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chromium / chromium / src / 73e1736a7833267fac90dfd4b1a82b6cfec513fd / . / .gn
blob: 628071cb9a46419307ba0a0b72a3fb137817a596 [file] [log] [blame]
brettw2bafab42014-11-27 18:36:17[diff] [blame]1# This file is used by the GN meta build system to find the root of the source
2# tree and to set startup options. For documentation on the values set in this
3# file, run "gn help dotfile" at the command line.
bauerb@chromium.org96ea63d2013-07-30 10:17:07[diff] [blame]4
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]5import("//build/dotfile_settings.gni")
Jamie Madill7ec071b2018-02-06 20:16:38[diff] [blame]6import("//third_party/angle/dotfile_settings.gni")
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]7
bauerb@chromium.org96ea63d2013-07-30 10:17:07[diff] [blame]8# The location of the build configuration file.
9buildconfig = "//build/config/BUILDCONFIG.gn"
10
Dirk Prankea2d3c362021-04-13 21:39:42[diff] [blame]11# The python interpreter to use by default. On Windows, this will look
12# for python3.exe and python3.bat.
13script_executable = "python3"
14
brettw04a0e482017-01-25 21:29:59[diff] [blame]15# These arguments override the default values for items in a declare_args
16# block. "gn args" in turn can override these.
17#
18# In general the value for a build arg in the declare_args block should be the
19# default. In some cases, a DEPS-ed in project will want different defaults for
20# being built as part of Chrome vs. being built standalone. In this case, the
21# Chrome defaults should go here. There should be no overrides here for
22# values declared in the main Chrome repository.
brettwd8a46d92017-02-08 06:03:45[diff] [blame]23#
24# Important note for defining defaults: This file is executed before the
25# BUILDCONFIG.gn file. That file sets up the global variables like "is_ios".
26# This means that the default_args can not depend on the platform,
27# architecture, or other build parameters. If you really need that, the other
28# repo should define a flag that toggles on a behavior that implements the
29# additional logic required by Chrome to set the variables.
brettw04a0e482017-01-25 21:29:59[diff] [blame]30default_args = {
Sylvain Defresne994145512017-06-06 11:27:02[diff] [blame]31 # TODO(brettw) bug 684096: Chrome on iOS does not build v8, so "gn gen" prints
32 # a warning that "Build argument has no effect". When adding a v8 variable, it
33 # also needs to be defined to src/ios/BUILD.gn (respectively removed from both
34 # location when it is removed).
35
brettw04a0e482017-01-25 21:29:59[diff] [blame]36 v8_enable_gdbjit = false
37 v8_imminent_deprecation_warnings = false
Jochen Eisinger8be7d37b2017-06-02 08:37:56[diff] [blame]38
Niels Möller0a5db002017-10-17 13:22:16[diff] [blame]39 # Don't include webrtc's builtin task queue implementation.
40 rtc_link_task_queue_impl = false
Karl Wibergf3b599b2017-11-05 21:35:00[diff] [blame]41
42 # Don't include the iLBC audio codec.
43 # TODO(bugs.webrtc.org/8396): Once WebRTC gets rid of its internal
44 # deps on codecs, we can remove this.
45 rtc_include_ilbc = false
Robert Sesek9c29eaa2017-12-11 19:47:13[diff] [blame]46
47 # Changes some setup for the Crashpad build to set them to build against
48 # Chromium's zlib, base, etc.
Scott Grahamec25b512017-12-20 05:40:40[diff] [blame]49 crashpad_dependencies = "chromium"
Jamie Madill178f84e2020-12-18 00:47:58[diff] [blame]50
51 # Override ANGLE's Vulkan dependencies.
52 angle_vulkan_headers_dir = "//third_party/vulkan-deps/vulkan-headers/src"
53 angle_vulkan_loader_dir = "//third_party/vulkan-deps/vulkan-loader/src"
54 angle_vulkan_tools_dir = "//third_party/vulkan-deps/vulkan-tools/src"
55 angle_vulkan_validation_layers_dir =
56 "//third_party/vulkan-deps/vulkan-validation-layers/src"
Alex Rudenko5e0e1bc2021-09-03 10:14:17[diff] [blame]57
Chong Guf8e1de132021-11-18 15:32:40[diff] [blame]58 # Overwrite default args declared in the Fuchsia sdk
Chong Gu0bac5a52021-10-07 18:53:18[diff] [blame]59 fuchsia_sdk_readelf_exec =
60 "//third_party/llvm-build/Release+Asserts/bin/llvm-readelf"
61
Alex Rudenko5e0e1bc2021-09-03 10:14:17[diff] [blame]62 devtools_visibility = [ "*" ]
brettw04a0e482017-01-25 21:29:59[diff] [blame]63}
64
Erik Staab8a1acf42020-07-08 19:16:45[diff] [blame]65# These are the targets to skip header checking by default. The files in targets
66# matching these patterns (see "gn help label_pattern" for format) will not have
brettw2bafab42014-11-27 18:36:17[diff] [blame]67# their includes checked for proper dependencies when you run either
68# "gn check" or "gn gen --check".
