# Copyright 2013 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# HOW TO WRITE CONDITIONALS IN THIS FILE
# ======================================
#
# In many other places, one would write a conditional that expresses all the
# cases when a source file is used or unused, and then either add or subtract
# it from the sources list in that case
#
# Since base includes so many low-level things that vary widely and
# unpredictably for the various build types, we prefer a slightly different
# style. Instead, there are big per-platform blocks of inclusions and
# exclusions. If a given file has an inclusion or exclusion rule that applies
# for multiple conditions, prefer to duplicate it in both lists. This makes it
# a bit easier to see which files apply in which cases rather than having a
# huge sequence of random-looking conditionals.

import("//base/allocator/allocator.gni")
import("//base/allocator/partition_allocator/partition_alloc.gni")
import("//base/debug/debug.gni")
import("//base/trace_event/tracing.gni")
import("//build/buildflag_header.gni")
import("//build/config/arm.gni")
import("//build/config/c++/c++.gni")
import("//build/config/cast.gni")
import("//build/config/compiler/compiler.gni")
import("//build/config/cronet/config.gni")
import("//build/config/dcheck_always_on.gni")
import("//build/config/logging.gni")
import("//build/config/nacl/config.gni")
import("//build/config/profiling/profiling.gni")
import("//build/config/rust.gni")
import("//build/config/sanitizers/sanitizers.gni")
import("//build/config/sysroot.gni")
import("//build/config/ui.gni")
import("//build/timestamp.gni")
import("//build/util/process_version.gni")
import("//build_overrides/build.gni")

if (is_ios) {
  # Used to access target_environment and target_platform.
  import("//build/config/apple/mobile_config.gni")

  # Used to access ios_is_app_extension variable definition.
  import("//build/config/ios/ios_sdk.gni")
}

if (is_mac) {
  # Used to generate fuzzer corpus :base_mach_port_rendezvous_convert_corpus.
  import("//third_party/protobuf/proto_library.gni")
}

if (is_win) {
  import("//build/config/win/control_flow_guard.gni")
}

declare_args() {
  # Unsafe developer build. Has developer-friendly features that may weaken or
  # disable security measures like sandboxing or ASLR.
  # IMPORTANT: Unsafe developer builds should never be distributed to end users.
  is_unsafe_developer_build = !is_official_build

  # Set to true to disable COM init check hooks.
  com_init_check_hook_disabled = false

  # Set to true to enable mutex priority inheritance. See the comments in
  # LockImpl::PriorityInheritanceAvailable() in lock_impl_posix.cc for the
  # platform requirements to safely enable priority inheritance.
  enable_mutex_priority_inheritance = false

  # Control whether the ios stack sampling profiler is enabled. This flag is
  # only supported on iOS 64-bit architecture, but some project build //base
  # for 32-bit architecture.
  ios_stack_profiler_enabled = true
}

# Mutex priority inheritance is disabled by default due to security
# vulnerabilities in older versions of Linux kernel and glibc. However,
# Chromecast builds have full control over the platform and ensure that
# the kernel and glibc versions used have patched the vulnerabilities,
# so it is safe to use mutex priority inheritance on Chromecast platform.
assert(!enable_mutex_priority_inheritance || is_castos || is_cast_android,
       "Do not enable PI mutexes without consulting the security team")

assert(!is_nacl || is_nacl_saigo,
       "base must not be built in most nacl toolchains")

# This is here instead of in //build because //build is DEPS'd in by a few
# subprojects that still support MSVC.
assert(!is_win || is_clang,
       "only clang-cl is supported on Windows, see https://crbug.com/988071")

if (is_android || is_robolectric) {
  import("//build/config/android/rules.gni")
  import("//third_party/jni_zero/jni_zero.gni")
}

if (is_fuchsia) {
  import("//third_party/fuchsia-gn-sdk/src/fidl_library.gni")
}

if (is_win) {
  # This is in a separate config so the flags can be applied to dependents.
  # ldflags in GN aren't automatically inherited.
  config("base_win_linker_flags") {
    ldflags = [
      # Linking with shcore.lib causes the shcore api forwarder dll to load.
      "/DELAYLOAD:api-ms-win-shcore-scaling-l1-1-1.dll",

      # Linking with OneCore.lib causes the next three dlls to load.
      "/DELAYLOAD:api-ms-win-core-realtime-l1-1-1.dll",
      "/DELAYLOAD:api-ms-win-power-base-l1-1-0.dll",
      "/DELAYLOAD:api-ms-win-power-setting-l1-1-0.dll",
      "/DELAYLOAD:cfgmgr32.dll",
      "/DELAYLOAD:powrprof.dll",
      "/DELAYLOAD:setupapi.dll",
      "/DELAYLOAD:shcore.dll",
    ]
  }
}

if (is_android) {
  config("android_system_libs") {
    libs = [
      "android",
      "log",  # Used by logging.cc.
    ]
  }
}

if (is_fuchsia) {
  config("fuchsia_sync_lib") {
    libs = [
      "sync",  # Used by spinning_mutex.h.
    ]
  }
}

buildflag_header("ios_cronet_buildflags") {
  header = "ios_cronet_buildflags.h"
  header_dir = "base/message_loop"
  flags = [ "CRONET_BUILD=$is_cronet_build" ]
}

