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Command-Line Reference

bazel [<startup options>] <command> [<args>]
or
bazel [<startup options>] <command> [<args>] -- [<target patterns>]
See the User's Guide for the target patterns syntax.

Option Syntax

Options can be passed to Bazel in different ways. Options that require a value can be passed with either an equals sign or a space:

--<option>=<value>
--<option> <value>
Some options have a single character short form; in that case, the short form has to be passed with a single dash and a space.
-<short_form> <value>

Boolean options can be enabled as follows:

--<option>
--<option>=[true|yes|1]
and disabled as follows:
--no<option>
--<option>=[false|no|0]

Tristate options are usually set to automatic by default, and can be force-enabled as follows:

--<option>=[true|yes|1]
or force-disabled as follows:
--no<option>
--<option>=[false|no|0]

Commands

analyze-profile Analyzes build profile data.
aquery Analyzes the given targets and queries the action graph.
build Builds the specified targets.
canonicalize-flags Canonicalizes a list of bazel options.
clean Removes output files and optionally stops the server.
coverage Generates code coverage report for specified test targets.
cquery Loads, analyzes, and queries the specified targets w/ configurations.
dump Dumps the internal state of the bazel server process.
fetch Fetches external repositories that are prerequisites to the targets.
help Prints help for commands, or the index.
info Displays runtime info about the bazel server.
license Prints the license of this software.
mobile-install Installs targets to mobile devices.
print_action Prints the command line args for compiling a file.
query Executes a dependency graph query.
run Runs the specified target.
shutdown Stops the bazel server.
sync Syncs all repositories specified in the workspace file
test Builds and runs the specified test targets.
version Prints version information for bazel.

