aK9G4gYa

1action_pool_depth
2    Current value (from the default) = -1
3      From //build/toolchain/BUILD.gn:10
4
5    Pool for non goma tasks.
6
7additional_absl_clients
8    Current value (from the default) = []
9      From //third_party/abseil-cpp/abseil_clients.gni:19
10
11    Additional targets that can depend on absl.
12    ** DISCLAIMER **
13   
14    Using "additional_absl_clients" is highly discouraged because it will break
15    the component build since Abseil doesn't have export annotations and WebRTC
16    is already depending on it. Any CL that use "additional_absl_clients" will
17    have a really high probability of being reverted.
18
19aec_untrusted_delay_for_testing
20    Current value (from the default) = false
21      From //third_party/webrtc/modules/audio_processing/BUILD.gn:18
22
23    Disables the usual mode where we trust the reported system delay
24    values the AEC receives. The corresponding define is set appropriately
25    in the code, but it can be force-enabled here for testing.
26
27allow_critical_memory_pressure_handling_in_foreground
28    Current value (from the default) = false
29      From //content/common/features.gni:13
30
31    Whether to perform critical memory pressure handling when in foreground (if
32    false, critical memory pressure is treated like moderate pressure in foreground).
33
34alternate_cdm_storage_id_key
35    Current value (from the default) = ""
36      From //media/media_options.gni:188
37
38    If |enable_cdm_storage_id| is set, then an implementation specific key
39    must also be provided. It can be provided by defining CDM_STORAGE_ID_KEY
40    (which takes precedence), or by setting |alternate_cdm_storage_id_key|.
41    The key must be a string of at least 32 characters.
42
43android32_ndk_api_level
44    Current value (from the default) = 16
45      From //build/config/android/config.gni:49
46
47    Android API level for 32 bits platforms
48
49android64_ndk_api_level
50    Current value (from the default) = 21
51      From //build/config/android/config.gni:52
52
53    Android API level for 64 bits platforms
54
55android_channel
56    Current value (from the default) = "default"
57      From //chrome/android/channel.gni:8
58
59    The channel to build on Android: stable, beta, dev, canary, work, or
60    default. "default" should be used on non-official builds.
61
62android_default_version_code
63    Current value (from the default) = "1"
64      From //build/config/android/config.gni:151
65
66    Android versionCode for android_apk()s that don't explicitly set one.
67
68android_default_version_name
69    Current value (from the default) = "Developer Build"
70      From //build/config/android/config.gni:154
71
72    Android versionName for android_apk()s that don't explicitly set one.
73
74android_full_debug
75    Current value (from the default) = false
76      From //build/config/compiler/BUILD.gn:53
77
78    Normally, Android builds are lightly optimized, even for debug builds, to
79    keep binary size down. Setting this flag to true disables such optimization
80
81android_keystore_name
82    Current value (from the default) = "chromiumdebugkey"
83      From //build/config/android/config.gni:166
84
85    The name of the keystore to use for signing builds.
86
87android_keystore_password
88    Current value (from the default) = "chromium"
89      From //build/config/android/config.gni:169
90
91    The password for the keystore to use for signing builds.
92
93android_keystore_path
94    Current value (from the default) = "//build/android/chromium-debug.keystore"
95      From //build/config/android/config.gni:163
96
97    The path to the keystore to use for signing builds.
98
99android_libcpp_lib_dir
100    Current value (from the default) = ""
101      From //build/config/android/config.gni:148
102
103    Libc++ library directory. Override to use a custom libc++ binary.
104
105android_ndk_major_version
106    Current value (from the default) = 20
107      From //build/config/android/config.gni:137
108
109android_ndk_root
110    Current value (from the default) = "//third_party/android_ndk"
111      From //build/config/android/config.gni:135
112
113android_ndk_version
114    Current value (from the default) = "r20"
115      From //build/config/android/config.gni:136
116
117android_override_version_code
118    Current value (from the default) = ""
119      From //build/config/android/config.gni:157
120
121    Forced Android versionCode
122
123android_override_version_name
124    Current value (from the default) = ""
125      From //build/config/android/config.gni:160
126
127    Forced Android versionName
128
129android_sdk_build_tools_version
130    Current value (from the default) = "29.0.2"
131      From //build/config/android/config.gni:141
132
133android_sdk_platform_version
134    Current value (from the default) = 28
135      From //build/config/android/config.gni:230
136
137android_sdk_release
138    Current value (from the default) = "p"
139      From //build/config/android/config.gni:62
140
141    Android SDK release. Currently, only "o_mr1" and "p" are publicly
142    supported.
143
144android_sdk_root
145    Current value (from the default) = "//third_party/android_sdk/public"
146      From //build/config/android/config.gni:139
147
148android_sdk_tools_bundle_aapt2_dir
149    Current value (from the default) = "//third_party/android_build_tools/aapt2"
150      From //build/config/android/config.gni:204
151
152android_sdk_tools_version_suffix
153    Current value (from the default) = "-26.0.0-dev"
154      From //build/config/android/config.gni:142
155
156android_sdk_version
157    Current value (from the default) = 28
158      From //build/config/android/config.gni:140
159
160android_unstripped_runtime_outputs
161    Current value (from the default) = true
162      From //build/toolchain/android/BUILD.gn:13
163
164    Whether unstripped binaries, i.e. compiled with debug symbols, should be
165    considered runtime_deps rather than stripped ones.
166
167angle_64bit_current_cpu
168    Current value (from the default) = true
169      From //third_party/angle/gni/angle.gni:48
170
171angle_build_all
172    Current value (from the default) = true
173      From //third_party/angle/BUILD.gn:34
174
175    Don't build extra (test, samples etc) for Windows UWP. We don't have
176    infrastructure (e.g. windowing helper functions) in place to run them.
177
178angle_enable_d3d11
179    Current value (from the default) = false
180      From //third_party/angle/gni/angle.gni:81
181
182angle_enable_d3d9
183    Current value (from the default) = false
184      From //third_party/angle/gni/angle.gni:80
185
186angle_enable_essl
187    Current value (from the default) = true
188      From //third_party/angle/gni/angle.gni:94
189
190angle_enable_gl
191    Current value (from the default) = true
192      From //third_party/angle/gni/angle.gni:83
193
194angle_enable_gl_null
195    Current value (from the default) = true
196      From //third_party/angle/gni/angle.gni:99
197
198angle_enable_glsl
199    Current value (from the default) = true
200      From //third_party/angle/gni/angle.gni:95
201
202angle_enable_hlsl
203    Current value (from the default) = false
204      From //third_party/angle/gni/angle.gni:100
205
206angle_enable_null
207    Current value (from the default) = true
208      From //third_party/angle/gni/angle.gni:93
209
210angle_enable_overlay
211    Current value (from the default) = false
212      From //third_party/angle/gni/angle.gni:109
213
214    Disable overlay by default
215
216angle_enable_trace
217    Current value (from the default) = false
218      From //third_party/angle/gni/angle.gni:101
219
220angle_enable_vulkan
221    Current value (from the default) = false
222      From //third_party/angle/gni/angle.gni:90
223
224angle_enable_vulkan_validation_layers
225    Current value (from the default) = false
226      From //third_party/angle/gni/angle.gni:105
227
228angle_is_winuwp
229    Current value (from the default) = false
230      From //third_party/angle/gni/angle.gni:69
231
232    There's no "is_winuwp" helper in BUILDCONFIG.gn, so we define one ourselves
233
234angle_libs_suffix
235    Current value (from the default) = "_angle"
236      From //third_party/angle/gni/angle.gni:73
237
238angle_link_glx
239    Current value (from the default) = false
240      From //third_party/angle/BUILD.gn:26
241
242    Link in system libGL, to work with apitrace.  See doc/DebuggingTips.md.
243
244angle_shared_libvulkan
245    Current value (from the default) = false
246      From //third_party/angle/gni/angle.gni:66
247
248angle_with_capture_by_default
249    Current value (from the default) = false
250      From //third_party/angle/BUILD.gn:30
251
252    Defaults to capture building to $root_out_dir/angle_libs/with_capture.
253    Switch on to build capture to $root_out_dir.
254
255apm_debug_dump
256    Current value (from the default) = false
257      From //third_party/webrtc/webrtc.gni:97
258
259    Selects whether debug dumps for the audio processing module
260    should be generated.
261
262archive_seed_corpus
263    Current value (from the default) = true
264      From //build/config/sanitizers/sanitizers.gni:117
265
266    When true, seed corpora archives are built.
267
268asan_globals
269    Current value (from the default) = true
270      From //build/config/sanitizers/sanitizers.gni:166
271
272    Detect overflow/underflow for global objects.
273   
274    Mac: http://crbug.com/352073
275
276asan_use_blacklist
277    Current value (from the default) = true
278      From //build/config/sanitizers/sanitizers.gni:109
279
280    Use blacklists from tools/memory/asan when compiling with asan.
281
282async_ar
283    Current value (from the default) = false
284      From //device/vr/buildflags/buildflags.gni:52
285
286    Whether to create AR module as an asynchronous DFM.
287
288async_tab_ui
289    Current value (from the default) = false
290      From //chrome/android/features/tab_ui/buildflags.gni:10
291
292    Whether to create tab_ui module as an asynchronous DFM.
293
294async_vr
295    Current value (from the default) = false
296      From //device/vr/buildflags/buildflags.gni:55
297
298    Whether to create VR module as an asynchronous DFM.
299
300audio_processing_in_audio_service_supported
301    Current value (from the default) = false
302      From //media/webrtc/audio_processing.gni:3
303
304    Note: the audio service must be sandboxed for us to use the APM there.
305
306auto_profile_path
307    Current value (from the default) = ""
308      From //build/config/compiler/BUILD.gn:89
309
310    AFDO (Automatic Feedback Directed Optimizer) is a form of profile-guided
311    optimization that GCC supports. It used by ChromeOS in their official
312    builds. To use it, set auto_profile_path to the path to a file containing
313    the needed gcov profiling data.
314
315binutils_path
316    Current value (from the default) = "../../third_party/binutils/Linux_x64/Release/bin"
317      From //build/config/compiler/BUILD.gn:62
318
319blink_animation_use_time_delta
320    Current value (from the default) = false
321      From //third_party/blink/renderer/core/animation/BUILD.gn:11
322
323    Use base::TimeDelta to represent time in renderer/core/animations. See
324    http://crbug.com/737867
325
326blink_gc_plugin
327    Current value (from the default) = true
328      From //third_party/blink/renderer/BUILD.gn:17
329
330    Set to true to enable the clang plugin that checks the usage of the  Blink
331    garbage-collection infrastructure during compilation.
332
333blink_gc_plugin_option_do_dump_graph
334    Current value (from the default) = false
335      From //third_party/blink/renderer/BUILD.gn:21
336
337    Set to true to have the clang Blink GC plugin emit class graph (in JSON)
338    with typed pointer edges; for debugging or other (internal) uses.
339
340blink_gc_plugin_option_warn_unneeded_finalizer
341    Current value (from the default) = false
342      From //third_party/blink/renderer/BUILD.gn:26
343
344    Set to true to have the clang Blink GC plugin additionally check if
345    a class has an empty destructor which would be unnecessarily invoked
346    when finalized.
347
348blink_symbol_level
349    Current value (from the default) = -1
350      From //third_party/blink/renderer/config.gni:33
351
352    How many symbols to include in the build of blink. This affects
353    the performance of the build since the symbols are large and dealing with
354    them is slow.
355      2 means regular build with symbols.
356      1 means minimal symbols, usually enough for backtraces only. Symbols with
357    internal linkage (static functions or those in anonymous namespaces) may not
358    appear when using this level.
359      0 means no symbols.
360      -1 means auto-set according to debug/release and platform.
361
362build_angle_deqp_tests
363    Current value (from the default) = false
364      From //third_party/angle/src/tests/BUILD.gn:12
365
366    Don't build dEQP by default.
367
368build_angle_gles1_conform_tests
369    Current value (from the default) = false
370      From //third_party/angle/src/tests/BUILD.gn:13
371
372build_apk_secondary_abi
373    Current value (from the default) = true
374      From //build/config/android/abi.gni:32
375
376    Builds secondary abi for APKs, supports build 32-bit arch as secondary
377    abi in 64-bit Monochrome and WebView.
378
379build_contextual_search
380    Current value (from the default) = true
381      From //components/contextual_search/features.gni:6
382
383build_display_configuration
384    Current value (from the default) = false
385      From //ui/display/display.gni:7
386
387    Build Chrome OS display configuration code.
388
389build_libsrtp_tests
390    Current value (from the default) = false
391      From //third_party/libsrtp/BUILD.gn:10
392
393    Tests may not be appropriate for some build environments, e.g. Windows.
394    Rather than enumerate valid options, we just let clients ask for them.
395
396build_sfntly_samples
397    Current value (from the default) = false
398      From //third_party/sfntly/BUILD.gn:9
399
400    Flip to true to build sfntly sample programs.
401
402build_with_mozilla
403    Current value (from the default) = false
404      From //third_party/webrtc/webrtc.gni:121
405
406    Enable to use the Mozilla internal settings.
407
408builtin_cert_verifier_feature_supported
409    Current value (from the default) = false
410      From //net/features.gni:48
411
412cast_is_debug
413    Current value (from the default) = true
414      From //build/config/chromecast_build.gni:16
415
416    If true, IS_CAST_DEBUG_BUILD() will evaluate to 1 in version.h. Otherwise,
417    it will evaluate to 0. Overriding this when is_debug=false is useful for
418    doing engineering builds.
419
420cc_wrapper
421    Current value (from the default) = ""
422      From //build/toolchain/cc_wrapper.gni:36
423
424    Set to "ccache", "icecc" or "distcc".  Probably doesn't work on windows.
425
426check_android_configuration
427    Current value (from the default) = false
428      From //build/config/android/config.gni:207
429
430    Checks that proguard flags have not changed (!is_java_debug only).
431
432chrome_orderfile_path
433    Current value (from the default) = ""
434      From //build/config/compiler/BUILD.gn:195
435
436chrome_pgo_phase
437    Current value (from the default) = 0
438      From //build/config/compiler/pgo/pgo.gni:13
439
440    Specify the current PGO phase.
441    Here's the different values that can be used:
442        0 : Means that PGO is turned off.
443        1 : Used during the PGI (instrumentation) phase.
444        2 : Used during the PGO (optimization) phase.
445   
446    TODO(sebmarchand): Add support for the PGU (update) phase.
447
448chromecast_branding
449    Current value (from the default) = "public"
450      From //build/config/chromecast_build.gni:20
451
452    chromecast_branding is used to include or exclude Google-branded components.
453    Set it to "public" for a Chromium build.
454
455chromeos_afdo_platform
456    Current value (from the default) = "silvermont"
457      From //build/config/compiler/BUILD.gn:111
458
459    This configuration is used to select a default profile in Chrome OS based on
460    the microarchitectures we are using. This is only used if
461    clang_use_default_sample_profile is true and clang_sample_profile_path is
462    empty.
463
464clang_base_path
465    Current value (from the default) = "//third_party/llvm-build/Release+Asserts"
466      From //build/config/clang/clang.gni:14
467
468clang_emit_debug_info_for_profiling
469    Current value (from the default) = false
470      From //build/config/compiler/BUILD.gn:114
471
472    Emit debug information for profiling wile building with clang.
473
474clang_sample_profile_path
475    Current value (from the default) = ""
476      From //build/config/compiler/BUILD.gn:96
477
478    Path to an AFDO profile to use while building with clang, if any. Empty
479    implies none.
480
481clang_use_chrome_plugins
482    Current value (from the default) = true
483      From //build/config/clang/clang.gni:12
484
485    Indicates if the build should use the Chrome-specific plugins for enforcing
486    coding guidelines, etc. Only used when compiling with Clang.
487
488clang_use_default_sample_profile
489    Current value (from the default) = false
490      From //build/config/compiler/BUILD.gn:104
491
492    Some configurations have default sample profiles. If this is true and
493    clang_sample_profile_path is empty, we'll fall back to the default.
494   
495    We currently only have default profiles for Chromium in-tree, so we disable
496    this by default for all downstream projects, since these profiles are likely
497    nonsensical for said projects.
498
499clang_version
500    Current value (from the default) = "10.0.0"
501      From //build/toolchain/toolchain.gni:40
502
503    Clang compiler version. Clang files are placed at version-dependent paths.
504
505closure_compile
506    Current value (from the default) = true
507      From //ui/webui/webui_features.gni:14
508
509    Enable closure type-checking for Chrome's web technology-based UI. This
510    enables the webui_closure_compile target which does a no-op without this
511    flag enabled. Requires Java.
512
513com_init_check_hook_disabled
514    Current value (from the default) = false
515      From //base/BUILD.gn:56
516
517    Set to true to disable COM init check hooks.
518
519compile_credentials
520    Current value (from the default) = false
521      From //sandbox/linux/BUILD.gn:17
522
523compile_suid_client
524    Current value (from the default) = false
525      From //sandbox/linux/BUILD.gn:15
526
527compiler_timing
528    Current value (from the default) = false
529      From //build/config/compiler/BUILD.gn:117
530
531    Turn this on to have the compiler output extra timing information.
532
533compute_build_timestamp
534    Current value (from the default) = "compute_build_timestamp.py"
535      From //build/timestamp.gni:17
536
537    This should be the filename of a script that prints a single line
538    containing an integer that's a unix timestamp in UTC.
539    This timestamp is used as build time and will be compiled into
540    other code.
541   
542    This argument may look unused. Before removing please check with the
543    chromecast team to see if they still use it internally.