use_epoll = is_linux || is_chromeos || is_android

# Base and everything it depends on should be a static library rather than
# a source set. Base is more of a "library" in the classic sense in that many
# small parts of it are used in many different contexts. This combined with a
# few static initializers floating around means that dead code stripping
# still leaves a lot of code behind that isn't always used. For example, this
# saves more than 40K for a smaller target like chrome_elf.
#
# Use static libraries for the helper stuff as well for things like
# //base/debug since those targets refer back to base code, which will force
# base compilation units to be linked in where they wouldn't have otherwise.
# This does not include test code (test support and anything in the test
# directory) which should use source_set as is recommended for GN targets).
component("base") {
  sources = [
    "allocator/allocator_check.cc",
    "allocator/allocator_check.h",
    "allocator/dispatcher/configuration.h",
    "allocator/dispatcher/dispatcher.cc",
    "allocator/dispatcher/dispatcher.h",
    "allocator/dispatcher/initializer.h",
    "allocator/dispatcher/internal/dispatch_data.cc",
    "allocator/dispatcher/internal/dispatch_data.h",
    "allocator/dispatcher/internal/dispatcher_internal.h",
    "allocator/dispatcher/internal/tools.h",
    "allocator/dispatcher/notification_data.h",
    "allocator/dispatcher/reentry_guard.cc",
    "allocator/dispatcher/reentry_guard.h",
    "allocator/dispatcher/subsystem.h",
    "allocator/dispatcher/tls.cc",
    "allocator/dispatcher/tls.h",
    "at_exit.cc",
    "at_exit.h",
    "atomic_ref_count.h",
    "atomic_sequence_num.h",
    "atomicops.cc",
    "atomicops.h",
    "atomicops_internals_atomicword_compat.h",
    "atomicops_internals_portable.h",
    "auto_reset.h",
    "barrier_callback.h",
    "barrier_closure.cc",
    "barrier_closure.h",
    "base64.cc",
    "base64.h",
    "base64url.cc",
    "base64url.h",
    "base_switches.h",
    "big_endian.h",
    "bit_cast.h",
    "bits.h",
    "build_time.h",
    "callback_list.cc",
    "callback_list.h",
    "cancelable_callback.h",
    "check.cc",
    "check.h",
    "check_deref.h",
    "check_is_test.cc",
    "check_is_test.h",
    "check_op.cc",
    "check_op.h",
    "command_line.cc",
    "command_line.h",
    "compiler_specific.h",
    "component_export.h",
    "containers/adapters.h",
    "containers/adapters_internal.h",
    "containers/buffer_iterator.h",
    "containers/checked_iterators.h",
    "containers/circular_deque.h",
    "containers/contains.h",
    "containers/enum_set.h",
    "containers/extend.h",
    "containers/fixed_flat_map.h",
    "containers/fixed_flat_set.h",
    "containers/flat_map.h",
    "containers/flat_set.h",
    "containers/flat_tree.h",
    "containers/heap_array.h",
    "containers/id_map.h",
    "containers/intrusive_heap.cc",
    "containers/intrusive_heap.h",
    "containers/linked_list.cc",
    "containers/linked_list.h",
    "containers/lru_cache.h",
    "containers/map_util.h",
    "containers/small_map.h",
    "containers/span.h",
    "containers/span_or_size.h",
    "containers/span_reader.h",
    "containers/span_writer.h",
    "containers/stack.h",
    "containers/to_value_list.h",
    "containers/to_vector.h",
    "containers/unique_ptr_adapters.h",
    "containers/util.h",
    "containers/vector_buffer.h",
    "critical_closure.h",
    "dcheck_is_on.h",
    "debug/alias.cc",
    "debug/alias.h",
    "debug/asan_invalid_access.cc",
    "debug/asan_invalid_access.h",
    "debug/asan_service.cc",
    "debug/asan_service.h",
    "debug/debugger.cc",
    "debug/debugger.h",
    "debug/dump_without_crashing.cc",
    "debug/dump_without_crashing.h",
    "debug/leak_annotations.h",
    "debug/profiler.cc",
    "debug/profiler.h",
    "debug/task_trace.cc",
    "debug/task_trace.h",
    "environment.cc",
    "environment.h",
    "export_template.h",
    "feature_list.cc",
    "feature_list.h",
    "feature_visitor.h",
    "features.cc",
    "features.h",
    "file_version_info.h",
    "files/block_tests_writing_to_special_dirs.cc",
    "files/block_tests_writing_to_special_dirs.h",
    "files/dir_reader_fallback.h",
    "files/file.cc",
    "files/file.h",
    "files/file_error_or.h",
    "files/file_path.cc",
    "files/file_path.h",
    "files/file_tracing.cc",
    "files/file_tracing.h",
    "files/memory_mapped_file.cc",
    "files/memory_mapped_file.h",
    "files/platform_file.h",
    "files/safe_base_name.cc",
    "files/safe_base_name.h",
    "files/scoped_file.cc",
    "files/scoped_file.h",
    "format_macros.h",
    "functional/bind.h",
    "functional/bind_internal.h",
    "functional/callback.h",
    "functional/callback_forward.h",
    "functional/callback_helpers.cc",
    "functional/callback_helpers.h",
    "functional/callback_internal.cc",
    "functional/callback_internal.h",
    "functional/callback_tags.h",
    "functional/concurrent_callbacks.h",
    "functional/concurrent_closures.cc",
    "functional/concurrent_closures.h",
    "functional/disallow_unretained.h",
    "functional/function_ref.h",
    "functional/overloaded.h",
    "functional/unretained_traits.h",
    "gtest_prod_util.h",
    "hash/hash.cc",
    "hash/hash.h",
    "hash/legacy_hash.cc",
    "hash/legacy_hash.h",
    "json/json_common.h",
    "json/json_parser.cc",
    "json/json_parser.h",
    "json/json_reader.cc",
    "json/json_reader.h",
    "json/json_string_value_serializer.cc",
    "json/json_string_value_serializer.h",
    "json/json_value_converter.cc",
    "json/json_value_converter.h",
    "json/json_writer.cc",
    "json/json_writer.h",
    "json/string_escape.cc",
    "json/string_escape.h",
    "json/values_util.cc",
    "json/values_util.h",
    "lazy_instance.h",
    "lazy_instance_helpers.cc",
    "lazy_instance_helpers.h",
    "linux_util.cc",
    "linux_util.h",
    "location.cc",
    "location.h",
    "logging.cc",
    "logging.h",
    "logging/log_severity.h",
    "macros/concat.h",
    "macros/if.h",
    "macros/is_empty.h",
    "macros/remove_parens.h",
    "macros/uniquify.h",
    "memory/aligned_memory.cc",
    "memory/aligned_memory.h",
    "memory/asan_interface.h",
    "memory/free_deleter.h",
    "memory/memory_pressure_listener.cc",
    "memory/memory_pressure_listener.h",
    "memory/memory_pressure_monitor.cc",
    "memory/memory_pressure_monitor.h",
    "memory/page_size.h",
    "memory/platform_shared_memory_handle.cc",
    "memory/platform_shared_memory_handle.h",
    "memory/platform_shared_memory_mapper.h",
    "memory/platform_shared_memory_region.cc",
    "memory/platform_shared_memory_region.h",
    "memory/post_delayed_memory_reduction_task.cc",
    "memory/post_delayed_memory_reduction_task.h",
    "memory/protected_memory.h",
    "memory/ptr_util.h",
    "memory/raw_ptr.h",
    "memory/raw_ptr_asan_bound_arg_tracker.cc",
    "memory/raw_ptr_asan_bound_arg_tracker.h",
    "memory/raw_ptr_asan_hooks.cc",
    "memory/raw_ptr_asan_hooks.h",
    "memory/raw_ptr_asan_service.cc",
    "memory/raw_ptr_asan_service.h",
    "memory/raw_ptr_cast.h",
    "memory/raw_ptr_exclusion.h",
    "memory/raw_ref.h",
    "memory/raw_span.h",
    "memory/read_only_shared_memory_region.cc",
    "memory/read_only_shared_memory_region.h",
    "memory/ref_counted.cc",
    "memory/ref_counted.h",
    "memory/ref_counted_delete_on_sequence.h",
    "memory/ref_counted_memory.cc",
    "memory/ref_counted_memory.h",
    "memory/safe_ref.h",
    "memory/safe_ref_traits.h",
    "memory/safety_checks.h",
    "memory/scoped_policy.h",
    "memory/scoped_refptr.h",
    "memory/shared_memory_hooks.h",
    "memory/shared_memory_mapper.cc",
    "memory/shared_memory_mapper.h",
    "memory/shared_memory_mapping.cc",
    "memory/shared_memory_mapping.h",
    "memory/shared_memory_safety_checker.h",
    "memory/shared_memory_security_policy.cc",
    "memory/shared_memory_security_policy.h",
    "memory/shared_memory_tracker.cc",
    "memory/shared_memory_tracker.h",
    "memory/singleton.h",
    "memory/stack_allocated.h",
    "memory/structured_shared_memory.h",
    "memory/unsafe_shared_memory_pool.cc",
    "memory/unsafe_shared_memory_pool.h",
    "memory/unsafe_shared_memory_region.cc",
    "memory/unsafe_shared_memory_region.h",
    "memory/values_equivalent.h",
    "memory/weak_auto_reset.h",
    "memory/weak_ptr.cc",
    "memory/weak_ptr.h",
    "memory/writable_shared_memory_region.cc",
    "memory/writable_shared_memory_region.h",
    "message_loop/io_watcher.cc",
    "message_loop/io_watcher.h",
    "message_loop/message_pump.cc",
    "message_loop/message_pump.h",
    "message_loop/message_pump_default.cc",
    "message_loop/message_pump_default.h",
    "message_loop/message_pump_for_io.h",
    "message_loop/message_pump_for_ui.h",
    "message_loop/message_pump_type.h",
    "message_loop/work_id_provider.cc",
    "message_loop/work_id_provider.h",
    "metrics/bucket_ranges.cc",
    "metrics/bucket_ranges.h",
    "metrics/crc32.cc",
    "metrics/crc32.h",
    "metrics/dummy_histogram.cc",
    "metrics/dummy_histogram.h",
    "metrics/field_trial.cc",
    "metrics/field_trial.h",
    "metrics/field_trial_list_including_low_anonymity.cc",
    "metrics/field_trial_list_including_low_anonymity.h",
    "metrics/field_trial_param_associator.cc",
    "metrics/field_trial_param_associator.h",
    "metrics/field_trial_params.cc",
    "metrics/field_trial_params.h",
    "metrics/histogram.cc",
    "metrics/histogram.h",
    "metrics/histogram_base.cc",
    "metrics/histogram_base.h",
    "metrics/histogram_delta_serialization.cc",
    "metrics/histogram_delta_serialization.h",
    "metrics/histogram_flattener.h",
    "metrics/histogram_functions.cc",
    "metrics/histogram_functions.h",
    "metrics/histogram_functions_internal_overloads.h",
    "metrics/histogram_macros.h",
    "metrics/histogram_macros_internal.h",
    "metrics/histogram_macros_local.h",
    "metrics/histogram_samples.cc",
    "metrics/histogram_samples.h",
    "metrics/histogram_snapshot_manager.cc",
    "metrics/histogram_snapshot_manager.h",
    "metrics/metrics_hashes.cc",
    "metrics/metrics_hashes.h",
    "metrics/persistent_histogram_allocator.cc",
    "metrics/persistent_histogram_allocator.h",
    "metrics/persistent_memory_allocator.cc",
    "metrics/persistent_memory_allocator.h",
    "metrics/persistent_sample_map.cc",
    "metrics/persistent_sample_map.h",
    "metrics/ranges_manager.cc",
    "metrics/ranges_manager.h",
    "metrics/record_histogram_checker.h",
    "metrics/sample_map.cc",
    "metrics/sample_map.h",
    "metrics/sample_map_iterator.h",
    "metrics/sample_vector.cc",
    "metrics/sample_vector.h",
    "metrics/single_sample_metrics.cc",
    "metrics/single_sample_metrics.h",
    "metrics/sparse_histogram.cc",
    "metrics/sparse_histogram.h",
    "metrics/statistics_recorder.cc",
    "metrics/statistics_recorder.h",
    "metrics/user_metrics.cc",
    "metrics/user_metrics.h",
    "metrics/user_metrics_action.h",
    "no_destructor.h",
    "not_fatal_until.h",
    "notimplemented.h",
    "notreached.h",
    "observer_list.h",
    "observer_list_internal.cc",
    "observer_list_internal.h",
    "observer_list_threadsafe.cc",
    "observer_list_threadsafe.h",
    "observer_list_types.cc",
    "observer_list_types.h",
    "one_shot_event.cc",
    "one_shot_event.h",
    "parameter_pack.h",
    "pending_task.cc",
    "pending_task.h",
    "pickle.cc",
    "pickle.h",
    "power_monitor/battery_level_provider.cc",
    "power_monitor/battery_level_provider.h",
    "power_monitor/battery_state_sampler.cc",
    "power_monitor/battery_state_sampler.h",
    "power_monitor/cpu_frequency_utils.cc",
    "power_monitor/cpu_frequency_utils.h",
    "power_monitor/power_monitor.cc",
    "power_monitor/power_monitor.h",
    "power_monitor/power_monitor_device_source.cc",
    "power_monitor/power_monitor_device_source.h",
    "power_monitor/power_monitor_features.cc",
    "power_monitor/power_monitor_features.h",
    "power_monitor/power_monitor_source.cc",
    "power_monitor/power_monitor_source.h",
    "power_monitor/power_observer.h",
    "power_monitor/sampling_event_source.cc",
    "power_monitor/sampling_event_source.h",
    "power_monitor/timer_sampling_event_source.cc",
    "power_monitor/timer_sampling_event_source.h",
    "process/current_process.cc",
    "process/current_process.h",
    "process/current_process_test.h",
    "process/environment_internal.cc",
    "process/environment_internal.h",
    "process/process.h",
    "process/process_handle.cc",
    "process/process_handle.h",
    "process/process_info.h",
    "process/set_process_title.cc",
    "process/set_process_title.h",
    "profiler/core_unwinders.h",
    "profiler/frame.cc",
    "profiler/frame.h",
    "profiler/metadata_recorder.cc",
    "profiler/metadata_recorder.h",
    "profiler/module_cache.cc",
    "profiler/module_cache.h",
    "profiler/periodic_sampling_scheduler.cc",
    "profiler/periodic_sampling_scheduler.h",
    "profiler/profile_builder.h",
    "profiler/register_context.h",
    "profiler/register_context_registers.h",
    "profiler/sample_metadata.cc",
    "profiler/sample_metadata.h",
    "profiler/sampling_profiler_thread_token.cc",
    "profiler/sampling_profiler_thread_token.h",
    "profiler/stack_buffer.cc",
    "profiler/stack_buffer.h",
    "profiler/stack_copier.cc",
    "profiler/stack_copier.h",
    "profiler/stack_copier_suspend.cc",
    "profiler/stack_copier_suspend.h",
    "profiler/stack_sampler.cc",
    "profiler/stack_sampler.h",
    "profiler/stack_sampling_profiler.cc",
    "profiler/stack_sampling_profiler.h",
    "profiler/stack_unwind_data.cc",
    "profiler/stack_unwind_data.h",
    "profiler/suspendable_thread_delegate.h",
    "profiler/thread_delegate.h",
    "profiler/thread_group_profiler.cc",
    "profiler/thread_group_profiler.h",
    "profiler/thread_group_profiler_client.h",