Startup Options

Options that appear before the command and are parsed by the client:
--[no]batch default: "false"
If set, Bazel will be run as just a client process without a server, instead of in the standard client/server mode. This is deprecated and will be removed, please prefer shutting down the server explicitly if you wish to avoid lingering servers.
Tags: loses_incremental_state, bazel_internal_configuration, deprecated
--[no]batch_cpu_scheduling default: "false"
Only on Linux; use 'batch' CPU scheduling for Bazel. This policy is useful for workloads that are non-interactive, but do not want to lower their nice value. See 'man 2 sched_setscheduler'. If false, then Bazel does not perform a system call.
Tags: host_machine_resource_optimizations
--bazelrc=<path> default: see description
The location of the user .bazelrc file containing default values of Bazel options. If unspecified, Bazel uses the first .bazelrc file it finds in the following two locations: the workspace directory, then the user's home directory. Use /dev/null to disable the search for a user rc file, e.g. in release builds.
Tags: changes_inputs
--[no]block_for_lock default: "true"
When --noblock_for_lock is passed, Bazel does not wait for a running command to complete, but instead exits immediately.
Tags: eagerness_to_exit
--[no]client_debug default: "false"
If true, log debug information from the client to stderr. Changing this option will not cause the server to restart.
Tags: affects_outputs, bazel_monitoring
--connect_timeout_secs=<an integer> default: "30"
The amount of time the client waits for each attempt to connect to the server
Tags: bazel_internal_configuration
--[no]deep_execroot default: "true"
If set, the execution root will be under $OUTPUT_BASE/execroot instead of $OUTPUT_BASE.
Tags: loses_incremental_state, execution
--[no]expand_configs_in_place default: "true"
Changed the expansion of --config flags to be done in-place, as opposed to in a fixed point expansion between normal rc options and command-line specified options.
Tags: no_op, deprecated
--[no]experimental_oom_more_eagerly default: "false"
If set, attempt to detect Java heap OOM conditions and exit before thrashing. Only honored when --batch is also passed. In some cases, builds that previously succeeded may OOM if they were close to OOMing before. Deprecated: Use the command argument --experimental_oom_more_eagerly_threshold instead.
Tags: loses_incremental_state, eagerness_to_exit
--experimental_oom_more_eagerly_threshold=<an integer> default: "100"
If this flag is set, Bazel will OOM if, after two full GC's, more than this percentage of the (old gen) heap is still occupied. Deprecated: Use the command argument --experimental_oom_more_eagerly_threshold instead.
Tags: loses_incremental_state, eagerness_to_exit
--[no]home_rc default: "true"
Whether or not to look for the home bazelrc file at $HOME/.bazelrc
Tags: changes_inputs
--[no]idle_server_tasks default: "true"
Run System.gc() when the server is idle
Tags: loses_incremental_state, host_machine_resource_optimizations
--[no]ignore_all_rc_files default: "false"
Disables all rc files, regardless of the values of other rc-modifying flags, even if these flags come later in the list of startup options.
Tags: changes_inputs
--io_nice_level={-1,0,1,2,3,4,5,6,7} default: "-1"
Only on Linux; set a level from 0-7 for best-effort IO scheduling using the sys_ioprio_set system call. 0 is highest priority, 7 is lowest. The anticipatory scheduler may only honor up to priority 4. If set to a negative value, then Bazel does not perform a system call.
Tags: host_machine_resource_optimizations
--macos_qos_class=<a string> default: "default"
Sets the QoS service class of the bazel server when running on macOS. This flag has no effect on all other platforms but is supported to ensure rc files can be shared among them without changes. Possible values are: user- interactive, user-initiated, default, utility, and background.
Tags: host_machine_resource_optimizations
--max_idle_secs=<integer> default: "10800"
The number of seconds the build server will wait idling before shutting down. Zero means that the server will never shutdown.
Tags: eagerness_to_exit, loses_incremental_state
--output_base=<path> default: see description
If set, specifies the output location to which all build output will be written. Otherwise, the location will be ${OUTPUT_ROOT}/_bazel_${USER} /${MD5_OF_WORKSPACE_ROOT}. Note: If you specify a different option from one to the next Bazel invocation for this value, you'll likely start up a new, additional Bazel server. Bazel starts exactly one server per specified output base. Typically there is one output base per workspace - however, with this option you may have multiple output bases per workspace and thereby run multiple builds for the same client on the same machine concurrently. See ' bazel help shutdown' on how to shutdown a Bazel server.
Tags: affects_outputs, loses_incremental_state
--output_user_root=<path> default: see description
The user-specific directory beneath which all build outputs are written; by default, this is a function of $USER, but by specifying a constant, build outputs can be shared between collaborating users.
Tags: affects_outputs, loses_incremental_state
--server_jvm_out=<path> default: see description
The location to write the server's JVM's output. If unset then defaults to a location in output_base.
Tags: affects_outputs, loses_incremental_state
--[no]shutdown_on_low_sys_mem default: "false"
If max_idle_secs is set and the build server has been idle for a while, shut down the server when the system is low on free RAM. Linux only.
Tags: eagerness_to_exit, loses_incremental_state
--[no]system_rc default: "true"
Whether or not to look for the system-wide bazelrc.
Tags: changes_inputs
--[no]unlimit_coredumps default: "false"
Raises the soft coredump limit to the hard limit to make coredumps of the server (including the JVM) and the client possible under common conditions. Stick this flag in your bazelrc once and forget about it so that you get coredumps when you actually encounter a condition that triggers them.
Tags: bazel_internal_configuration
--[no]watchfs default: "false"
If true, bazel tries to use the operating system's file watch service for local changes instead of scanning every file for a change.
Tags: deprecated
--[no]workspace_rc default: "true"
Whether or not to look for the workspace bazelrc file at $workspace/.bazelrc
Tags: changes_inputs
Options that configure the toolchain used for action execution:
--[no]incompatible_enable_execution_transition default: "false"
If false, the execution transition behaves like the host transition.
Tags: bazel_internal_configuration, incompatible_change, triggered_by_all_incompatible_changes
Miscellaneous options, not otherwise categorized.:
--host_jvm_args=<jvm_arg> multiple uses are accumulated
Flags to pass to the JVM executing Bazel.
--host_jvm_debug
Convenience option to add some additional JVM startup flags, which cause the JVM to wait during startup until you connect from a JDWP-compliant debugger (like Eclipse) to port 5005.
Expands to:
  --host_jvm_args=-Xdebug
  --host_jvm_args=-Xrunjdwp:transport=dt_socket,server=y,address=5005
--host_jvm_profile=<profiler_name> default: ""
Convenience option to add some profiler/debugger-specific JVM startup flags. Bazel has a list of known values that it maps to hard-coded JVM startup flags, possibly searching some hardcoded paths for certain files.
--server_javabase=<jvm path> default: ""
Path to the JVM used to execute Bazel itself.