544
545compute_inputs_for_analyze
546    Current value (from the default) = false
547      From //build/config/compute_inputs_for_analyze.gni:13
548
549    Enable this flag when running "gn analyze".
550   
551    This causes some gn actions to compute inputs immediately (via exec_script)
552    where they would normally compute them only when executed (and write them to
553    a depfile).
554   
555    This flag will slow down GN, but is required for analyze to work properly.
556
557concurrent_links
558    Current value (from the default) = -1
559      From //build/toolchain/concurrent_links.gni:19
560
561    Limit the number of concurrent links; we often want to run fewer
562    links at once than we do compiles, because linking is memory-intensive.
563    The default to use varies by platform and by the amount of memory
564    available, so we call out to a script to get the right value.
565
566content_shell_major_version
567    Current value (from the default) = "99"
568      From //content/shell/BUILD.gn:31
569
570content_shell_product_name
571    Current value (from the default) = "Content Shell"
572      From //content/shell/BUILD.gn:29
573
574content_shell_version
575    Current value (from the default) = "99.77.34.5"
576      From //content/shell/BUILD.gn:30
577
578coverage_instrumentation_input_file
579    Current value (from the default) = ""
580      From //build/config/coverage/coverage.gni:29
581
582    The path to the coverage instrumentation input file should be a source root
583    absolute path (e.g. //out/Release/coverage_instrumentation_input.txt), and
584    the file consists of multiple lines where each line represents a path to a
585    source file, and the paths must be relative to the root build directory.
586    e.g. ../../base/task/post_task.cc for build directory 'out/Release'.
587   
588    NOTE that this arg will be non-op if use_clang_coverage is false.
589
590crashpad_dependencies
591    Current value = "chromium"
592      From //.gn:51
593    Overridden from the default = "standalone"
594      From //third_party/crashpad/crashpad/build/crashpad_buildconfig.gni:19
595
596    Determines various flavors of build configuration, and which concrete
597    targets to use for dependencies. Valid values are "standalone", "chromium",
598    "fuchsia", "dart" or "external".
599
600crashpad_use_boringssl_for_http_transport_socket
601    Current value (from the default) = false
602      From //third_party/crashpad/crashpad/util/net/tls.gni:21
603
604    TODO(scottmg): https://crbug.com/crashpad/266 fuchsia:DX-690: BoringSSL
605    was removed from the Fuchsia SDK. Re-enable it when we have a way to acquire
606    a BoringSSL lib again.
607
608current_cpu
609    Current value (from the default) = ""
610      (Internally set; try `gn help current_cpu`.)
611
612current_os
613    Current value (from the default) = ""
614      (Internally set; try `gn help current_os`.)
615
616custom_toolchain
617    Current value (from the default) = ""
618      From //build/config/BUILDCONFIG.gn:144
619
620    Allows the path to a custom target toolchain to be injected as a single
621    argument, and set as the default toolchain.
622
623dawn_always_assert
624    Current value (from the default) = false
625      From //third_party/dawn/scripts/dawn_features.gni:17
626
627    Enable Dawn's ASSERTs even in release builds
628
629dawn_complete_static_libs
630    Current value (from the default) = false
631      From //third_party/dawn/scripts/dawn_features.gni:22
632
633    Should the Dawn static libraries be fully linked vs. GN's default of
634    treating them as source sets. This is useful for people using Dawn
635    standalone to produce static libraries to use in their projects.
636
637dawn_enable_d3d12
638    Current value (from the default) = false
639      From //third_party/dawn/scripts/dawn_features.gni:25
640
641    Enables the compilation of Dawn's D3D12 backend
642
643dawn_enable_metal
644    Current value (from the default) = false
645      From //third_party/dawn/scripts/dawn_features.gni:28
646
647    Enables the compilation of Dawn's Metal backend
648
649dawn_enable_null
650    Current value (from the default) = true
651      From //third_party/dawn/scripts/dawn_features.gni:32
652
653    Enables the compilation of Dawn's Null backend
654    (required for unittests, obviously non-conformant)
655
656dawn_enable_opengl
657    Current value (from the default) = false
658      From //third_party/dawn/scripts/dawn_features.gni:36
659
660    Enables the compilation of Dawn's OpenGL backend
661    (best effort, non-conformant)
662
663dawn_enable_vulkan
664    Current value (from the default) = false
665      From //third_party/dawn/scripts/dawn_features.gni:39
666
667    Enables the compilation of Dawn's Vulkan backend
668
669dcheck_always_on
670    Current value (from the default) = false
671      From //build/config/dcheck_always_on.gni:14
672
673    Set to true to enable dcheck in Release builds.
674
675dcheck_is_configurable
676    Current value (from the default) = false
677      From //build/config/dcheck_always_on.gni:9
678
679    Enables DCHECKs to be built-in, but to default to being non-fatal/log-only.
680    DCHECKS can then be set as fatal/non-fatal via the DCheckIsFatal feature.
681    See crbug.com/596231 for details on how this is used.
682
683debug_devtools
684    Current value (from the default) = false
685      From //third_party/blink/public/public_features.gni:12
686
687    If debug_devtools is set to true, JavaScript files for DevTools are stored
688    as is and loaded from disk. Otherwise, a concatenated file is stored in
689    resources.pak. It is still possible to load JS files from disk by passing
690    --debug-devtools cmdline switch.
691
692debuggable_apks
693    Current value (from the default) = true
694      From //build/config/android/config.gni:180
695
696    Mark APKs as android:debuggable="true".
697
698devtools_instrumentation_dumping
699    Current value (from the default) = false
700      From //build/config/android/abi.gni:24
701
702    Only effective if use_order_profiling = true. When this is true,
703    instrumentation switches from startup profiling after a delay, and
704    then waits for a devtools memory dump request to dump all
705    profiling information. When false, the same delay is used to switch from
706    startup, and then after a second delay all profiling information is dumped.
707    See base::android::orderfile::StartDelayedDump for more information.
708
709dfmify_dev_ui
710    Current value (from the default) = true
711      From //chrome/android/features/dev_ui/dev_ui_module.gni:8
712
713    Whether Developer UI (chrome:// pages) should be split into a separate
714    Dynamic Feature Module (DFM: //docs/android_dynamic_feature_modules.md).
715
716disable_android_lint
717    Current value (from the default) = false
718      From //build/config/android/config.gni:199
719
720    Turns off android lint. Useful for prototyping or for faster local builds.
721
722disable_autofill_assistant_dfm
723    Current value (from the default) = false
724      From //chrome/android/features/autofill_assistant/autofill_assistant_module.gni:11
725
726    This is a developer flag to be able to use the incremental build/install workflow for autofill
727    assistant. When set to true, autofill_assistant is built as part of the base apk and not a
728    separate feature module which currently doesn't support incremental builds.
729   
730    TODO(http://crbug/864142): Remove once incremental bundle install is available.
731
732disable_brotli_filter
733    Current value (from the default) = false
734      From //net/features.gni:23
735
736    Do not disable brotli filter by default.
737
738disable_file_support
739    Current value (from the default) = false
740      From //net/features.gni:9
741
742    Disables support for file URLs.  File URL support requires use of icu.
743
744disable_ftp_support
745    Current value (from the default) = false
746      From //net/features.gni:14
747
748disable_incremental_isolated_processes
749    Current value (from the default) = false
750      From //build/config/android/config.gni:187
751
752    Disables process isolation when building _incremental targets.
753    Required for Android M+ due to SELinux policies (stronger sandboxing).
754
755disable_libfuzzer
756    Current value (from the default) = false
757      From //build/config/sanitizers/sanitizers.gni:92
758
759    Helper variable for testing builds with disabled libfuzzer.
760    Not for client use.
761
762disable_tab_ui_dfm
763    Current value (from the default) = true
764      From //chrome/android/features/tab_ui/buildflags.gni:7
765
766    Controls the feature being a DFM or not.
767
768enable_android_night_mode
769    Current value (from the default) = true
770      From //ui/android/features.gni:6
771
772enable_app_list
773    Current value (from the default) = false
774      From //chrome/common/features.gni:24
775
776enable_arcore
777    Current value (from the default) = false
778      From //device/vr/buildflags/buildflags.gni:48
779
780    Controls inclusion of code for ARCore that must be identical across configs.
781    Once crbug.com/920424 is resolved, this will exactly control whether ARCore
782    is supported.
783    TODO(crbug.com/843374): AR should not depend on |enable_vr|.
784
785enable_av1_decoder
786    Current value (from the default) = false
787      From //media/media_options.gni:99
788
789enable_background_contents
790    Current value (from the default) = false
791      From //chrome/common/features.gni:27
792
793    Enables support for background apps.
794
795enable_background_mode
796    Current value (from the default) = false
797      From //chrome/common/features.gni:28
798
799enable_basic_print_dialog
800    Current value (from the default) = true
801      From //chrome/common/features.gni:32
802
803    Enable the printing system dialog for platforms that support printing
804    and have a system dialog.
805
806enable_basic_printing
807    Current value (from the default) = true
808      From //printing/buildflags/buildflags.gni:11
809
810    Enable basic printing support and UI.
811
812enable_blink_heap_verification
813    Current value (from the default) = false
814      From //third_party/blink/renderer/platform/heap/BUILD.gn:12
815
816    Enables heap verification.
817
818enable_callgrind
819    Current value (from the default) = false
820      From //third_party/pdfium/pdfium.gni:57
821
822    Enable callgrind for performance profiling
823
824enable_captive_portal_detection
825    Current value (from the default) = false
826      From //chrome/common/features.gni:34
827
828enable_cast_renderer
829    Current value (from the default) = false
830      From //build/config/chromecast_build.gni:46
831
832    True to enable the cast renderer.  It is enabled by default for non-android
833    builds.
834
835enable_cbcs_encryption_scheme
836    Current value (from the default) = true
837      From //media/media_options.gni:76
838
839enable_cdm_host_verification
840    Current value (from the default) = false
841      From //media/media_options.gni:177
842
843enable_cdm_storage_id
844    Current value (from the default) = false
845      From //media/media_options.gni:181
846
847    Enable Storage ID which is used by CDMs. This is only available with chrome
848    branding, but may be overridden by other embedders.
849
850enable_chrome_android_internal
851    Current value (from the default) = false
852      From //build/config/android/config.gni:46
853
854    Enables using the internal Chrome for Android repository. The default
855    value depends on whether the repository is available, and if it's not but
856    this argument is manually set to True, the generation will fail.
857    The main purpose of this argument is to avoid having to maintain 2
858    repositories to support both public only and internal builds.
859
860enable_cros_libassistant
861    Current value (from the default) = false
862      From //chromeos/assistant/assistant.gni:5
863
864    Enable assistant implementation based on libassistant.
865
866enable_dav1d_decoder
867    Current value (from the default) = false
868      From //media/media_options.gni:95
869
870enable_debugallocation
871    Current value (from the default) = true
872      From //base/allocator/BUILD.gn:14
873
874    Provide a way to force disable debugallocation in Debug builds,
875    e.g. for profiling (it's more rare to profile Debug builds,
876    but people sometimes need to do that).
877
878enable_dsyms
879    Current value (from the default) = false
880      From //build/config/mac/symbols.gni:17
881
882    Produce dSYM files for targets that are configured to do so. dSYM
883    generation is controlled globally as it is a linker output (produced via
884    the //build/toolchain/mac/linker_driver.py. Enabling this will result in
885    all shared library, loadable module, and executable targets having a dSYM
886    generated.
887
888enable_extensions
889    Current value (from the default) = false
890      From //extensions/buildflags/buildflags.gni:8
891
892enable_feed_in_chrome
893    Current value (from the default) = true
894      From //components/feed/features.gni:6
895
896enable_ffmpeg_video_decoders
897    Current value (from the default) = false
898      From //media/media_options.gni:140
899
900    On Android, FFMpeg is built without video decoders by default.
901    This flag gives the option to override that decision in case there are no
902    hardware decoders. To do so, you will also need to update ffmpeg build files
903    in order to define which decoders to build in.
904
905enable_full_stack_frames_for_profiling
906    Current value (from the default) = false
907      From //build/config/compiler/BUILD.gn:70
908
909    Compile in such a way as to make it possible for the profiler to unwind full
910    stack frames. Setting this flag has a large effect on the performance of the
911    generated code than just setting profiling, but gives the profiler more
912    information to analyze.
913    Requires profiling to be set to true.
914
915enable_gpu_client_logging
916    Current value (from the default) = false
917      From //gpu/command_buffer/client/BUILD.gn:10
918
919    Enable GPU client logging without DCHECK being on.
920
921enable_gpu_service_logging
922    Current value (from the default) = false
923      From //ui/gl/BUILD.gn:23
924
925    Whether service side logging (actual calls into the GL driver) is enabled
926    or not.
927
928enable_gvr_services
929    Current value (from the default) = false
930      From //device/vr/buildflags/buildflags.gni:11
931
932enable_gwp_asan
933    Current value (from the default) = false
934      From //components/gwp_asan/buildflags/buildflags.gni:26
935
936    Convenience definition
937
938enable_gwp_asan_malloc
939    Current value (from the default) = false
940      From //components/gwp_asan/buildflags/buildflags.gni:20
941
942    Is GWP-ASan malloc/PartitionAlloc hooking enabled for chrome/ on a given
943    platform.
944
945enable_gwp_asan_partitionalloc
946    Current value (from the default) = false
947      From //components/gwp_asan/buildflags/buildflags.gni:21
948
949enable_hangout_services_extension
950    Current value (from the default) = false
951      From //chrome/common/features.gni:38
952
953    Hangout services is an extension that adds extra features to Hangouts.
954    It is enableable separately to facilitate testing.
955
956enable_hls_sample_aes
957    Current value (from the default) = false
958      From //media/media_options.gni:88
959
960    Enable HLS with SAMPLE-AES decryption.
961
962enable_incremental_d8
963    Current value (from the default) = true
964      From //build/config/android/config.gni:234
965
966    Reduce build time by using d8 incremental build.
967
968enable_internal_app_remoting_targets
969    Current value (from the default) = false
970      From //remoting/remoting_options.gni:18
971
972    Set this to enable building internal AppRemoting apps.
973
974enable_ipc_fuzzer
975    Current value (from the default) = false
976      From //tools/ipc_fuzzer/ipc_fuzzer.gni:15
977
978enable_ipc_logging
979    Current value (from the default) = true
980      From //ipc/features.gni:7
981
982    Enabling debug builds automatically sets enable_ipc_logging to true.
983
984enable_iterator_debugging
985    Current value (from the default) = false
986      From //build/config/BUILD.gn:40
987
988    When set (the default) enables C++ iterator debugging in debug builds.
989    Iterator debugging is always off in release builds (technically, this flag
990    affects the "debug" config, which is always available but applied by
991    default only in debug builds).
992   
993    Iterator debugging is generally useful for catching bugs. But it can
994    introduce extra locking to check the state of an iterator against the state
995    of the current object. For iterator- and thread-heavy code, this can
996    significantly slow execution - two orders of magnitude slowdown has been
997    seen (crbug.com/903553) and iterator debugging also slows builds by making
998    generation of snapshot_blob.bin take ~40-60 s longer. Therefore this
999    defaults to off.
1000
1001enable_jni_tracing
1002    Current value (from the default) = false
1003      From //build/config/android/rules.gni:18
1004
1005enable_keystone_registration_framework
1006    Current value (from the default) = true
1007      From //chrome/BUILD.gn:52
1008
1009    Indicates whether keystone registration framework should be enabled (see
1010    action("keystone_registration_framework") below).  There are some tests
1011    where we'd like for it to be disabled. (https://crbug.com/909080)
1012
1013enable_kythe_annotations
1014    Current value (from the default) = false
1015      From //mojo/public/tools/bindings/mojom.gni:45
1016
1017    Enable adding annotations to generated C++ headers that are used for
1018    cross-references in CodeSearch.
1019
1020enable_legacy_desktop_in_product_help
1021    Current value (from the default) = false
1022      From //components/feature_engagement/features.gni:6
1023
1024enable_libaom_decoder
1025    Current value (from the default) = false
1026      From //third_party/libaom/options.gni:5
1027
1028    Enable decoding AV1 video files.
1029
1030enable_linux_installer
1031    Current value (from the default) = false
1032      From //chrome/installer/BUILD.gn:11
1033
1034enable_location_source
1035    Current value (from the default) = true
1036      From //base/BUILD.gn:48
1037
1038    Indicates if the Location object contains the source code information
1039    (file, function, line). False means only the program counter (and currently
1040    file name) is saved.
1041
1042enable_log_error_not_reached
1043    Current value (from the default) = false
1044      From //build/config/logging.gni:9
1045
1046    Use LogErrorNotReached() for NOTREACHED().
1047
1048enable_logging_override
1049    Current value (from the default) = false
1050      From //media/media_options.gni:93
1051
1052    Enable logging override, e.g. enable DVLOGs at build time. Must not be
1053    enabled when |use_jumbo_build| is true, in which case multiple .cc files
1054    are combined and we could override more logging than expected.
1055
1056enable_mdns
1057    Current value (from the default) = false
1058      From //net/features.gni:26
1059
1060    Multicast DNS.
1061
1062enable_media_remoting
1063    Current value (from the default) = true
1064      From //media/media_options.gni:269
1065
1066    This switch defines whether the Media Remoting implementation will be built.
1067    When enabled, media is allowed to be renderer and played back on remote
1068    devices when the tab is being casted and other conditions are met.
