-
Notifications
You must be signed in to change notification settings - Fork 0
/
BUILD.gn
4797 lines (4354 loc) · 153 KB
/
BUILD.gn
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import("//build/config/android/config.gni")
import("//build/config/arm.gni")
import("//build/config/dcheck_always_on.gni")
import("//build/config/host_byteorder.gni")
import("//build/config/mips.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build_overrides/build.gni")
if (is_android) {
import("//build/config/android/rules.gni")
}
import("gni/snapshot_toolchain.gni")
import("gni/v8.gni")
# Specifies if the target build is a simulator build. Comparing target cpu
# with v8 target cpu to not affect simulator builds for making cross-compile
# snapshots.
target_is_simulator = (target_cpu != v8_target_cpu && !v8_multi_arch_build) ||
(current_cpu != v8_current_cpu && v8_multi_arch_build)
# For faster Windows builds. See https://crbug.com/v8/8475.
emit_builtins_as_inline_asm = is_win && is_clang
declare_args() {
# Print to stdout on Android.
v8_android_log_stdout = false
# Dynamically set an additional dependency from v8/custom_deps.
v8_custom_deps = ""
# Turns on all V8 debug features. Enables running V8 in a pseudo debug mode
# within a release Chrome.
v8_enable_debugging_features = is_debug
# Sets -DV8_ENABLE_FUTURE.
v8_enable_future = false
# Lite mode disables a number of performance optimizations to reduce memory
# at the cost of performance.
# Sets --DV8_LITE_MODE.
v8_enable_lite_mode = false
# Sets -DVERIFY_HEAP.
v8_enable_verify_heap = ""
# Sets -DVERIFY_PREDICTABLE
v8_enable_verify_predictable = false
# Enable compiler warnings when using V8_DEPRECATED apis.
v8_deprecation_warnings = true
# Enable compiler warnings when using V8_DEPRECATE_SOON apis.
v8_imminent_deprecation_warnings = true
# Embeds the given script into the snapshot.
v8_embed_script = ""
# Allows the embedder to add a custom suffix to the version string.
v8_embedder_string = ""
# Sets -dENABLE_DISASSEMBLER.
v8_enable_disassembler = ""
# Sets the number of internal fields on promise objects.
v8_promise_internal_field_count = 0
# Sets -dENABLE_GDB_JIT_INTERFACE.
v8_enable_gdbjit = ""
# Sets -dENABLE_VTUNE_JIT_INTERFACE.
v8_enable_vtunejit = false
# Sets -dENABLE_VTUNE_TRACEMARK.
v8_enable_vtunetracemark = false
# Sets -dENABLE_HANDLE_ZAPPING.
v8_enable_handle_zapping = true
# Enable slow dchecks.
v8_enable_slow_dchecks = false
# Enable fast mksnapshot runs.
v8_enable_fast_mksnapshot = false
# Optimize code for Torque executable, even during a debug build.
v8_enable_fast_torque = ""
# Enable the registration of unwinding info for Windows x64 and ARM64.
v8_win64_unwinding_info = true
# Enable code comments for builtins in the snapshot (impacts performance).
v8_enable_snapshot_code_comments = false
# Enable native counters from the snapshot (impacts performance, sets
# -dV8_SNAPSHOT_NATIVE_CODE_COUNTERS).
# This option will generate extra code in the snapshot to increment counters,
# as per the --native-code-counters flag.
v8_enable_snapshot_native_code_counters = ""
# Enable code-generation-time checking of types in the CodeStubAssembler.
v8_enable_verify_csa = false
# Enable pointer compression (sets -dV8_COMPRESS_POINTERS).
v8_enable_pointer_compression = ""
v8_enable_31bit_smis_on_64bit_arch = false
# Sets -dOBJECT_PRINT.
v8_enable_object_print = ""
# Sets -dV8_TRACE_MAPS.
v8_enable_trace_maps = ""
# Sets -dV8_ENABLE_CHECKS.
v8_enable_v8_checks = ""