Options Common to all Commands

Options that control build execution:
--experimental_oom_more_eagerly_threshold=<an integer> default: "100"
If this flag is set to a value less than 100, Bazel will OOM if, after two full GC's, more than this percentage of the (old gen) heap is still occupied.
Tags: host_machine_resource_optimizations
This option affects semantics of the Starlark language or the build API accessible to BUILD files, .bzl files, or WORKSPACE files.:
--[no]debug_depset_depth default: "false"
Enables an expensive additional check that causes depset construction to fail fast if the depset's depth would exceed the limit specified by `-- nested_set_depth_limit`. Ordinarily this failure occurs only when the depset is flattened, which may be far from its point of creation.
Tags: build_file_semantics
--[no]experimental_action_args default: "false"
If set to true, Action objects support an `args` field: a frozen Args object which contains all action arguments.
Tags: bazel_internal_configuration, experimental
--[no]experimental_allow_incremental_repository_updates default: "true"
This flag will be removed in Bazel 1.0. Please do not use it. Incremental repository updates feature is now enabled without the flag.
Tags: bazel_internal_configuration, experimental
--[no]experimental_allow_tags_propagation default: "false"
If set to true, tags will be propagated from a target to the actions' execution requirements; otherwise tags are not propagated. See https://github. com/bazelbuild/bazel/issues/8830 for details.
Tags: build_file_semantics, experimental
--[no]experimental_aspect_output_propagation default: "false"
If set to true, allows Starlark aspects to be defined with `apply_to_generating_rules`, which will enable them to propagate through output file target nodes.
Tags: loading_and_analysis, experimental
--[no]experimental_cc_shared_library default: "false"
If set to true, rule attributes and Starlark API methods needed for the rule cc_shared_library will be available
Tags: build_file_semantics, loading_and_analysis, experimental
--[no]experimental_enable_android_migration_apis default: "false"
If set to true, enables the APIs required to support the Android Starlark migration.
Tags: build_file_semantics
--[no]experimental_google_legacy_api default: "false"
If set to true, exposes a number of experimental pieces of Starlark build API pertaining to Google legacy code.
Tags: loading_and_analysis, experimental
--[no]experimental_platforms_api default: "false"
If set to true, enables a number of platform-related Starlark APIs useful for debugging.
Tags: loading_and_analysis, experimental
--[no]experimental_repo_remote_exec default: "false"
If set to true, repository_rule gains some remote execution capabilities.
Tags: build_file_semantics, loading_and_analysis, experimental
--[no]experimental_starlark_config_transitions default: "true"
If set to true, enables creation of configuration transition objects (the `transition()` function) in Starlark.
Tags: loading_and_analysis, experimental
--[no]experimental_starlark_unused_inputs_list default: "true"
If set to true, enables use of 'unused_inputs_list' in starlark action. run().
Tags: changes_inputs, experimental
--[no]incompatible_always_check_depset_elements default: "false"
Check the validity of elements added to depsets, in all constructors. Elements must be immutable, but historically the depset(direct=...) constructor forgot to check. Use tuples instead of lists in depset elements. See https://github. com/bazelbuild/bazel/issues/10313 for details.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_bzl_disallow_load_after_statement default: "true"
If set to true, all `load` must be called at the top of .bzl files, before any other statement.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
When true, Bazel no longer returns a list from linking_context. libraries_to_link but returns a depset instead.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_depset_union default: "true"
If set to true, depset union using `+`, `|` or `.union` are forbidden. Use the `depset` constructor instead.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disable_deprecated_attr_params default: "true"
If set to true, disable the deprecated parameters 'single_file' and 'non_empty' on attribute definition methods, such as attr.label().
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disable_depset_items default: "false"
If set to true, disable the 'items' parameter of the depset constructor. Use the 'transitive' and 'direct' parameters instead.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disable_target_provider_fields default: "false"
If set to true, disable the ability to access providers on 'target' objects via field syntax. Use provider-key syntax instead. For example, instead of using `ctx.attr.dep.my_info` to access `my_info` from inside a rule implementation function, use `ctx.attr.dep[MyInfo]`. See https://github. com/bazelbuild/bazel/issues/9014 for details.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disable_third_party_license_checking default: "true"
If true, disables all license checking logic
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_dict_lookup_unhashable_keys default: "true"
If set to true, dict key lookups using `in` or `dict.get` will fail with unhashable types.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_empty_glob default: "false"
If set to true, the default value of the `allow_empty` argument of glob() is False.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_legacy_javainfo default: "true"
Deprecated. No-op.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_struct_provider_syntax default: "false"