    "profiler/unwinder.cc",
    "profiler/unwinder.h",
    "rand_util.cc",
    "rand_util.h",
    "run_loop.cc",
    "run_loop.h",
    "sampling_heap_profiler/lock_free_address_hash_set.cc",
    "sampling_heap_profiler/lock_free_address_hash_set.h",
    "sampling_heap_profiler/lock_free_bloom_filter.cc",
    "sampling_heap_profiler/lock_free_bloom_filter.h",
    "sampling_heap_profiler/poisson_allocation_sampler.cc",
    "sampling_heap_profiler/poisson_allocation_sampler.h",
    "sampling_heap_profiler/sampling_heap_profiler.cc",
    "sampling_heap_profiler/sampling_heap_profiler.h",
    "scoped_add_feature_flags.cc",
    "scoped_add_feature_flags.h",
    "scoped_clear_last_error.h",
    "scoped_environment_variable_override.cc",
    "scoped_environment_variable_override.h",
    "scoped_generic.h",
    "scoped_multi_source_observation.h",
    "scoped_observation.h",
    "scoped_observation_traits.h",
    "sequence_checker.cc",
    "sequence_checker.h",
    "sequence_checker_impl.cc",
    "sequence_checker_impl.h",
    "sequence_token.cc",
    "sequence_token.h",
    "state_transitions.h",
    "stl_util.h",
    "strings/abseil_string_number_conversions.cc",
    "strings/abseil_string_number_conversions.h",
    "strings/cstring_view.h",
    "strings/durable_string_view.h",
    "strings/escape.cc",
    "strings/escape.h",
    "strings/latin1_string_conversions.cc",
    "strings/latin1_string_conversions.h",
    "strings/levenshtein_distance.cc",
    "strings/levenshtein_distance.h",
    "strings/pattern.cc",
    "strings/pattern.h",
    "strings/safe_sprintf.cc",
    "strings/safe_sprintf.h",
    "strings/span_printf.h",
    "strings/strcat.cc",
    "strings/strcat.h",
    "strings/strcat_internal.h",
    "strings/string_number_conversions.cc",
    "strings/string_number_conversions.h",
    "strings/string_number_conversions_internal.h",
    "strings/string_slice.h",
    "strings/string_split.cc",
    "strings/string_split.h",
    "strings/string_split_internal.h",
    "strings/string_tokenizer.h",
    "strings/string_util.cc",
    "strings/string_util.h",
    "strings/string_util_constants.cc",
    "strings/string_util_impl_helpers.h",
    "strings/string_util_internal.h",
    "strings/stringize_macros.h",
    "strings/stringprintf.cc",
    "strings/stringprintf.h",
    "strings/sys_string_conversions.h",
    "strings/to_string.h",
    "strings/utf_offset_string_conversions.cc",
    "strings/utf_offset_string_conversions.h",
    "strings/utf_ostream_operators.cc",
    "strings/utf_ostream_operators.h",
    "strings/utf_string_conversion_utils.cc",
    "strings/utf_string_conversion_utils.h",
    "strings/utf_string_conversions.cc",
    "strings/utf_string_conversions.h",
    "substring_set_matcher/matcher_string_pattern.cc",
    "substring_set_matcher/matcher_string_pattern.h",
    "substring_set_matcher/substring_set_matcher.cc",
    "substring_set_matcher/substring_set_matcher.h",
    "supports_user_data.cc",
    "supports_user_data.h",
    "synchronization/atomic_flag.cc",
    "synchronization/atomic_flag.h",
    "synchronization/cancelable_event.cc",
    "synchronization/cancelable_event.h",
    "synchronization/condition_variable.h",
    "synchronization/lock.cc",
    "synchronization/lock.h",
    "synchronization/lock_impl.h",
    "synchronization/lock_subtle.h",
    "synchronization/waitable_event.cc",
    "synchronization/waitable_event.h",
    "synchronization/waitable_event_watcher.h",
    "sys_byteorder.h",
    "syslog_logging.cc",
    "syslog_logging.h",
    "system/system_monitor.cc",
    "system/system_monitor.h",
    "task/bind_post_task.h",
    "task/bind_post_task_internal.h",
    "task/cancelable_task_tracker.cc",
    "task/cancelable_task_tracker.h",
    "task/common/checked_lock.h",
    "task/common/checked_lock_impl.cc",
    "task/common/checked_lock_impl.h",
    "task/common/lazy_now.cc",
    "task/common/lazy_now.h",
    "task/common/operations_controller.cc",
    "task/common/operations_controller.h",
    "task/common/scoped_defer_task_posting.cc",
    "task/common/scoped_defer_task_posting.h",
    "task/common/task_annotator.cc",
    "task/common/task_annotator.h",
    "task/current_thread.cc",
    "task/current_thread.h",
    "task/default_delayed_task_handle_delegate.cc",
    "task/default_delayed_task_handle_delegate.h",
    "task/deferred_sequenced_task_runner.cc",
    "task/deferred_sequenced_task_runner.h",
    "task/delay_policy.h",
    "task/delayed_task_handle.cc",
    "task/delayed_task_handle.h",
    "task/lazy_thread_pool_task_runner.cc",
    "task/lazy_thread_pool_task_runner.h",
    "task/post_job.cc",
    "task/post_job.h",
    "task/post_task_and_reply_with_result_internal.h",
    "task/scoped_set_task_priority_for_current_thread.cc",
    "task/scoped_set_task_priority_for_current_thread.h",
    "task/sequence_manager/associated_thread_id.cc",
    "task/sequence_manager/associated_thread_id.h",
    "task/sequence_manager/atomic_flag_set.cc",
    "task/sequence_manager/atomic_flag_set.h",
    "task/sequence_manager/delayed_task_handle_delegate.cc",
    "task/sequence_manager/delayed_task_handle_delegate.h",
    "task/sequence_manager/enqueue_order.h",
    "task/sequence_manager/enqueue_order_generator.cc",
    "task/sequence_manager/enqueue_order_generator.h",
    "task/sequence_manager/fence.cc",
    "task/sequence_manager/fence.h",
    "task/sequence_manager/sequence_manager.cc",
    "task/sequence_manager/sequence_manager.h",
    "task/sequence_manager/sequence_manager_impl.cc",
    "task/sequence_manager/sequence_manager_impl.h",
    "task/sequence_manager/sequenced_task_source.cc",
    "task/sequence_manager/sequenced_task_source.h",
    "task/sequence_manager/task_order.cc",
    "task/sequence_manager/task_order.h",
    "task/sequence_manager/task_queue.cc",
    "task/sequence_manager/task_queue.h",
    "task/sequence_manager/task_queue_impl.cc",
    "task/sequence_manager/task_queue_impl.h",
    "task/sequence_manager/task_queue_selector.cc",
    "task/sequence_manager/task_queue_selector.h",
    "task/sequence_manager/task_time_observer.cc",
    "task/sequence_manager/task_time_observer.h",
    "task/sequence_manager/tasks.cc",
    "task/sequence_manager/tasks.h",
    "task/sequence_manager/thread_controller.cc",
    "task/sequence_manager/thread_controller.h",
    "task/sequence_manager/thread_controller_impl.cc",
    "task/sequence_manager/thread_controller_impl.h",
    "task/sequence_manager/thread_controller_power_monitor.cc",
    "task/sequence_manager/thread_controller_power_monitor.h",
    "task/sequence_manager/thread_controller_with_message_pump_impl.cc",
    "task/sequence_manager/thread_controller_with_message_pump_impl.h",
    "task/sequence_manager/time_domain.cc",
    "task/sequence_manager/time_domain.h",
    "task/sequence_manager/wake_up_queue.cc",
    "task/sequence_manager/wake_up_queue.h",
    "task/sequence_manager/work_deduplicator.cc",
    "task/sequence_manager/work_deduplicator.h",
    "task/sequence_manager/work_queue.cc",
    "task/sequence_manager/work_queue.h",
    "task/sequence_manager/work_queue_sets.cc",
    "task/sequence_manager/work_queue_sets.h",
    "task/sequence_manager/work_tracker.cc",
    "task/sequence_manager/work_tracker.h",
    "task/sequenced_task_runner.cc",
    "task/sequenced_task_runner.h",
    "task/sequenced_task_runner_helpers.h",
    "task/single_thread_task_executor.cc",
    "task/single_thread_task_executor.h",
    "task/single_thread_task_runner.cc",
    "task/single_thread_task_runner.h",
    "task/single_thread_task_runner_thread_mode.h",
    "task/task_features.cc",
    "task/task_features.h",
    "task/task_observer.h",
    "task/task_runner.cc",
    "task/task_runner.h",
    "task/task_traits.cc",
    "task/task_traits.h",
    "task/thread_pool.cc",
    "task/thread_pool.h",
    "task/thread_pool/delayed_priority_queue.cc",
    "task/thread_pool/delayed_priority_queue.h",
    "task/thread_pool/delayed_task_manager.cc",
    "task/thread_pool/delayed_task_manager.h",
    "task/thread_pool/environment_config.cc",
    "task/thread_pool/environment_config.h",
    "task/thread_pool/job_task_source.cc",
    "task/thread_pool/job_task_source.h",
    "task/thread_pool/pooled_parallel_task_runner.cc",
    "task/thread_pool/pooled_parallel_task_runner.h",
    "task/thread_pool/pooled_sequenced_task_runner.cc",
    "task/thread_pool/pooled_sequenced_task_runner.h",
    "task/thread_pool/pooled_single_thread_task_runner_manager.cc",
    "task/thread_pool/pooled_single_thread_task_runner_manager.h",
    "task/thread_pool/pooled_task_runner_delegate.cc",
    "task/thread_pool/pooled_task_runner_delegate.h",
    "task/thread_pool/priority_queue.cc",
    "task/thread_pool/priority_queue.h",
    "task/thread_pool/sequence.cc",
    "task/thread_pool/sequence.h",
    "task/thread_pool/service_thread.cc",
    "task/thread_pool/service_thread.h",
    "task/thread_pool/task.cc",
    "task/thread_pool/task.h",
    "task/thread_pool/task_source.cc",
    "task/thread_pool/task_source.h",
    "task/thread_pool/task_source_sort_key.cc",
    "task/thread_pool/task_source_sort_key.h",
    "task/thread_pool/task_tracker.cc",
    "task/thread_pool/task_tracker.h",
    "task/thread_pool/thread_group.cc",
    "task/thread_pool/thread_group.h",
    "task/thread_pool/thread_group_impl.cc",
    "task/thread_pool/thread_group_impl.h",
    "task/thread_pool/thread_pool_impl.cc",
    "task/thread_pool/thread_pool_impl.h",
    "task/thread_pool/thread_pool_instance.cc",
    "task/thread_pool/thread_pool_instance.h",
    "task/thread_pool/tracked_ref.h",
    "task/thread_pool/worker_thread.cc",
    "task/thread_pool/worker_thread.h",
    "task/thread_pool/worker_thread_observer.h",
    "task/thread_pool/worker_thread_set.cc",
    "task/thread_pool/worker_thread_set.h",
    "task/updateable_sequenced_task_runner.h",
    "test/scoped_logging_settings.h",
    "test/spin_wait.h",
    "third_party/nspr/prtime.cc",
    "third_party/nspr/prtime.h",
    "thread_annotations.h",
    "threading/hang_watcher.cc",
    "threading/hang_watcher.h",
    "threading/platform_thread.cc",
    "threading/platform_thread.h",
    "threading/platform_thread_ref.cc",
    "threading/platform_thread_ref.h",
    "threading/post_task_and_reply_impl.cc",
    "threading/post_task_and_reply_impl.h",
    "threading/scoped_blocking_call.cc",
    "threading/scoped_blocking_call.h",
    "threading/scoped_blocking_call_internal.cc",
    "threading/scoped_blocking_call_internal.h",
    "threading/scoped_thread_priority.cc",
    "threading/scoped_thread_priority.h",
    "threading/sequence_bound.h",
    "threading/sequence_bound_internal.h",
    "threading/sequence_local_storage_map.cc",
    "threading/sequence_local_storage_map.h",
    "threading/sequence_local_storage_slot.cc",
    "threading/sequence_local_storage_slot.h",
    "threading/simple_thread.cc",
    "threading/simple_thread.h",
    "threading/thread.cc",
    "threading/thread.h",
    "threading/thread_checker.cc",
    "threading/thread_checker.h",
    "threading/thread_checker_impl.cc",
    "threading/thread_checker_impl.h",
    "threading/thread_collision_warner.cc",
    "threading/thread_collision_warner.h",
    "threading/thread_id_name_manager.cc",
    "threading/thread_id_name_manager.h",
    "threading/thread_local.h",
    "threading/thread_local_internal.h",
    "threading/thread_local_storage.cc",
    "threading/thread_local_storage.h",
    "threading/thread_restrictions.cc",
    "threading/thread_restrictions.h",
    "threading/threading_features.h",
    "threading/watchdog.cc",
    "threading/watchdog.h",
    "time/clock.cc",
    "time/clock.h",
    "time/default_clock.cc",
    "time/default_clock.h",
    "time/default_tick_clock.cc",
    "time/default_tick_clock.h",
    "time/tick_clock.cc",
    "time/tick_clock.h",
    "time/time.cc",
    "time/time.h",
    "time/time_delta_from_string.cc",
    "time/time_delta_from_string.h",
    "time/time_override.cc",
    "time/time_override.h",
    "timer/elapsed_timer.cc",
    "timer/elapsed_timer.h",
    "timer/hi_res_timer_manager.h",
    "timer/lap_timer.cc",
    "timer/lap_timer.h",
    "timer/timer.cc",
    "timer/timer.h",
    "timer/wall_clock_timer.cc",
    "timer/wall_clock_timer.h",
    "token.cc",
    "token.h",
    "trace_event/base_tracing.h",
    "trace_event/base_tracing_forward.h",
    "trace_event/common/trace_event_common.h",
    "trace_event/heap_profiler_allocation_context.cc",
    "trace_event/heap_profiler_allocation_context.h",
    "trace_event/heap_profiler_allocation_context_tracker.cc",
    "trace_event/heap_profiler_allocation_context_tracker.h",
    "trace_event/histogram_scope.cc",
    "trace_event/histogram_scope.h",
    "trace_event/memory_allocator_dump_guid.cc",
    "trace_event/memory_allocator_dump_guid.h",
    "trace_event/named_trigger.cc",
    "trace_event/named_trigger.h",
    "trace_event/trace_id_helper.cc",
    "trace_event/trace_id_helper.h",
    "traits_bag.h",
    "tuple.h",
    "types/always_false.h",
    "types/cxx23_from_range.h",
    "types/cxx23_is_scoped_enum.h",
    "types/cxx23_to_underlying.h",
    "types/expected.h",
    "types/expected_internal.h",
    "types/expected_macros.h",
    "types/fixed_array.h",
    "types/id_type.h",
    "types/is_arc_pointer.h",
    "types/is_complete.h",
    "types/is_instantiation.h",
    "types/optional_ref.h",
    "types/optional_util.h",
    "types/pass_key.h",
    "types/same_as_any.h",
    "types/strong_alias.h",
    "types/supports_ostream_operator.h",
    "types/supports_to_string.h",
    "types/to_address.h",
    "types/token_type.h",
    "types/variant_util.h",
    "types/zip.h",
    "unguessable_token.cc",
    "unguessable_token.h",
    "uuid.cc",
    "uuid.h",
    "value_iterators.cc",
    "value_iterators.h",
    "values.cc",
    "values.h",
    "version.cc",
    "version.h",
    "vlog.cc",
    "vlog.h",
  ]