1069
1070enable_media_remoting_rpc
1071    Current value (from the default) = false
1072      From //media/media_options.gni:275
1073
1074    Media Remoting RPC is disabled on Android since it's unused but increases
1075    the native binary size by ~70Kb.
1076
1077enable_message_center
1078    Current value (from the default) = false
1079      From //ui/base/ui_features.gni:15
1080
1081    Whether the message center should be included for displaying notifications.
1082
1083enable_mojo_media
1084    Current value (from the default) = true
1085      From //media/media_options.gni:158
1086
1087enable_mojo_tracing
1088    Current value (from the default) = false
1089      From //mojo/public/cpp/bindings/BUILD.gn:10
1090
1091enable_mojom_closure_compile
1092    Current value (from the default) = false
1093      From //mojo/public/tools/bindings/mojom.gni:41
1094
1095    Enables Closure compilation of generated JS lite bindings. In environments
1096    where compilation is supported, any mojom target "foo" will also have a
1097    corresponding "foo_js_library_for_compile" target generated.
1098
1099enable_mojom_message_id_scrambling
1100    Current value (from the default) = true
1101      From //mojo/public/tools/bindings/mojom.gni:36
1102
1103    Controls message ID scrambling behavior. If |true|, message IDs are
1104    scrambled (i.e. randomized based on the contents of //chrome/VERSION) on
1105    non-Chrome OS desktop platforms. Set to |false| to disable message ID
1106    scrambling on all platforms.
1107
1108enable_mojom_typemapping
1109    Current value (from the default) = true
1110      From //mojo/public/tools/bindings/mojom.gni:30
1111
1112    Indicates whether typemapping should be supported in this build
1113    configuration. This may be disabled when building external projects which
1114    depend on //mojo but which do not need/want all of the Chromium tree
1115    dependencies that come with typemapping.
1116   
1117    Note that (perhaps obviously) a huge amount of Chromium code will not build
1118    with typemapping disabled, so it is never valid to set this to |false| in
1119    any Chromium build configuration.
1120
1121enable_mse_mpeg2ts_stream_parser
1122    Current value (from the default) = false
1123      From //media/media_options.gni:71
1124
1125enable_mutex_priority_inheritance
1126    Current value (from the default) = false
1127      From //base/BUILD.gn:61
1128
1129    Set to true to enable mutex priority inheritance. See the comments in
1130    LockImpl::PriorityInheritanceAvailable() in lock_impl_posix.cc for the
1131    platform requirements to safely enable priority inheritance.
1132
1133enable_nacl
1134    Current value (from the default) = false
1135      From //components/nacl/features.gni:13
1136
1137enable_nacl_nonsfi
1138    Current value (from the default) = true
1139      From //components/nacl/features.gni:18
1140
1141    Non-SFI is not yet supported on mipsel
1142
1143enable_native_notifications
1144    Current value (from the default) = true
1145      From //chrome/common/features.gni:41
1146
1147    Enables usage of the system-provided notification center.
1148
1149enable_native_window_nav_buttons
1150    Current value (from the default) = false
1151      From //ui/views/features.gni:10
1152
1153    Whether we should draw the minimize, maximize/restore, and close
1154    buttons using the system theme.  Only used on Linux.
1155
1156enable_nocompile_tests
1157    Current value (from the default) = false
1158      From //build/nocompile.gni:65
1159
1160enable_oculus_vr
1161    Current value (from the default) = false
1162      From //device/vr/buildflags/buildflags.gni:27
1163
1164    To build with Oculus support, the Oculus SDK for Windows will need to be
1165    installed in third_party/libovr/src.  See
1166    third_party/libovr/README.chromium for details.
1167
1168enable_offline_pages
1169    Current value (from the default) = true
1170      From //components/offline_pages/buildflags/features.gni:8
1171
1172    Whether to enable OfflinePages support. Currently user-visible features
1173    are Android-only.
1174
1175enable_offline_pages_harness
1176    Current value (from the default) = false
1177      From //components/offline_pages/buildflags/features.gni:12
1178
1179    This enables test API for locally-built harness which is used for quality
1180    evaluations. Requires setting this variable manually at local environment.
1181
1182enable_one_click_signin
1183    Current value (from the default) = false
1184      From //chrome/common/features.gni:45
1185
1186enable_openscreen
1187    Current value (from the default) = false
1188      From //chrome/browser/media/router/features.gni:11
1189
1190    Exclude openscreen in NaCl, since there is no packet support
1191    in that build configuration. Once NaCl goes away, this check should be
1192    removed.
1193
1194enable_openvr
1195    Current value (from the default) = false
1196      From //device/vr/buildflags/buildflags.gni:14
1197
1198enable_openxr
1199    Current value (from the default) = false
1200      From //device/vr/buildflags/buildflags.gni:22
1201
1202    To build with OpenXR support, the OpenXR Loader needs to be pulled to
1203    third_party/openxr.
1204    TODO (crbug.com/998160): there's an issue affecting the __preload macro
1205    used in DirectXMathVector.inl on Windows on Arm.
1206
1207enable_pdf
1208    Current value (from the default) = false
1209      From //pdf/features.gni:12
1210
1211enable_perfetto_benchmarks
1212    Current value (from the default) = false
1213      From //third_party/perfetto/gn/perfetto.gni:175
1214
1215enable_perfetto_fuzzers
1216    Current value (from the default) = false
1217      From //third_party/perfetto/gn/perfetto.gni:178
1218
1219enable_perfetto_heapprofd
1220    Current value (from the default) = false
1221      From //third_party/perfetto/gn/perfetto.gni:146
1222
1223enable_perfetto_integration_tests
1224    Current value (from the default) = false
1225      From //third_party/perfetto/gn/perfetto.gni:173
1226
1227enable_perfetto_ipc
1228    Current value (from the default) = true
1229      From //third_party/perfetto/gn/perfetto.gni:138
1230
1231    Allow the embedder to use the IPC layer. In turn this allows to use the
1232    system backend in the client library.
1233    This includes building things that rely on POSIX sockets, this places
1234    limitations on the supported operating systems.
1235
1236enable_perfetto_platform_services
1237    Current value (from the default) = false
1238      From //third_party/perfetto/gn/perfetto.gni:132
1239
1240enable_perfetto_tools
1241    Current value (from the default) = false
1242      From //third_party/perfetto/gn/perfetto.gni:164
1243
1244enable_perfetto_trace_processor
1245    Current value (from the default) = true
1246      From //third_party/perfetto/gn/perfetto.gni:153
1247
1248enable_perfetto_trace_processor_json
1249    Current value (from the default) = true
1250      From //third_party/perfetto/gn/perfetto.gni:206
1251
1252enable_perfetto_trace_processor_linenoise
1253    Current value (from the default) = false
1254      From //third_party/perfetto/gn/perfetto.gni:210
1255
1256enable_perfetto_trace_processor_percentile
1257    Current value (from the default) = false
1258      From //third_party/perfetto/gn/perfetto.gni:202
1259
1260enable_perfetto_trace_processor_sqlite
1261    Current value (from the default) = true
1262      From //third_party/perfetto/gn/perfetto.gni:198
1263
1264enable_perfetto_ui
1265    Current value (from the default) = false
1266      From //third_party/perfetto/gn/perfetto.gni:167
1267
1268    Allows to build the UI (TypeScript/ HTML / WASM)
1269
1270enable_perfetto_unittests
1271    Current value (from the default) = true
1272      From //third_party/perfetto/gn/perfetto.gni:169
1273
1274enable_perfetto_version_gen
1275    Current value (from the default) = false
1276      From //third_party/perfetto/gn/perfetto.gni:184
1277
1278enable_perfetto_watchdog
1279    Current value (from the default) = false
1280      From //third_party/perfetto/gn/perfetto.gni:160
1281
1282enable_platform_ac3_eac3_audio
1283    Current value (from the default) = false
1284      From //media/media_options.gni:66
1285
1286    Enables AC3/EAC3 audio demuxing. This is enabled only on Chromecast, since
1287    it only provides demuxing, and is only useful for AC3/EAC3 audio
1288    pass-through to HDMI sink on Chromecast.
1289
1290enable_platform_dolby_vision
1291    Current value (from the default) = false
1292      From //media/media_options.gni:85
1293
1294    Enable Dolby Vision demuxing. Enable by default for Chromecast. Actual
1295    decoding must be provided by the platform. Note some Dolby Vision profiles
1296    which are encoded using HEVC require |enable_platform_hevc| to be enabled.
1297
1298enable_platform_hevc
1299    Current value (from the default) = false
1300      From //media/media_options.gni:80
1301
1302    Enable HEVC/H265 demuxing. Actual decoding must be provided by the
1303    platform. Enabled by default for Chromecast.
1304
1305enable_platform_mpeg_h_audio
1306    Current value (from the default) = false
1307      From //media/media_options.gni:68
1308
1309enable_plugins
1310    Current value (from the default) = false
1311      From //ppapi/buildflags/buildflags.gni:10
1312
1313enable_precompiled_headers
1314    Current value (from the default) = true
1315      From //build/config/pch.gni:11
1316
1317    Precompiled header file support is by default available,
1318    but for distributed build system uses (like goma) or when
1319    doing official builds.
1320
1321enable_print_media_l10n
1322    Current value (from the default) = false
1323      From //components/printing/browser/BUILD.gn:9
1324
1325    For now, we only enable print media localization on Chrome OS.
1326
1327enable_print_preview
1328    Current value (from the default) = false
1329      From //printing/buildflags/buildflags.gni:17
1330
1331    Enable printing with print preview. It implies enable_basic_printing.
1332    Note: It would be convenient to not repeat many of the same conditions in
1333    enable_basic_printing below. However, GN does not allow the use of
1334    enable_basic_printing within the same declare_args() block.
1335
1336enable_profiling
1337    Current value (from the default) = false
1338      From //build/config/compiler/compiler.gni:48
1339
1340    Compile in such a way as to enable profiling of the generated code. For
1341    example, don't omit the frame pointer and leave in symbols.
1342
1343enable_proguard_obfuscation
1344    Current value (from the default) = true
1345      From //base/android/proguard/proguard.gni:8
1346
1347    Controls whether proguard obfuscation is enabled for targets
1348    configured to use it.
1349
1350enable_random_mojo_delays
1351    Current value (from the default) = false
1352      From //mojo/public/cpp/bindings/BUILD.gn:16
1353
1354    enable_random_mojo_delays starts a task runner that periodically pauses
1355    random Mojo bindings and later resumes them, in order to test whether parts
1356    of the code implicitly rely on FIFO processing of messages sent on different
1357    message pipes (which they should not).
1358
1359enable_reading_list
1360    Current value (from the default) = true
1361      From //components/reading_list/features/reading_list.gni:8
1362
1363    Controls whether reading list support is active or not. Currently only
1364    supported on iOS (on other platforms, the feature is always disabled).
1365
1366enable_remoting
1367    Current value (from the default) = true
1368      From //remoting/remoting_enable.gni:12
1369
1370enable_remoting_jscompile
1371    Current value (from the default) = false
1372      From //remoting/remoting_options.gni:15
1373
1374    Set this to run the jscompile checks after building the webapp.
1375
1376enable_reporting
1377    Current value (from the default) = true
1378      From //net/features.gni:29
1379
1380    Reporting not used on iOS.
1381
1382enable_resource_whitelist_generation
1383    Current value (from the default) = false
1384      From //build/toolchain/gcc_toolchain.gni:27
1385
1386enable_runtime_media_renderer_selection
1387    Current value (from the default) = false
1388      From //media/media_options.gni:172
1389
1390    When enabled, this feature allows developers to use a runtime flag to
1391    choose the implementation of the renderer that is used. On a build which
1392    enables the mojo renderer, if --disable-mojo-renderer is passed at start-up,
1393    the "default" renderer will be used instead. Both renderer implementations
1394    will be linked if this feature is enabled, increasing the binary size. This
1395    feature does not make sense if the mojo renderer is not enabled.
1396
1397enable_service_discovery
1398    Current value (from the default) = false
1399      From //chrome/common/features.gni:47
1400
1401enable_session_service
1402    Current value (from the default) = false
1403      From //chrome/common/features.gni:51
1404
1405    Enables use of the session service, which is enabled by default.
1406    Android stores them separately on the Java side.
1407
1408enable_stripping
1409    Current value (from the default) = false
1410      From //build/config/mac/symbols.gni:24
1411
1412    Strip symbols from linked targets by default. If this is enabled, the
1413    //build/config/mac:strip_all config will be applied to all linked targets.
1414    If custom stripping parameters are required, remove that config from a
1415    linked target and apply custom -Wcrl,strip flags. See
1416    //build/toolchain/mac/linker_driver.py for more information.
1417
1418enable_supervised_users
1419    Current value (from the default) = true
1420      From //chrome/common/features.gni:53
1421
1422enable_swiftshader
1423    Current value (from the default) = false
1424      From //ui/gl/BUILD.gn:15
1425
1426enable_test_mojo_media_client
1427    Current value (from the default) = false
1428      From //media/media_options.gni:164
1429
1430    Enable the TestMojoMediaClient to be used in mojo MediaService. This is for
1431    testing only and will override the default platform MojoMediaClient, if any.
1432
1433enable_trichrome_synchronized_proguard
1434    Current value (from the default) = false
1435      From //chrome/android/trichrome.gni:27
1436
1437    WIP: Enable synchronized proguard for Trichrome. (http://crbug.com/901465)
1438    Only affects trichrome targets when !is_java_debug.
1439
1440enable_typescript_bindings
1441    Current value (from the default) = false
1442      From //mojo/public/tools/bindings/mojom.gni:48
1443
1444    Enables generating Typescript bindings and compiling them to JS bindings.
1445
1446enable_vr
1447    Current value (from the default) = false
1448      From //device/vr/buildflags/buildflags.gni:35
1449
1450enable_vulkan
1451    Current value (from the default) = true
1452      From //gpu/vulkan/features.gni:11
1453
1454    Enable experimental vulkan backend.
1455
1456enable_wayland_server
1457    Current value (from the default) = false
1458      From //chrome/common/features.gni:56
1459
1460    Indicates if Wayland display server support is enabled.
1461
1462enable_websockets
1463    Current value (from the default) = true
1464      From //net/features.gni:13
1465
1466    WebSockets and socket stream code are not used on iOS and are optional in
1467    cronet.
1468
1469enable_webui_tab_strip
1470    Current value (from the default) = false
1471      From //ui/webui/webui_features.gni:17
1472
1473    Enable the WebUI version of the browser's tab strip.
1474
1475enable_widevine
1476    Current value (from the default) = true
1477      From //third_party/widevine/cdm/widevine.gni:13
1478
1479    Enables Widevine key system support. Enabled by default in Google Chrome,
1480    on Android and Fuchsia platforms.
1481    Can be optionally enabled in Chromium on non-Android platforms. Please see
1482    //src/third_party/widevine/LICENSE file for details.
1483
1484enable_wifi_display
1485    Current value (from the default) = false
1486      From //extensions/buildflags/buildflags.gni:12
1487
1488    Enables Wi-Fi Display functionality
1489    WARNING: This enables MPEG Transport Stream (MPEG-TS) encoding!
1490
1491enable_windows_mr
1492    Current value (from the default) = false
1493      From //device/vr/buildflags/buildflags.gni:16
1494
1495fatal_linker_warnings
1496    Current value (from the default) = true
1497      From //build/config/compiler/BUILD.gn:78
1498
1499    Enable fatal linker warnings. Building Chromium with certain versions
1500    of binutils can cause linker warning.
1501
1502ffmpeg_branding
1503    Current value (from the default) = "Chromium"
1504      From //third_party/ffmpeg/ffmpeg_options.gni:34
1505
1506    Controls whether we build the Chromium or Google Chrome version of FFmpeg.
1507    The Google Chrome version contains additional codecs. Typical values are
1508    Chromium, Chrome, and ChromeOS.
1509
1510ffmpeg_use_atomics_fallback
1511    Current value (from the default) = false
1512      From //third_party/ffmpeg/ffmpeg_options.gni:51
1513
1514    Set to true to force the use of ffmpeg's stdatomic fallback code.
1515   
1516    Windows and GCC prior to 4.9 lack stdatomic.h.
1517   
1518    This is also useful for developers who use icecc, which relies upon
1519    clang's -frewrite-includes flag which is broken with #include_next
1520    directives as used in chromium's clang stdatomic.h.
1521    Some background: https://bugs.llvm.org/show_bug.cgi?id=26828
1522
1523fieldtrial_testing_like_official_build
1524    Current value (from the default) = false
1525      From //components/variations/service/BUILD.gn:14
1526
1527    Set to true make a build that disables activation of field trial tests
1528    specified in testing/variations/fieldtrial_testing_config.json.
1529    Note: this setting is ignored if is_chrome_branded.
1530    TODO(thakis): It's strange this is called "_like_official_build" but then
1531    checks is_chrome_branded, not is_official_build.
1532
1533forbid_non_component_debug_builds
1534    Current value (from the default) = true
1535      From //build/config/compiler/compiler.gni:89
1536
1537    Whether an error should be raised on attempts to make debug builds with
1538    is_component_build=false. Very large debug symbols can have unwanted side
1539    effects so this is enforced by default for chromium.
1540
1541force_local_build_id
1542    Current value (from the default) = false
1543      From //build/config/compiler/BUILD.gn:139
1544
1545    By default only the binaries in official builds get build IDs.
1546
1547full_wpo_on_official
1548    Current value (from the default) = false
1549      From //build/config/compiler/compiler.gni:183
1550
1551gcc_target_rpath
1552    Current value (from the default) = ""
1553      From //build/config/gcc/BUILD.gn:19
1554
1555    When non empty, overrides the target rpath value. This allows a user to
1556    make a Chromium build where binaries and shared libraries are meant to be
1557    installed into separate directories, like /usr/bin/chromium and
1558    /usr/lib/chromium for instance. It is useful when a build system that
1559    generates a whole target root filesystem (like Yocto) is used on top of gn,
1560    especially when cross-compiling.
