq ($(vectorstores), on) 147 GYPFLAGS += -Dv8_vector_stores=1 148endif 149# imminentdeprecationwarnings=on 150ifeq ($(imminentdeprecationwarnings), on) 151 GYPFLAGS += -Dv8_imminent_deprecation_warnings=1 152endif 153# asan=on 154ifeq ($(asan), on) 155 GYPFLAGS += -Dasan=1 -Dclang=1 156 TESTFLAGS += --asan 157 ifeq ($(lsan), on) 158 GYPFLAGS += -Dlsan=1 159 endif 160endif 161ifdef embedscript 162 GYPFLAGS += -Dembed_script=$(embedscript) 163endif 164ifdef warmupscript 165 GYPFLAGS += -Dwarmup_script=$(warmupscript) 166endif 167ifeq ($(goma), on) 168 GYPFLAGS += -Duse_goma=1 169endif 170# v8_os_page_size=0, when 0 or not specified use build OS page size 171ifdef v8_os_page_size 172 ifneq ($(v8_os_page_size), 0) 173 ifneq ($(snapshot), off) 174 GYPFLAGS += -Dv8_os_page_size=$(v8_os_page_size) 175 endif 176 endif 177endif 178# arm specific flags. 179# arm_version=<number | "default"> 180ifneq ($(strip $(arm_version)),) 181 GYPFLAGS += -Darm_version=$(arm_version) 182else 183# Deprecated (use arm_version instead): armv7=false/true 184ifeq ($(armv7), false) 185 GYPFLAGS += -Darm_version=6 186else 187ifeq ($(armv7), true) 188 GYPFLAGS += -Darm_version=7 189endif 190endif 191endif 192# hardfp=on/off. Deprecated, use armfloatabi 193ifeq ($(hardfp),on) 194 GYPFLAGS += -Darm_float_abi=hard 195else 196ifeq ($(hardfp),off) 197 GYPFLAGS += -Darm_float_abi=softfp 198endif 199endif 200# fpu: armfpu=xxx 201# xxx: vfp, vfpv3-d16, vfpv3, neon. 202ifeq ($(armfpu),) 203 GYPFLAGS += -Darm_fpu=default 204else 205 GYPFLAGS += -Darm_fpu=$(armfpu) 206endif 207# float abi: armfloatabi=softfp/hard 208ifeq ($(armfloatabi),) 209ifeq ($(hardfp),) 210 GYPFLAGS += -Darm_float_abi=default 211endif 212else 213 GYPFLAGS += -Darm_float_abi=$(armfloatabi) 214endif 215# armthumb=on/off 216ifeq ($(armthumb), off) 217 GYPFLAGS += -Darm_thumb=0 218else 219ifeq ($(armthumb), on) 220 GYPFLAGS += -Darm_thumb=1 221endif 222endif 223# arm_test_noprobe=on 224# With this flag set, by default v8 will only use features implied 225# by the compiler (no probe). This is done by modifying the default 226# values of enable_armv7, enable_vfp3, enable_32dregs and enable_neon. 227# Modifying these flags when launching v8 will enable the probing for 228# the specified values. 229ifeq ($(arm_test_noprobe), on) 230 GYPFLAGS += -Darm_test_noprobe=on 231endif 232# Do not omit the frame pointer, needed for profiling with perf 233ifeq ($(no_omit_framepointer), on) 234 GYPFLAGS += -Drelease_extra_cflags=-fno-omit-frame-pointer 235endif 236 237ifdef android_ndk_root 238 GYPFLAGS += -Dandroid_ndk_root=$(android_ndk_root) 239 export ANDROID_NDK_ROOT = $(android_ndk_root) 240endif 241 242# ----------------- available targets: -------------------- 243# - "grokdump": rebuilds heap constants lists used by grokdump 244# - any arch listed in ARCHES (see below) 245# - any mode listed in MODES 246# - every combination <arch>.<mode>, e.g. "ia32.release" 247# - "native": current host's architecture, release mode 248# - any of the above with .check appended, e.g. "ia32.release.check" 249# - "android": cross-compile for Android/ARM 250# - default (no target specified): build all DEFAULT_ARCHES and MODES 251# - "check": build all targets and run all tests 252# - "<arch>.clean" for any <arch> in ARCHES 253# - "clean": clean all ARCHES 254 255# ----------------- internal stuff ------------------------ 256 257# Architectures and modes to be compiled. Consider these to be internal 258# variables, don't override them (use the targets instead). 