# Sets -dV8_TRACE_IGNITION.
v8_enable_trace_ignition = false
# Sets -dV8_TRACE_FEEDBACK_UPDATES.
v8_enable_trace_feedback_updates = false
# Sets -dV8_CONCURRENT_MARKING
v8_enable_concurrent_marking = true
# Sets -dV8_ARRAY_BUFFER_EXTENSION
v8_enable_array_buffer_extension = true
# Enables various testing features.
v8_enable_test_features = ""
# With post mortem support enabled, metadata is embedded into libv8 that
# describes various parameters of the VM for use by debuggers. See
# tools/gen-postmortem-metadata.py for details.
v8_postmortem_support = false
# Use Siphash as added protection against hash flooding attacks.
v8_use_siphash = false
# Switches off inlining in V8.
v8_no_inline = false
# Override OS page size when generating snapshot
v8_os_page_size = "0"
# Similar to vfp but on MIPS.
v8_can_use_fpu_instructions = true
# Similar to the ARM hard float ABI but on MIPS.
v8_use_mips_abi_hardfloat = true
# Controls the threshold for on-heap/off-heap Typed Arrays.
v8_typed_array_max_size_in_heap = 64
v8_enable_gdbjit =
((v8_current_cpu == "x86" || v8_current_cpu == "x64") &&
(is_linux || is_mac)) || (v8_current_cpu == "ppc64" && is_linux)
# Temporary flag to allow embedders to update their microtasks scopes
# while rolling in a new version of V8.
v8_check_microtasks_scopes_consistency = ""
# Enable mitigations for executing untrusted code.
# Disabled by default on ia32 due to conflicting requirements with embedded
# builtins. Enabled by default on Android since it doesn't support
# site-isolation in Chrome and on simulator builds which test code generation
# on these platforms.
v8_untrusted_code_mitigations =
v8_current_cpu != "x86" && (is_android || target_is_simulator)
# Enable minor mark compact.
v8_enable_minor_mc = true
# Check that each header can be included in isolation (requires also
# setting the "check_v8_header_includes" gclient variable to run a
# specific hook).
v8_check_header_includes = false
# Enable sharing read-only space across isolates.
# Sets -DV8_SHARED_RO_HEAP.
v8_enable_shared_ro_heap = ""
# Enable lazy source positions by default.
v8_enable_lazy_source_positions = true
# Enable third party HEAP library
v8_enable_third_party_heap = false
# Libaries used by third party heap
v8_third_party_heap_libs = []
# Source code used by third party heap
v8_third_party_heap_files = []
# Disable write barriers when GCs are non-incremental and
# heap has single generation.
v8_disable_write_barriers = false
# Redirect allocation in young generation so that there will be
# only one single generation.
v8_enable_single_generation = ""
# Use token threaded dispatch for the regular expression interpreter.
# Use switch-based dispatch if this is false
v8_enable_regexp_interpreter_threaded_dispatch = true
# Enable additional targets necessary for verification of torque
# file generation
v8_verify_torque_generation_invariance = false
# Disable all snapshot compression.
v8_enable_snapshot_compression = true
# Enable control-flow integrity features, such as pointer authentication for
# ARM64.
v8_control_flow_integrity = false
}
# Derived defaults.
if (v8_enable_verify_heap == "") {
v8_enable_verify_heap = v8_enable_debugging_features
}
if (v8_enable_object_print == "") {
v8_enable_object_print = v8_enable_debugging_features
}
if (v8_enable_disassembler == "") {
v8_enable_disassembler = v8_enable_debugging_features
}
if (v8_enable_trace_maps == "") {
v8_enable_trace_maps = v8_enable_debugging_features
}
if (v8_enable_test_features == "") {
v8_enable_test_features = v8_enable_debugging_features || dcheck_always_on
}
if (v8_enable_v8_checks == "") {
v8_enable_v8_checks = v8_enable_debugging_features
}
if (v8_check_microtasks_scopes_consistency == "") {
v8_check_microtasks_scopes_consistency =
v8_enable_debugging_features || dcheck_always_on
}
if (v8_enable_snapshot_native_code_counters == "") {
v8_enable_snapshot_native_code_counters = v8_enable_debugging_features
}
if (v8_enable_pointer_compression == "") {
# TODO(v8:v7703): temporarily enable pointer compression on arm64 and on x64
v8_enable_pointer_compression =
v8_current_cpu == "arm64" || v8_current_cpu == "x64"