If set to true, rule implementation functions may not return a struct. They must instead return a list of provider instances.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_unverified_http_downloads default: "true"
If set, disallow downloads via plain http if no checksum is given
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_new_actions_api default: "true"
If set to true, the API to create actions is only available on `ctx.actions`, not on `ctx`.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_no_attr_license default: "true"
If set to true, disables the function `attr.license`.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_no_implicit_file_export default: "false"
If set, (used) source files are are package private unless exported explicitly. See https://github.com/bazelbuild/proposals/blob/master/designs/2019-10-24-file- visibility.html
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_no_output_attr_default default: "true"
If set to true, disables the `default` parameter of the `attr.output` and `attr. output_list` attribute definition functions.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_no_rule_outputs_param default: "false"
If set to true, disables the `outputs` parameter of the `rule()` Starlark function.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_no_support_tools_in_action_inputs default: "true"
If set to true, tools should be passed to `ctx.actions.run()` and `ctx.actions. run_shell()` using the `tools` parameter instead of the `inputs` parameter. Furthermore, if this flag is set and a `tools` parameter is not passed to the action, it is an error for any tools to appear in the `inputs`.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_no_target_output_group default: "true"
If set to true, disables the output_group field of the 'Target' Starlark type.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remap_main_repo default: "true"
If set to true, will treat references to '@<main repo name>' the same as '@'.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_enabled_toolchain_types default: "false"
If set to true, the platform configuration fragment cannot access the (deprecated) list of enabled toolchain types.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_restrict_named_params default: "true"
If set to true, restricts a number of Starlark built-in function parameters to be only specifiable positionally (and not by keyword).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_restrict_string_escapes default: "false"
If set to true, unknown string escapes like `\a` become rejected.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_run_shell_command_string default: "false"
If set to true, the command parameter of actions.run_shell will only accept string
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_cc_configure_from_rules_cc default: "false"
When true, Bazel will no longer allow using cc_configure from @bazel_tools. Please see https://github.com/bazelbuild/bazel/issues/10134 for details and migration instructions.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_visibility_private_attributes_at_definition default: "false"
If set to true, the visibility of private rule attributes is checked with respect to the rule definition, rather than the rule usage.
Tags: build_file_semantics, incompatible_change, triggered_by_all_incompatible_changes
--nested_set_depth_limit=<an integer> default: "3500"
Limit on the depth of NestedSet, which is the internal data structure used to implement `depset` in Starlark. If a depset is flattened during evaluation of Starlark code or a NestedSet is flattened internally, and that data structure has a depth exceeding this limit, then the Bazel invocation will fail.
Tags: loading_and_analysis
Options that trigger optimizations of the build time:
--[no]incompatible_do_not_split_linking_cmdline default: "true"
When true, Bazel no longer modifies command line flags used for linking, and also doesn't selectively decide which flags go to the param file and which don't. See https://github.com/bazelbuild/bazel/issues/7670 for details.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]keep_state_after_build default: "true"
If false, Bazel will discard the inmemory state from this build when the build finishes. Subsequent builds will not have any incrementality with respect to this one.
Tags: loses_incremental_state
--[no]track_incremental_state default: "true"
If false, Bazel will not persist data that allows for invalidation and re- evaluation on incremental builds in order to save memory on this build. Subsequent builds will not have any incrementality with respect to this one. Usually you will want to specify --batch when setting this to false.
Tags: loses_incremental_state
Options that affect the verbosity, format or location of logging:
--[no]announce_rc default: "false"
Whether to announce rc options.
Tags: affects_outputs
--[no]attempt_to_print_relative_paths default: "false"
When printing the location part of messages, attempt to use a path relative to the workspace directory or one of the directories specified by --package_path.
Tags: terminal_output
--bes_backend=<a string> default: ""
Specifies the build event service (BES) backend endpoint as HOST or HOST:PORT. Disabled by default.The supported schemas are grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel'll default to grpcs. Specify grpc: // schema to disable TLS.
Tags: affects_outputs
--[no]bes_best_effort default: "false"
BES best effort upload has been removed. The flag has no more functionality attached to it and will be removed in a future release.
Tags: affects_outputs
--bes_keywords=<comma-separated list of options> multiple uses are accumulated
Specifies a list of notification keywords to be added the default set of keywords published to BES ("command_name=<command_name> ", "protocol_name=BEP"). Defaults to none.
