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webrtc / src / 16fe3f290a524a136f71660a114d0b03ef501f10 / . / webrtc.gni
blob: 71c830e2bca15032b6e477b7ce1ab97f9e7f091b [file] [log] [blame]
# Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
import("//build/config/arm.gni")
import("//build/config/features.gni")
import("//build/config/mips.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build/config/ui.gni")
import("//build_overrides/build.gni")
if (!build_with_chromium && is_component_build) {
print("The Gn argument `is_component_build` is currently " +
"ignored for WebRTC builds.")
print("Component builds are supported by Chromium and the argument " +
"`is_component_build` makes it possible to create shared libraries " +
"instead of static libraries.")
print("If an app depends on WebRTC it makes sense to just depend on the " +
"WebRTC static library, so there is no difference between " +
"`is_component_build=true` and `is_component_build=false`.")
print(
"More info about component builds at: " + "https://chromium.googlesource.com/chromium/src/+/master/docs/component_build.md")
assert(!is_component_build, "Component builds are not supported in WebRTC.")
}
if (is_ios) {
import("//build/config/ios/rules.gni")
}
if (is_mac) {
import("//build/config/mac/rules.gni")
}
declare_args() {
# Setting this to true will define WEBRTC_EXCLUDE_FIELD_TRIAL_DEFAULT which
# will tell the pre-processor to remove the default definition of symbols
# needed to use field_trial. In that case a new implementation needs to be
# provided.
if (build_with_chromium) {
# When WebRTC is built as part of Chromium it should exclude the default
# implementation of field_trial unless it is building for NACL or
# Chromecast.
rtc_exclude_field_trial_default = !is_nacl && !is_chromecast
} else {
rtc_exclude_field_trial_default = false
}
# Setting this to true will define WEBRTC_EXCLUDE_METRICS_DEFAULT which
# will tell the pre-processor to remove the default definition of symbols
# needed to use metrics. In that case a new implementation needs to be
# provided.
rtc_exclude_metrics_default = build_with_chromium
# Setting this to false will require the API user to pass in their own
# SSLCertificateVerifier to verify the certificates presented from a
# TLS-TURN server. In return disabling this saves around 100kb in the binary.
rtc_builtin_ssl_root_certificates = true
# Include the iLBC audio codec?
rtc_include_ilbc = true
# Disable this to avoid building the Opus audio codec.
rtc_include_opus = true
# Enable this if the Opus version upon which WebRTC is built supports direct
# encoding of 120 ms packets.
rtc_opus_support_120ms_ptime = true
# Enable this to let the Opus audio codec change complexity on the fly.
rtc_opus_variable_complexity = false
# Used to specify an external Jsoncpp include path when not compiling the
# library that comes with WebRTC (i.e. rtc_build_json == 0).
rtc_jsoncpp_root = "//third_party/jsoncpp/source/include"
# Used to specify an external OpenSSL include path when not compiling the
# library that comes with WebRTC (i.e. rtc_build_ssl == 0).
rtc_ssl_root = ""