}
if (v8_enable_fast_torque == "") {
v8_enable_fast_torque = v8_enable_fast_mksnapshot
}
if (v8_enable_single_generation == "") {
v8_enable_single_generation = v8_disable_write_barriers
}
# Toggle pointer compression for correctness fuzzing when building the
# clang_x64_pointer_compression toolchain. We'll correctness-compare the
# default build with the clang_x64_pointer_compression build.
if (v8_multi_arch_build &&
rebase_path(get_label_info(":d8", "root_out_dir"), root_build_dir) ==
"clang_x64_pointer_compression") {
v8_enable_pointer_compression = !v8_enable_pointer_compression
}
if (v8_enable_shared_ro_heap == "") {
v8_enable_shared_ro_heap = !v8_enable_pointer_compression
}
assert(!v8_disable_write_barriers || v8_enable_single_generation,
"Disabling write barriers works only with single generation")
assert(v8_current_cpu != "x86" || !v8_untrusted_code_mitigations,
"Untrusted code mitigations are unsupported on ia32")
assert(v8_current_cpu == "arm64" || !v8_control_flow_integrity,
"Control-flow integrity is only supported on arm64")
assert(
!v8_enable_pointer_compression || !v8_enable_shared_ro_heap,
"Pointer compression is not supported with shared read-only heap enabled")
v8_random_seed = "314159265"
v8_toolset_for_shell = "host"
###############################################################################
# Configurations
#
config("internal_config_base") {
visibility = [ ":*" ] # Only targets in this file can depend on this.
include_dirs = [
".",
"$target_gen_dir",
]
}
config("internal_config") {
defines = []
visibility = [ ":*" ] # Only targets in this file can depend on this.
configs = [
"//build/config/compiler:wexit_time_destructors",
":internal_config_base",
":v8_header_features",
":v8_tracing_config",
]
if (is_component_build) {
defines += [ "BUILDING_V8_SHARED" ]
}
}
# Should be applied to all targets that write trace events.
config("v8_tracing_config") {
if (v8_use_perfetto) {
include_dirs = [
"third_party/perfetto/include",
"$root_gen_dir/third_party/perfetto",
"$root_gen_dir/third_party/perfetto/build_config",
]
}
}
# This config should be applied to code using the libplatform.
config("libplatform_config") {
include_dirs = [ "include" ]
if (is_component_build) {
defines = [ "USING_V8_PLATFORM_SHARED" ]
}
}
# This config should be applied to code using the libbase.
config("libbase_config") {
if (is_component_build) {
defines = [ "USING_V8_BASE_SHARED" ]
}
libs = []
if (is_android && current_toolchain != host_toolchain) {
libs += [ "log" ]
}
}
# This config should be applied to code using the libsampler.
config("libsampler_config") {
include_dirs = [ "include" ]
}
# This config should only be applied to code using V8 and not any V8 code
# itself.
config("external_config") {
defines = []
configs = [ ":v8_header_features" ]
if (is_component_build) {
defines += [ "USING_V8_SHARED" ]
}
include_dirs = [
"include",
"$target_gen_dir/include",
]
}
# This config should only be applied to code that needs to be explicitly
# aware of whether we are using startup data or not.
config("external_startup_data") {
if (v8_use_external_startup_data) {
defines = [ "V8_USE_EXTERNAL_STARTUP_DATA" ]
}
}
# Put defines that are used in public headers here; public headers are
# defined in "v8_headers" and are included by embedders of V8.
config("v8_header_features") {
visibility = [ ":*" ]
defines = []
if (v8_enable_v8_checks) {
defines += [ "V8_ENABLE_CHECKS" ] # Used in "include/v8.h".
}
if (v8_enable_pointer_compression) {
defines += [ "V8_COMPRESS_POINTERS" ]
}
if (v8_enable_pointer_compression || v8_enable_31bit_smis_on_64bit_arch) {
defines += [ "V8_31BIT_SMIS_ON_64BIT_ARCH" ]
}
if (v8_deprecation_warnings) {
defines += [ "V8_DEPRECATION_WARNINGS" ]
}
if (v8_imminent_deprecation_warnings) {
defines += [ "V8_IMMINENT_DEPRECATION_WARNINGS" ]
}
}
# Put defines here that are only used in our internal files and NEVER in
# external headers that embedders (such as chromium and node) might include.
config("features") {
visibility = [ ":*" ] # Only targets in this file can depend on this.