  # Various files that are unused in the Chromium build, but presumably here to
  # make downstream's life easier. They are not included in the main sources
  # list to avoid breaking GN formatting's auto-sorting.
  sources += [
    #"process/process_handle_freebsd.cc",
    #"process/process_iterator_freebsd.cc",
    #"process/process_metrics_freebsd.cc",
    #"system/sys_info_freebsd.cc",
    #"process/process_iterator_openbsd.cc",
    #"process/process_handle_openbsd.cc",
    #"process/process_metrics_openbsd.cc",
    #"system/sys_info_openbsd.cc",
  ]

  if (is_apple || current_os == "freebsd" || current_os == "openbsd") {
    sources += [
      "posix/sysctl.cc",
      "posix/sysctl.h",
    ]
  }

  if (is_posix) {
    sources += [
      "debug/debugger_posix.cc",
      "file_descriptor_posix.cc",
      "file_descriptor_posix.h",
      "files/dir_reader_posix.h",
      "files/file_posix.cc",
      "files/memory_mapped_file_posix.cc",
      "memory/protected_memory_posix.cc",
      "message_loop/watchable_io_message_pump_posix.cc",
      "message_loop/watchable_io_message_pump_posix.h",
      "posix/eintr_wrapper.h",
      "posix/file_descriptor_shuffle.cc",
      "posix/file_descriptor_shuffle.h",
      "posix/global_descriptors.cc",
      "posix/global_descriptors.h",
      "posix/safe_strerror.cc",
      "posix/safe_strerror.h",
      "process/process_handle_posix.cc",
      "strings/string_util_posix.h",
      "synchronization/condition_variable_posix.cc",
      "synchronization/lock_impl_posix.cc",
      "threading/platform_thread_posix.cc",
      "threading/thread_local_storage_posix.cc",
      "time/time_conversion_posix.cc",
      "timer/hi_res_timer_manager_posix.cc",
    ]
  }

  if (is_linux || is_chromeos) {
    sources += [
      "debug/proc_maps_linux.cc",
      "debug/proc_maps_linux.h",
      "files/dir_reader_linux.h",
      "files/scoped_file_linux.cc",
      "process/internal_linux.cc",
      "process/internal_linux.h",
      "process/memory_linux.cc",
      "process/process_handle_linux.cc",
      "process/process_iterator_linux.cc",
      "process/process_linux.cc",
      "process/process_metrics_linux.cc",
      "threading/platform_thread_linux.cc",
      "threading/platform_thread_linux_base.cc",
      "threading/thread_type_delegate.cc",
      "threading/thread_type_delegate.h",
    ]
  }

  if (is_chromeos) {
    sources += [
      "process/process_priority_delegate.h",
      "threading/cross_process_platform_thread_delegate.h",
      "threading/platform_thread_cros.cc",
    ]
  }

  if (is_linux || is_chromeos || is_android) {
    sources += [
      "files/file_path_watcher_inotify.cc",
      "files/file_path_watcher_inotify.h",
    ]
  }

  all_dependent_configs = []
  defines = [ "BASE_IMPLEMENTATION" ]
  data = []
  data_deps = []
  libs = []
  frameworks = []

  configs += [
    "//build/config:precompiled_headers",
    "//build/config/compiler:prevent_unsafe_narrowing",
    "//build/config/compiler:wexit_time_destructors",
    "//build/config/compiler:wglobal_constructors",
  ]

  deps = [
    ":check_version_internal",
    "//base/allocator:buildflags",
    "//base/third_party/cityhash",
    "//base/third_party/cityhash_v103",
    "//base/third_party/double_conversion",
    "//base/third_party/superfasthash",
    "//build:blink_buildflags",
    "//build:branding_buildflags",
    "//build:ios_buildflags",
    "//build/config/compiler:compiler_buildflags",
    "//third_party/modp_b64",
  ]
  if (!is_nacl) {
    # Used by metrics/crc32, except on NaCl builds.
    deps += [ "//third_party/zlib" ]
  }

  # `raw_ptr` cannot be made a component due to CRT symbol issues.
  # Its gateway to being a component is through `//base`, so we have
  # to provide the appropriate `#define` here.
  defines += [ "IS_RAW_PTR_IMPL" ]

  # native_unwinder_android is split into a separate target to avoid pulling
  # libunwindstack dependencies into cronet's base.
  assert_no_deps = [ ":native_unwinder_android" ]

  public_deps = [
    ":anchor_functions_buildflags",
    ":base_static",
    ":build_date",
    ":cfi_buildflags",
    ":clang_profiling_buildflags",
    ":debugging_buildflags",
    ":feature_list_buildflags",
    ":ios_cronet_buildflags",
    ":orderfile_buildflags",
    ":power_monitor_buildflags",
    ":profiler_buildflags",
    ":protected_memory_buildflags",
    ":sanitizer_buildflags",
    ":synchronization_buildflags",
    ":tracing_buildflags",
    "//base/allocator/partition_allocator:buildflags",
    "//base/allocator/partition_allocator:raw_ptr",
    "//base/numerics:base_numerics",
    "//base/third_party/icu",
    "//build:chromecast_buildflags",
    "//third_party/abseil-cpp:absl",
  ]

  # TODO(crbug.com/354842935): Remove this dependency once other modules don't
  # accidentally (transitively) depend on it anymore.
  public_deps += [ "//build:chromeos_buildflags" ]

  # Needed for <atomic> if using newer C++ library than sysroot, except if
  # building inside the cros_sdk environment - use host_toolchain as a
  # more robust check for this.
  if (!use_sysroot && (is_chromeos || (is_linux && !is_castos)) &&
      host_toolchain != "//build/toolchain/cros:host") {
    libs += [ "atomic" ]
  }

  if (use_allocator_shim) {
    if (is_apple) {
      sources += [ "allocator/early_zone_registration_apple.h" ]
    }
  }

  if (use_clang_profiling) {
    # Call-sites use this conditional on the CLANG_PROFILING macro, for clarity.
    sources += [
      "test/clang_profiling.cc",
      "test/clang_profiling.h",
    ]
    if (is_android) {
      sources += [ "test/clang_profiling_android.cc" ]
    }
  }

  # Allow more direct string conversions on platforms with native utf8
  # strings
  if (is_apple || is_chromeos || is_castos || is_cast_android || is_fuchsia) {
    defines += [ "SYSTEM_NATIVE_UTF8" ]
  }

  # Android.
  if (is_android) {
    sources += [
      "android/android_hardware_buffer_compat.h",
      "android/application_status_listener.h",
      "android/application_status_listener_stub.cc",
      "android/build_info.h",
      "android/build_info_stub.cc",
      "android/content_uri_utils.h",
      "android/content_uri_utils_stub.cc",
      "android/library_loader/anchor_functions.h",
      "android/path_utils.h",
      "android/scoped_hardware_buffer_fence_sync.cc",
      "android/scoped_hardware_buffer_fence_sync.h",
      "android/scoped_hardware_buffer_handle.cc",
      "android/scoped_hardware_buffer_handle.h",
      "android/scoped_input_event.cc",
      "android/scoped_input_event.h",
      "debug/stack_trace_android.cc",
      "files/file_util_android.cc",
      "files/scoped_file_android.cc",
      "memory/platform_shared_memory_mapper_android.cc",
      "memory/platform_shared_memory_region_android.cc",
      "message_loop/message_pump_android.cc",
      "message_loop/message_pump_android.h",
      "os_compat_android.cc",
      "os_compat_android.h",
      "process/process_android.cc",
      "profiler/native_unwinder_android_map_delegate.h",
      "profiler/native_unwinder_android_memory_regions_map.h",
      "profiler/stack_sampler_android.cc",
      "system/sys_info_android.cc",
      "threading/platform_thread_android_stub.cc",

      # Android uses some Linux sources.
      "debug/elf_reader.cc",
      "debug/elf_reader.h",
      "debug/proc_maps_linux.cc",
      "debug/proc_maps_linux.h",
      "process/internal_linux.cc",
      "process/internal_linux.h",
      "process/memory_linux.cc",
      "process/process_handle_linux.cc",
      "process/process_iterator_linux.cc",
      "process/process_metrics_linux.cc",
      "system/sys_info_linux.cc",
    ]

    deps += [
      "//third_party/ashmem",
      "//third_party/cpu_features:ndk_compat",
    ]

    # Needs to be a public config so that dependent targets link against it as
    # well when doing a component build.
    public_configs = [ ":android_system_libs" ]

    if (current_cpu == "arm") {
      sources += [
        "profiler/chrome_unwind_info_android_32.cc",
        "profiler/chrome_unwind_info_android_32.h",
        "profiler/chrome_unwinder_android_32.cc",
        "profiler/chrome_unwinder_android_32.h",
      ]
    }

    if (current_cpu == "arm64") {
      sources += [
        "profiler/frame_pointer_unwinder.cc",
        "profiler/frame_pointer_unwinder.h",
      ]
    }

    # This is actually a linker script, but it can be added to the link in the
    # same way as a library.
    libs += [ "android/library_loader/anchor_functions.lds" ]
  }  # is_android

  if (build_allocation_stack_trace_recorder) {
    sources += [
      "debug/allocation_trace.cc",
      "debug/allocation_trace.h",
    ]
  }

  if (is_robolectric) {
    # Make jni.h available.
    configs += [ "//third_party/jdk" ]
  }
  if (is_robolectric) {
    sources += [
      "android/base_jni_onload.cc",
      "android/base_jni_onload.h",
      "android/callback_android.cc",
      "android/callback_android.h",
      "android/command_line_android.cc",
      "android/int_string_callback.cc",
      "android/int_string_callback.h",
      "android/java_exception_reporter.cc",
      "android/java_exception_reporter.h",
      "android/jni_android.cc",
      "android/jni_android.h",
      "android/jni_array.cc",
      "android/jni_array.h",
      "android/jni_bytebuffer.cc",
      "android/jni_bytebuffer.h",
      "android/jni_callback.cc",
      "android/jni_callback.h",
      "android/jni_registrar.cc",
      "android/jni_registrar.h",
      "android/jni_string.cc",
      "android/jni_string.h",
      "android/jni_utils.cc",
      "android/jni_utils.h",
      "android/jni_weak_ref.h",
      "android/library_loader/anchor_functions.cc",
      "android/library_loader/anchor_functions.h",
      "android/library_loader/library_loader_hooks.cc",
      "android/library_loader/library_loader_hooks.h",
      "android/library_loader/library_prefetcher.cc",
      "android/library_loader/library_prefetcher.h",
      "android/library_loader/library_prefetcher_hooks.cc",
      "android/native_uma_recorder.cc",
      "android/scoped_java_ref.h",
      "android/token_android.cc",
      "android/token_android.h",
      "android/trace_event_binding.cc",
      "android/trace_event_binding.h",
      "android/unguessable_token_android.cc",
      "android/unguessable_token_android.h",
    ]
    deps += [ "//build:robolectric_buildflags" ]
  }
  if (is_android || is_robolectric) {
    public_deps += [ "//third_party/jni_zero:jni_zero" ]
  }  # is_android || is_robolectric

  if (is_android && !is_robolectric) {
    # The robolectic toolchain doesn't provide the NDK headers required for data
    # and function type definitions used by BinderApi et al.
    sources += [
      "android/binder.cc",
      "android/binder.h",
      "android/binder_box.cc",
      "android/binder_box.h",
    ]
  }

  # Chromeos.
  if (is_chromeos) {
    sources += [
      "logging_chromeos.cc",
      "system/sys_info_chromeos.cc",
    ]

    sources += [ "power_monitor/power_monitor_device_source_chromeos.cc" ]

    if (current_cpu == "x64" || current_cpu == "arm64") {
      sources += [
        "profiler/frame_pointer_unwinder.cc",
        "profiler/frame_pointer_unwinder.h",
      ]
    }
  }