# Selects fixed-point code where possible.
rtc_prefer_fixed_point = false
# Enable when an external authentication mechanism is used for performing
# packet authentication for RTP packets instead of libsrtp.
rtc_enable_external_auth = build_with_chromium
# Selects whether debug dumps for the audio processing module
# should be generated.
apm_debug_dump = false
# Set this to true to enable BWE test logging.
rtc_enable_bwe_test_logging = false
# Set this to false to skip building examples.
rtc_build_examples = true
# Set this to false to skip building tools.
rtc_build_tools = true
# Set this to false to skip building code that requires X11.
rtc_use_x11 = use_x11
# Enable to use the Mozilla internal settings.
build_with_mozilla = false
# Enable use of Android AAudio which requires Android SDK 26 or above and
# NDK r16 or above.
rtc_enable_android_aaudio = false
# TODO(henrika): can this flag be removed?
rtc_enable_android_opensl = false
# Link-Time Optimizations.
# Executes code generation at link-time instead of compile-time.
# https://gcc.gnu.org/wiki/LinkTimeOptimization
rtc_use_lto = false
# Set to "func", "block", "edge" for coverage generation.
# At unit test runtime set UBSAN_OPTIONS="coverage=1".
# It is recommend to set include_examples=0.
# Use llvm's sancov -html-report for human readable reports.
# See http://clang.llvm.org/docs/SanitizerCoverage.html .
rtc_sanitize_coverage = ""
# Links a default implementation of task queues to targets
# that depend on the target rtc_task_queue. Set to false to
# use an external implementation.
rtc_link_task_queue_impl = true
if (current_cpu == "arm" || current_cpu == "arm64") {
rtc_prefer_fixed_point = true
}
# Determines whether NEON code will be built.
rtc_build_with_neon =
(current_cpu == "arm" && arm_use_neon) || current_cpu == "arm64"
# Enable this to build OpenH264 encoder/FFmpeg decoder. This is supported on
# all platforms except Android and iOS. Because FFmpeg can be built
# with/without H.264 support, |ffmpeg_branding| has to separately be set to a
# value that includes H.264, for example "Chrome". If FFmpeg is built without
# H.264, compilation succeeds but |H264DecoderImpl| fails to initialize.
# CHECK THE OPENH264, FFMPEG AND H.264 LICENSES/PATENTS BEFORE BUILDING.
# http://www.openh264.org, https://www.ffmpeg.org/
rtc_use_h264 = proprietary_codecs && !is_android && !is_ios
# By default, use normal platform audio support or dummy audio, but don't
# use file-based audio playout and record.
rtc_use_dummy_audio_file_devices = false
# When set to true, replace the audio output with a sinus tone at 440Hz.
# The ADM will ask for audio data from WebRTC but instead of reading real
# audio samples from NetEQ, a sinus tone will be generated and replace the
# real audio samples.
rtc_audio_device_plays_sinus_tone = false
# Disable this to build without support for built-in software codecs.
rtc_use_builtin_sw_codecs = true
if (is_ios) {
# Build broadcast extension in AppRTCMobile for iOS. This results in the
# binary only running on iOS 11+, which is why it is disabled by default.
rtc_apprtcmobile_broadcast_extension = false
}
# Determines whether Metal is available on iOS/macOS.
rtc_use_metal_rendering = is_mac || (is_ios && current_cpu == "arm64")
}
if (!build_with_mozilla) {
import("//testing/test.gni")