259ARCHES = ia32 x64 arm arm64 mips mipsel mips64 mips64el x87 ppc ppc64 s390 \ 260 s390x 261ARCHES32 = ia32 arm mips mipsel x87 ppc s390 262DEFAULT_ARCHES = ia32 x64 arm 263MODES = release debug optdebug 264DEFAULT_MODES = release debug 265ANDROID_ARCHES = android_ia32 android_x64 android_arm android_arm64 \ 266 android_mipsel android_x87 267 268# List of files that trigger Makefile regeneration: 269GYPFILES = third_party/icu/icu.gypi third_party/icu/icu.gyp \ 270 gypfiles/shim_headers.gypi gypfiles/features.gypi \ 271 gypfiles/standalone.gypi \ 272 gypfiles/toolchain.gypi gypfiles/all.gyp gypfiles/mac/asan.gyp \ 273 test/cctest/cctest.gyp test/fuzzer/fuzzer.gyp \ 274 test/unittests/unittests.gyp src/v8.gyp \ 275 tools/parser-shell.gyp testing/gmock.gyp testing/gtest.gyp \ 276 buildtools/third_party/libc++abi/libc++abi.gyp \ 277 buildtools/third_party/libc++/libc++.gyp samples/samples.gyp \ 278 src/third_party/vtune/v8vtune.gyp src/d8.gyp 279 280# If vtunejit=on, the v8vtune.gyp will be appended. 281ifeq ($(vtunejit), on) 282 GYPFILES += src/third_party/vtune/v8vtune.gyp 283endif 284# Generates all combinations of ARCHES and MODES, e.g. "ia32.release". 285BUILDS = $(foreach mode,$(MODES),$(addsuffix .$(mode),$(ARCHES))) 286ANDROID_BUILDS = $(foreach mode,$(MODES), \ 287 $(addsuffix .$(mode),$(ANDROID_ARCHES))) 288# Generates corresponding test targets, e.g. "ia32.release.check". 289CHECKS = $(addsuffix .check,$(BUILDS)) 290QUICKCHECKS = $(addsuffix .quickcheck,$(BUILDS)) 291ANDROID_CHECKS = $(addsuffix .check,$(ANDROID_BUILDS)) 292# File where previously used GYPFLAGS are stored. 293ENVFILE = $(OUTDIR)/environment 294 295.PHONY: all check clean builddeps dependencies $(ENVFILE).new native \ 296 qc quickcheck $(QUICKCHECKS) turbocheck \ 297 $(addsuffix .quickcheck,$(MODES)) $(addsuffix .quickcheck,$(ARCHES)) \ 298 $(ARCHES) $(MODES) $(BUILDS) $(CHECKS) $(addsuffix .clean,$(ARCHES)) \ 299 $(addsuffix .check,$(MODES)) $(addsuffix .check,$(ARCHES)) \ 300 $(ANDROID_ARCHES) $(ANDROID_BUILDS) $(ANDROID_CHECKS) 301 302# Target definitions. "all" is the default. 303all: $(DEFAULT_MODES) 304 305# Special target for the buildbots to use. Depends on $(OUTDIR)/Makefile 306# having been created before. 307buildbot: 308 $(MAKE) -C "$(OUTDIR)" BUILDTYPE=$(BUILDTYPE) \ 309 builddir="$(abspath $(OUTDIR))/$(BUILDTYPE)" 310 311# Compile targets. MODES and ARCHES are convenience targets. 312.SECONDEXPANSION: 313$(MODES): $(addsuffix .$$@,$(DEFAULT_ARCHES)) 314 315$(ARCHES): $(addprefix $$@.,$(DEFAULT_MODES)) 316 317# Defines how to build a particular target (e.g. ia32.release). 318$(BUILDS): $(OUTDIR)/Makefile.$$@ 319 @$(MAKE) -C "$(OUTDIR)" -f Makefile.$@ \ 320 BUILDTYPE=$(shell echo $(subst .,,$(suffix $@)) | \ 321 python -c "print \ 322 raw_input().replace('opt', '').capitalize()") \ 323 builddir="$(shell pwd)/$(OUTDIR)/$@" 324 325native: $(OUTDIR)/Makefile.native 326 @$(MAKE) -C "$(OUTDIR)" -f Makefile.native \ 327 BUILDTYPE=Release \ 328 builddir="$(shell pwd)/$(OUTDIR)/$@" 329 330$(ANDROID_ARCHES): $(addprefix $$@.,$(MODES)) 331 332$(ANDROID_BUILDS): $(GYPFILES) $(ENVFILE) Makefile.android 333 @$(MAKE) -f Makefile.android $@ \ 334 ARCH="$(basename $@)" \ 335 MODE="$(subst .,,$(suffix $@))" \ 336 OUTDIR="$(OUTDIR)" \ 337 GYPFLAGS="$(GYPFLAGS)" 338 339# Test targets. 