defines = []
configs = [ ":v8_header_features" ]
if (v8_embedder_string != "") {
defines += [ "V8_EMBEDDER_STRING=\"$v8_embedder_string\"" ]
}
if (v8_enable_disassembler) {
defines += [ "ENABLE_DISASSEMBLER" ]
}
if (v8_promise_internal_field_count != 0) {
defines +=
[ "V8_PROMISE_INTERNAL_FIELD_COUNT=${v8_promise_internal_field_count}" ]
}
defines +=
[ "V8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=${v8_typed_array_max_size_in_heap}" ]
assert(
!v8_enable_raw_heap_snapshots,
"This flag is deprecated and is now available through the inspector interface as an argument to profiler's method `takeHeapSnapshot`. Consider using blink's flag `enable_additional_blink_object_names` to get better naming of internal objects.")
if (v8_enable_future) {
defines += [ "V8_ENABLE_FUTURE" ]
}
if (v8_enable_lite_mode) {
defines += [ "V8_LITE_MODE" ]
# TODO(v8:7777): Remove the define once the --jitless runtime flag does
# everything we need.
defines += [ "V8_JITLESS_MODE" ]
}
if (v8_enable_gdbjit) {
defines += [ "ENABLE_GDB_JIT_INTERFACE" ]
}
if (v8_enable_vtunejit) {
defines += [ "ENABLE_VTUNE_JIT_INTERFACE" ]
}
if (v8_enable_vtunetracemark) {
defines += [ "ENABLE_VTUNE_TRACEMARK" ]
}
if (v8_enable_minor_mc) {
defines += [ "ENABLE_MINOR_MC" ]
}
if (v8_enable_object_print) {
defines += [ "OBJECT_PRINT" ]
}
if (v8_enable_verify_heap) {
defines += [ "VERIFY_HEAP" ]
}
if (v8_enable_verify_predictable) {
defines += [ "VERIFY_PREDICTABLE" ]
}
if (v8_enable_trace_maps) {
defines += [ "V8_TRACE_MAPS" ]
}
if (v8_enable_trace_ignition) {
defines += [ "V8_TRACE_IGNITION" ]
}
if (v8_enable_trace_feedback_updates) {
defines += [ "V8_TRACE_FEEDBACK_UPDATES" ]
}
if (v8_enable_test_features) {
defines += [ "V8_ENABLE_ALLOCATION_TIMEOUT" ]
defines += [ "V8_ENABLE_FORCE_SLOW_PATH" ]
defines += [ "V8_ENABLE_DOUBLE_CONST_STORE_CHECK" ]
}
if (v8_enable_i18n_support) {
defines += [ "V8_INTL_SUPPORT" ]
}
if (v8_enable_handle_zapping) {
defines += [ "ENABLE_HANDLE_ZAPPING" ]
}
if (v8_enable_snapshot_native_code_counters) {
defines += [ "V8_SNAPSHOT_NATIVE_CODE_COUNTERS" ]
}
if (v8_enable_single_generation) {
defines += [ "V8_ENABLE_SINGLE_GENERATION" ]
}
if (v8_disable_write_barriers) {
defines += [ "V8_DISABLE_WRITE_BARRIERS" ]
}
if (v8_enable_third_party_heap) {
defines += [ "V8_ENABLE_THIRD_PARTY_HEAP" ]
}
if (v8_use_external_startup_data) {
defines += [ "V8_USE_EXTERNAL_STARTUP_DATA" ]
}
if (v8_enable_concurrent_marking) {
defines += [ "V8_CONCURRENT_MARKING" ]
}
if (v8_enable_array_buffer_extension) {
defines += [ "V8_ARRAY_BUFFER_EXTENSION" ]
}
if (v8_enable_lazy_source_positions) {
defines += [ "V8_ENABLE_LAZY_SOURCE_POSITIONS" ]
}
if (v8_check_microtasks_scopes_consistency) {
defines += [ "V8_CHECK_MICROTASKS_SCOPES_CONSISTENCY" ]
}
# TODO(v8:8519): Remove the define once all use-sites in
# the code are removed/fixed
defines += [ "V8_EMBEDDED_BUILTINS" ]
if (v8_use_multi_snapshots) {
defines += [ "V8_MULTI_SNAPSHOTS" ]
}
if (v8_use_siphash) {
defines += [ "V8_USE_SIPHASH" ]
}
if (v8_enable_shared_ro_heap) {
defines += [ "V8_SHARED_RO_HEAP" ]
}
if (v8_use_perfetto) {
defines += [ "V8_USE_PERFETTO" ]
}
if (v8_win64_unwinding_info) {
defines += [ "V8_WIN64_UNWINDING_INFO" ]
}
if (v8_enable_regexp_interpreter_threaded_dispatch) {
defines += [ "V8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH" ]
}
if (v8_enable_snapshot_compression) {
defines += [ "V8_SNAPSHOT_COMPRESSION" ]
}
if (v8_control_flow_integrity) {
defines += [ "V8_ENABLE_CONTROL_FLOW_INTEGRITY" ]
}
if (v8_enable_wasm_gdb_remote_debugging) {
defines += [ "V8_ENABLE_WASM_GDB_REMOTE_DEBUGGING" ]
}
}
config("toolchain") {
visibility = [ ":*" ] # Only targets in this file can depend on this.