}
# A second declare_args block, so that declarations within it can
# depend on the possibly overridden variables in the first
# declare_args block.
declare_args() {
# Enables the use of protocol buffers for debug recordings.
rtc_enable_protobuf = !build_with_mozilla
# Set this to disable building with support for SCTP data channels.
rtc_enable_sctp = !build_with_mozilla
# Disable these to not build components which can be externally provided.
rtc_build_json = !build_with_mozilla
rtc_build_libsrtp = !build_with_mozilla
rtc_build_libvpx = !build_with_mozilla
rtc_libvpx_build_vp9 = !build_with_mozilla
rtc_build_opus = !build_with_mozilla
rtc_build_ssl = !build_with_mozilla
rtc_build_usrsctp = !build_with_mozilla
# Enable libevent task queues on platforms that support it.
# rtc_link_task_queue_impl must be set to true for this to
# have an effect.
if (is_win || is_mac || is_ios || is_nacl || is_fuchsia) {
rtc_enable_libevent = false
rtc_build_libevent = false
} else {
rtc_enable_libevent = true
rtc_build_libevent = !build_with_mozilla
}
# Build sources requiring GTK. NOTICE: This is not present in Chrome OS
# build environments, even if available for Chromium builds.
rtc_use_gtk = !build_with_chromium && !build_with_mozilla
# Excluded in Chromium since its prerequisites don't require Pulse Audio.
rtc_include_pulse_audio = !build_with_chromium
# Chromium uses its own IO handling, so the internal ADM is only built for
# standalone WebRTC.
rtc_include_internal_audio_device = !build_with_chromium
# Include tests in standalone checkout.
rtc_include_tests = !build_with_chromium && !build_with_mozilla
}
# Make it possible to provide custom locations for some libraries (move these
# up into declare_args should we need to actually use them for the GN build).
rtc_libvpx_dir = "//third_party/libvpx"
rtc_opus_dir = "//third_party/opus"
# Desktop capturer is supported only on Windows, OSX and Linux.
rtc_desktop_capture_supported = is_win || is_mac || (is_linux && rtc_use_x11)
###############################################################################
# Templates
#
# Points to // in webrtc stand-alone or to //third_party/webrtc/ in
# chromium.
# We need absolute paths for all configs in templates as they are shared in
# different subdirectories.
webrtc_root = get_path_info(".", "abspath")
# Global configuration that should be applied to all WebRTC targets.
# You normally shouldn't need to include this in your target as it's
# automatically included when using the rtc_* templates.
# It sets defines, include paths and compilation warnings accordingly,
# both for WebRTC stand-alone builds and for the scenario when WebRTC
# native code is built as part of Chromium.
rtc_common_configs = [
webrtc_root + ":common_config",
"//build/config/compiler:no_size_t_to_int_warning",
]
if (is_mac || is_ios) {
rtc_common_configs += [ "//build/config/compiler:enable_arc" ]
}
# Global public configuration that should be applied to all WebRTC targets. You
# normally shouldn't need to include this in your target as it's automatically
# included when using the rtc_* templates. It set the defines, include paths and
# compilation warnings that should be propagated to dependents of the targets
# depending on the target having this config.
rtc_common_inherited_config = webrtc_root + ":common_inherited_config"
# Common configs to remove or add in all rtc targets.
rtc_remove_configs = []
rtc_add_configs = rtc_common_configs
rtc_prod_configs = [ webrtc_root + ":rtc_prod_config" ]
rtc_library_impl_config = [ webrtc_root + ":library_impl_config" ]
set_defaults("rtc_test") {
configs = rtc_add_configs
suppressed_configs = []
}
set_defaults("rtc_source_set") {
configs = rtc_add_configs
suppressed_configs = []
}
set_defaults("rtc_executable") {
configs = rtc_add_configs
suppressed_configs = []
}
set_defaults("rtc_static_library") {
configs = rtc_add_configs
suppressed_configs = []
}
set_defaults("rtc_shared_library") {
configs = rtc_add_configs
suppressed_configs = []
}
webrtc_default_visibility = [ webrtc_root + "/*" ]
if (build_with_chromium) {
# Allow Chromium's WebRTC overrides targets to bypass the regular
# visibility restrictions.
webrtc_default_visibility += [ webrtc_root + "/../webrtc_overrides/*" ]