  # Fuchsia.
  if (is_fuchsia) {
    sources += [
      "base_paths_fuchsia.cc",
      "debug/debugger_fuchsia.cc",
      "debug/elf_reader.cc",
      "debug/elf_reader.h",
      "debug/stack_trace_fuchsia.cc",
      "file_descriptor_posix.cc",
      "file_descriptor_posix.h",
      "files/dir_reader_posix.h",
      "files/file_path_watcher_stub.cc",  # See crbug.com/851641.
      "files/file_posix.cc",
      "files/memory_mapped_file_posix.cc",
      "fuchsia/default_job.cc",
      "fuchsia/default_job.h",
      "fuchsia/fidl_event_handler.h",
      "fuchsia/file_utils.cc",
      "fuchsia/file_utils.h",
      "fuchsia/filtered_service_directory.cc",
      "fuchsia/filtered_service_directory.h",
      "fuchsia/fuchsia_component_connect.h",
      "fuchsia/fuchsia_logging.cc",
      "fuchsia/fuchsia_logging.h",
      "fuchsia/intl_profile_watcher.cc",
      "fuchsia/intl_profile_watcher.h",
      "fuchsia/koid.cc",
      "fuchsia/koid.h",
      "fuchsia/mem_buffer_util.cc",
      "fuchsia/mem_buffer_util.h",
      "fuchsia/process_context.cc",
      "fuchsia/process_context.h",
      "fuchsia/process_lifecycle.cc",
      "fuchsia/process_lifecycle.h",
      "fuchsia/scheduler.h",
      "fuchsia/scoped_fx_logger.cc",
      "fuchsia/scoped_fx_logger.h",
      "fuchsia/scoped_service_binding.h",
      "fuchsia/scoped_service_publisher.h",
      "fuchsia/startup_context.cc",
      "fuchsia/startup_context.h",
      "fuchsia/system_info.cc",
      "fuchsia/system_info.h",
      "memory/platform_shared_memory_mapper_fuchsia.cc",
      "memory/platform_shared_memory_region_fuchsia.cc",
      "memory/protected_memory_posix.cc",
      "message_loop/message_pump_fuchsia.cc",
      "message_loop/message_pump_fuchsia.h",
      "message_loop/watchable_io_message_pump_posix.cc",
      "message_loop/watchable_io_message_pump_posix.h",
      "native_library_fuchsia.cc",
      "posix/eintr_wrapper.h",
      "posix/file_descriptor_shuffle.cc",
      "posix/file_descriptor_shuffle.h",
      "posix/global_descriptors.cc",
      "posix/global_descriptors.h",
      "posix/safe_strerror.cc",
      "posix/safe_strerror.h",
      "process/kill_fuchsia.cc",
      "process/launch_fuchsia.cc",
      "process/memory_fuchsia.cc",
      "process/process_fuchsia.cc",
      "process/process_handle_fuchsia.cc",
      "process/process_iterator_fuchsia.cc",
      "process/process_metrics_fuchsia.cc",
      "profiler/module_cache_posix.cc",
      "rand_util_fuchsia.cc",
      "strings/string_util_posix.h",
      "strings/sys_string_conversions_posix.cc",
      "synchronization/condition_variable_posix.cc",
      "synchronization/lock_impl_posix.cc",
      "synchronization/waitable_event_posix.cc",
      "synchronization/waitable_event_watcher_posix.cc",
      "system/sys_info_fuchsia.cc",
      "threading/platform_thread_fuchsia.cc",
      "threading/platform_thread_posix.cc",
      "threading/thread_local_storage_posix.cc",
      "time/time_conversion_posix.cc",
      "time/time_exploded_icu.cc",
      "time/time_fuchsia.cc",
      "timer/hi_res_timer_manager_posix.cc",
    ]

    # These only need to be public deps because of includes of their headers
    # by public //base headers, which requires they be on the include path.
    # TODO(crbug.com/40575514): Move these back to |deps|.
    public_deps += [
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.component.runner:fuchsia.component.runner_hlcpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.intl:fuchsia.intl_hlcpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.io:fuchsia.io_cpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.io:fuchsia.io_hlcpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.logger:fuchsia.logger_cpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.mem:fuchsia.mem_hlcpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.process.lifecycle:fuchsia.process.lifecycle_cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/async",
      "//third_party/fuchsia-sdk/sdk/pkg/component_incoming_cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/fdio",
      "//third_party/fuchsia-sdk/sdk/pkg/fidl_cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/fidl_cpp_wire",
      "//third_party/fuchsia-sdk/sdk/pkg/sync",
      "//third_party/fuchsia-sdk/sdk/pkg/sys_cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/syslog_structured_backend",
      "//third_party/fuchsia-sdk/sdk/pkg/vfs_cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/zx",
    ]

    deps += [
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.buildinfo:fuchsia.buildinfo_cpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.hwinfo:fuchsia.hwinfo_cpp",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.io:fuchsia.io_cpp_hlcpp_conversion",
      "//third_party/fuchsia-sdk/sdk/fidl/fuchsia.media:fuchsia.media_cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/async-default",
      "//third_party/fuchsia-sdk/sdk/pkg/async-loop-cpp",
      "//third_party/fuchsia-sdk/sdk/pkg/async-loop-default",
      "//third_party/fuchsia-sdk/sdk/pkg/fidl",
      "//third_party/fuchsia-sdk/sdk/pkg/inspect_component_cpp",
      "//third_party/icu",
    ]

    # Needed for users of spinning_mutex.h, which for performance reasons,
    # contains inlined calls to `libsync` inside the header file.
    # It appends an entry to the "libs" section of the dependent target.
    public_configs = [ ":fuchsia_sync_lib" ]
  }

  # Several helpers in //base are backed by BoringSSL; however, NaCl builds
  # cannot easily depend on BoringSSL due to the nacl_io library, so NaCl builds
  # still retain a dedicated local implementation of the functionality.
  #
  # TODO(crbug.com/40511454) Use only boringssl when NaCl is removed.
  sources += [
    "hash/md5.h",
    "hash/md5_constexpr.h",
    "hash/md5_constexpr_internal.h",
    "hash/sha1.h",
  ]
  if (is_nacl) {
    sources += [
      "hash/md5_nacl.cc",
      "hash/md5_nacl.h",
      "hash/sha1_nacl.cc",
      "hash/sha1_nacl.h",
    ]
  } else {
    sources += [
      "hash/md5_boringssl.cc",
      "hash/md5_boringssl.h",
      "hash/sha1_boringssl.cc",
      "hash/sha1_boringssl.h",
    ]
    public_deps += [ "//third_party/boringssl" ]
  }

  # NaCl.
  if (is_nacl) {
    # Explicitly include the linux file.
    sources += [
      "debug/stack_trace_nacl.cc",
      "files/file_path_watcher_stub.cc",
      "memory/page_size_nacl.cc",
      "os_compat_nacl.cc",
      "os_compat_nacl.h",
      "process/process_stubs.cc",
      "rand_util_nacl.cc",
      "sync_socket_nacl.cc",
      "system/sys_info_nacl.cc",
      "threading/platform_thread_linux_base.cc",
      "threading/platform_thread_nacl.cc",
    ]
  } else {
    sources += [
      "base_paths.cc",
      "base_paths.h",
      "cpu.cc",
      "cpu.h",
      "debug/crash_logging.cc",
      "debug/crash_logging.h",
      "debug/stack_trace.cc",
      "debug/stack_trace.h",
      "files/drive_info.cc",
      "files/drive_info.h",
      "files/file_enumerator.cc",
      "files/file_enumerator.h",
      "files/file_proxy.cc",
      "files/file_proxy.h",
      "files/file_util.cc",
      "files/file_util.h",
      "files/important_file_writer.cc",
      "files/important_file_writer.h",
      "files/important_file_writer_cleaner.cc",
      "files/important_file_writer_cleaner.h",
      "files/scoped_temp_dir.cc",
      "files/scoped_temp_dir.h",
      "files/scoped_temp_file.cc",
      "files/scoped_temp_file.h",
      "json/json_file_value_serializer.cc",
      "json/json_file_value_serializer.h",
      "logging/rust_log_integration.cc",
      "logging/rust_log_integration.h",
      "memory/discardable_memory.cc",
      "memory/discardable_memory.h",
      "memory/discardable_memory_allocator.cc",
      "memory/discardable_memory_allocator.h",
      "memory/discardable_memory_internal.h",
      "metrics/persistent_histogram_storage.cc",
      "metrics/persistent_histogram_storage.h",
      "native_library.cc",
      "native_library.h",
      "path_service.cc",
      "path_service.h",
      "process/process_metrics.cc",
      "process/process_metrics.h",
      "scoped_native_library.cc",
      "scoped_native_library.h",
      "system/sys_info.cc",
      "system/sys_info.h",
      "system/sys_info_internal.h",
      "task/thread_pool/initialization_util.cc",
      "task/thread_pool/initialization_util.h",
    ]

    if (is_win) {
      sources += [
        "base_paths_win.cc",
        "base_paths_win.h",
      ]
    }

    if (is_apple) {
      sources += [
        "base_paths_apple.cc",
        "base_paths_apple.h",
      ]
    }

    if (is_mac) {
      sources += [
        "base_paths_mac.h",
        "base_paths_mac.mm",
      ]
    }

    if (is_android) {
      sources += [
        "base_paths_android.cc",
        "base_paths_android.h",
      ]
    }

    if (is_posix) {
      sources += [
        "base_paths_posix.h",
        "memory/madv_free_discardable_memory_allocator_posix.cc",
        "memory/madv_free_discardable_memory_allocator_posix.h",
        "memory/madv_free_discardable_memory_posix.cc",
        "memory/madv_free_discardable_memory_posix.h",
        "posix/unix_domain_socket.cc",
        "posix/unix_domain_socket.h",
        "rand_util_posix.cc",
        "system/sys_info_posix.cc",
      ]
    }

    if (is_posix || is_fuchsia) {
      sources += [
        "files/file_descriptor_watcher_posix.cc",
        "files/file_descriptor_watcher_posix.h",
        "files/file_enumerator_posix.cc",
        "files/file_util_posix.cc",
        "memory/page_size_posix.cc",
      ]

      if (!is_apple) {
        sources += [ "files/drive_info_posix.cc" ]
      }
    }

    if ((is_posix && !is_ios) || is_fuchsia) {
      sources += [
        "process/process_metrics_posix.cc",
        "sync_socket_posix.cc",
      ]
    }

    if (is_posix && !is_apple) {
      sources += [
        "native_library_posix.cc",
        "posix/can_lower_nice_to.cc",
        "posix/can_lower_nice_to.h",
        "process/launch_posix.cc",
        "profiler/module_cache_posix.cc",
        "profiler/stack_base_address_posix.cc",
        "profiler/stack_base_address_posix.h",
        "profiler/stack_copier_signal.cc",
        "profiler/stack_copier_signal.h",
        "profiler/thread_delegate_posix.cc",
        "profiler/thread_delegate_posix.h",
      ]
    }

    if (is_posix && !is_android) {
      sources += [ "debug/stack_trace_posix.cc" ]
    }

    if (is_posix && !is_ios) {
      sources += [ "process/process_posix.cc" ]
    }
    if (!is_win && !is_chromeos && !is_android && !is_linux) {
      sources += [ "synchronization/cancelable_event_default.cc" ]
    }

    if (is_linux || is_chromeos || is_android) {
      sources += [ "synchronization/cancelable_event_posix.cc" ]
    }

    if (use_blink) {
      sources += [
        "memory/discardable_shared_memory.cc",
        "memory/discardable_shared_memory.h",
        "memory/shared_memory_switch.cc",
        "memory/shared_memory_switch.h",
        "metrics/histogram_shared_memory.cc",
        "metrics/histogram_shared_memory.h",
        "process/kill.cc",
        "process/kill.h",
        "process/launch.cc",
        "process/launch.h",
        "process/memory.cc",
        "process/memory.h",
        "process/process_iterator.cc",
        "process/process_iterator.h",
      ]

      if (is_posix) {
        sources += [ "process/kill_posix.cc" ]
      }
    }

    if (is_linux || is_chromeos) {
      sources += [
        "base_paths_posix.cc",
        "debug/elf_reader.cc",
        "debug/elf_reader.h",
        "stack_canary_linux.cc",
        "stack_canary_linux.h",
      ]
    }
    if (use_partition_alloc) {
      # Add stuff that doesn't work in NaCl or other environments that disable
      # partition_alloc.
      sources += [
        "allocator/dispatcher/memory_tagging.cc",
        "allocator/dispatcher/memory_tagging.h",

        # PartitionAlloc uses SpinLock, which doesn't work in NaCl (see below).
        "allocator/miracle_parameter.cc",
        "allocator/miracle_parameter.h",
        "allocator/partition_alloc_features.cc",
        "allocator/partition_alloc_features.h",
        "allocator/partition_alloc_support.cc",
        "allocator/partition_alloc_support.h",
      ]
    }
    if (use_allocator_shim) {
      public_deps += [ "allocator/partition_allocator:allocator_shim" ]
    }
  }