340check: all 341 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 342 --arch=$(shell echo $(DEFAULT_ARCHES) | sed -e 's/ /,/g') \ 343 $(TESTFLAGS) 344 345$(addsuffix .check,$(MODES)): $$(basename $$@) 346 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 347 --mode=$(basename $@) $(TESTFLAGS) 348 349$(addsuffix .check,$(ARCHES)): $$(basename $$@) 350 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 351 --arch=$(basename $@) $(TESTFLAGS) 352 353$(CHECKS): $$(basename $$@) 354 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 355 --arch-and-mode=$(basename $@) $(TESTFLAGS) 356 357$(addsuffix .quickcheck,$(MODES)): $$(basename $$@) 358 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 359 --mode=$(basename $@) $(TESTFLAGS) --quickcheck 360 361$(addsuffix .quickcheck,$(ARCHES)): $$(basename $$@) 362 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 363 --arch=$(basename $@) $(TESTFLAGS) --quickcheck 364 365$(QUICKCHECKS): $$(basename $$@) 366 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 367 --arch-and-mode=$(basename $@) $(TESTFLAGS) --quickcheck 368 369$(addsuffix .sync, $(ANDROID_BUILDS)): $$(basename $$@) 370 @tools/android-sync.sh $(basename $@) $(OUTDIR) \ 371 $(shell pwd) $(ANDROID_V8) 372 373$(addsuffix .check, $(ANDROID_BUILDS)): $$(basename $$@).sync 374 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 375 --arch-and-mode=$(basename $@) \ 376 --timeout=600 \ 377 --command-prefix="tools/android-run.py" $(TESTFLAGS) 378 379$(addsuffix .check, $(ANDROID_ARCHES)): \ 380 $(addprefix $$(basename $$@).,$(MODES)).check 381 382native.check: native 383 @tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR)/native \ 384 --arch-and-mode=. $(TESTFLAGS) 385 386SUPERFASTTESTMODES = ia32.release 387FASTTESTMODES = $(SUPERFASTTESTMODES),x64.release,ia32.optdebug,x64.optdebug,arm.optdebug,arm64.release 388FASTCOMPILEMODES = $(FASTTESTMODES),arm64.optdebug 389 390COMMA = , 391EMPTY = 392SPACE = $(EMPTY) $(EMPTY) 393quickcheck: $(subst $(COMMA),$(SPACE),$(FASTCOMPILEMODES)) 394 tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 395 --arch-and-mode=$(SUPERFASTTESTMODES) $(TESTFLAGS) --quickcheck \ 396 --download-data mozilla webkit 397 tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 398 --arch-and-mode=$(FASTTESTMODES) $(TESTFLAGS) --quickcheck 399qc: quickcheck 400 401turbocheck: $(subst $(COMMA),$(SPACE),$(FASTCOMPILEMODES)) 402 tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 403 --arch-and-mode=$(SUPERFASTTESTMODES) $(TESTFLAGS) \ 404 --quickcheck --variants=turbofan --download-data mozilla webkit 405 tools/run-tests.py $(TESTJOBS) --outdir=$(OUTDIR) \ 406 --arch-and-mode=$(FASTTESTMODES) $(TESTFLAGS) \ 407 --quickcheck --variants=turbofan 408tc: turbocheck 409 410# Clean targets. You can clean each architecture individually, or everything. 411$(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES)): 412 rm -f $(OUTDIR)/Makefile.$(basename $@)* 413 rm -rf $(OUTDIR)/$(basename $@).release 414 rm -rf $(OUTDIR)/$(basename $@).debug 415 rm -rf $(OUTDIR)/$(basename $@).optdebug 416 find $(OUTDIR) -regex '.*\(host\|target\)\.$(basename $@).*\.mk' -delete 417 418native.clean: 419 rm -f $(OUTDIR)/Makefile.native 420 rm -rf $(OUTDIR)/native 421 find $(OUTDIR) -regex '.*\(host\|target\)\.native\.mk' -delete 422 423clean: $(addsuffix .clean, $(ARCHES) $(ANDROID_ARCHES)) native.clean gtags.clean tags.clean 424 425# GYP file generation targets. 