}
# ---- Poisons ----
#
# The general idea is that some targets declare that they contain some
# kind of poison, which makes it impossible for other targets to
# depend on them (even transitively) unless they declare themselves
# immune to that particular type of poison.
#
# Targets that *contain* poison of type foo should contain the line
#
# poisonous = [ "foo" ]
#
# and targets that *are immune but arent't themselves poisonous*
# should contain
#
# allow_poison = [ "foo" ]
#
# This useful in cases where we have some large target or set of
# targets and want to ensure that most other targets do not
# transitively depend on them. For example, almost no high-level
# target should depend on the audio codecs, since we want WebRTC users
# to be able to inject any subset of them and actually end up with a
# binary that doesn't include the codecs they didn't inject.
#
# Test-only targets (`testonly` set to true) and non-public targets
# (`visibility` not containing "*") are automatically immune to all
# types of poison.
#
# Here's the complete list of all types of poison. It must be kept in
# 1:1 correspondence with the set of //:poison_* targets.
#
all_poison_types = [
# Encoders and decoders for specific audio codecs such as Opus and iSAC.
"audio_codecs",
# Software video codecs (VP8 and VP9 through libvpx).
"software_video_codecs",
]
absl_include_config = "//third_party/abseil-cpp:absl_include_config"
absl_define_config = "//third_party/abseil-cpp:absl_define_config"
template("rtc_test") {
test(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
# Always override to public because when target_os is Android the `test`
# template can override it to [ "*" ] and we want to avoid conditional
# visibility.
visibility = [ "*" ]
configs += invoker.configs
configs -= rtc_remove_configs
configs -= invoker.suppressed_configs
public_configs = [
rtc_common_inherited_config,
absl_include_config,
absl_define_config,
]
if (defined(invoker.public_configs)) {
public_configs += invoker.public_configs
}
if (!build_with_chromium && is_android) {
android_manifest = webrtc_root + "test/android/AndroidManifest.xml"
deps += [ webrtc_root + "test:native_test_java" ]
}
}
}
template("rtc_source_set") {
source_set(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
forward_variables_from(invoker, [ "visibility" ])
if (!defined(visibility)) {
visibility = webrtc_default_visibility
}
# What's your poison?
if (defined(testonly) && testonly) {
assert(!defined(poisonous))
assert(!defined(allow_poison))
} else {
if (!defined(poisonous)) {
poisonous = []
}
if (!defined(allow_poison)) {
allow_poison = []
}
if (!defined(assert_no_deps)) {
assert_no_deps = []
}
if (!defined(deps)) {
deps = []
}
foreach(p, poisonous) {
deps += [ webrtc_root + ":poison_" + p ]
}
foreach(poison_type, all_poison_types) {
allow_dep = true
foreach(v, visibility) {
if (v == "*") {
allow_dep = false
}
}
foreach(p, allow_poison + poisonous) {
if (p == poison_type) {
allow_dep = true
}
}
if (!allow_dep) {
assert_no_deps += [ webrtc_root + ":poison_" + poison_type ]
}
}
}
if (!defined(testonly) || !testonly) {
configs += rtc_prod_configs
}
configs += invoker.configs
configs += rtc_library_impl_config
configs -= rtc_remove_configs
configs -= invoker.suppressed_configs
public_configs = [
rtc_common_inherited_config,
absl_include_config,
absl_define_config,
]
if (defined(invoker.public_configs)) {
public_configs += invoker.public_configs
}
}
}
template("rtc_executable") {
executable(target_name) {
forward_variables_from(invoker,
"*",
[
"deps",
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
forward_variables_from(invoker, [ "visibility" ])
if (!defined(visibility)) {
visibility = webrtc_default_visibility
}
configs += invoker.configs
configs -= rtc_remove_configs
configs -= invoker.suppressed_configs
deps = invoker.deps
public_configs = [
rtc_common_inherited_config,
absl_include_config,
absl_define_config,
]
if (defined(invoker.public_configs)) {
public_configs += invoker.public_configs
}
if (is_win) {
deps += [
# Give executables the default manifest on Windows (a no-op elsewhere).
"//build/win:default_exe_manifest",
]
}
}
}
template("rtc_static_library") {
static_library(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
forward_variables_from(invoker, [ "visibility" ])