1561    Note: this gn arg is similar to gyp target_rpath generator flag.
1562
1563generate_linker_map
1564    Current value (from the default) = false
1565      From //build/toolchain/toolchain.gni:26
1566
1567    Used for binary size analysis.
1568
1569generate_order_files
1570    Current value (from the default) = false
1571      From //build/config/chrome_build.gni:17
1572
1573    Turn this on to generate order files. See
1574    https://chromium.googlesource.com/chromium/src/+/master/docs/win_order_files.md
1575
1576gold_path
1577    Current value (from the default) = false
1578      From //build/config/compiler/BUILD.gn:74
1579
1580    When we are going to use gold we need to find it.
1581    This is initialized below, after use_gold might have been overridden.
1582
1583goma_dir
1584    Current value (from the default) = "/home/daniel/goma"
1585      From //build/toolchain/goma.gni:26
1586
1587    Absolute directory containing the gomacc binary.
1588
1589google_api_key
1590    Current value (from the default) = ""
1591      From //google_apis/BUILD.gn:46
1592
1593    Set these to bake the specified API keys and OAuth client
1594    IDs/secrets into your build.
1595   
1596    If you create a build without values baked in, you can instead
1597    set environment variables to provide the keys at runtime (see
1598    src/google_apis/google_api_keys.h for details).  Features that
1599    require server-side APIs may fail to work if no keys are
1600    provided.
1601   
1602    Note that if you are building an official build or if
1603    use_official_google_api_keys has been set to trie (explicitly or
1604    implicitly), these values will be ignored and the official
1605    keys will be used instead.
1606
1607google_default_client_id
1608    Current value (from the default) = ""
1609      From //google_apis/BUILD.gn:49
1610
1611    See google_api_key.
1612
1613google_default_client_secret
1614    Current value (from the default) = ""
1615      From //google_apis/BUILD.gn:52
1616
1617    See google_api_key.
1618
1619gtest_enable_absl_printers
1620    Current value (from the default) = false
1621      From //third_party/googletest/BUILD.gn:9
1622
1623    If true, it assumes that //third_party/abseil-cpp is an available dependency.
1624
1625gtk_version
1626    Current value (from the default) = 3
1627      From //build/config/linux/gtk/gtk.gni:12
1628
1629    The (major) version of GTK to build against.
1630
1631has_gomacc_path
1632    Current value (from the default) = false
1633      From //build/toolchain/goma.gni:14
1634
1635    This flag is for ChromeOS compiler wrapper.
1636    By passing gomacc path via GOMACC_PATH environment variable, ChromeOS'
1637    compiler wrapper invokes gomacc inside it.
1638
1639has_native_accessibility
1640    Current value (from the default) = false
1641      From //ui/base/ui_features.gni:12
1642
1643    Whether the platform provides a native accessibility toolkit.
1644
1645host_byteorder
1646    Current value (from the default) = "undefined"
1647      From //build/config/host_byteorder.gni:9
1648
1649host_cpu
1650    Current value (from the default) = "x64"
1651      (Internally set; try `gn help host_cpu`.)
1652
1653host_os
1654    Current value (from the default) = "linux"
1655      (Internally set; try `gn help host_os`.)
1656
1657host_pkg_config
1658    Current value (from the default) = ""
1659      From //build/config/linux/pkg_config.gni:36
1660
1661    A optional pkg-config wrapper to use for tools built on the host.
1662
1663host_toolchain
1664    Current value (from the default) = ""
1665      From //build/config/BUILDCONFIG.gn:148
1666
1667    This should not normally be set as a build argument.  It's here so that
1668    every toolchain can pass through the "global" value via toolchain_args().
1669
1670hwasan_platform
1671    Current value (from the default) = false
1672      From //build/config/sanitizers/sanitizers.gni:21
1673
1674    Specify whether to target the platform's copy of the HWASan runtime,
1675    rather than one bundled with the application.
1676
1677icu_use_data_file
1678    Current value (from the default) = true
1679      From //third_party/icu/config.gni:8
1680
1681    Tells icu to load an external data file rather than rely on the icudata
1682    being linked directly into the binary.
1683
1684ignore_elf32_limitations
1685    Current value (from the default) = false
1686      From //build_overrides/build.gni:39
1687
1688    Android 32-bit non-component, non-clang builds cannot have symbol_level=2
1689    due to 4GiB file size limit, see https://crbug.com/648948.
1690    Set this flag to true to skip the assertion.
1691
1692include_transport_security_state_preload_list
1693    Current value (from the default) = true
1694      From //net/features.gni:37
1695
1696    Includes the transport security state preload list. This list includes
1697    mechanisms (e.g. HSTS, HPKP) to enforce trusted connections to a significant
1698    set of hardcoded domains. While this list has a several hundred KB of binary
1699    size footprint, this flag should not be disabled unless the embedder is
1700    willing to take the responsibility to make sure that all important
1701    connections use HTTPS.
1702
1703include_vr_data
1704    Current value (from the default) = false
1705      From //device/vr/buildflags/buildflags.gni:40
1706
1707    Whether to include VR extras like test APKs in non-VR-specific targets
1708
1709incremental_apk_by_default
1710    Current value (from the default) = false
1711      From //build/config/android/config.gni:192
1712
1713    Build incremental targets whenever possible.
1714    Ex. with this arg set to true, the chrome_public_apk target result in
1715    chrome_public_apk_incremental being built.
1716
1717init_stack_vars
1718    Current value (from the default) = false
1719      From //build/config/compiler/BUILD.gn:145
1720
1721    Initialize all local variables with a pattern. This flag will fill uninitialized
1722    floating-point types (and 32-bit pointers) with 0xFF and the rest with 0xAA.
1723    This allows to make behavior of uninitialized memory bugs consistent, easier to
1724    recognize when debugging and often just to crash immediately.
1725
1726ios_deployment_target
1727    Current value (from the default) = "12.0"
1728      From //build/config/ios/ios_sdk_overrides.gni:10
1729
1730    Version of iOS that we're targeting.
1731
1732is_asan
1733    Current value (from the default) = false
1734      From //build/config/sanitizers/sanitizers.gni:12
1735
1736    Compile for Address Sanitizer to find memory bugs.
1737
1738is_cast_audio_only
1739    Current value (from the default) = false
1740      From //build/config/chromecast_build.gni:23
1741
1742    Set this true for an audio-only Chromecast build.
1743
1744is_cast_desktop_build
1745    Current value (from the default) = false
1746      From //build/config/chromecast_build.gni:39
1747
1748    True if Chromecast build is targeted for linux desktop. This type of build
1749    is useful for testing and development, but currently supports only a subset
1750    of Cast functionality. Though this defaults to true for x86 Linux devices,
1751    this should be overriden manually for an embedded x86 build.
1752    TODO(slan): Remove instances of this when x86 is a fully supported platform.
1753
1754is_cfi
1755    Current value (from the default) = false
1756      From //build/config/sanitizers/sanitizers.gni:58
1757
1758    Compile with Control Flow Integrity to protect virtual calls and casts.
1759    See http://clang.llvm.org/docs/ControlFlowIntegrity.html
1760   
1761    TODO(pcc): Remove this flag if/when CFI is enabled in all official builds.
1762
1763is_chrome_branded
1764    Current value (from the default) = false
1765      From //build/config/chrome_build.gni:9
1766
1767    Select the desired branding flavor. False means normal Chromium branding,
1768    true means official Google Chrome branding (requires extra Google-internal
1769    resources).
1770
1771is_chromecast
1772    Current value (from the default) = false
1773      From //build/config/chromecast_build.gni:11
1774
1775    Set this true for a Chromecast build. Chromecast builds are supported on
1776    Linux and Android.
1777
1778is_clang
1779    Current value (from the default) = true
1780      From //build/config/BUILDCONFIG.gn:137
1781
1782    Set to true when compiling with the Clang compiler.
1783
1784is_component_build
1785    Current value (from the default) = true
1786      From //build/config/BUILDCONFIG.gn:165
1787
1788    Component build. Setting to true compiles targets declared as "components"
1789    as shared libraries loaded dynamically. This speeds up development time.
1790    When false, components will be linked statically.
1791   
1792    For more information see
1793    https://chromium.googlesource.com/chromium/src/+/master/docs/component_build.md
1794
1795is_component_ffmpeg
1796    Current value (from the default) = true
1797      From //third_party/ffmpeg/ffmpeg_options.gni:41
1798
1799    Set true to build ffmpeg as a shared library. NOTE: this means we should
1800    always consult is_component_ffmpeg instead of is_component_build for
1801    ffmpeg targets. This helps linux chromium packagers that swap out our
1802    ffmpeg.so with their own. See discussion here
1803    https://groups.google.com/a/chromium.org/forum/#!msg/chromium-packagers/R5rcZXWxBEQ/B6k0zzmJbvcJ
1804
1805is_ct_supported
1806    Current value (from the default) = true
1807      From //services/network/public/cpp/features.gni:10
1808
1809    Certificate transparency is not supported on iOS.
1810    TODO(mmenke): It's actually not supported on Android, either.
1811
1812is_debug
1813    Current value (from the default) = true
1814      From //build/config/BUILDCONFIG.gn:155
1815
1816    Debug build. Enabling official builds automatically sets is_debug to false.
1817
1818is_desktop_linux
1819    Current value (from the default) = false
1820      From //build/config/BUILDCONFIG.gn:134
1821
1822    Whether we're a traditional desktop unix.
1823
1824is_hwasan
1825    Current value (from the default) = false
1826      From //build/config/sanitizers/sanitizers.gni:17
1827
1828    Compile for Hardware-Assisted Address Sanitizer to find memory bugs
1829    (android/arm64 only).
1830    See http://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html
1831
1832is_java_debug
1833    Current value (from the default) = true
1834      From //build/config/android/config.gni:173
1835
1836    Java debug on Android. Having this on enables multidexing, and turning it
1837    off will enable proguard.
1838
1839is_lsan
1840    Current value (from the default) = false
1841      From //build/config/sanitizers/sanitizers.gni:24
1842
1843    Compile for Leak Sanitizer to find leaks.
1844
1845is_msan
1846    Current value (from the default) = false
1847      From //build/config/sanitizers/sanitizers.gni:27
1848
1849    Compile for Memory Sanitizer to find uninitialized reads.
1850
1851is_multi_dll_chrome
1852    Current value (from the default) = false
1853      From //build/config/chrome_build.gni:13
1854
1855    Break chrome.dll into multple pieces based on process type. Only available
1856    on Windows.
1857
1858is_nacl_glibc
1859    Current value (from the default) = false
1860      From //build/config/nacl/config.gni:9
1861
1862    Native Client supports both Newlib and Glibc C libraries where Newlib
1863    is assumed to be the default one; use this to determine whether Glibc
1864    is being used instead.
1865
1866is_official_build
1867    Current value (from the default) = false
1868      From //build/config/BUILDCONFIG.gn:131
1869
1870    Set to enable the official build level of optimization. This has nothing
1871    to do with branding, but enables an additional level of optimization above
1872    release (!is_debug). This might be better expressed as a tri-state
1873    (debug, release, official) but for historical reasons there are two
1874    separate flags.
1875
1876is_perfetto_build_generator
1877    Current value (from the default) = false
1878      From //third_party/perfetto/gn/perfetto.gni:78
1879
1880    All the tools/gen_* scripts set this to true. This is mainly used to locate
1881    .gni files from //gn rather than //build.
1882
1883is_perfetto_embedder
1884    Current value (from the default) = false
1885      From //third_party/perfetto/gn/perfetto.gni:83
1886
1887    This is for override via `gn args` (e.g. for tools/gen_xxx). Embedders
1888    based on GN (e.g. v8) should NOT set this and instead directly sets
1889    perfetto_build_with_embedder=true in their GN files.
1890
1891is_tsan
1892    Current value (from the default) = false
1893      From //build/config/sanitizers/sanitizers.gni:30
1894
1895    Compile for Thread Sanitizer to find threading bugs.
1896
1897is_ubsan
1898    Current value (from the default) = false
1899      From //build/config/sanitizers/sanitizers.gni:34
1900
1901    Compile for Undefined Behaviour Sanitizer to find various types of
1902    undefined behaviour (excludes vptr checks).
1903
1904is_ubsan_no_recover
1905    Current value (from the default) = false
1906      From //build/config/sanitizers/sanitizers.gni:37
1907
1908    Halt the program if a problem is detected.
1909
1910is_ubsan_null
1911    Current value (from the default) = false
1912      From //build/config/sanitizers/sanitizers.gni:40
1913
1914    Compile for Undefined Behaviour Sanitizer's null pointer checks.
1915
1916is_ubsan_security
1917    Current value (from the default) = false
1918      From //build/config/sanitizers/sanitizers.gni:88
1919
1920    Enables core ubsan security features. Will later be removed once it matches
1921    is_ubsan.
1922
1923is_ubsan_vptr
1924    Current value (from the default) = false
1925      From //build/config/sanitizers/sanitizers.gni:43
1926
1927    Compile for Undefined Behaviour Sanitizer's vptr checks.
1928
1929is_unsafe_developer_build
1930    Current value (from the default) = true
1931      From //base/BUILD.gn:53
1932
1933    Unsafe developer build. Has developer-friendly features that may weaken or
1934    disable security measures like sandboxing or ASLR.
1935    IMPORTANT: Unsafe developer builds should never be distributed to end users.
1936
1937is_win_fastlink
1938    Current value (from the default) = false
1939      From //build/config/compiler/compiler.gni:73
1940
1941    Tell VS to create a PDB that references information in .obj files rather
1942    than copying it all. This should improve linker performance. mspdbcmf.exe
1943    can be used to convert a fastlink pdb to a normal one.
1944
1945jumbo_build_excluded
1946    Current value (from the default) = []
1947      From //build/config/jumbo.gni:27
1948
1949    A list of build targets to exclude from jumbo builds, for optimal
1950    round trip time when frequently changing a set of cpp files. The
1951    targets can be just the short name (in which case it matches any
1952    target with that name), a directory prefixed with the root
1953    specifier //, or a full build target label.
1954   
1955    Example:
1956    These would all exclude the "browser" target in a file
1957    content/browser/BUILD.gn, and potentially more.
1958   
1959    jumbo_build_excluded = [ "browser" ]
1960    jumbo_build_excluded = [ "//content/browser" ]
1961    jumbo_build_excluded = [ "//content/browser:browser" ]
1962
1963jumbo_file_merge_limit
1964    Current value (from the default) = -1
1965      From //build/config/jumbo.gni:43
1966
1967    How many files to group on average. Smaller numbers give more
1968    parallellism, higher numbers give less total CPU usage. Higher
1969    numbers also give longer single-file recompilation times.
1970   
1971    Recommendations:
1972    Higher numbers than 100 does not reduce wall clock compile times
1973    even for 4 cores or less so no reason to go higher than 100.
1974    Going from 50 to 100 with a 4 core CPU saves about 3% CPU time and
1975    3% wall clock time in a tree with blink, v8 and content
1976    jumbofied. At the same time it increases the compile time for the
1977    largest jumbo chunks by 10-20% and reduces the chance to use all
1978    available CPU cores. So set the default to 50 to balance between
1979    high and low-core build performance. -1 means do the default which
1980    varies depending on whether goma is enabled.
1981
1982ldso_path
1983    Current value (from the default) = ""
1984      From //build/config/gcc/BUILD.gn:20
1985
1986libcxx_abi_unstable
1987    Current value (from the default) = true
1988      From //build/config/c++/BUILD.gn:17
1989
1990    lldb pretty printing only works when libc++ is built in the __1 (or __ndk1)
1991    namespaces.  For pretty printing to work out-of-the-box on Mac (where lldb
1992    is primarily used), this flag is set to false to build with the __1
1993    namespace (to maintain ABI compatibility, this implies building without
1994    _LIBCPP_ABI_UNSTABLE).  This is not necessary on non-component builds
1995    because we leave the ABI version set to __1 in that case because libc++
1996    symbols are not exported.
1997    TODO(thomasanderson): Set this to true by default once rL352899 is available
1998    in MacOS's lldb.
1999
2000libcxx_is_shared
2001    Current value (from the default) = true
2002      From //build/config/c++/c++.gni:44
2003
2004    WARNING: Setting this to a non-default value is highly discouraged.
2005    If true, libc++ will be built as a shared library; otherwise libc++ will be
2006    linked statically. Setting this to something other than the default is
2007    unsupported and can be broken by libc++ rolls. Note that if this is set to
2008    true, you must also set libcxx_abi_unstable=false, which is bad for
2009    performance and memory use.
2010
2011libcxx_natvis_include
2012    Current value (from the default) = true
2013      From //build/config/c++/c++.gni:30
2014
2015    Builds libcxx Natvis into the symbols for type visualization.
2016    Set to false to workaround http://crbug.com/966676 and
2017    http://crbug.com/966687.
2018
2019libcxx_svn_revision
2020    Current value (from the default) = "361348"
2021      From //buildtools/deps_revisions.gni:8
2022
2023    The libc++ svn revision that belongs to the git hash in DEPS. Used to cause
2024    full rebuilds on libc++ rolls.