  # Windows.
  if (is_win) {
    sources += [
      "debug/debugger_win.cc",
      "debug/gdi_debug_util_win.cc",
      "debug/gdi_debug_util_win.h",
      "debug/handle_hooks_win.cc",
      "debug/handle_hooks_win.h",
      "debug/invalid_access_win.cc",
      "debug/invalid_access_win.h",
      "debug/stack_trace_win.cc",
      "enterprise_util.cc",
      "enterprise_util.h",
      "enterprise_util_win.cc",
      "file_version_info_win.cc",
      "file_version_info_win.h",
      "files/drive_info_win.cc",
      "files/file_enumerator_win.cc",
      "files/file_path_watcher_win.cc",
      "files/file_util_win.cc",
      "files/file_win.cc",
      "files/memory_mapped_file_win.cc",
      "logging_win.cc",
      "logging_win.h",
      "memory/page_size_win.cc",
      "memory/platform_shared_memory_mapper_win.cc",
      "memory/platform_shared_memory_region_win.cc",
      "memory/protected_memory_win.cc",
      "message_loop/message_pump_win.cc",
      "message_loop/message_pump_win.h",
      "moving_window.h",
      "native_library_win.cc",
      "power_monitor/battery_level_provider_win.cc",
      "power_monitor/power_monitor_device_source_win.cc",
      "power_monitor/speed_limit_observer_win.cc",
      "power_monitor/speed_limit_observer_win.h",
      "process/kill_win.cc",
      "process/launch_win.cc",
      "process/memory_win.cc",
      "process/process_handle_win.cc",
      "process/process_info_win.cc",
      "process/process_iterator_win.cc",
      "process/process_metrics_win.cc",
      "process/process_win.cc",
      "profiler/core_unwinders_win.cc",
      "profiler/module_cache_win.cc",
      "profiler/native_unwinder_win.cc",
      "profiler/native_unwinder_win.h",
      "profiler/stack_sampler_win.cc",
      "profiler/suspendable_thread_delegate_win.cc",
      "profiler/suspendable_thread_delegate_win.h",
      "profiler/win32_stack_frame_unwinder.cc",
      "profiler/win32_stack_frame_unwinder.h",
      "rand_util_win.cc",
      "scoped_clear_last_error_win.cc",
      "strings/strcat_win.cc",
      "strings/strcat_win.h",
      "strings/string_number_conversions_win.cc",
      "strings/string_number_conversions_win.h",
      "strings/string_split_win.cc",
      "strings/string_split_win.h",
      "strings/string_util_win.cc",
      "strings/string_util_win.h",
      "strings/sys_string_conversions_win.cc",
      "sync_socket_win.cc",
      "synchronization/cancelable_event_win.cc",
      "synchronization/condition_variable_win.cc",
      "synchronization/lock_impl_win.cc",
      "synchronization/waitable_event_watcher_win.cc",
      "synchronization/waitable_event_win.cc",
      "system/sys_info_win.cc",
      "threading/platform_thread_win.cc",
      "threading/platform_thread_win.h",
      "threading/thread_local_storage_win.cc",
      "time/time_win.cc",
      "timer/hi_res_timer_manager_win.cc",
      "win/access_control_list.cc",
      "win/access_control_list.h",
      "win/access_token.cc",
      "win/access_token.h",
      "win/async_operation.h",
      "win/atl.h",
      "win/atl_throw.cc",
      "win/atl_throw.h",
      "win/com_init_balancer.cc",
      "win/com_init_balancer.h",
      "win/com_init_check_hook.cc",
      "win/com_init_check_hook.h",
      "win/com_init_util.cc",
      "win/com_init_util.h",
      "win/core_winrt_util.cc",
      "win/core_winrt_util.h",
      "win/current_module.h",
      "win/dark_mode_support.cc",
      "win/dark_mode_support.h",
      "win/default_apps_util.cc",
      "win/default_apps_util.h",
      "win/elevation_util.cc",
      "win/elevation_util.h",
      "win/embedded_i18n/language_selector.cc",
      "win/embedded_i18n/language_selector.h",
      "win/enum_variant.cc",
      "win/enum_variant.h",
      "win/event_trace_consumer.h",
      "win/event_trace_controller.cc",
      "win/event_trace_controller.h",
      "win/event_trace_provider.cc",
      "win/event_trace_provider.h",
      "win/hardware_check.cc",
      "win/hardware_check.h",
      "win/hstring_reference.cc",
      "win/hstring_reference.h",
      "win/i18n.cc",
      "win/i18n.h",
      "win/iat_patch_function.cc",
      "win/iat_patch_function.h",
      "win/map.h",
      "win/message_window.cc",
      "win/message_window.h",
      "win/nt_status.cc",
      "win/nt_status.h",
      "win/ntsecapi_shim.h",
      "win/object_watcher.cc",
      "win/object_watcher.h",
      "win/patch_util.cc",
      "win/patch_util.h",
      "win/pdh_shim.h",
      "win/pe_image_reader.cc",
      "win/pe_image_reader.h",
      "win/post_async_results.h",
      "win/process_startup_helper.cc",
      "win/process_startup_helper.h",
      "win/propvarutil.h",
      "win/reference.h",
      "win/registry.cc",
      "win/registry.h",
      "win/resource_exhaustion.cc",
      "win/resource_exhaustion.h",
      "win/resource_util.cc",
      "win/resource_util.h",
      "win/scoped_bstr.cc",
      "win/scoped_bstr.h",
      "win/scoped_co_mem.h",
      "win/scoped_com_initializer.cc",
      "win/scoped_com_initializer.h",
      "win/scoped_gdi_object.cc",
      "win/scoped_gdi_object.h",
      "win/scoped_handle.cc",
      "win/scoped_handle.h",
      "win/scoped_handle_verifier.cc",
      "win/scoped_handle_verifier.h",
      "win/scoped_hdc.h",
      "win/scoped_hglobal.h",
      "win/scoped_hstring.cc",
      "win/scoped_hstring.h",
      "win/scoped_localalloc.h",
      "win/scoped_pdh_query.cc",
      "win/scoped_pdh_query.h",
      "win/scoped_process_information.cc",
      "win/scoped_process_information.h",
      "win/scoped_propvariant.h",
      "win/scoped_safearray.h",
      "win/scoped_select_object.h",
      "win/scoped_variant.cc",
      "win/scoped_variant.h",
      "win/scoped_windows_thread_environment.h",
      "win/scoped_winrt_initializer.cc",
      "win/scoped_winrt_initializer.h",
      "win/security_descriptor.cc",
      "win/security_descriptor.h",
      "win/security_util.cc",
      "win/security_util.h",
      "win/shlwapi.h",
      "win/shortcut.cc",
      "win/shortcut.h",
      "win/sid.cc",
      "win/sid.h",
      "win/sphelper.h",
      "win/startup_information.cc",
      "win/startup_information.h",
      "win/variant_conversions.h",
      "win/variant_vector.cc",
      "win/variant_vector.h",
      "win/vector.cc",
      "win/vector.h",
      "win/wbemidl_shim.h",
      "win/win_handle_types.h",
      "win/win_handle_types_list.inc",
      "win/win_util.cc",
      "win/win_util.h",
      "win/winbase_shim.h",
      "win/wincred_shim.h",
      "win/wincrypt_shim.h",
      "win/window_enumerator.cc",
      "win/window_enumerator.h",
      "win/windows_defines.inc",
      "win/windows_h_disallowed.h",
      "win/windows_types.h",
      "win/windows_undefines.inc",
      "win/windows_version.cc",
      "win/windows_version.h",
      "win/windowsx_shim.h",
      "win/winrt_foundation_helpers.h",
      "win/winrt_storage_util.cc",
      "win/winrt_storage_util.h",
      "win/wintrust_shim.h",
      "win/wmi.cc",
      "win/wmi.h",
      "win/wrapped_window_proc.cc",
      "win/wrapped_window_proc.h",
    ]

    deps += [ "//base/win:base_win_buildflags" ]

    if (com_init_check_hook_disabled) {
      defines += [ "COM_INIT_CHECK_HOOK_DISABLED" ]
    }

    libs += [
      "cfgmgr32.lib",
      "ntdll.lib",
      "onecore.lib",
      "pdh.lib",
      "powrprof.lib",
      "propsys.lib",
      "setupapi.lib",
      "shcore.lib",
      "userenv.lib",
      "wbemuuid.lib",
      "winmm.lib",
    ]
    all_dependent_configs += [
      ":base_win_linker_flags",
      "//tools/win/DebugVisualizers:chrome",
    ]
    inputs = [
      # chrome.natvis listed as an input here instead of in
      # //tools/win/DebugVisualizers:chrome to prevent unnecessary size increase
      # in generated build files.
      "//tools/win/DebugVisualizers/chrome.natvis",
    ]
  }

  if (!is_win) {
    sources += [
      "file_descriptor_store.cc",
      "file_descriptor_store.h",
    ]
  }

  # Mac or iOS.
  if (is_apple) {
    sources += [
      "apple/backup_util.h",
      "apple/backup_util.mm",
      "apple/bridging.h",
      "apple/bundle_locations.h",
      "apple/bundle_locations.mm",
      "apple/call_with_eh_frame.cc",
      "apple/call_with_eh_frame.h",
      "apple/call_with_eh_frame_asm.S",
      "apple/dispatch_source.cc",
      "apple/dispatch_source.h",
      "apple/foundation_util.h",
      "apple/foundation_util.mm",
      "apple/mach_logging.cc",
      "apple/mach_logging.h",
      "apple/osstatus_logging.h",
      "apple/osstatus_logging.mm",
      "apple/owned_objc.h",
      "apple/owned_objc.mm",
      "apple/scoped_cffiledescriptorref.h",
      "apple/scoped_cftyperef.h",
      "apple/scoped_dispatch_object.h",
      "apple/scoped_mach_port.cc",
      "apple/scoped_mach_port.h",
      "apple/scoped_mach_vm.cc",
      "apple/scoped_mach_vm.h",
      "apple/scoped_nsautorelease_pool.h",
      "apple/scoped_nsautorelease_pool.mm",
      "apple/scoped_nsobject.h",
      "apple/scoped_objc_class_swizzler.h",
      "apple/scoped_objc_class_swizzler.mm",
      "apple/scoped_typeref.h",
      "file_version_info_apple.h",
      "file_version_info_apple.mm",
      "files/drive_info_apple.mm",
      "files/file_util_apple.mm",
      "memory/platform_shared_memory_mapper_apple.cc",
      "memory/platform_shared_memory_region_apple.cc",
      "message_loop/message_pump_apple.h",
      "message_loop/message_pump_apple.mm",
      "native_library_apple.mm",
      "process/process_metrics_apple.mm",
      "profiler/module_cache_apple.cc",
      "strings/sys_string_conversions_apple.mm",
      "system/sys_info_apple.mm",
      "threading/platform_thread_apple.mm",
      "time/time_apple.mm",
    ]
    frameworks += [
      "CoreFoundation.framework",
      "CoreGraphics.framework",
      "CoreText.framework",
      "Foundation.framework",
      "Security.framework",
    ]

    if (!is_ios || !use_blink) {
      sources += [ "synchronization/waitable_event_apple.cc" ]
    }
  }