if (!defined(visibility)) {
visibility = webrtc_default_visibility
}
# What's your poison?
if (defined(testonly) && testonly) {
assert(!defined(poisonous))
assert(!defined(allow_poison))
} else {
if (!defined(poisonous)) {
poisonous = []
}
if (!defined(allow_poison)) {
allow_poison = []
}
if (!defined(assert_no_deps)) {
assert_no_deps = []
}
if (!defined(deps)) {
deps = []
}
foreach(p, poisonous) {
deps += [ webrtc_root + ":poison_" + p ]
}
foreach(poison_type, all_poison_types) {
allow_dep = true
foreach(v, visibility) {
if (v == "*") {
allow_dep = false
}
}
foreach(p, allow_poison + poisonous) {
if (p == poison_type) {
allow_dep = true
}
}
if (!allow_dep) {
assert_no_deps += [ webrtc_root + ":poison_" + poison_type ]
}
}
}
if (!defined(testonly) || !testonly) {
configs += rtc_prod_configs
}
configs += invoker.configs
configs += rtc_library_impl_config
configs -= rtc_remove_configs
configs -= invoker.suppressed_configs
public_configs = [
rtc_common_inherited_config,
absl_include_config,
absl_define_config,
]
if (defined(invoker.public_configs)) {
public_configs += invoker.public_configs
}
}
}
template("rtc_shared_library") {
shared_library(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
forward_variables_from(invoker, [ "visibility" ])
if (!defined(visibility)) {
visibility = webrtc_default_visibility
}
# What's your poison?
if (defined(testonly) && testonly) {
assert(!defined(poisonous))
assert(!defined(allow_poison))
} else {
if (!defined(poisonous)) {
poisonous = []
}
if (!defined(allow_poison)) {
allow_poison = []
}
if (!defined(assert_no_deps)) {
assert_no_deps = []
}
if (!defined(deps)) {
deps = []
}
foreach(p, poisonous) {
deps += [ webrtc_root + ":poison_" + p ]
}
foreach(poison_type, all_poison_types) {
allow_dep = true
foreach(v, visibility) {
if (v == "*") {
allow_dep = false
}
}
foreach(p, allow_poison + poisonous) {
if (p == poison_type) {
allow_dep = true
}
}
if (!allow_dep) {
assert_no_deps += [ webrtc_root + ":poison_" + poison_type ]
}
}
}
configs += invoker.configs
configs -= rtc_remove_configs
configs -= invoker.suppressed_configs
public_configs = [
rtc_common_inherited_config,
absl_include_config,
absl_define_config,
]
if (defined(invoker.public_configs)) {
public_configs += invoker.public_configs
}
}
}
if (is_ios) {
set_defaults("rtc_ios_xctest_test") {
configs = rtc_add_configs
suppressed_configs = []
}
template("rtc_ios_xctest_test") {
ios_xctest_test(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
forward_variables_from(invoker, [ "visibility" ])
if (!defined(visibility)) {
visibility = webrtc_default_visibility
}
configs += invoker.configs
configs -= rtc_remove_configs
configs -= invoker.suppressed_configs
public_configs = [ rtc_common_inherited_config ]
if (defined(invoker.public_configs)) {
public_configs += invoker.public_configs
}
}
}
# TODO: Generate module.modulemap file to enable use in Swift
# projects. See "mac_framework_bundle_with_umbrella_header".
template("ios_framework_bundle_with_umbrella_header") {
forward_variables_from(invoker, [ "output_name" ])
umbrella_header_path =
"$target_gen_dir/$output_name.framework/Headers/$output_name.h"
ios_framework_bundle(target_name) {
forward_variables_from(invoker, "*", [])
deps += [ ":copy_umbrella_header_$target_name" ]
}
action("umbrella_header_$target_name") {
forward_variables_from(invoker, [ "public_headers" ])
script = "//tools_webrtc/ios/generate_umbrella_header.py"
outputs = [
umbrella_header_path,
]
args = [
"--out",
rebase_path(umbrella_header_path, root_build_dir),
"--sources",
] + public_headers
}
copy("copy_umbrella_header_$target_name") {
sources = [
umbrella_header_path,
]
outputs = [
"$root_out_dir/$output_name.framework/Headers/$output_name.h",