2025
2026libyuv_disable_jpeg
2027    Current value (from the default) = false
2028      From //third_party/libyuv/libyuv.gni:15
2029
2030libyuv_include_tests
2031    Current value (from the default) = false
2032      From //third_party/libyuv/libyuv.gni:14
2033
2034libyuv_symbols_visible
2035    Current value (from the default) = false
2036      From //third_party/libyuv/BUILD.gn:19
2037
2038    When building a shared library using a target in WebRTC or
2039    Chromium projects that depends on libyuv, setting this flag
2040    to true makes libyuv symbols visible inside that library.
2041
2042libyuv_use_gflags
2043    Current value (from the default) = true
2044      From //third_party/libyuv/BUILD.gn:14
2045
2046    Set to false to disable building with gflags.
2047
2048libyuv_use_mmi
2049    Current value (from the default) = false
2050      From //third_party/libyuv/libyuv.gni:22
2051
2052libyuv_use_msa
2053    Current value (from the default) = false
2054      From //third_party/libyuv/libyuv.gni:20
2055
2056libyuv_use_neon
2057    Current value (from the default) = false
2058      From //third_party/libyuv/libyuv.gni:17
2059
2060link_pulseaudio
2061    Current value (from the default) = false
2062      From //media/media_options.gni:43
2063
2064    Allows distributions to link pulseaudio directly (DT_NEEDED) instead of
2065    using dlopen. This helps with automated detection of ABI mismatches and
2066    prevents silent errors.
2067
2068lint_android_sdk_root
2069    Current value (from the default) = "//third_party/android_sdk/public"
2070      From //build/config/android/config.gni:144
2071
2072lint_android_sdk_version
2073    Current value (from the default) = 26
2074      From //build/config/android/config.gni:145
2075
2076linux_use_bundled_binutils
2077    Current value (from the default) = false
2078      From //build/config/compiler/BUILD.gn:60
2079
2080llvm_force_head_revision
2081    Current value (from the default) = false
2082      From //build/toolchain/toolchain.gni:18
2083
2084    If this is set to true, or if LLVM_FORCE_HEAD_REVISION is set to 1
2085    in the environment, we use the revision in the llvm repo to determine
2086    the CLANG_REVISION to use, instead of the version hard-coded into
2087    //tools/clang/scripts/update.py. This should only be used in
2088    conjunction with setting LLVM_FORCE_HEAD_REVISION in the
2089    environment when `gclient runhooks` is run as well.
2090
2091mac_sdk_min
2092    Current value (from the default) = "10.14"
2093      From //build/config/mac/mac_sdk_overrides.gni:12
2094
2095max_jobs_per_link
2096    Current value (from the default) = 8
2097      From //build/config/compiler/compiler.gni:68
2098
2099    Limit the number of jobs (threads/processes) the linker is allowed
2100    to use (for linkers that support this).
2101
2102media_use_ffmpeg
2103    Current value (from the default) = true
2104      From //media/media_options.gni:48
2105
2106    Enable usage of FFmpeg within the media library. Used for most software
2107    based decoding, demuxing, and sometimes optimized FFTs. If disabled,
2108    implementors must provide their own demuxers and decoders.
2109
2110media_use_libvpx
2111    Current value (from the default) = true
2112      From //media/media_options.gni:52
2113
2114    Enable usage of libvpx within the media library. Used for software based
2115    decoding of VP9 and VP8A type content.
2116
2117mips_use_mmi
2118    Current value (from the default) = false
2119      From //build/config/mips.gni:13
2120
2121    MIPS MultiMedia Instruction compilation flag.
2122
2123mojo_media_host
2124    Current value (from the default) = "gpu"
2125      From //media/media_options.gni:262
2126
2127    The process that the mojo MediaService runs in. By default, all services
2128    registered in |mojo_media_services| are hosted in the MediaService, with the
2129    exception that when |enable_library_cdms| is true, the "cdm" service will
2130    run in a separate CdmService in the CDM (utility) process, while other
2131    |mojo_media_services| still run in the MediaService in the process specified
2132    by "mojo_media_host".
2133    Valid options are:
2134    - "none": Do not use mojo media service.
2135    - "browser": Use mojo media service hosted in the browser process.
2136    - "gpu": Use mojo media service hosted in the gpu process.
2137    - "utility": Use mojo media service hosted in the utility process.
2138
2139mojo_media_services
2140    Current value (from the default) = ["cdm", "audio_decoder", "video_decoder"]
2141      From //media/media_options.gni:249
2142
2143    A list of mojo media services that should be used in the media pipeline.
2144    Must not be empty if |enable_mojo_media| is true.
2145    Valid entries in the list are:
2146    - "renderer": Use mojo-based media Renderer service.
2147    - "cdm": Use mojo-based Content Decryption Module.
2148    - "audio_decoder": Use mojo-based audio decoder in the default media
2149                       Renderer. Cannot be used with the mojo Renderer above.
2150    - "video_decoder": Use mojo-based video decoder in the default media
2151                       Renderer. Cannot be used with the mojo Renderer above.
2152
2153mojom_message_id_salt_path
2154    Current value (from the default) = "//chrome/VERSION"
2155      From //mojo/public/tools/bindings/mojom.gni:96
2156
2157    The path to a file whose contents can be used as the basis for a message
2158    ID scrambling salt.
2159
2160mojom_message_id_salt_suffix_path
2161    Current value (from the default) = ""
2162      From //mojo/public/tools/bindings/mojom.gni:106
2163
2164monolithic_binaries
2165    Current value (from the default) = false
2166      From //third_party/perfetto/gn/perfetto.gni:189
2167
2168    Only for local development. When true the binaries (perfetto, traced, ...)
2169    are monolithic and don't use a common shared library. This is mainly to
2170    avoid LD_LIBRARY_PATH dances when testing locally.
2171
2172msan_track_origins
2173    Current value (from the default) = 2
2174      From //build/config/sanitizers/sanitizers.gni:48
2175
2176    Track where uninitialized memory originates from. From fastest to slowest:
2177    0 - no tracking, 1 - track only the initial allocation site, 2 - track the
2178    chain of stores leading from allocation site to use site.
2179
2180multidex_in_release
2181    Current value (from the default) = false
2182      From //chrome/android/chrome_public_apk_tmpl.gni:21
2183
2184    Enable multidex in release builds.
2185
2186ndk_api_level_at_least_26
2187    Current value (from the default) = false
2188      From //third_party/angle/gni/angle.gni:63
2189
2190notouch_build
2191    Current value (from the default) = false
2192      From //build/config/android/config.gni:210
2193
2194    Enable the chrome build for devices without touchscreens.
2195
2196optimize_for_fuzzing
2197    Current value (from the default) = false
2198      From //build/config/sanitizers/sanitizers.gni:96
2199
2200    Optimize for coverage guided fuzzing (balance between speed and number of
2201    branches). Can be also used to remove non-determinism and other issues.
2202
2203optimize_webui
2204    Current value (from the default) = false
2205      From //ui/webui/webui_features.gni:9
2206
2207    Optimize parts of Chrome's UI written with web technologies (HTML/CSS/JS)
2208    for runtime performance purposes. This does more work at compile time for
2209    speed benefits at runtime (so we skip in debug builds).
2210
2211ozone_auto_platforms
2212    Current value (from the default) = false
2213      From //ui/ozone/ozone.gni:14
2214
2215    Select platforms automatically. Turn this off for manual control.
2216
2217ozone_extra_path
2218    Current value (from the default) = "//ui/ozone/ozone_extra.gni"
2219      From //ui/ozone/ozone.gni:11
2220
2221    Ozone extra platforms file path. Can be overridden to build out of
2222    tree ozone platforms.
2223
2224ozone_platform
2225    Current value (from the default) = ""
2226      From //ui/ozone/ozone.gni:20
2227
2228    The platform that will used at runtime by default. This can be overridden
2229    with the command line flag --ozone-platform=<platform>.
2230
2231ozone_platform_cast
2232    Current value (from the default) = false
2233      From //ui/ozone/ozone.gni:23
2234
2235    Compile the 'cast' platform.
2236
2237ozone_platform_gbm
2238    Current value (from the default) = false
2239      From //ui/ozone/ozone.gni:26
2240
2241    Compile the 'gbm' platform.
2242
2243ozone_platform_headless
2244    Current value (from the default) = false
2245      From //ui/ozone/ozone.gni:29
2246
2247    Compile the 'headless' platform.
2248
2249ozone_platform_scenic
2250    Current value (from the default) = false
2251      From //ui/ozone/ozone.gni:32
2252
2253    Compile the 'scenic' platform.
2254
2255ozone_platform_wayland
2256    Current value (from the default) = false
2257      From //ui/ozone/ozone.gni:38
2258
2259    Compile the 'wayland' platform.
2260
2261ozone_platform_windows
2262    Current value (from the default) = false
2263      From //ui/ozone/ozone.gni:41
2264
2265    Compile the 'windows' platform.
2266
2267ozone_platform_x11
2268    Current value (from the default) = false
2269      From //ui/ozone/ozone.gni:35
2270
2271    Compile the 'x11' platform.
2272
2273pdf_bundle_freetype
2274    Current value (from the default) = false
2275      From //third_party/pdfium/pdfium.gni:16
2276
2277    Build PDFium either:
2278    1) When set to true, with a bundled FreeType, built from FreeType source
2279       code in //third_party/freetype and PDFium's FreeType configs in
2280       third_party/freetype/include.
2281    2) When set to false, use whatever FreeType target is defined in
2282       //build/config/freetype.
2283
2284pdf_enable_click_logging
2285    Current value (from the default) = false
2286      From //third_party/pdfium/pdfium.gni:19
2287
2288    Generate logging messages for click events that reach PDFium
2289
2290pdf_enable_v8
2291    Current value (from the default) = true
2292      From //third_party/pdfium/pdfium.gni:22
2293
2294    Build PDFium either with or without v8 support.
2295
2296pdf_enable_xfa
2297    Current value (from the default) = false
2298      From //third_party/pdfium/pdfium.gni:25
2299
2300    Build PDFium either with or without XFA Forms support.
2301
2302pdf_enable_xfa_bmp
2303    Current value (from the default) = true
2304      From //third_party/pdfium/pdfium.gni:28
2305
2306    If XFA, also support bmp codec. Ignored if not XFA.
2307
2308pdf_enable_xfa_gif
2309    Current value (from the default) = true
2310      From //third_party/pdfium/pdfium.gni:31
2311
2312    If XFA, also support gif codec. Ignored if not XFA.
2313
2314pdf_enable_xfa_png
2315    Current value (from the default) = true
2316      From //third_party/pdfium/pdfium.gni:34
2317
2318    If XFA, also support png codec. Ignored if not XFA.
2319
2320pdf_enable_xfa_tiff
2321    Current value (from the default) = true
2322      From //third_party/pdfium/pdfium.gni:37
2323
2324    If XFA, also support png codec. Ignored if not XFA.
2325
2326pdf_is_complete_lib
2327    Current value (from the default) = false
2328      From //third_party/pdfium/pdfium.gni:54
2329
2330    Build a complete static library
2331
2332pdf_is_standalone
2333    Current value (from the default) = false
2334      From //third_party/pdfium/pdfium.gni:51
2335
2336    Build PDFium standalone
2337
2338pdf_use_skia
2339    Current value (from the default) = false
2340      From //third_party/pdfium/pdfium.gni:41
2341
2342    Build PDFium against Skia (experimental) rather than AGG. Use Skia to draw
2343    everything.
2344
2345pdf_use_skia_paths
2346    Current value (from the default) = false
2347      From //third_party/pdfium/pdfium.gni:45
2348
2349    Build PDFium against Skia (experimental) rather than AGG. Use Skia to draw
2350    paths.
2351
2352pdf_use_win32_gdi
2353    Current value (from the default) = true
2354      From //third_party/pdfium/pdfium.gni:48
2355
2356    Build PDFium with or without experimental win32 GDI APIs.
2357
2358perfetto_build_with_android
2359    Current value (from the default) = false
2360      From //third_party/perfetto/gn/perfetto.gni:74
2361
2362    The Android blueprint file generator set this to true (as well as
2363    is_perfetto_build_generator). This is just about being built in the
2364    Android tree (AOSP and internal) and is NOT related with the target OS.
2365    In standalone Android builds and Chromium Android builds, this is false.
2366
2367perfetto_force_dlog
2368    Current value (from the default) = "off"
2369      From //third_party/perfetto/gn/perfetto.gni:194
2370
2371    Whether DLOG should be enabled on debug builds (""), all builds ("on"), or
2372    none ("off"). We disable it by default for embedders to avoid spamming their
2373    console.
2374
2375pgo_build
2376    Current value (from the default) = false
2377      From //chrome/common/features.gni:59
2378
2379    Indicates if the build is using PGO.
2380
2381pgo_data_path
2382    Current value (from the default) = ""
2383      From //build/config/compiler/pgo/pgo.gni:16
2384
2385    When using chrome_pgo_phase = 2, read profile data from this path.
2386
2387pkg_config
2388    Current value (from the default) = ""
2389      From //build/config/linux/pkg_config.gni:33
2390
2391    A pkg-config wrapper to call instead of trying to find and call the right
2392    pkg-config directly. Wrappers like this are common in cross-compilation
2393    environments.
2394    Leaving it blank defaults to searching PATH for 'pkg-config' and relying on
2395    the sysroot mechanism to find the right .pc files.
2396
2397print_unsymbolized_stack_traces
2398    Current value (from the default) = false
2399      From //base/third_party/symbolize/BUILD.gn:13
2400
2401    Stack traces will not include function names. Instead they will contain
2402    file and offset information that can be used with
2403    tools/valgrind/asan/asan_symbolize.py. By piping stderr through this script,
2404    and also enabling symbol_level = 2, you can get much more detailed stack
2405    traces with file names and line numbers, even in non-ASAN builds.
2406
2407proprietary_codecs
2408    Current value (from the default) = false
2409      From //build/config/features.gni:26
2410
2411    Enables proprietary codecs and demuxers; e.g. H264, AAC, MP3, and MP4.
2412    We always build Google Chrome and Chromecast with proprietary codecs.
2413   
2414    Note: this flag is used by WebRTC which is DEPSed into Chrome. Moving it
2415    out of //build will require using the build_overrides directory.
2416
2417report_java_assert
2418    Current value (from the default) = false
2419      From //build/config/android/config.gni:177
2420
2421    Report Java assert failure on Android. Turning it on will report Java
2422    assert failure without crash.
2423
2424ro_segment_workaround_for_valgrind
2425    Current value (from the default) = false
2426      From //build/config/compiler/BUILD.gn:122
2427
2428    Set to true to pass --no-rosegment to lld. This is a workaround
2429    for a KI issue in Valgrind,
2430    https://bugs.kde.org/show_bug.cgi?id=384727
2431
2432root_extra_deps
2433    Current value (from the default) = []
2434      From //BUILD.gn:39
2435
2436    A list of extra dependencies to add to the root target. This allows a
2437    checkout to add additional targets without explicitly changing any checked-
2438    in files.
2439
2440rtc_audio_device_plays_sinus_tone
2441    Current value (from the default) = false
2442      From //third_party/webrtc/webrtc.gni:163
2443
2444    When set to true, replace the audio output with a sinus tone at 440Hz.
2445    The ADM will ask for audio data from WebRTC but instead of reading real
2446    audio samples from NetEQ, a sinus tone will be generated and replace the
2447    real audio samples.
2448
2449rtc_build_examples
2450    Current value (from the default) = true
2451      From //third_party/webrtc/webrtc.gni:103
2452
2453    Set this to false to skip building examples.
2454
2455rtc_build_json
2456    Current value (from the default) = true
2457      From //third_party/webrtc/webrtc.gni:210
2458
2459    Disable these to not build components which can be externally provided.
2460
2461rtc_build_libevent
2462    Current value (from the default) = true
2463      From //third_party/webrtc/webrtc.gni:225
2464
2465rtc_build_libsrtp
2466    Current value (from the default) = true
2467      From //third_party/webrtc/webrtc.gni:211
2468
2469rtc_build_libvpx
2470    Current value (from the default) = true
2471      From //third_party/webrtc/webrtc.gni:212
2472
2473rtc_build_opus
2474    Current value (from the default) = true
2475      From //third_party/webrtc/webrtc.gni:214
2476
2477rtc_build_ssl
2478    Current value (from the default) = true
2479      From //third_party/webrtc/webrtc.gni:215
2480
2481rtc_build_tools
2482    Current value (from the default) = true
2483      From //third_party/webrtc/webrtc.gni:106
2484
2485    Set this to false to skip building tools.
2486
2487rtc_build_usrsctp
2488    Current value (from the default) = true
2489      From //third_party/webrtc/webrtc.gni:216
2490
2491rtc_build_with_neon
2492    Current value (from the default) = false
2493      From //third_party/webrtc/webrtc.gni:140
2494
2495rtc_builtin_ssl_root_certificates
2496    Current value (from the default) = true
2497      From //third_party/webrtc/webrtc.gni:65
2498
2499    Setting this to false will require the API user to pass in their own
2500    SSLCertificateVerifier to verify the certificates presented from a
2501    TLS-TURN server. In return disabling this saves around 100kb in the binary.
2502
2503rtc_enable_android_aaudio
2504    Current value (from the default) = false
2505      From //third_party/webrtc/webrtc.gni:125
2506
2507    Enable use of Android AAudio which requires Android SDK 26 or above and
2508    NDK r16 or above.
2509
2510rtc_enable_bwe_test_logging
2511    Current value (from the default) = false
2512      From //third_party/webrtc/webrtc.gni:100
2513
2514    Set this to true to enable BWE test logging.
2515
2516rtc_enable_external_auth
2517    Current value (from the default) = true
2518      From //third_party/webrtc/webrtc.gni:93
2519
2520    Enable when an external authentication mechanism is used for performing
2521    packet authentication for RTP packets instead of libsrtp.