defines = []
cflags = []
ldflags = []
if (v8_current_cpu == "arm") {
defines += [ "V8_TARGET_ARCH_ARM" ]
if (arm_version >= 7) {
defines += [ "CAN_USE_ARMV7_INSTRUCTIONS" ]
}
if (arm_fpu == "vfpv3-d16") {
defines += [ "CAN_USE_VFP3_INSTRUCTIONS" ]
} else if (arm_fpu == "vfpv3") {
defines += [
"CAN_USE_VFP3_INSTRUCTIONS",
"CAN_USE_VFP32DREGS",
]
} else if (arm_fpu == "neon") {
defines += [
"CAN_USE_VFP3_INSTRUCTIONS",
"CAN_USE_VFP32DREGS",
"CAN_USE_NEON",
]
}
# TODO(jochen): Add support for arm_test_noprobe.
if (current_cpu != "arm") {
# These defines ares used for the ARM simulator.
if (arm_float_abi == "hard") {
defines += [ "USE_EABI_HARDFLOAT=1" ]
} else if (arm_float_abi == "softfp") {
defines += [ "USE_EABI_HARDFLOAT=0" ]
}
}
}
if (v8_current_cpu == "arm64") {
defines += [ "V8_TARGET_ARCH_ARM64" ]
if (v8_control_flow_integrity) {
# TODO(v8:10026): Enable this in src/build.
if (current_cpu == "arm64") {
cflags += [ "-mbranch-protection=pac-ret" ]
}
}
}
# Mips64el/mipsel simulators.
if (target_is_simulator &&
(v8_current_cpu == "mipsel" || v8_current_cpu == "mips64el")) {
defines += [ "_MIPS_TARGET_SIMULATOR" ]
}
if (v8_current_cpu == "mipsel" || v8_current_cpu == "mips") {
defines += [ "V8_TARGET_ARCH_MIPS" ]
if (v8_can_use_fpu_instructions) {
defines += [ "CAN_USE_FPU_INSTRUCTIONS" ]
}
if (v8_use_mips_abi_hardfloat) {
defines += [
"__mips_hard_float=1",
"CAN_USE_FPU_INSTRUCTIONS",
]
} else {
defines += [ "__mips_soft_float=1" ]
}
if (mips_arch_variant == "r6") {
defines += [
"_MIPS_ARCH_MIPS32R6",
"FPU_MODE_FP64",
]
if (mips_use_msa) {
defines += [ "_MIPS_MSA" ]
}
} else if (mips_arch_variant == "r2") {
defines += [ "_MIPS_ARCH_MIPS32R2" ]
if (mips_fpu_mode == "fp64") {
defines += [ "FPU_MODE_FP64" ]
} else if (mips_fpu_mode == "fpxx") {
defines += [ "FPU_MODE_FPXX" ]
} else if (mips_fpu_mode == "fp32") {
defines += [ "FPU_MODE_FP32" ]
}
} else if (mips_arch_variant == "r1") {
defines += [ "FPU_MODE_FP32" ]