]
deps = [
":umbrella_header_$target_name",
]
}
}
set_defaults("ios_framework_bundle_with_umbrella_header") {
configs = default_shared_library_configs
}
}
if (is_mac) {
template("mac_framework_bundle_with_umbrella_header") {
forward_variables_from(invoker, [ "output_name" ])
this_target_name = target_name
umbrella_header_path = "$target_gen_dir/umbrella_header/$output_name.h"
modulemap_path = "$target_gen_dir/Modules/module.modulemap"
mac_framework_bundle(target_name) {
forward_variables_from(invoker, "*", [])
framework_version = "A"
framework_contents = [
"Headers",
"Modules",
"Resources",
]
ldflags = [
"-all_load",
"-install_name",
"@rpath/$output_name.framework/$output_name",
]
deps += [
":copy_framework_headers_$this_target_name",
":copy_modulemap_$this_target_name",
":copy_umbrella_header_$this_target_name",
":modulemap_$this_target_name",
":umbrella_header_$this_target_name",
]
}
bundle_data("copy_framework_headers_$this_target_name") {
forward_variables_from(invoker, [ "sources" ])
outputs = [
"{{bundle_contents_dir}}/Headers/{{source_file_part}}",
]
}
action("modulemap_$this_target_name") {
script = "//tools_webrtc/ios/generate_modulemap.py"
args = [
"--out",
rebase_path(modulemap_path, root_build_dir),
"--name",
output_name,
]
outputs = [
modulemap_path,
]
}
bundle_data("copy_modulemap_$this_target_name") {
sources = [
modulemap_path,
]
outputs = [
"{{bundle_contents_dir}}/Modules/module.modulemap",
]
deps = [
":modulemap_$this_target_name",
]
}
action("umbrella_header_$this_target_name") {
forward_variables_from(invoker, [ "sources" ])
script = "//tools_webrtc/ios/generate_umbrella_header.py"
outputs = [
umbrella_header_path,
]
args = [
"--out",
rebase_path(umbrella_header_path, root_build_dir),
"--sources",
] + sources
}
bundle_data("copy_umbrella_header_$this_target_name") {
sources = [
umbrella_header_path,
]
outputs = [
"{{bundle_contents_dir}}/Headers/$output_name.h",
]
deps = [
":umbrella_header_$this_target_name",
]
}
}
}
if (is_android) {
template("rtc_android_library") {
android_library(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
javac_args = []
# Treat warnings as errors.
javac_args += [ "-Werror" ]
# TODO(crbug.com/824679): Find out why this fails in Chromium
if (!build_with_chromium) {
javac_args += [
"-Xep:ParameterNotNullable:ERROR",
"-Xep:FieldMissingNullable:ERROR",
"-Xep:ReturnMissingNullable:ERROR",
]
}
# Add any arguments defined by the invoker.
if (defined(invoker.javac_args)) {
javac_args += invoker.javac_args
}
if (!defined(deps)) {
deps = []
}
deps += [ "//third_party/jsr-305:jsr_305_javalib" ]
no_build_hooks = true
}
}
template("rtc_android_apk") {
android_apk(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
# Treat warnings as errors.
javac_args = [ "-Werror" ]
# TODO(crbug.com/824679): Find out why this fails in Chromium
if (!build_with_chromium) {
javac_args += [
"-Xep:ParameterNotNullable:ERROR",
"-Xep:FieldMissingNullable:ERROR",
"-Xep:ReturnMissingNullable:ERROR",
]
}
if (!defined(deps)) {
deps = []
}
deps += [ "//third_party/jsr-305:jsr_305_javalib" ]
no_build_hooks = true
}
}
template("rtc_instrumentation_test_apk") {
instrumentation_test_apk(target_name) {
forward_variables_from(invoker,
"*",
[
"configs",
"public_configs",
"suppressed_configs",
"visibility",
])
# Treat warnings as errors.
javac_args = [ "-Werror" ]
# TODO(crbug.com/824679): Find out why this fails in Chromium
if (!build_with_chromium) {
javac_args += [
"-Xep:ParameterNotNullable:ERROR",
"-Xep:FieldMissingNullable:ERROR",
"-Xep:ReturnMissingNullable:ERROR",
]
}
if (!defined(deps)) {
deps = []
}
deps += [ "//third_party/jsr-305:jsr_305_javalib" ]
no_build_hooks = true
}
}
}