2522
2523rtc_enable_libevent
2524    Current value (from the default) = true
2525      From //third_party/webrtc/webrtc.gni:224
2526
2527rtc_enable_protobuf
2528    Current value (from the default) = true
2529      From //third_party/webrtc/webrtc.gni:204
2530
2531    Enables the use of protocol buffers for debug recordings.
2532
2533rtc_enable_sctp
2534    Current value (from the default) = true
2535      From //third_party/webrtc/webrtc.gni:207
2536
2537    Set this to disable building with support for SCTP data channels.
2538
2539rtc_enable_symbol_export
2540    Current value (from the default) = false
2541      From //third_party/webrtc/webrtc.gni:41
2542
2543    Setting this to true will make RTC_EXPORT (see rtc_base/system/rtc_export.h)
2544    expand to code that will manage symbols visibility.
2545
2546rtc_exclude_field_trial_default
2547    Current value (from the default) = true
2548      From //third_party/webrtc/webrtc.gni:51
2549
2550    When WebRTC is built as part of Chromium it should exclude the default
2551    implementation of field_trial unless it is building for NACL or
2552    Chromecast.
2553
2554rtc_exclude_metrics_default
2555    Current value (from the default) = true
2556      From //third_party/webrtc/webrtc.gni:60
2557
2558    Setting this to true will define WEBRTC_EXCLUDE_METRICS_DEFAULT which
2559    will tell the pre-processor to remove the default definition of symbols
2560    needed to use metrics. In that case a new implementation needs to be
2561    provided.
2562
2563rtc_include_builtin_audio_codecs
2564    Current value (from the default) = true
2565      From //third_party/webrtc/webrtc.gni:178
2566
2567    When set to false, builtin audio encoder/decoder factories and all the
2568    audio codecs they depend on will not be included in libwebrtc.{a|lib}
2569    (they will still be included in libjingle_peerconnection_so.so and
2570    WebRTC.framework)
2571
2572rtc_include_builtin_video_codecs
2573    Current value (from the default) = true
2574      From //third_party/webrtc/webrtc.gni:184
2575
2576    When set to false, builtin video encoder/decoder factories and all the
2577    video codecs they depends on will not be included in libwebrtc.{a|lib}
2578    (they will still be included in libjingle_peerconnection_so.so and
2579    WebRTC.framework)
2580
2581rtc_include_ilbc
2582    Current value = false
2583      From //.gn:47
2584    Overridden from the default = true
2585      From //third_party/webrtc/webrtc.gni:68
2586
2587    Include the iLBC audio codec?
2588
2589rtc_include_internal_audio_device
2590    Current value (from the default) = false
2591      From //third_party/webrtc/webrtc.gni:237
2592
2593    Chromium uses its own IO handling, so the internal ADM is only built for
2594    standalone WebRTC.
2595
2596rtc_include_opus
2597    Current value (from the default) = true
2598      From //third_party/webrtc/webrtc.gni:71
2599
2600    Disable this to avoid building the Opus audio codec.
2601
2602rtc_include_pulse_audio
2603    Current value (from the default) = false
2604      From //third_party/webrtc/webrtc.gni:233
2605
2606    Excluded in Chromium since its prerequisites don't require Pulse Audio.
2607
2608rtc_include_tests
2609    Current value (from the default) = false
2610      From //third_party/webrtc/webrtc.gni:240
2611
2612    Include tests in standalone checkout.
2613
2614rtc_jsoncpp_root
2615    Current value (from the default) = "//third_party/jsoncpp/source/include"
2616      From //third_party/webrtc/webrtc.gni:82
2617
2618    Used to specify an external Jsoncpp include path when not compiling the
2619    library that comes with WebRTC (i.e. rtc_build_json == 0).
2620
2621rtc_libvpx_build_vp9
2622    Current value (from the default) = true
2623      From //third_party/webrtc/webrtc.gni:213
2624
2625rtc_link_pipewire
2626    Current value (from the default) = false
2627      From //third_party/webrtc/webrtc.gni:118
2628
2629    Set this to link PipeWire directly instead of using the dlopen.
2630
2631rtc_opus_support_120ms_ptime
2632    Current value (from the default) = true
2633      From //third_party/webrtc/webrtc.gni:75
2634
2635    Enable this if the Opus version upon which WebRTC is built supports direct
2636    encoding of 120 ms packets.
2637
2638rtc_opus_variable_complexity
2639    Current value (from the default) = false
2640      From //third_party/webrtc/webrtc.gni:78
2641
2642    Enable this to let the Opus audio codec change complexity on the fly.
2643
2644rtc_prefer_fixed_point
2645    Current value (from the default) = false
2646      From //third_party/webrtc/webrtc.gni:89
2647
2648    Selects fixed-point code where possible.
2649
2650rtc_sanitize_coverage
2651    Current value (from the default) = ""
2652      From //third_party/webrtc/webrtc.gni:132
2653
2654    Set to "func", "block", "edge" for coverage generation.
2655    At unit test runtime set UBSAN_OPTIONS="coverage=1".
2656    It is recommend to set include_examples=0.
2657    Use llvm's sancov -html-report for human readable reports.
2658    See http://clang.llvm.org/docs/SanitizerCoverage.html .
2659
2660rtc_ssl_root
2661    Current value (from the default) = ""
2662      From //third_party/webrtc/webrtc.gni:86
2663
2664    Used to specify an external OpenSSL include path when not compiling the
2665    library that comes with WebRTC (i.e. rtc_build_ssl == 0).
2666
2667rtc_use_dummy_audio_file_devices
2668    Current value (from the default) = false
2669      From //third_party/webrtc/webrtc.gni:157
2670
2671    By default, use normal platform audio support or dummy audio, but don't
2672    use file-based audio playout and record.
2673
2674rtc_use_gtk
2675    Current value (from the default) = false
2676      From //third_party/webrtc/webrtc.gni:230
2677
2678    Build sources requiring GTK. NOTICE: This is not present in Chrome OS
2679    build environments, even if available for Chromium builds.
2680
2681rtc_use_h264
2682    Current value (from the default) = false
2683      From //third_party/webrtc/webrtc.gni:153
2684
2685rtc_use_metal_rendering
2686    Current value (from the default) = false
2687      From //third_party/webrtc/webrtc.gni:172
2688
2689    Determines whether Metal is available on iOS/macOS.
2690
2691rtc_use_pipewire
2692    Current value (from the default) = false
2693      From //third_party/webrtc/webrtc.gni:115
2694
2695    Set this to use PipeWire on the Wayland display server.
2696    By default it's only enabled on desktop Linux (excludes ChromeOS) and
2697    only when using the sysroot as PipeWire is not available in older and
2698    supported Ubuntu and Debian distributions.
2699
2700rtc_use_x11
2701    Current value (from the default) = false
2702      From //third_party/webrtc/webrtc.gni:109
2703
2704    Set this to false to skip building code that requires X11.
2705
2706rtc_use_x11_extensions
2707    Current value (from the default) = false
2708      From //third_party/webrtc/webrtc.gni:244
2709
2710    Set this to false to skip building code that also requires X11 extensions
2711    such as Xdamage, Xfixes.
2712
2713rtc_win_undef_unicode
2714    Current value (from the default) = false
2715      From //third_party/webrtc/webrtc.gni:192
2716
2717    When set to true and in a standalone build, it will undefine UNICODE and
2718    _UNICODE (which are always defined globally by the Chromium Windows
2719    toolchain).
2720    This is only needed for testing purposes, WebRTC wants to be sure it
2721    doesn't assume /DUNICODE and /D_UNICODE but that it explicitly uses
2722    wide character functions.
2723
2724runtime_call_stats_count_everything
2725    Current value (from the default) = false
2726      From //third_party/blink/renderer/platform/BUILD.gn:187
2727
2728safe_browsing_mode
2729    Current value (from the default) = 2
2730      From //components/safe_browsing/buildflags.gni:21
2731
2732sample_profile_is_accurate
2733    Current value (from the default) = true
2734      From //build/config/compiler/compiler.gni:114
2735
2736    Whether we should consider the profile we're using to be accurate. Accurate
2737    profiles have the benefit of (potentially substantial) binary size
2738    reductions, by instructing the compiler to optimize cold and uncovered
2739    functions heavily for size. This often comes at the cost of performance.
2740
2741sanitizer_coverage_flags
2742    Current value (from the default) = ""
2743      From //build/config/sanitizers/sanitizers.gni:106
2744
2745    Value for -fsanitize-coverage flag. Setting this causes
2746    use_sanitizer_coverage to be enabled.
2747    This flag is not used for libFuzzer (use_libfuzzer=true). Instead, we use:
2748        -fsanitize=fuzzer-no-link
2749    Default value when unset and use_fuzzing_engine=true:
2750        trace-pc-guard
2751    Default value when unset and use_sanitizer_coverage=true:
2752        trace-pc-guard,indirect-calls
2753
2754seed_corpus_dir
2755    Current value (from the default) = "//out/full_test/gen/components/viz/service/compositor_frame_fuzzer/binary_seed_corpus"
2756      From //components/viz/service/compositor_frame_fuzzer/BUILD.gn:9
2757
2758skia_whitelist_serialized_typefaces
2759    Current value (from the default) = false
2760      From //skia/BUILD.gn:27
2761
2762strip_absolute_paths_from_debug_symbols
2763    Current value (from the default) = true
2764      From //build/config/compiler/compiler.gni:213
2765
2766strip_debug_info
2767    Current value (from the default) = false
2768      From //build/config/compiler/compiler.gni:44
2769
2770    Android-only: Strip the debug info of libraries within lib.unstripped to
2771    reduce size. As long as symbol_level > 0, this will still allow stacks to be
2772    symbolized.
2773
2774support_webgl2_compute_context
2775    Current value (from the default) = false
2776      From //third_party/blink/renderer/config.gni:42
2777
2778    If true, webgl2-compute context will be supported.
2779
2780symbol_level
2781    Current value (from the default) = -1
2782      From //build/config/compiler/compiler.gni:39
2783
2784    How many symbols to include in the build. This affects the performance of
2785    the build since the symbols are large and dealing with them is slow.
2786      2 means regular build with symbols.
2787      1 means minimal symbols, usually enough for backtraces only. Symbols with
2788    internal linkage (static functions or those in anonymous namespaces) may not
2789    appear when using this level.
2790      0 means no symbols.
2791      -1 means auto-set according to debug/release and platform.
2792
2793sync_user_agent_product
2794    Current value (from the default) = "Chrome"
2795      From //components/sync/driver/BUILD.gn:10
2796
2797    Controls the product part of the user agent calculated in sync_util.cc.
2798
2799system_libdir
2800    Current value (from the default) = "lib"
2801      From //build/config/linux/pkg_config.gni:47
2802
2803    CrOS systemroots place pkgconfig files at <systemroot>/usr/share/pkgconfig
2804    and one of <systemroot>/usr/lib/pkgconfig or <systemroot>/usr/lib64/pkgconfig
2805    depending on whether the systemroot is for a 32 or 64 bit architecture.
2806   
2807    When build under GYP, CrOS board builds specify the 'system_libdir' variable
2808    as part of the GYP_DEFINES provided by the CrOS emerge build or simple
2809    chrome build scheme. This variable permits controlling this for GN builds
2810    in similar fashion by setting the `system_libdir` variable in the build's
2811    args.gn file to 'lib' or 'lib64' as appropriate for the target architecture.
2812
2813system_webview_package_name
2814    Current value (from the default) = "com.android.webview"
2815      From //android_webview/system_webview_apk_tmpl.gni:19
2816
2817    Android package name to use when compiling the system_webview_apk and
2818    trichrome_webview_apk targets. This should be used if the Android build
2819    on which you are going to install WebView is configured to load a
2820    different package name than the default used in AOSP.
2821
2822target_cpu
2823    Current value = "x64"
2824      From //out/full_test/args.gn:2
2825    Overridden from the default = ""
2826      (Internally set; try `gn help target_cpu`.)
2827
2828target_os
2829    Current value = "android"
2830      From //out/full_test/args.gn:1
2831    Overridden from the default = ""
2832      (Internally set; try `gn help target_os`.)
2833
2834target_rpath
2835    Current value (from the default) = ""
2836      From //build/config/chromecast_build.gni:27
2837
2838    If non empty, rpath of executables is set to this.
2839    If empty, default value is used.
2840
2841target_sysroot
2842    Current value (from the default) = ""
2843      From //build/config/sysroot.gni:13
2844
2845    The absolute path of the sysroot that is applied when compiling using
2846    the target toolchain.
2847
2848target_sysroot_dir
2849    Current value (from the default) = "//build/linux"
2850      From //build/config/sysroot.gni:16
2851
2852    The absolute path to directory containing linux sysroot images
2853
2854thin_lto_enable_optimizations
2855    Current value (from the default) = false
2856      From //build/config/compiler/BUILD.gn:136
2857
2858toolkit_views
2859    Current value (from the default) = false
2860      From //build/config/ui.gni:35
2861
2862    True means the UI is built using the "views" framework.
2863
2864treat_warnings_as_errors
2865    Current value (from the default) = true
2866      From //build/config/compiler/BUILD.gn:49
2867
2868    Default to warnings as errors for default workflow, where we catch
2869    warnings with known toolchains. Allow overriding this e.g. for Chromium
2870    builds on Linux that could use a different version of the compiler.
2871    With GCC, warnings in no-Chromium code are always not treated as errors.
2872
2873trial_comparison_cert_verifier_supported
2874    Current value (from the default) = false
2875      From //net/features.gni:41
2876
2877    Platforms where the cert verifier comparison trial is supported.
2878    See https://crbug.com/649026.
2879
2880trichrome_certdigest
2881    Current value (from the default) = "32a2fc74d731105859e5a85df16d95f102d85b22099b8064c5d8915c61dad1e0"
2882      From //chrome/android/trichrome.gni:23
2883
2884    The SHA256 certificate digest for the Trichrome static shared library on
2885    Android. You can use "apksigner verify --print-certs" on the signed APK to
2886    calculate the correct digest.
2887
2888trichrome_library_package
2889    Current value (from the default) = "org.chromium.trichromelibrary"
2890      From //chrome/android/trichrome.gni:18
2891
2892    The package name for the Trichrome static shared library on Android.
2893
2894trichrome_shared_assets
2895    Current value (from the default) = false
2896      From //build/config/android/config.gni:214
2897
2898    Move Trichrome assets to the shared library APK. This will be removed
2899    once P builds are no longer supported. https://crbug.com/943637
2900
2901update_android_aar_prebuilts
2902    Current value (from the default) = false
2903      From //build/config/android/config.gni:196
2904
2905    When true, updates all android_aar_prebuilt() .info files during gn gen.
2906    Refer to android_aar_prebuilt() for more details.
2907
2908use_afl
2909    Current value (from the default) = false
2910      From //build/config/sanitizers/sanitizers.gni:84
2911
2912    Compile for fuzzing with AFL.
2913
2914use_allocator
2915    Current value (from the default) = "none"
2916      From //base/allocator/allocator.gni:30
2917
2918    Memory allocator to use. Set to "none" to use default allocator.
2919
2920use_allocator_shim
2921    Current value (from the default) = true
2922      From //base/allocator/allocator.gni:33
2923
2924    Causes all the allocations to be routed via allocator_shim.cc.
2925
2926use_alsa
2927    Current value (from the default) = false
2928      From //media/media_options.gni:118
2929
2930    Enables runtime selection of ALSA library for audio.
2931
2932use_aura
2933    Current value (from the default) = false
2934      From //build/config/ui.gni:30
2935
2936    Indicates if Aura is enabled. Aura is a low-level windowing library, sort
2937    of a replacement for GDI or GTK.
2938
2939use_base_test_suite
2940    Current value (from the default) = false
2941      From //sandbox/linux/BUILD.gn:20
2942
2943    On Android, use plain GTest.
2944
2945use_call_graph
2946    Current value (from the default) = false
2947      From //build/config/android/abi.gni:28
2948
2949    Only effective if use_order_profiling = true. When this is true the call
2950    graph based instrumentation is used.
2951
2952use_cfi_cast
2953    Current value (from the default) = false
2954      From //build/config/sanitizers/sanitizers.gni:64
2955
2956    Enable checks for bad casts: derived cast and unrelated cast.
2957    TODO(krasin): remove this, when we're ready to add these checks by default.
2958    https://crbug.com/626794
2959
2960use_cfi_diag
2961    Current value (from the default) = false
2962      From //build/config/sanitizers/sanitizers.gni:73
2963
2964    Print detailed diagnostics when Control Flow Integrity detects a violation.
2965
2966use_cfi_icall
2967    Current value (from the default) = false
2968      From //build/config/sanitizers/sanitizers.gni:69
2969
2970    Enable checks for indirect function calls via a function pointer.
2971    TODO(pcc): remove this when we're ready to add these checks by default.
2972    https://crbug.com/701919
2973
2974use_cfi_recover
2975    Current value (from the default) = false
2976      From //build/config/sanitizers/sanitizers.gni:77
2977
2978    Let Control Flow Integrity continue execution instead of crashing when
2979    printing diagnostics (use_cfi_diag = true).