}
# TODO(jochen): Add support for mips_arch_variant rx and loongson.
}
if (v8_current_cpu == "mips64el" || v8_current_cpu == "mips64") {
defines += [ "V8_TARGET_ARCH_MIPS64" ]
if (v8_can_use_fpu_instructions) {
defines += [ "CAN_USE_FPU_INSTRUCTIONS" ]
}
if (host_byteorder == "little") {
defines += [ "V8_TARGET_ARCH_MIPS64_LE" ]
} else if (host_byteorder == "big") {
defines += [ "V8_TARGET_ARCH_MIPS64_BE" ]
}
if (v8_use_mips_abi_hardfloat) {
defines += [
"__mips_hard_float=1",
"CAN_USE_FPU_INSTRUCTIONS",
]
} else {
defines += [ "__mips_soft_float=1" ]
}
if (mips_arch_variant == "r6") {
defines += [ "_MIPS_ARCH_MIPS64R6" ]
if (mips_use_msa) {
defines += [ "_MIPS_MSA" ]
}
} else if (mips_arch_variant == "r2") {
defines += [ "_MIPS_ARCH_MIPS64R2" ]
}
}
if (v8_current_cpu == "s390" || v8_current_cpu == "s390x") {
defines += [ "V8_TARGET_ARCH_S390" ]
cflags += [ "-ffp-contract=off" ]
if (v8_current_cpu == "s390x") {
defines += [ "V8_TARGET_ARCH_S390X" ]
}
if (host_byteorder == "little") {
defines += [ "V8_TARGET_ARCH_S390_LE_SIM" ]
} else {
cflags += [ "-march=z196" ]
}
}
if (v8_current_cpu == "ppc" || v8_current_cpu == "ppc64") {
if (v8_current_cpu == "ppc") {
defines += [ "V8_TARGET_ARCH_PPC" ]
} else if (v8_current_cpu == "ppc64") {
defines += [ "V8_TARGET_ARCH_PPC64" ]
}
if (host_byteorder == "little") {
defines += [ "V8_TARGET_ARCH_PPC_LE" ]
} else if (host_byteorder == "big") {
defines += [ "V8_TARGET_ARCH_PPC_BE" ]
if (current_os == "aix") {
cflags += [
# Work around AIX ceil, trunc and round oddities.
"-mcpu=power5+",
"-mfprnd",
# Work around AIX assembler popcntb bug.
"-mno-popcntb",
]
}
}
}
if (v8_current_cpu == "x86") {
defines += [ "V8_TARGET_ARCH_IA32" ]
if (is_win) {
# Ensure no surprising artifacts from 80bit double math with x86.
cflags += [ "/arch:SSE2" ]
}
}
if (v8_current_cpu == "x64") {
defines += [ "V8_TARGET_ARCH_X64" ]
if (is_win) {
# Increase the initial stack size. The default is 1MB, this is 2MB. This
# applies only to executables and shared libraries produced by V8 since
# ldflags are not pushed to dependants.
ldflags += [ "/STACK:2097152" ]
}
}
if (is_android && v8_android_log_stdout) {
defines += [ "V8_ANDROID_LOG_STDOUT" ]
}
# V8_TARGET_OS_ defines. The target OS may differ from host OS e.g. in
# mksnapshot. We additionally set V8_HAVE_TARGET_OS to determine that a
# target OS has in fact been set; otherwise we internally assume that target
# OS == host OS (see v8config.h).
if (target_os == "android") {
defines += [ "V8_HAVE_TARGET_OS" ]
defines += [ "V8_TARGET_OS_ANDROID" ]
} else if (target_os == "fuchsia") {
defines += [ "V8_HAVE_TARGET_OS" ]
defines += [ "V8_TARGET_OS_FUCHSIA" ]
} else if (target_os == "ios") {
defines += [ "V8_HAVE_TARGET_OS" ]
defines += [ "V8_TARGET_OS_IOS" ]
} else if (target_os == "linux") {
defines += [ "V8_HAVE_TARGET_OS" ]
defines += [ "V8_TARGET_OS_LINUX" ]
} else if (target_os == "mac") {
defines += [ "V8_HAVE_TARGET_OS" ]
defines += [ "V8_TARGET_OS_MACOSX" ]
} else if (target_os == "win") {
defines += [ "V8_HAVE_TARGET_OS" ]
defines += [ "V8_TARGET_OS_WIN" ]