  # Desktop Mac.
  if (is_mac) {
    sources += [
      "apple/mach_port_rendezvous.cc",
      "apple/mach_port_rendezvous.h",
      "enterprise_util.cc",
      "enterprise_util.h",
      "enterprise_util_mac.mm",
      "files/file_path_watcher_fsevents.cc",
      "files/file_path_watcher_fsevents.h",
      "files/file_path_watcher_kqueue.cc",
      "files/file_path_watcher_kqueue.h",
      "files/file_path_watcher_mac.cc",
      "mac/authorization_util.h",
      "mac/authorization_util.mm",
      "mac/close_nocancel.cc",
      "mac/code_signature.cc",
      "mac/code_signature.h",
      "mac/code_signature_spi.h",
      "mac/info_plist_data.h",
      "mac/info_plist_data.mm",
      "mac/launch_application.h",
      "mac/launch_application.mm",
      "mac/launch_services_spi.h",
      "mac/launchd.cc",
      "mac/launchd.h",
      "mac/login_util.cc",
      "mac/login_util.h",
      "mac/mac_util.h",
      "mac/mac_util.mm",
      "mac/os_crash_dumps.cc",
      "mac/os_crash_dumps.h",
      "mac/process_requirement.cc",
      "mac/process_requirement.h",
      "mac/scoped_aedesc.h",
      "mac/scoped_authorizationref.h",
      "mac/scoped_authorizationref.mm",
      "mac/scoped_ionotificationportref.h",
      "mac/scoped_ioobject.h",
      "mac/scoped_ioplugininterface.h",
      "mac/scoped_launch_data.h",
      "mac/scoped_mach_msg_destroy.h",
      "mac/scoped_sending_event.h",
      "mac/scoped_sending_event.mm",
      "message_loop/message_pump_kqueue.cc",
      "message_loop/message_pump_kqueue.h",
      "power_monitor/battery_level_provider_mac.mm",
      "power_monitor/battery_state_sampler_mac.cc",
      "power_monitor/iopm_power_source_sampling_event_source.cc",
      "power_monitor/iopm_power_source_sampling_event_source.h",
      "power_monitor/power_monitor_device_source_mac.mm",
      "power_monitor/thermal_state_observer_mac.h",
      "power_monitor/thermal_state_observer_mac.mm",
      "process/kill_mac.cc",
      "process/launch_mac.cc",
      "process/memory_mac.mm",
      "process/port_provider_mac.cc",
      "process/port_provider_mac.h",
      "process/process_handle_mac.cc",
      "process/process_info_mac.mm",
      "process/process_iterator_mac.cc",
      "process/process_mac.cc",
      "process/process_metrics_mac.cc",
      "profiler/core_unwinders_mac.cc",
      "profiler/frame_pointer_unwinder.cc",
      "profiler/frame_pointer_unwinder.h",
      "profiler/stack_sampler_mac.cc",
      "profiler/suspendable_thread_delegate_mac.cc",
      "profiler/suspendable_thread_delegate_mac.h",
      "synchronization/waitable_event_watcher_mac.cc",
      "system/sys_info_mac.mm",
    ]

    libs += [
      "bsm",
      "pmenergy",
      "pmsample",
    ]
    frameworks += [
      "ApplicationServices.framework",
      "AppKit.framework",
      "CoreFoundation.framework",
      "DiskArbitration.framework",
      "IOKit.framework",
      "OpenDirectory.framework",
    ]
  }

  # iOS
  if (is_ios) {
    sources += [
      "base_paths_ios.h",
      "base_paths_ios.mm",
      "ios/block_types.h",
      "ios/crb_protocol_observers.h",
      "ios/crb_protocol_observers.mm",
      "ios/device_util.h",
      "ios/device_util.mm",
      "ios/ios_util.h",
      "ios/ios_util.mm",
      "ios/ns_error_util.h",
      "ios/ns_error_util.mm",
      "ios/ns_range.h",
      "power_monitor/power_monitor_device_source_ios.mm",
      "process/process_metrics_ios.cc",
      "process/process_metrics_posix.cc",
      "profiler/core_unwinders_ios.cc",
      "profiler/stack_sampler_ios.cc",
      "system/sys_info_ios.mm",
    ]

    if (!ios_is_app_extension) {
      sources += [
        "critical_closure_internal_ios.mm",
        "ios/scoped_critical_action.h",
        "ios/scoped_critical_action.mm",
      ]
    }

    if (use_blink) {
      sources += [
        "apple/mach_port_rendezvous.cc",
        "apple/mach_port_rendezvous.h",
        "files/file_path_watcher_kqueue.cc",
        "files/file_path_watcher_kqueue.h",
        "files/file_path_watcher_mac.cc",
        "ios/sim_header_shims.h",
        "process/kill_ios.cc",
        "process/memory_mac.mm",
        "process/port_provider_mac.cc",
        "process/port_provider_mac.h",
        "process/process_handle_mac.cc",
        "process/process_ios.cc",
        "process/process_iterator_mac.cc",
        "process/process_posix.cc",
        "sync_socket_posix.cc",
        "synchronization/waitable_event_posix.cc",
        "synchronization/waitable_event_watcher_posix.cc",
      ]

      if (target_platform == "tvos") {
        # tvOS apps must be single-process. Build a Process version that does
        # the bare minimum and does not use Mach ports.
        sources += [ "process/process_tvos.cc" ]
      } else {
        sources += [ "process/process_mac.cc" ]
      }

      # We include launch_mac on simulator builds so unittests can fork.
      if (target_environment == "simulator") {
        sources += [
          "process/kill_mac.cc",
          "process/launch_mac.cc",
        ]
      } else {
        sources += [ "process/launch_ios.cc" ]
      }
    } else {
      sources += [
        "process/launch_ios.cc",
        "process/memory_stubs.cc",
        "process/process_stubs.cc",
      ]
    }

    if (is_cronet_build) {
      sources += [
        "message_loop/message_pump_io_ios.cc",
        "message_loop/message_pump_io_ios.h",
      ]
    } else if (use_blink) {
      sources += [
        "message_loop/message_pump_io_ios_libdispatch.cc",
        "message_loop/message_pump_io_ios_libdispatch.h",
      ]
    } else {
      sources += [
        "message_loop/message_pump_kqueue.cc",
        "message_loop/message_pump_kqueue.h",
      ]
    }

    if (ios_stack_profiler_enabled) {
      sources += [
        "profiler/frame_pointer_unwinder.cc",
        "profiler/frame_pointer_unwinder.h",
        "profiler/suspendable_thread_delegate_mac.cc",
        "profiler/suspendable_thread_delegate_mac.h",
      ]
    }
    if (!use_allocator_shim) {
      sources -= [
        "sampling_heap_profiler/poisson_allocation_sampler.cc",
        "sampling_heap_profiler/poisson_allocation_sampler.h",
        "sampling_heap_profiler/sampling_heap_profiler.cc",
        "sampling_heap_profiler/sampling_heap_profiler.h",
      ]
    }

    frameworks += [
      "Foundation.framework",
      "UIKit.framework",
    ]
  }

  # Linux.
  if (is_linux || is_chromeos) {
    # TODO(brettw) this will need to be parameterized at some point.
    linux_configs = []
    if (use_glib) {
      linux_configs += [ "//build/config/linux:glib" ]
    }

    configs += linux_configs
    all_dependent_configs += linux_configs
    sources += [
      "process/set_process_title_linux.cc",
      "process/set_process_title_linux.h",
      "system/sys_info_linux.cc",
    ]
    if (!is_cronet_build) {
      # These dependencies are not required on Android.
      sources += [
        "nix/mime_util_xdg.cc",
        "nix/mime_util_xdg.h",
        "nix/scoped_xdg_activation_token_injector.cc",
        "nix/scoped_xdg_activation_token_injector.h",
        "nix/xdg_util.cc",
        "nix/xdg_util.h",
      ]
      defines += [ "USE_SYMBOLIZE" ]
      deps += [
        ":dwarf_helpers",
        "//base/third_party/symbolize",
        "//base/third_party/xdg_user_dirs",
      ]
    }
  } else {
    if (!is_android) {
      sources -= [
        "linux_util.cc",
        "linux_util.h",
      ]
    }
  }

  if (use_blink) {
    sources += [
      "files/file_path_watcher.cc",
      "files/file_path_watcher.h",
      "sync_socket.cc",
      "sync_socket.h",
    ]
  }

  if (use_epoll) {
    sources += [
      "message_loop/message_pump_epoll.cc",
      "message_loop/message_pump_epoll.h",
    ]
  }

  # Android and MacOS have their own custom shared memory handle
  # implementations. e.g. due to supporting both POSIX and native handles.
  if (is_posix && !is_android && !is_apple) {
    sources += [
      "memory/platform_shared_memory_mapper_posix.cc",
      "memory/platform_shared_memory_region_posix.cc",
    ]
  }

  if (is_posix && !is_apple) {
    sources += [
      "strings/sys_string_conversions_posix.cc",
      "synchronization/waitable_event_posix.cc",
      "synchronization/waitable_event_watcher_posix.cc",
      "threading/platform_thread_internal_posix.cc",
      "threading/platform_thread_internal_posix.h",
      "time/time_now_posix.cc",
    ]

    # TODO(b/167763382) Find an alternate solution for Chromecast devices, since
    # adding the icui18n and icuuc deps significantly increases the binary size.
    if (!is_castos && !is_cast_android) {
      sources += [ "time/time_exploded_icu.cc" ]

      # The ICU dependency is only needed on systems with a 32-bit time_t.
      # However, that cannot be determined from build variables, like
      # |current_cpu|, since some 32-bit systems have a 64-bit time_t (and vice
      # versa). Thus, the dependency is taken here for all POSIX platforms and
      # the compiler+linker should be able to easily detect when the ICU
      # routines will not be called and delete them in the final linking.
      deps += [
        "//third_party/icu:icui18n",
        "//third_party/icu:icuuc",
      ]
    }
  }

  if (is_posix) {
    sources += [ "time/time_exploded_posix.cc" ]
  }

  if ((is_posix && !is_apple && !is_android) || is_fuchsia) {
    sources += [
      "profiler/core_unwinders_posix.cc",
      "profiler/stack_sampler_posix.cc",
    ]
  }

  if ((is_posix && !is_apple && !is_android && !is_chromeos) || is_fuchsia) {
    sources += [ "power_monitor/power_monitor_device_source_stub.cc" ]
  }

  # On ARC++-enabled ChromeOS system, we need TimeTicks::FromUptimeMillis to
  # interpret time values sent from Android container.
  if (is_android || is_chromeos) {
    sources += [ "time/time_android.cc" ]
  }

  if (use_glib) {
    sources += [
      "message_loop/message_pump_glib.cc",
      "message_loop/message_pump_glib.h",
    ]
  }

  if (enable_base_tracing) {
    sources += [
      "trace_event/auto_open_close_event.h",
      "trace_event/builtin_categories.h",
      "trace_event/heap_profiler.h",
      "trace_event/interned_args_helper.cc",
      "trace_event/interned_args_helper.h",
      "trace_event/log_message.cc",
      "trace_event/log_message.h",
      "trace_event/malloc_dump_provider.cc",
      "trace_event/malloc_dump_provider.h",
      "trace_event/memory_allocator_dump.cc",
      "trace_event/memory_allocator_dump.h",
      "trace_event/memory_dump_manager.cc",
      "trace_event/memory_dump_manager.h",
      "trace_event/memory_dump_manager_test_utils.h",
      "trace_event/memory_dump_provider.h",
      "trace_event/memory_dump_provider_info.cc",
      "trace_event/memory_dump_provider_info.h",
      "trace_event/memory_dump_request_args.cc",
      "trace_event/memory_dump_request_args.h",
      "trace_event/memory_dump_scheduler.cc",
      "trace_event/memory_dump_scheduler.h",
      "trace_event/memory_infra_background_allowlist.cc",
      "trace_event/memory_infra_background_allowlist.h",
      "trace_event/memory_pressure_level_proto.cc",
      "trace_event/memory_pressure_level_proto.h",
      "trace_event/memory_usage_estimator.cc",
      "trace_event/memory_usage_estimator.h",
      "trace_event/optional_trace_event.h",
      "trace_event/perfetto_proto_appender.cc",
      "trace_event/perfetto_proto_appender.h",
      "trace_event/process_memory_dump.cc",
      "trace_event/process_memory_dump.h",
      "trace_event/trace_arguments.cc",
      "trace_event/trace_arguments.h",
      "trace_event/trace_buffer.cc",
      "trace_event/trace_buffer.h",
      "trace_event/trace_config.cc",
      "trace_event/trace_config.h",
      "trace_event/trace_config_category_filter.cc",
      "trace_event/trace_config_category_filter.h",
      "trace_event/trace_event.h",
      "trace_event/trace_event_impl.cc",
      "trace_event/trace_event_impl.h",
      "trace_event/trace_log.cc",
      "trace_event/trace_log.h",
      "trace_event/traced_value.cc",
      "trace_event/traced_value.h",
      "trace_event/traced_value_support.h",
      "trace_event/tracing_agent.cc",
      "trace_event/tracing_agent.h",
      "trace_event/typed_macros.h",
      "trace_event/typed_macros_embedder_support.h",
      "tracing/perfetto_platform.cc",
      "tracing/perfetto_platform.h",
      "tracing/perfetto_task_runner.cc",
      "tracing/perfetto_task_runner.h",
      "tracing/trace_time.cc",
      "tracing/trace_time.h",
      "tracing/tracing_tls.cc",
      "tracing/tracing_tls.h",
    ]