2980
2981use_clang_coverage
2982    Current value (from the default) = false
2983      From //build/config/coverage/coverage.gni:17
2984
2985    Enable Clang's Source-based Code Coverage.
2986
2987use_cras
2988    Current value (from the default) = false
2989      From //media/media_options.gni:61
2990
2991    Override to dynamically link the cras (ChromeOS audio) library.
2992
2993use_crash_key_stubs
2994    Current value (from the default) = false
2995      From //components/crash/core/common/BUILD.gn:10
2996
2997    If set to true, this will stub out and disable the entire crash key system.
2998
2999use_cups
3000    Current value (from the default) = false
3001      From //printing/buildflags/buildflags.gni:23
3002
3003use_custom_libcxx
3004    Current value (from the default) = true
3005      From //build/config/c++/c++.gni:14
3006
3007use_custom_libcxx_for_host
3008    Current value (from the default) = false
3009      From //build/config/c++/c++.gni:25
3010
3011    Use libc++ instead of stdlibc++ when using the host_cpu toolchain, even if
3012    use_custom_libcxx is false. This is useful for cross-compiles where a custom
3013    toolchain for the target_cpu has been set as the default toolchain, but
3014    use_custom_libcxx should still be true when building for the host.  The
3015    expected usage is to set use_custom_libcxx=false and
3016    use_custom_libcxx_for_host=true in the passed in buildargs.
3017
3018use_cxx11
3019    Current value (from the default) = false
3020      From //build/config/compiler/BUILD.gn:92
3021
3022    Allow projects that wish to stay on C++11 to override Chromium's default.
3023
3024use_cxx11_on_android
3025    Current value (from the default) = false
3026      From //build/config/compiler/BUILD.gn:150
3027
3028    C++11 may not be an option if Android test infrastructure is used.
3029
3030use_dawn
3031    Current value (from the default) = false
3032      From //ui/gl/features.gni:17
3033
3034    Should Dawn support be compiled to back the WebGPU implementation.
3035    Also controls linking Dawn depedencies in such as SPIRV-Tools and
3036    SPIRV-Cross
3037
3038use_dbus
3039    Current value (from the default) = false
3040      From //build/config/features.gni:31
3041
3042use_debug_fission
3043    Current value (from the default) = "default"
3044      From //build/config/compiler/compiler.gni:60
3045
3046    use_debug_fission: whether to use split DWARF debug info
3047    files. This can reduce link time significantly, but is incompatible
3048    with some utilities such as icecc and ccache. Requires gold and
3049    gcc >= 4.8 or clang.
3050    http://gcc.gnu.org/wiki/DebugFission
3051   
3052    This is a placeholder value indicating that the code below should set
3053    the default.  This is necessary to delay the evaluation of the default
3054    value expression until after its input values such as use_gold have
3055    been set, e.g. by a toolchain_args() block.
3056
3057use_dummy_lastchange
3058    Current value (from the default) = false
3059      From //build/util/lastchange.gni:9
3060
3061use_egl
3062    Current value (from the default) = true
3063      From //ui/gl/features.gni:12
3064
3065    Should EGL support be compiled. Can be overriden to test during bring up
3066    of EGL support on other platforms
3067
3068use_errorprone_java_compiler
3069    Current value (from the default) = true
3070      From //build/config/android/config.gni:183
3071
3072    Set to false to disable the Errorprone compiler
3073
3074use_evdev_gestures
3075    Current value (from the default) = false
3076      From //ui/events/ozone/BUILD.gn:12
3077
3078    Support ChromeOS touchpad gestures with ozone.
3079
3080use_external_popup_menu
3081    Current value (from the default) = true
3082      From //content/common/features.gni:9
3083
3084    Whether or not to use external popup menu.
3085
3086use_gcm_from_platform
3087    Current value (from the default) = true
3088      From //components/gcm_driver/config.gni:8
3089
3090    Use native GCM driver for all non-Android builds. On Android, the platform
3091    includes GMS which provides the GCM client.
3092
3093use_ghash
3094    Current value (from the default) = true
3095      From //build/config/compiler/BUILD.gn:126
3096
3097    Turn this on to use ghash feature of lld for faster debug link on Windows.
3098    http://blog.llvm.org/2018/01/improving-link-time-on-windows-with.html
3099
3100use_gio
3101    Current value (from the default) = false
3102      From //build/config/features.gni:33
3103
3104use_glib
3105    Current value (from the default) = false
3106      From //build/config/ui.gni:39
3107
3108    Whether we should use glib, a low level C utility library.
3109
3110use_gnome_keyring
3111    Current value (from the default) = false
3112      From //components/os_crypt/features.gni:10
3113
3114    Whether to use libgnome-keyring (deprecated by libsecret).
3115    See http://crbug.com/466975 and http://crbug.com/355223.
3116
3117use_gold
3118    Current value (from the default) = false
3119      From //build/config/compiler/compiler.gni:195
3120
3121use_goma
3122    Current value (from the default) = false
3123      From //build/toolchain/goma.gni:9
3124
3125    Set to true to enable distributed compilation using Goma.
3126
3127use_gtk
3128    Current value (from the default) = false
3129      From //build/config/linux/gtk/gtk.gni:9
3130
3131    Whether or not we should use libgtk.
3132
3133use_hashed_jni_names
3134    Current value (from the default) = false
3135      From //build/config/android/config.gni:237
3136
3137    Use hashed symbol names to reduce JNI symbol overhead.
3138
3139use_icf
3140    Current value (from the default) = false
3141      From //build/config/compiler/BUILD.gn:166
3142
3143    Set to true to use icf, Identical Code Folding.
3144   
3145    icf=all is broken in older golds, see
3146    https://sourceware.org/bugzilla/show_bug.cgi?id=17704
3147    See also https://crbug.com/663886
3148    `linux_use_bundled_binutils` is to avoid breaking Linux distros which may
3149    still have a buggy gold.
3150    chromeos binutils has been patched with the fix, so always use icf there.
3151    The bug only affects x86 and x64, so we can still use ICF when targeting
3152    other architectures.
3153   
3154    lld doesn't have the bug.
3155
3156use_incremental_wpo
3157    Current value (from the default) = false
3158      From //build/config/compiler/compiler.gni:77
3159
3160    Whether or not we should turn on incremental WPO. Only affects the VS
3161    Windows build.
3162
3163use_jacoco_coverage
3164    Current value (from the default) = false
3165      From //build/config/coverage/coverage.gni:20
3166
3167    Enables JaCoCo Java code coverage.
3168
3169use_jumbo_build
3170    Current value (from the default) = false
3171      From //build/config/jumbo.gni:12
3172
3173    If true, use a jumbo build (files compiled together) to speed up
3174    compilation.
3175
3176use_kerberos
3177    Current value (from the default) = true
3178      From //net/features.gni:20
3179
3180    Enable Kerberos authentication. It is disabled by default on iOS, Fuchsia
3181    and Chromecast, at least for now. This feature needs configuration
3182    (krb5.conf and so on).
3183    TODO(fuchsia): Enable kerberos on Fuchsia when it's implemented there.
3184
3185use_libfuzzer
3186    Current value (from the default) = false
3187      From //build/config/sanitizers/sanitizers.gni:81
3188
3189    Compile for fuzzing with LLVM LibFuzzer.
3190    See http://www.chromium.org/developers/testing/libfuzzer
3191
3192use_libjpeg_turbo
3193    Current value (from the default) = true
3194      From //third_party/libjpeg.gni:11
3195
3196    Uses libjpeg_turbo as the jpeg implementation. Has no effect if
3197    use_system_libjpeg is set.
3198
3199use_libpci
3200    Current value (from the default) = false
3201      From //third_party/angle/BUILD.gn:22
3202
3203    Use the PCI lib to collect GPU information on Linux.
3204
3205use_lld
3206    Current value (from the default) = true
3207      From //build/config/compiler/compiler.gni:189
3208
3209    Set to true to use lld, the LLVM linker.
3210
3211use_locally_built_instrumented_libraries
3212    Current value (from the default) = false
3213      From //build/config/sanitizers/sanitizers.gni:52
3214
3215    Use dynamic libraries instrumented by one of the sanitizers instead of the
3216    standard system libraries. Set this flag to build the libraries from source.
3217
3218use_low_quality_image_interpolation
3219    Current value (from the default) = true
3220      From //third_party/blink/renderer/config.gni:36
3221
3222    If true, defaults image interpolation to low quality.
3223
3224use_mpris
3225    Current value (from the default) = false
3226      From //ui/base/mpris/buildflags/buildflags.gni:10
3227
3228    Enables Chromium implementation of the MPRIS D-Bus interface for controlling
3229    media playback. See ../README.md for details.
3230
3231use_official_google_api_keys
3232    Current value (from the default) = ""
3233      From //google_apis/BUILD.gn:31
3234
3235    You can set the variable 'use_official_google_api_keys' to true
3236    to use the Google-internal file containing official API keys
3237    for Google Chrome even in a developer build.  Setting this
3238    variable explicitly to true will cause your build to fail if the
3239    internal file is missing.
3240   
3241    The variable is documented here, but not handled in this file;
3242    see //google_apis/determine_use_official_keys.gypi for the
3243    implementation.
3244   
3245    Set the variable to false to not use the internal file, even when
3246    it exists in your checkout.
3247   
3248    Leave it unset or set to "" to have the variable
3249    implicitly set to true if you have
3250    src/google_apis/internal/google_chrome_api_keys.h in your
3251    checkout, and implicitly set to false if not.
3252   
3253    Note that official builds always behave as if the variable
3254    was explicitly set to true, i.e. they always use official keys,
3255    and will fail to build if the internal file is missing.
3256
3257use_openh264
3258    Current value (from the default) = false
3259      From //third_party/openh264/openh264_args.gni:11
3260
3261    Enable this to build OpenH264 (for encoding, not decoding).
3262    CHECK THE OPENH264 LICENSE/PATENT BEFORE BUILDING, see
3263    http://www.openh264.org/.
3264
3265use_order_profiling
3266    Current value (from the default) = false
3267      From //build/config/android/abi.gni:16
3268
3269    Adds intrumentation to each function. Writes a file with the order that
3270    functions are called at startup.
3271
3272use_ozone
3273    Current value (from the default) = false
3274      From //build/config/ui.gni:26
3275
3276    Indicates if Ozone is enabled. Ozone is a low-level library layer for Linux
3277    that does not require X11. Enabling this feature disables use of glib, x11,
3278    Pango, and Cairo.
3279
3280use_partition_alloc
3281    Current value (from the default) = true
3282      From //build/config/allocator.gni:9
3283
3284    Partition alloc is included by default except iOS.
3285    TODO(thakis): Move this elsewhere, probably
3286    base/allocator/partition_allocator/buildflags.gni
3287
3288use_platform_icu_alternatives
3289    Current value (from the default) = false
3290      From //url/features.gni:10
3291
3292    Enables the use of ICU alternatives in lieu of ICU for the target toolchain.
3293    The flag is used for Cronet to reduce the size of the Cronet binary.
3294
3295use_pulseaudio
3296    Current value (from the default) = false
3297      From //media/media_options.gni:115
3298
3299    Enables runtime selection of PulseAudio library.
3300
3301use_rtti
3302    Current value (from the default) = false
3303      From //build/config/compiler/BUILD.gn:83
3304
3305    Build with C++ RTTI enabled. Chromium builds without RTTI by default,
3306    but some sanitizers are known to require it, like CFI diagnostics
3307    and UBsan variants.
3308
3309use_sanitizer_configs_without_instrumentation
3310    Current value (from the default) = false
3311      From //build/config/sanitizers/sanitizers.gni:114
3312
3313    When enabled, only relevant sanitizer defines are set, but compilation
3314    happens with no extra flags. This is useful when in component build
3315    enabling sanitizers only in some of the components.
3316
3317use_sanitizer_coverage
3318    Current value (from the default) = false
3319      From //build/config/sanitizers/sanitizers.gni:160
3320
3321use_static_angle
3322    Current value (from the default) = false
3323      From //ui/gl/features.gni:8
3324
3325    Whether ANGLE should be linked statically
3326    False by default, enabling currently supported only on Android
3327
3328use_sysroot
3329    Current value (from the default) = true
3330      From //build/config/sysroot.gni:18
3331
3332use_system_freetype
3333    Current value (from the default) = false
3334      From //build/config/freetype/freetype.gni:13
3335
3336    Blink needs a recent and properly build-configured FreeType version to
3337    support OpenType variations, color emoji and avoid security bugs. By default
3338    we ship and link such a version as part of Chrome. For distributions that
3339    prefer to keep linking to the version the system, FreeType must be newer
3340    than version 2.7.1 and have color bitmap support compiled in. WARNING:
3341    System FreeType configurations other than as described WILL INTRODUCE TEXT
3342    RENDERING AND SECURITY REGRESSIONS.
3343
3344use_system_harfbuzz
3345    Current value (from the default) = false
3346      From //third_party/harfbuzz-ng/harfbuzz.gni:11
3347
3348    Blink uses a cutting-edge version of Harfbuzz; most Linux distros do not
3349    contain a new enough version of the code to work correctly. However,
3350    ChromeOS chroots (i.e, real ChromeOS builds for devices) do contain a
3351    new enough version of the library, and so this variable exists so that
3352    ChromeOS can build against the system lib and keep binary sizes smaller.
3353
3354use_system_lcms2
3355    Current value (from the default) = false
3356      From //third_party/pdfium/pdfium.gni:63
3357
3358    Don't build against bundled lcms2.
3359
3360use_system_libjpeg
3361    Current value (from the default) = false
3362      From //third_party/libjpeg.gni:7
3363
3364    Uses system libjpeg. If true, overrides use_libjpeg_turbo.
3365
3366use_system_libopenjpeg2
3367    Current value (from the default) = false
3368      From //third_party/pdfium/pdfium.gni:66
3369
3370    Don't build against bundled libopenjpeg2.
3371
3372use_system_libpng
3373    Current value (from the default) = false
3374      From //third_party/pdfium/pdfium.gni:69
3375
3376    Don't build against bundled libpng.
3377
3378use_system_libsync
3379    Current value (from the default) = false
3380      From //third_party/libsync/BUILD.gn:12
3381
3382    Controls whether the build should use the version of libsync
3383    library shipped with the system. In release builds of Chrome OS we
3384    use the system version, but when building on dev workstations we
3385    bundle it because Ubuntu doesn't ship a usable version.
3386
3387use_system_xcode
3388    Current value (from the default) = ""
3389      From //build_overrides/build.gni:46
3390
3391    Use the system install of Xcode for tools like ibtool, libtool, etc.
3392    This does not affect the compiler. When this variable is false, targets will
3393    instead use a hermetic install of Xcode. [The hermetic install can be
3394    obtained with gclient sync after setting the environment variable
3395    FORCE_MAC_TOOLCHAIN for target_os mac only].
3396
3397use_system_zlib
3398    Current value (from the default) = false
3399      From //third_party/pdfium/pdfium.gni:60
3400
3401    Don't build against bundled zlib.
3402
3403use_tcmalloc_small_but_slow
3404    Current value (from the default) = false
3405      From //base/allocator/BUILD.gn:17
3406
3407    Provide a way to build tcmalloc with a low memory footprint.
3408
3409use_thin_lto
3410    Current value (from the default) = false
3411      From //build/config/compiler/compiler.gni:64
3412
3413    Enables support for ThinLTO, which links 3x-10x faster than full LTO. See
3414    also http://blog.llvm.org/2016/06/thinlto-scalable-and-incremental-lto.html
3415
3416use_udev
3417    Current value (from the default) = false
3418      From //build/config/features.gni:29
3419
3420    libudev usage. This currently only affects the content layer.
3421
3422use_uncompressed_dex
3423    Current value (from the default) = false
3424      From //chrome/android/chrome_public_apk_tmpl.gni:25
3425
3426    Experimental only. Causes .dex files to be store in the APK uncompressed.
3427    Only affects monochrome_public_apk and trichrome_chrome_apk.
3428
3429use_unofficial_version_number
3430    Current value (from the default) = true
3431      From //components/version_info/BUILD.gn:11
3432
3433use_v4l2_codec
3434    Current value (from the default) = false
3435      From //media/gpu/args.gni:11
3436
3437    Indicates if Video4Linux2 codec is used. This is used for all CrOS
3438    platforms which have v4l2 hardware encoder / decoder.
3439
3440use_v4lplugin
3441    Current value (from the default) = false
3442      From //media/gpu/args.gni:7
3443
3444    Indicates if V4L plugin is used.
3445
3446use_v8_context_snapshot
3447    Current value (from the default) = false
3448      From //tools/v8_context_snapshot/v8_context_snapshot.gni:18
3449
3450use_vaapi
3451    Current value (from the default) = false
3452      From //media/gpu/args.gni:15
3453
3454    Indicates if VA-API-based hardware acceleration is to be used. This
3455    is typically the case on x86-based ChromeOS devices.
3456
3457use_viz_devtools
3458    Current value (from the default) = true
3459      From //components/ui_devtools/devtools.gni:8
3460
3461    Indicates if the Viz Devtools server is enabled. This is disabled on iOS,
3462    and on official Android builds to reduce binary size.
3463
3464use_webaudio_ffmpeg
3465    Current value (from the default) = false
3466      From //third_party/blink/renderer/config.gni:39
3467
3468    If true, ffmpeg will be used for computing FFTs for WebAudio
3469
3470use_webaudio_pffft
3471    Current value (from the default) = true
3472      From //third_party/blink/renderer/config.gni:20
3473
3474    If true, use PFFFT for WebAudio FFT support.  This can be used for
3475    any Android architecture and also Linux and Windows.  Do not use for Mac
3476    because the FFT library there is much faster.