426OUT_MAKEFILES = $(addprefix $(OUTDIR)/Makefile.,$(BUILDS)) 427$(OUT_MAKEFILES): $(GYPFILES) $(ENVFILE) 428 $(eval CXX_TARGET_ARCH:=$(shell $(CXX) -v 2>&1 | grep ^Target: | \ 429 cut -f 2 -d " " | cut -f 1 -d "-" )) 430 $(eval CXX_TARGET_ARCH:=$(subst aarch64,arm64,$(CXX_TARGET_ARCH))) 431 $(eval CXX_TARGET_ARCH:=$(subst x86_64,x64,$(CXX_TARGET_ARCH))) 432 $(eval CXX_TARGET_ARCH:=$(subst s390x,s390,$(CXX_TARGET_ARCH))) 433 $(eval CXX_TARGET_ARCH:=$(subst powerpc,ppc,$(CXX_TARGET_ARCH))) 434 $(eval CXX_TARGET_ARCH:=$(subst ppc64,ppc,$(CXX_TARGET_ARCH))) 435 $(eval CXX_TARGET_ARCH:=$(subst ppcle,ppc,$(CXX_TARGET_ARCH))) 436 $(eval V8_TARGET_ARCH:=$(subst .,,$(suffix $(basename $@)))) 437 PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(shell pwd)/gypfiles:$(PYTHONPATH):$(shell pwd)/tools/gyp/pylib:$(PYTHONPATH)" \ 438 GYP_GENERATORS=make \ 439 tools/gyp/gyp --generator-output="$(OUTDIR)" gypfiles/all.gyp \ 440 -Igypfiles/standalone.gypi --depth=. \ 441 -Dv8_target_arch=$(V8_TARGET_ARCH) \ 442 $(if $(findstring $(CXX_TARGET_ARCH),$(V8_TARGET_ARCH)), \ 443 -Dtarget_arch=$(V8_TARGET_ARCH), \ 444 $(if $(shell echo $(ARCHES32) | grep $(V8_TARGET_ARCH)), \ 445 -Dtarget_arch=ia32,)) \ 446 $(if $(findstring optdebug,$@),-Dv8_optimized_debug=1,) \ 447 -S$(suffix $(basename $@))$(suffix $@) $(GYPFLAGS) 448 449$(OUTDIR)/Makefile.native: $(GYPFILES) $(ENVFILE) 450 PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(shell pwd)/gypfiles:$(PYTHONPATH):$(shell pwd)/tools/gyp/pylib:$(PYTHONPATH)" \ 451 GYP_GENERATORS=make \ 452 tools/gyp/gyp --generator-output="$(OUTDIR)" gypfiles/all.gyp \ 453 -Igypfiles/standalone.gypi --depth=. -S.native $(GYPFLAGS) 454 455# Replaces the old with the new environment file if they're different, which 456# will trigger GYP to regenerate Makefiles. 457$(ENVFILE): $(ENVFILE).new 458 @if test -r $(ENVFILE) && cmp $(ENVFILE).new $(ENVFILE) > /dev/null; \ 459 then rm $(ENVFILE).new; \ 460 else mv $(ENVFILE).new $(ENVFILE); fi 461 462# Stores current GYPFLAGS in a file. 463$(ENVFILE).new: 464 $(eval CXX_TARGET_ARCH:=$(shell $(CXX) -v 2>&1 | grep ^Target: | \ 465 cut -f 2 -d " " | cut -f 1 -d "-" )) 466 $(eval CXX_TARGET_ARCH:=$(subst aarch64,arm64,$(CXX_TARGET_ARCH))) 467 $(eval CXX_TARGET_ARCH:=$(subst x86_64,x64,$(CXX_TARGET_ARCH))) 468 @mkdir -p $(OUTDIR); echo "GYPFLAGS=$(GYPFLAGS) -Dtarget_arch=$(CXX_TARGET_ARCH)" > $(ENVFILE).new; 469 470# Heap constants for grokdump. 471DUMP_FILE = tools/v8heapconst.py 472grokdump: ia32.release 473 @cat $(DUMP_FILE).tmpl > $(DUMP_FILE) 474 @$(OUTDIR)/ia32.release/d8 --dump-heap-constants >> $(DUMP_FILE) 475 476# Support for the GNU GLOBAL Source Code Tag System. 477gtags.files: $(GYPFILES) $(ENVFILE) 478 @find include src test -name '*.h' -o -name '*.cc' -o -name '*.c' > $@ 479 480# We need to manually set the stack limit here, to work around bugs in 481# gmake-3.81 and global-5.7.1 on recent 64-bit Linux systems. 482# Using $(wildcard ...) gracefully ignores non-existing files, so that stale 483# gtags.files after switching branches don't cause recipe failures. 484GPATH GRTAGS GSYMS GTAGS: gtags.files $(wildcard $(shell cat gtags.files 2> /dev/null)) 485 @bash -c 'ulimit -s 10240 && GTAGSFORCECPP=yes gtags -i -q -f $<' 486 487gtags.clean: 488 rm -f gtags.files GPATH GRTAGS GSYMS GTAGS 489 490tags: gtags.files $(wildcard $(shell cat gtags.files 2> /dev/null)) 491 @(ctags --version | grep 'Exuberant Ctags' >/dev/null) || \ 492 (echo "Please install Exuberant Ctags (check 'ctags --version')" >&2; false) 493 ctags --fields=+l -L $< 494 495tags.clean: 496 rm -r tags 497 498dependencies builddeps: 499 $(error Use 'gclient sync' instead) 500