Erik Staab8a1acf42020-07-08 19:16:45[diff] [blame]69no_check_targets = [
Dan Elphick54b4f7b2021-05-04 14:31:40[diff] [blame]70 # //v8, https://crbug.com/v8/7330
71 "//v8/src/inspector:inspector", # 20 errors
Feng Yu65edebf2022-08-24 16:59:10[diff] [blame]72 "//v8/test/cctest:cctest_sources", # 15 errors
73 "//v8/test/unittests:inspector_unittests_sources", # 2 errors
Dan Elphick54b4f7b2021-05-04 14:31:40[diff] [blame]74 "//v8:cppgc_base", # 1 error
75 "//v8:v8_internal_headers", # 11 errors
76 "//v8:v8_libplatform", # 2 errors
brettwe75311d2015-02-17 23:56:46[diff] [blame]77]
brettwed99f7b2015-04-07 00:22:50[diff] [blame]78
79# These are the list of GN files that run exec_script. This whitelist exists
80# to force additional review for new uses of exec_script, which is strongly
brettwd385ecf2016-04-19 22:53:23[diff] [blame]81# discouraged.
82#
brettwd385ecf2016-04-19 22:53:23[diff] [blame]83# PLEASE READ
84#
85# You should almost never need to add new exec_script calls. exec_script is
86# slow, especially on Windows, and can cause confusing effects. Although
87# individually each call isn't slow or necessarily very confusing, at the scale
88# of our repo things get out of hand quickly. By strongly pushing back on all
89# additions, we keep the build fast and clean. If you think you need to add a
90# new call, please consider:
91#
Wei-Yin Chen (陳威尹)fec2ace2018-08-10 23:31:24[diff] [blame]92# - Do not use a script to check for the existence of a file or directory to
brettwd385ecf2016-04-19 22:53:23[diff] [blame]93# enable a different mode. Instead, use GN build args to enable or disable
94# functionality and set options. An example is checking for a file in the
95# src-internal repo to see if the corresponding src-internal feature should
96# be enabled. There are several things that can go wrong with this:
97#
98# - It's mysterious what causes some things to happen. Although in many cases
99# such behavior can be conveniently automatic, GN optimizes for explicit
100# and obvious behavior so people can more easily diagnose problems.
101#
102# - The user can't enable a mode for one build and not another. With GN build
103# args, the user can choose the exact configuration of multiple builds
104# using one checkout. But implicitly basing flags on the state of the
105# checkout, this functionality is broken.
106#
107# - It's easy to get stale files. If for example the user edits the gclient
108# to stop checking out src-internal (or any other optional thing), it's
109# easy to end up with stale files still mysteriously triggering build
110# conditions that are no longer appropriate (yes, this happens in real
111# life).
112#
113# - Do not use a script to iterate files in a directory (glob):
114#
115# - This has the same "stale file" problem as the above discussion. Various
116# operations can leave untracked files in the source tree which can cause
117# surprising effects.
118#
119# - It becomes impossible to use "git grep" to find where a certain file is
120# referenced. This operation is very common and people really do get
121# confused when things aren't listed.
122#
123# - It's easy to screw up. One common case is a build-time script that packs
124# up a directory. The author notices that the script isn't re-run when the
125# directory is updated, so adds a glob so all the files are listed as
126# inputs. This seems to work great... until a file is deleted. When a
thakis3e861de2016-06-14 14:24:01[diff] [blame]127# file is deleted, all the inputs the glob lists will still be up to date
brettwd385ecf2016-04-19 22:53:23[diff] [blame]128# and no command-lines will have been changed. The action will not be
129# re-run and the build will be broken. It is possible to get this correct
130# using glob, and it's possible to mess it up without glob, but globs make
131# this situation much easier to create. if the build always lists the
132# files and passes them to a script, it will always be correct.
dgn470951712015-04-07 10:37:47[diff] [blame]133
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]134exec_script_whitelist =
Jamie Madill7ec071b2018-02-06 20:16:38[diff] [blame]135 build_dotfile_settings.exec_script_whitelist +
136 angle_dotfile_settings.exec_script_whitelist +
137 [
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]138 # Whitelist entries for //build should go into
139 # //build/dotfile_settings.gni instead, so that they can be shared
140 # with other repos. The entries in this list should be only for files
141 # in the Chromium repo outside of //build.
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]142 "//build_overrides/build.gni",
dgn470951712015-04-07 10:37:47[diff] [blame]143
Peter Kotwiczf4f4cd62019-06-11 19:57:38[diff] [blame]144 "//chrome/android/webapk/shell_apk/prepare_upload_dir/BUILD.gn",
Andrew Grieve19a00ca2022-07-29 19:01:48[diff] [blame]145 "//chrome/version.gni",
Peter Kotwiczf4f4cd62019-06-11 19:57:38[diff] [blame]146
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]147 # TODO(dgn): Layer violation but breaks the build otherwise, see
148 # https://crbug.com/474506.
149 "//clank/java/BUILD.gn",
150 "//clank/native/BUILD.gn",
brettw46134cb2016-09-02 23:53:18[diff] [blame]151
Nico Weber097f64c2018-10-23 17:48:02[diff] [blame]152 "//google_apis/BUILD.gn",
153 "//printing/BUILD.gn",
154
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]155 "//remoting/host/installer/linux/BUILD.gn",
156 "//remoting/remoting_version.gni",
157 "//remoting/host/installer/win/generate_clsids.gni",
brettwde7b2652016-09-09 23:25:05[diff] [blame]158
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]159 "//tools/grit/grit_rule.gni",
Andrew Grieve11c825d72020-01-03 00:51:33[diff] [blame]160 "//tools/gritsettings/BUILD.gn",
dpranke1cfa5312016-11-22 03:07:47[diff] [blame]161 ]