3477
3478use_xcode_clang
3479    Current value (from the default) = false
3480      From //build/toolchain/toolchain.gni:23
3481
3482    Compile with Xcode version of clang instead of hermetic version shipped
3483    with the build. Used to be used iOS for official builds, but is now off by
3484    default for all configurations.
3485
3486use_xkbcommon
3487    Current value (from the default) = false
3488      From //ui/base/ui_features.gni:9
3489
3490    Optional system library.
3491
3492using_mismatched_sample_profile
3493    Current value (from the default) = false
3494      From //build/config/compiler/compiler.gni:84
3495
3496    Whether we're using a sample profile collected on an architecture different
3497    than the one we're compiling for.
3498   
3499    It's currently not possible to collect AFDO profiles on anything but
3500    x86{,_64}.
3501
3502v8_android_log_stdout
3503    Current value (from the default) = false
3504      From //v8/BUILD.gn:32
3505
3506    Print to stdout on Android.
3507
3508v8_can_use_fpu_instructions
3509    Current value (from the default) = true
3510      From //v8/BUILD.gn:149
3511
3512    Similar to vfp but on MIPS.
3513
3514v8_check_header_includes
3515    Current value (from the default) = false
3516      From //v8/BUILD.gn:183
3517
3518    Check that each header can be included in isolation (requires also
3519    setting the "check_v8_header_includes" gclient variable to run a
3520    specific hook).
3521
3522v8_check_microtasks_scopes_consistency
3523    Current value = false
3524      From //.gn:39
3525    Overridden from the default = ""
3526      From //v8/BUILD.gn:167
3527
3528    Temporary flag to allow embedders to update their microtasks scopes
3529    while rolling in a new version of V8.
3530
3531v8_code_coverage
3532    Current value (from the default) = false
3533      From //v8/gni/v8.gni:13
3534
3535    Set flags for tracking code coverage. Uses gcov with gcc and sanitizer
3536    coverage with clang.
3537
3538v8_correctness_fuzzer
3539    Current value (from the default) = false
3540      From //v8/gni/v8.gni:16
3541
3542    Includes files needed for correctness fuzzing.
3543
3544v8_current_cpu
3545    Current value (from the default) = "x64"
3546      From //build/config/v8_target_cpu.gni:60
3547
3548    This argument is declared here so that it can be overridden in toolchains.
3549    It should never be explicitly set by the user.
3550
3551v8_custom_deps
3552    Current value (from the default) = ""
3553      From //v8/BUILD.gn:35
3554
3555    Dynamically set an additional dependency from v8/custom_deps.
3556
3557v8_deprecation_warnings
3558    Current value (from the default) = true
3559      From //v8/BUILD.gn:56
3560
3561    Enable compiler warnings when using V8_DEPRECATED apis.
3562
3563v8_disable_write_barriers
3564    Current value (from the default) = false
3565      From //v8/BUILD.gn:194
3566
3567    Disable write barriers when GCs are non-incremental and
3568    heap has single generation.
3569
3570v8_embed_script
3571    Current value (from the default) = ""
3572      From //v8/BUILD.gn:62
3573
3574    Embeds the given script into the snapshot.
3575
3576v8_embedder_string
3577    Current value (from the default) = ""
3578      From //v8/BUILD.gn:65
3579
3580    Allows the embedder to add a custom suffix to the version string.
3581
3582v8_enable_31bit_smis_on_64bit_arch
3583    Current value (from the default) = true
3584      From //v8/BUILD.gn:111
3585
3586v8_enable_backtrace
3587    Current value (from the default) = ""
3588      From //v8/gni/v8.gni:32
3589
3590    Support for backtrace_symbols on linux.
3591
3592v8_enable_concurrent_marking
3593    Current value (from the default) = true
3594      From //v8/BUILD.gn:129
3595
3596    Sets -dV8_CONCURRENT_MARKING
3597
3598v8_enable_debugging_features
3599    Current value (from the default) = true
3600      From //v8/BUILD.gn:39
3601
3602    Turns on all V8 debug features. Enables running V8 in a pseudo debug mode
3603    within a release Chrome.
3604
3605v8_enable_disassembler
3606    Current value (from the default) = ""
3607      From //v8/BUILD.gn:68
3608
3609    Sets -dENABLE_DISASSEMBLER.
3610
3611v8_enable_embedded_builtins
3612    Current value (from the default) = true
3613      From //v8/BUILD.gn:92
3614
3615    Enable embedded builtins.
3616
3617v8_enable_fast_mksnapshot
3618    Current value (from the default) = false
3619      From //v8/BUILD.gn:86
3620
3621    Enable fast mksnapshot runs.
3622
3623v8_enable_fast_torque
3624    Current value (from the default) = ""
3625      From //v8/BUILD.gn:89
3626
3627    Optimize code for Torque executable, even during a debug build.
3628
3629v8_enable_future
3630    Current value (from the default) = false
3631      From //v8/BUILD.gn:42
3632
3633    Sets -DV8_ENABLE_FUTURE.
3634
3635v8_enable_gdbjit
3636    Current value = false
3637      From //.gn:34
3638    Overridden from the default = false
3639      From //v8/BUILD.gn:162
3640
3641v8_enable_handle_zapping
3642    Current value (from the default) = true
3643      From //v8/BUILD.gn:80
3644
3645    Sets -dENABLE_HANDLE_ZAPPING.
3646
3647v8_enable_i18n_support
3648    Current value (from the default) = true
3649      From //v8/gni/v8.gni:56
3650
3651    Enable ECMAScript Internationalization API. Enabling this feature will
3652    add a dependency on the ICU library.
3653
3654v8_enable_lazy_source_positions
3655    Current value (from the default) = true
3656      From //v8/BUILD.gn:190
3657
3658    Enable lazy source positions by default.
3659
3660v8_enable_lite_mode
3661    Current value (from the default) = false
3662      From //v8/BUILD.gn:47
3663
3664    Lite mode disables a number of performance optimizations to reduce memory
3665    at the cost of performance.
3666    Sets --DV8_LITE_MODE.
3667
3668v8_enable_minor_mc
3669    Current value (from the default) = true
3670      From //v8/BUILD.gn:178
3671
3672    Enable minor mark compact.
3673
3674v8_enable_object_print
3675    Current value (from the default) = ""
3676      From //v8/BUILD.gn:114
3677
3678    Sets -dOBJECT_PRINT.
3679
3680v8_enable_pointer_compression
3681    Current value (from the default) = false
3682      From //v8/BUILD.gn:110
3683
3684    Enable pointer compression (sets -dV8_COMPRESS_POINTERS).
3685
3686v8_enable_raw_heap_snapshots
3687    Current value (from the default) = false
3688      From //v8/gni/v8.gni:36
3689
3690    Enables raw heap snapshots containing internals. Used for debugging memory
3691    on platform and embedder level.
3692
3693v8_enable_regexp_interpreter_threaded_dispatch
3694    Current value (from the default) = true
3695      From //v8/BUILD.gn:202
3696
3697    Use token threaded dispatch for the regular expression interpreter.
3698    Use switch-based dispatch if this is false
3699
3700v8_enable_shared_ro_heap
3701    Current value (from the default) = ""
3702      From //v8/BUILD.gn:187
3703
3704    Enable sharing read-only space across isolates.
3705    Sets -DV8_SHARED_RO_HEAP.
3706
3707v8_enable_single_generation
3708    Current value (from the default) = ""
3709      From //v8/BUILD.gn:198
3710
3711    Redirect allocation in young generation so that there will be
3712    only one single generation.
3713
3714v8_enable_slow_dchecks
3715    Current value (from the default) = false
3716      From //v8/BUILD.gn:83
3717
3718    Enable slow dchecks.
3719
3720v8_enable_snapshot_code_comments
3721    Current value (from the default) = false
3722      From //v8/BUILD.gn:98
3723
3724    Enable code comments for builtins in the snapshot (impacts performance).
3725
3726v8_enable_snapshot_native_code_counters
3727    Current value (from the default) = ""
3728      From //v8/BUILD.gn:104
3729
3730    Enable native counters from the snapshot (impacts performance, sets
3731    -dV8_SNAPSHOT_NATIVE_CODE_COUNTERS).
3732    This option will generate extra code in the snapshot to increment counters,
3733    as per the --native-code-counters flag.
3734
3735v8_enable_test_features
3736    Current value (from the default) = ""
3737      From //v8/BUILD.gn:132
3738
3739    Enables various testing features.
3740
3741v8_enable_trace_feedback_updates
3742    Current value (from the default) = false
3743      From //v8/BUILD.gn:126
3744
3745    Sets -dV8_TRACE_FEEDBACK_UPDATES.
3746
3747v8_enable_trace_ignition
3748    Current value (from the default) = false
3749      From //v8/BUILD.gn:123
3750
3751    Sets -dV8_TRACE_IGNITION.
3752
3753v8_enable_trace_maps
3754    Current value (from the default) = ""
3755      From //v8/BUILD.gn:117
3756
3757    Sets -dV8_TRACE_MAPS.
3758
3759v8_enable_v8_checks
3760    Current value (from the default) = ""
3761      From //v8/BUILD.gn:120
3762
3763    Sets -dV8_ENABLE_CHECKS.
3764
3765v8_enable_verify_csa
3766    Current value (from the default) = false
3767      From //v8/BUILD.gn:107
3768
3769    Enable code-generation-time checking of types in the CodeStubAssembler.
3770
3771v8_enable_verify_heap
3772    Current value (from the default) = ""
3773      From //v8/BUILD.gn:50
3774
3775    Sets -DVERIFY_HEAP.
3776
3777v8_enable_verify_predictable
3778    Current value (from the default) = false
3779      From //v8/BUILD.gn:53
3780
3781    Sets -DVERIFY_PREDICTABLE
3782
3783v8_enable_vtunejit
3784    Current value (from the default) = false
3785      From //v8/BUILD.gn:77
3786
3787    Sets -dENABLE_VTUNE_JIT_INTERFACE.
3788
3789v8_expose_symbols
3790    Current value (from the default) = false
3791      From //v8/gni/v8.gni:65
3792
3793    Expose symbols for dynamic linking.
3794
3795v8_extra_library_files
3796    Current value = []
3797      From //.gn:32
3798    Overridden from the default = []
3799      From //v8/BUILD.gn:159
3800
3801    List of extra files to snapshot. They will be snapshotted in order so
3802    if files export symbols used by later files, they should go first.
3803
3804v8_gcmole
3805    Current value (from the default) = false
3806      From //v8/gni/v8.gni:26
3807
3808    Indicate if gcmole was fetched as a hook to make it available on swarming.
3809
3810v8_has_valgrind
3811    Current value (from the default) = false
3812      From //v8/gni/v8.gni:23
3813
3814    Indicate if valgrind was fetched as a custom deps to make it available on
3815    swarming.
3816
3817v8_imminent_deprecation_warnings
3818    Current value = false
3819      From //.gn:35
3820    Overridden from the default = true
3821      From //v8/BUILD.gn:59
3822
3823    Enable compiler warnings when using V8_DEPRECATE_SOON apis.
3824
3825v8_monolithic
3826    Current value (from the default) = false
3827      From //v8/gni/v8.gni:62
3828
3829    Enable monolithic static library for embedders.
3830
3831v8_multi_arch_build
3832    Current value (from the default) = false
3833      From //v8/gni/v8.gni:19
3834
3835    Adds additional compile target for building multiple architectures at once.
3836
3837v8_no_inline
3838    Current value (from the default) = false
3839      From //v8/BUILD.gn:143
3840
3841    Switches off inlining in V8.
3842
3843v8_optimized_debug
3844    Current value (from the default) = true
3845      From //v8/gni/v8.gni:29
3846
3847    Turns on compiler optimizations in V8 in Debug build.
3848
3849v8_os_page_size
3850    Current value (from the default) = "0"
3851      From //v8/BUILD.gn:146
3852
3853    Override OS page size when generating snapshot
3854
3855v8_postmortem_support
3856    Current value (from the default) = false
3857      From //v8/BUILD.gn:137
3858
3859    With post mortem support enabled, metadata is embedded into libv8 that
3860    describes various parameters of the VM for use by debuggers. See
3861    tools/gen-postmortem-metadata.py for details.
3862
3863v8_promise_internal_field_count
3864    Current value (from the default) = 0
3865      From //v8/BUILD.gn:71
3866
3867    Sets the number of internal fields on promise objects.
3868
3869v8_snapshot_toolchain
3870    Current value (from the default) = ""
3871      From //v8/gni/snapshot_toolchain.gni:34
3872
3873    The v8 snapshot needs to be built by code that is compiled with a
3874    toolchain that matches the bit-width of the target CPU, but runs on
3875    the host.
3876
3877v8_static_library
3878    Current value (from the default) = false
3879      From //v8/gni/v8.gni:59
3880
3881    Use static libraries instead of source_sets.
3882
3883v8_target_cpu
3884    Current value (from the default) = ""
3885      From //build/config/v8_target_cpu.gni:33
3886
3887    This arg is used when we want to tell the JIT-generating v8 code
3888    that we want to have it generate for an architecture that is different
3889    than the architecture that v8 will actually run on; we then run the
3890    code under an emulator. For example, we might run v8 on x86, but
3891    generate arm code and run that under emulation.
3892   
3893    This arg is defined here rather than in the v8 project because we want
3894    some of the common architecture-specific args (like arm_float_abi or
3895    mips_arch_variant) to be set to their defaults either if the current_cpu
3896    applies *or* if the v8_current_cpu applies.
3897   
3898    As described below, you can also specify the v8_target_cpu to use
3899    indirectly by specifying a `custom_toolchain` that contains v8_$cpu in the
3900    name after the normal toolchain.
3901   
3902    For example, `gn gen --args="custom_toolchain=...:clang_x64_v8_arm64"`
3903    is equivalent to setting --args=`v8_target_cpu="arm64"`. Setting
3904    `custom_toolchain` is more verbose but makes the toolchain that is
3905    (effectively) being used explicit.
3906   
3907    v8_target_cpu can only be used to target one architecture in a build,
3908    so if you wish to build multiple copies of v8 that are targeting
3909    different architectures, you will need to do something more
3910    complicated involving multiple toolchains along the lines of
3911    custom_toolchain, above.
3912
3913v8_typed_array_max_size_in_heap
3914    Current value (from the default) = 64
3915      From //v8/BUILD.gn:155
3916
3917    Controls the threshold for on-heap/off-heap Typed Arrays.
3918
3919v8_untrusted_code_mitigations
3920    Current value (from the default) = true
3921      From //v8/BUILD.gn:175
3922
3923v8_use_external_startup_data
3924    Current value (from the default) = ""
3925      From //v8/gni/v8.gni:52
3926
3927    Use external files for startup data blobs:
3928    the JS builtins sources and the start snapshot.
3929
3930v8_use_mips_abi_hardfloat
3931    Current value (from the default) = true
3932      From //v8/BUILD.gn:152
3933
3934    Similar to the ARM hard float ABI but on MIPS.
3935
3936v8_use_multi_snapshots
3937    Current value (from the default) = false
3938      From //v8/gni/v8.gni:48
3939
3940    Enable several snapshots side-by-side (e.g. default and for trusted code).
3941
3942v8_use_perfetto
3943    Current value (from the default) = false
3944      From //v8/gni/v8.gni:69
3945
3946    Use Perfetto (https://perfetto.dev) as the default TracingController. Not
3947    currently implemented.
3948
3949v8_use_siphash
3950    Current value (from the default) = false
3951      From //v8/BUILD.gn:140
3952
3953    Use Siphash as added protection against hash flooding attacks.
3954
3955v8_use_snapshot
3956    Current value (from the default) = true
3957      From //v8/gni/v8.gni:44
3958
3959    Enable the snapshot feature, for fast context creation.
3960    https://v8.dev/blog/custom-startup-snapshots
3961    TODO(thakis): Make snapshots work in 64-bit win/cross builds,
3962    https://803591
3963    On Mac hosts, 32-bit builds targeting Windows can't use snapshots, see
3964    https://crbug.com/794838
3965
3966v8_win64_unwinding_info
3967    Current value (from the default) = true
3968      From //v8/BUILD.gn:95
3969
3970    Enable the registration of unwinding info for Windows x64 and ARM64.
3971
3972weblayer_shell_major_version
3973    Current value (from the default) = "99"
3974      From //weblayer/shell/BUILD.gn:20
3975
3976weblayer_shell_product_name
3977    Current value (from the default) = "WebLayer Shell"
3978      From //weblayer/shell/BUILD.gn:18
3979
3980weblayer_shell_version
3981    Current value (from the default) = "99.77.34.5"
3982      From //weblayer/shell/BUILD.gn:19
3983
3984win_console_app
3985    Current value (from the default) = false
3986      From //build/config/win/console_app.gni:12
3987
3988    If true, builds as a console app (rather than a windowed app), which allows
3989    logging to be printed to the user. This will cause a terminal window to pop
3990    up when the executable is not run from the command line, so should only be
3991    used for development. Only has an effect on Windows builds.
3992
3993x64_arch
3994    Current value (from the default) = ""
3995      From //build/config/x64.gni:16
3996
3997    The micro architecture of x64 cpu. This will be a string like "haswell" or
3998    "skylake". An empty string means to use the default architecture which is
3999    "x86-64".
4000    CPU options for "x86-64" in GCC can be found at
4001    https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html
4002    CPU options for "x86-64" in llvm can be found at
4003    https://github.com/llvm/llvm-project/blob/master/llvm/include/llvm/Support/X86TargetParser.def