}
# TODO(jochen): Support v8_enable_prof on Windows.
# TODO(jochen): Add support for compiling with simulators.
if (v8_enable_debugging_features) {
if (is_linux && v8_enable_backtrace) {
ldflags += [ "-rdynamic" ]
}
defines += [ "DEBUG" ]
if (v8_enable_slow_dchecks) {
defines += [ "ENABLE_SLOW_DCHECKS" ]
}
} else if (dcheck_always_on) {
defines += [ "DEBUG" ]
}
if (v8_enable_verify_csa) {
defines += [ "ENABLE_VERIFY_CSA" ]
}
if (!v8_untrusted_code_mitigations) {
defines += [ "DISABLE_UNTRUSTED_CODE_MITIGATIONS" ]
}
if (v8_no_inline) {
if (is_win) {
cflags += [ "/Ob0" ]
} else {
cflags += [
"-fno-inline-functions",
"-fno-inline",
]
}
}
if (is_clang) {
cflags += [ "-Wmissing-field-initializers" ]
if (v8_current_cpu != "mips" && v8_current_cpu != "mipsel") {
# We exclude MIPS because the IsMipsArchVariant macro causes trouble.
cflags += [ "-Wunreachable-code" ]
}
if (v8_current_cpu == "x64" || v8_current_cpu == "arm64" ||
v8_current_cpu == "mips64el") {
cflags += [ "-Wshorten-64-to-32" ]
}
}
if (is_win) {
cflags += [
"/wd4245", # Conversion with signed/unsigned mismatch.
"/wd4267", # Conversion with possible loss of data.
"/wd4324", # Padding structure due to alignment.
"/wd4701", # Potentially uninitialized local variable.
"/wd4702", # Unreachable code.
"/wd4703", # Potentially uninitialized local pointer variable.
"/wd4709", # Comma operator within array index expr (bugged).
"/wd4714", # Function marked forceinline not inlined.
# MSVC assumes that control can get past an exhaustive switch and then
# warns if there's no return there (see https://crbug.com/v8/7658)
"/wd4715", # Not all control paths return a value.
"/wd4718", # Recursive call has no side-effect.
"/wd4723", # https://crbug.com/v8/7771
"/wd4724", # https://crbug.com/v8/7771
"/wd4800", # Forcing value to bool.
]
}
if (!is_clang && is_win) {
cflags += [ "/wd4506" ] # Benign "no definition for inline function"
}
if (!is_clang && !is_win) {
cflags += [
# Disable gcc warnings for optimizations based on the assumption that
# signed overflow does not occur. Generates false positives (see
# http://crbug.com/v8/6341).
"-Wno-strict-overflow",
# GCC assumes that control can get past an exhaustive switch and then
# warns if there's no return there (see https://crbug.com/v8/7658).
"-Wno-return-type",
]
}
# Chromium uses a hand-picked subset of UBSan coverage. We want everything.
if (is_ubsan) {
cflags += [ "-fsanitize=undefined" ]
}
}
# For code that is hot during mksnapshot. In fast-mksnapshot builds, we
# optimize some files even in debug builds to speed up mksnapshot times.
config("always_optimize") {
configs = [ ":internal_config" ]
# TODO(crbug.com/621335) Rework this so that we don't have the confusion
# between "optimize_speed" and "optimize_max".
if (((is_posix && !is_android) || is_fuchsia) && !using_sanitizer) {
configs += [ "//build/config/compiler:optimize_speed" ]
} else {
configs += [ "//build/config/compiler:optimize_max" ]
}
}
# Configs for code coverage with gcov. Separate configs for cflags and ldflags
# to selectively influde cflags in non-test targets only.
config("v8_gcov_coverage_cflags") {
cflags = [
"-fprofile-arcs",
"-ftest-coverage",
]
}
config("v8_gcov_coverage_ldflags") {
ldflags = [ "-fprofile-arcs" ]
}
###############################################################################
# Actions
#
# Only for Windows clang builds. Converts the embedded.S file produced by
# mksnapshot into an embedded.cc file with corresponding inline assembly.
template("asm_to_inline_asm") {
name = target_name
if (name == "default") {
suffix = ""
} else {
suffix = "_$name"
}
action("asm_to_inline_asm_" + name) {
visibility = [ ":*" ] # Only targets in this file can depend on this.