    public_deps += [
      "//base/tracing/protos:chrome_track_event_zero",
      "//third_party/perfetto:libperfetto",
    ]

    deps += [
      "//base/tracing/protos:chrome_track_event",
      "//third_party/perfetto/include/perfetto/protozero",
    ]

    all_dependent_configs += [ "//third_party/perfetto/gn:public_config" ]

    if (is_win) {
      sources += [
        "trace_event/etw_interceptor_win.cc",
        "trace_event/etw_interceptor_win.h",
        "trace_event/trace_logging_minimal_win.cc",
        "trace_event/trace_logging_minimal_win.h",
      ]
    }

    if (is_android) {
      sources += [
        "trace_event/application_state_proto_android.cc",
        "trace_event/application_state_proto_android.h",
        "trace_event/cpufreq_monitor_android.cc",
        "trace_event/cpufreq_monitor_android.h",
        "trace_event/java_heap_dump_provider_android.cc",
        "trace_event/java_heap_dump_provider_android.h",
      ]
    }

    if (use_partition_alloc_as_malloc) {
      sources += [
        "trace_event/address_space_dump_provider.cc",
        "trace_event/address_space_dump_provider.h",
      ]
    }
  } else {
    sources += [
      "trace_event/trace_event_stub.cc",
      "trace_event/trace_event_stub.h",
    ]
  }

  if (using_sanitizer && !is_fuchsia) {
    data += [ "//tools/valgrind/asan/" ]
    data_deps +=
        [ "//build/config/clang:llvm-symbolizer_data($host_toolchain)" ]
  }

  if (!is_debug) {
    configs -= [ "//build/config/compiler:default_optimization" ]
    configs += [ "//build/config/compiler:optimize_max" ]
  }
}

if (is_linux || is_chromeos) {
  # Split out as a separate target for two reasons:
  # - the line number reader is 2x slower in debug builds if not optimized,
  #   leading to a worse dev experience and test timeouts.
  # - it would be nice to upstream this logic into something like Abseil. The
  #   logic that drives the base symbolizer is already imported more or less
  #   directly from Abseil.
  source_set("dwarf_helpers") {
    sources = [
      "debug/buffered_dwarf_reader.cc",
      "debug/buffered_dwarf_reader.h",
      "debug/dwarf_line_no.cc",
      "debug/dwarf_line_no.h",
    ]

    deps = [
      "//base/allocator/partition_allocator:raw_ptr",
      "//base/numerics:base_numerics",
      "//base/third_party/symbolize",
    ]

    defines = [ "USE_SYMBOLIZE" ]

    configs -= [ "//build/config/compiler:default_optimization" ]
    configs += [ "//build/config/compiler:optimize_max" ]
  }
}

# Build flags for Control Flow Integrity
# https://www.chromium.org/developers/testing/control-flow-integrity
buildflag_header("cfi_buildflags") {
  header = "cfi_buildflags.h"

  flags = [
    # TODO(pcc): remove CFI_CAST_CHECK, see https://crbug.com/626794.
    "CFI_CAST_CHECK=$is_cfi && $use_cfi_cast",
    "CFI_DIAG=$is_cfi && $use_cfi_diag",
    "CFI_ICALL_CHECK=$is_cfi && $use_cfi_icall",
    "CFI_ENFORCEMENT_TRAP=$is_cfi && !$use_cfi_diag",
    "CFI_ENFORCEMENT_DIAGNOSTIC=$is_cfi && $use_cfi_diag && !$use_cfi_recover",
  ]
}

buildflag_header("debugging_buildflags") {
  header = "debugging_buildflags.h"
  header_dir = "base/debug"
  enable_gdbinit_warning =
      is_debug && (strip_absolute_paths_from_debug_symbols || use_custom_libcxx)
  enable_lldbinit_warning =
      is_debug && strip_absolute_paths_from_debug_symbols && is_mac

  # TODO(crbug.com/40258939): Try and enable these checks on Android too.
  enable_commandline_sequence_checks =
      (is_debug || dcheck_always_on) && !is_android

  if (enable_stack_trace_line_numbers) {
    assert(
        symbol_level > 0,
        "symbol_level must be set to greater than 0 for source line numbers.")
  }
  _enable_stack_trace_line_numbers =
      !print_unsymbolized_stack_traces && enable_stack_trace_line_numbers

  flags = [
    "DCHECK_IS_CONFIGURABLE=$dcheck_is_configurable",
    "ENABLE_PROFILING=$enable_profiling",
    "CAN_UNWIND_WITH_FRAME_POINTERS=$can_unwind_with_frame_pointers",
    "UNSAFE_DEVELOPER_BUILD=$is_unsafe_developer_build",
    "CAN_UNWIND_WITH_CFI_TABLE=$can_unwind_with_cfi_table",
    "EXCLUDE_UNWIND_TABLES=$exclude_unwind_tables",
    "ENABLE_GDBINIT_WARNING=$enable_gdbinit_warning",
    "ENABLE_LLDBINIT_WARNING=$enable_lldbinit_warning",
    "EXPENSIVE_DCHECKS_ARE_ON=$enable_expensive_dchecks",
    "ENABLE_STACK_TRACE_LINE_NUMBERS=$_enable_stack_trace_line_numbers",
    "ENABLE_COMMANDLINE_SEQUENCE_CHECKS=$enable_commandline_sequence_checks",
    "ENABLE_ALLOCATION_STACK_TRACE_RECORDER=$build_allocation_stack_trace_recorder",
    "ENABLE_ALLOCATION_TRACE_RECORDER_FULL_REPORTING=$build_allocation_trace_recorder_full_reporting",
    "PRINT_UNSYMBOLIZED_STACK_TRACES=$print_unsymbolized_stack_traces",
  ]
}

buildflag_header("feature_list_buildflags") {
  header = "feature_list_buildflags.h"

  if (is_chromeos) {
    flags = [
      "ENABLE_BANNED_BASE_FEATURE_PREFIX=true",
      "BANNED_BASE_FEATURE_PREFIX=\"CrOSLateBoot\"",
    ]
  } else {
    flags = [ "ENABLE_BANNED_BASE_FEATURE_PREFIX=false" ]
  }
}

buildflag_header("orderfile_buildflags") {
  header = "orderfile_buildflags.h"
  header_dir = "base/android/orderfile"
  using_order_profiling = is_android && use_order_profiling
  using_devtools_dumping =
      is_android && devtools_instrumentation_dumping && enable_base_tracing

  flags = [
    "DEVTOOLS_INSTRUMENTATION_DUMPING=$using_devtools_dumping",
    "ORDERFILE_INSTRUMENTATION=$using_order_profiling",
  ]
}

# Build flags for ProtectedMemory
buildflag_header("protected_memory_buildflags") {
  header = "protected_memory_buildflags.h"
  header_dir = "base/memory"

  protected_memory_enabled = !is_component_build && is_clang &&
                             (is_win || is_linux || is_android || is_mac)

  flags = [ "PROTECTED_MEMORY_ENABLED=$protected_memory_enabled" ]
}

buildflag_header("synchronization_buildflags") {
  header = "synchronization_buildflags.h"
  header_dir = "base/synchronization"

  flags =
      [ "ENABLE_MUTEX_PRIORITY_INHERITANCE=$enable_mutex_priority_inheritance" ]
}

buildflag_header("anchor_functions_buildflags") {
  header = "anchor_functions_buildflags.h"
  header_dir = "base/android/library_loader"
  _supports_code_ordering =
      is_android && (current_cpu == "arm" || current_cpu == "arm64" ||
                     current_cpu == "x86" || current_cpu == "x64")

  flags = [
    "USE_LLD=$use_lld",
    "SUPPORTS_CODE_ORDERING=$_supports_code_ordering",
  ]
}

buildflag_header("clang_profiling_buildflags") {
  header = "clang_profiling_buildflags.h"
  header_dir = "base"

  flags = [
    "CLANG_PROFILING=$use_clang_profiling",
    "CLANG_PROFILING_INSIDE_SANDBOX=$use_clang_profiling_inside_sandbox",
    "USE_CLANG_COVERAGE=$use_clang_coverage",
  ]
}

buildflag_header("sanitizer_buildflags") {
  header = "sanitizer_buildflags.h"
  header_dir = "base"

  flags = [
    "IS_HWASAN=$is_hwasan",
    "IS_UBSAN=$is_ubsan",
    "IS_UBSAN_SECURITY=$is_ubsan_security",
    "USING_SANITIZER=$using_sanitizer",
  ]
}

buildflag_header("tracing_buildflags") {
  header = "tracing_buildflags.h"

  flags = [
    "ENABLE_BASE_TRACING=$enable_base_tracing",
    "USE_PERFETTO_TRACE_PROCESSOR=$use_perfetto_trace_processor",
    "OPTIONAL_TRACE_EVENTS_ENABLED=$optional_trace_events_enabled",
  ]
}

buildflag_header("profiler_buildflags") {
  header = "profiler_buildflags.h"
  header_dir = "base/profiler"

  flags = [
    "ENABLE_ARM_CFI_TABLE=$enable_arm_cfi_table",
    "IOS_STACK_PROFILER_ENABLED=$ios_stack_profiler_enabled",
  ]
}

buildflag_header("power_monitor_buildflags") {
  header = "power_monitor_buildflags.h"
  header_dir = "base/power_monitor"
  _has_battery_provider_impl = is_win || is_mac

  flags = [ "HAS_BATTERY_LEVEL_PROVIDER_IMPL=$_has_battery_provider_impl" ]
}

buildflag_header("fuzzing_buildflags") {
  header = "fuzzing_buildflags.h"
  flags = [ "USE_FUZZING_ENGINE=$use_fuzzing_engine" ]
}

# This is the subset of files from base that should not be used with a dynamic
# library. Note that this library cannot depend on base because base depends on
# base_static.
static_library("base_static") {
  sources = [
    "base_export.h",
    "base_switches.cc",
    "base_switches.h",
    "immediate_crash.h",
  ]

  deps = [ ":fuzzing_buildflags" ]

  if (is_win) {
    sources += [
      "win/static_constants.cc",
      "win/static_constants.h",
    ]

    public_deps = [ "//base/win:pe_image" ]

    # Disable sanitizer coverage in win/pe_image.cc. It is called by the sandbox
    # before sanitizer coverage can initialize. http://crbug.com/484711
    configs -= [ "//build/config/sanitizers:default_sanitizer_flags" ]
    configs +=
        [ "//build/config/sanitizers:default_sanitizer_flags_but_coverage" ]
  }

  if (!is_debug) {
    configs -= [ "//build/config/compiler:default_optimization" ]
    configs += [ "//build/config/compiler:optimize_max" ]
  }
}

action("build_date") {
  script = "write_build_date_header.py"

  outputs = [ "$target_gen_dir/generated_build_date.h" ]

  args = [
    rebase_path("$target_gen_dir/generated_build_date.h", root_build_dir),
    build_timestamp,
  ]
}

process_version("check_version_internal") {
  template_file = "//base/check_version_internal.h.in"
  output = "$target_gen_dir/check_version_internal.h"

  # TODO(pbos): Consider moving chrome/VERSION into base/VERSION now that base
  # depends on it. This dependency currently breaks webrtc which pulls in //base
  # (but not //chrome). crbug.com/webrtc/13662 tracks removing webrtc's
  # dependency on //base. For now we fake the check version far into the future.
  # This breaks check_unittest.cc when built outside of chromium, but webrtc
  # doesn't need to build base_unittests. If this is required in the future, but
  # we haven't moved chrome/VERSION, we should ifdef out those tests.
  if (build_with_chromium) {
    sources = [ "//chrome/VERSION" ]
    extra_args = [
      "-e",
      "VERSION_MAJOR=\"%s\" % (MAJOR)",
      "-e",
      "NEXT_VERSION_MAJOR=\"%d\" % (int(MAJOR) + 1)",
    ]
  } else {
    extra_args = [
      "-e",
      "VERSION_MAJOR=\"9998\"",
      "-e",
      "NEXT_VERSION_MAJOR=\"9999\"",
    ]
  }
}