assert(emit_builtins_as_inline_asm)
script = "tools/snapshot/asm_to_inline_asm.py"
deps = [ ":run_mksnapshot_" + name ]
sources = [ "$target_gen_dir/embedded${suffix}.S" ]
outputs = [ "$target_gen_dir/embedded${suffix}.cc" ]
args = invoker.args
args += [
rebase_path("$target_gen_dir/embedded${suffix}.S", root_build_dir),
rebase_path("$target_gen_dir/embedded${suffix}.cc", root_build_dir),
]
}
}
if (is_android && enable_java_templates) {
android_assets("v8_external_startup_data_assets") {
if (v8_use_external_startup_data) {
# We don't support side-by-side snapshots on Android within Chromium.
assert(!v8_use_multi_snapshots)
deps = [ "//v8" ]
renaming_sources = [ "$root_out_dir/snapshot_blob.bin" ]
if (current_cpu == "arm" || current_cpu == "x86" ||
current_cpu == "mipsel") {
renaming_destinations = [ "snapshot_blob_32.bin" ]
} else {
renaming_destinations = [ "snapshot_blob_64.bin" ]
}
disable_compression = true
}
}
}
action("postmortem-metadata") {
# Only targets in this file and the top-level visibility target can
# depend on this.
visibility = [
":*",
"//:gn_visibility",
]
script = "tools/gen-postmortem-metadata.py"
# NOSORT
sources = [
"src/objects/objects.h",
"src/objects/objects-inl.h",
"src/objects/allocation-site-inl.h",
"src/objects/allocation-site.h",
"src/objects/cell-inl.h",
"src/objects/cell.h",
"src/objects/code-inl.h",
"src/objects/code.h",
"src/objects/data-handler.h",
"src/objects/data-handler-inl.h",
"src/objects/descriptor-array.h",
"src/objects/descriptor-array-inl.h",
"src/objects/feedback-cell.h",
"src/objects/feedback-cell-inl.h",
"src/objects/fixed-array-inl.h",
"src/objects/fixed-array.h",
"src/objects/heap-number-inl.h",
"src/objects/heap-number.h",
"src/objects/heap-object-inl.h",
"src/objects/heap-object.h",
"src/objects/instance-type.h",
"src/objects/js-array-inl.h",
"src/objects/js-array.h",
"src/objects/js-array-buffer-inl.h",
"src/objects/js-array-buffer.h",
"src/objects/js-objects-inl.h",
"src/objects/js-objects.h",
"src/objects/js-promise-inl.h",
"src/objects/js-promise.h",
"src/objects/js-regexp-inl.h",
"src/objects/js-regexp.cc",
"src/objects/js-regexp.h",
"src/objects/js-regexp-string-iterator-inl.h",
"src/objects/js-regexp-string-iterator.h",
"src/objects/map.h",
"src/objects/map.cc",
"src/objects/map-inl.h",
"src/objects/js-objects.cc",
"src/objects/name.h",
"src/objects/name-inl.h",
"src/objects/oddball-inl.h",
"src/objects/oddball.h",
"src/objects/primitive-heap-object.h",
"src/objects/primitive-heap-object-inl.h",
"src/objects/scope-info.h",
"src/objects/script.h",
"src/objects/script-inl.h",
"src/objects/shared-function-info.h",
"src/objects/shared-function-info-inl.h",
"src/objects/string.cc",
"src/objects/string.h",
"src/objects/string-comparator.cc",
"src/objects/string-comparator.h",
"src/objects/string-inl.h",
"src/objects/struct.h",
"src/objects/struct-inl.h",
"$target_gen_dir/torque-generated/instance-types-tq.h",
]
outputs = [ "$target_gen_dir/debug-support.cc" ]
args = rebase_path(outputs, root_build_dir) +
rebase_path(sources, root_build_dir)
deps = [ ":run_torque" ]
}
torque_files = [
"src/builtins/array-copywithin.tq",
"src/builtins/array-every.tq",
"src/builtins/array-filter.tq",
"src/builtins/array-find.tq",
"src/builtins/array-findindex.tq",
"src/builtins/array-foreach.tq",
"src/builtins/array-from.tq",
"src/builtins/array-isarray.tq",
"src/builtins/array-join.tq",
"src/builtins/array-lastindexof.tq",
"src/builtins/array-map.tq",
"src/builtins/array-of.tq",
"src/builtins/array-reduce-right.tq",
"src/builtins/array-reduce.tq",
"src/builtins/array-reverse.tq",
"src/builtins/array-shift.tq",