Tags: affects_outputs
--[no]bes_lifecycle_events default: "true"
Specifies whether to publish BES lifecycle events. (defaults to 'true').
Tags: affects_outputs
--bes_outerr_buffer_size=<an integer> default: "10240"
Specifies the maximal size of stdout or stderr to be buffered in BEP, before it is reported as a progress event. Individual writes are still reported in a single event, even if larger than the specified value up to -- bes_outerr_chunk_size.
Tags: affects_outputs
--bes_outerr_chunk_size=<an integer> default: "1048576"
Specifies the maximal size of stdout or stderr to be sent to BEP in a single message.
Tags: affects_outputs
--bes_proxy=<a string> default: see description
Connect to the Build Event Service through a proxy. Currently this flag can only be used to configure a Unix domain socket (unix:/path/to/socket).
--bes_results_url=<a string> default: ""
Specifies the base URL where a user can view the information streamed to the BES backend. Bazel will output the URL appended by the invocation id to the terminal.
Tags: terminal_output
--bes_timeout=<An immutable length of time.> default: "0s"
Specifies how long bazel should wait for the BES/BEP upload to complete after the build and tests have finished. A valid timeout is a natural number followed by a unit: Days (d), hours (h), minutes (m), seconds (s), and milliseconds (ms). The default value is '0' which means that there is no timeout.
Tags: affects_outputs
--build_event_binary_file=<a string> default: ""
If non-empty, write a varint delimited binary representation of representation of the build event protocol to that file.
Tags: affects_outputs
--[no]build_event_binary_file_path_conversion default: "true"
Convert paths in the binary file representation of the build event protocol to more globally valid URIs whenever possible; if disabled, the file:// uri scheme will always be used
Tags: affects_outputs
--build_event_json_file=<a string> default: ""
If non-empty, write a JSON serialisation of the build event protocol to that file.
Tags: affects_outputs
--[no]build_event_json_file_path_conversion default: "true"
Convert paths in the json file representation of the build event protocol to more globally valid URIs whenever possible; if disabled, the file:// uri scheme will always be used
Tags: affects_outputs
--build_event_max_named_set_of_file_entries=<an integer> default: "-1"
The maximum number of entries for a single named_set_of_files event; values smaller than 2 are ignored and no event splitting is performed. This is intended for limiting the maximum event size in the build event protocol, although it does not directly control event size. The total event size is a function of the structure of the set as well as the file and uri lengths, which may in turn depend on the hash function.
Tags: affects_outputs
--[no]build_event_publish_all_actions default: "false"
Whether all actions should be published.
Tags: affects_outputs
--build_event_text_file=<a string> default: ""
If non-empty, write a textual representation of the build event protocol to that file
Tags: affects_outputs
--[no]build_event_text_file_path_conversion default: "true"
Convert paths in the text file representation of the build event protocol to more globally valid URIs whenever possible; if disabled, the file:// uri scheme will always be used
Tags: affects_outputs
--[no]experimental_announce_profile_path default: "false"
If enabled, adds the JSON profile path to the log.
Tags: affects_outputs, bazel_monitoring
--[no]experimental_build_event_expand_filesets default: "false"
If true, expand Filesets in the BEP when presenting output files.
Tags: affects_outputs
--experimental_build_event_upload_strategy=<a string> default: see description
Selects how to upload artifacts referenced in the build event protocol.
Tags: affects_outputs
--[no]experimental_generate_json_trace_profile default: "false"
If enabled, Bazel profiles the build and writes a JSON-format profile into a file in the output base. View profile by loading into chrome://tracing.
Tags: affects_outputs, bazel_monitoring
--[no]experimental_post_profile_started_event default: "false"
If set, Bazel will post the ProfilerStartedEvent including the path to the profile.
Tags: affects_outputs, bazel_monitoring
--[no]experimental_profile_action_counts default: "false"
If set, Bazel will add action counts at the top of the JSON profile.
Tags: affects_outputs, bazel_monitoring
--experimental_profile_additional_tasks=<phase, action, __action_builder, __action_submit, action_check, __action_execute, action_lock, action_release, __action_graph, action_update, action_complete, info, __exception, create_package, __package_validity_check, __spawn, remote_execution, local_execution, scanner, local_parse, upload_time, process_time, remote_queue, remote_setup, fetch, vfs_stat, vfs_dir, vfs_readlink, vfs_md5, vfs_xattr, vfs_delete, vfs_open, vfs_read, vfs_write, vfs_glob, vfs_vmfs_stat, vfs_vmfs_dir, vfs_vmfs_read, wait, __configured_target, thread_name, __test, skyframe_eval, skyfunction, critical_path, critical_path_component, handle_gc_notification, local_cpu_usage, action_counts, __process_scan, __loop_output_artifacts, __locate_relative, __construct_include_paths, __parse_and_hints_results, __process_results_and_enqueue, starlark_parser, starlark_user_fn, starlark_builtin_fn, starlark_user_compiled_fn, action_fs_staging, remote_cache_check, remote_download or unknown> multiple uses are accumulated
Specifies additional profile tasks to be included in the profile.
Tags: affects_outputs, bazel_monitoring
--[no]experimental_profile_cpu_usage default: "false"
If set, Bazel will measure cpu usage and add it to the JSON profile.
Tags: affects_outputs, bazel_monitoring
--[no]experimental_slim_json_profile default: "false"
Slims down the size of the JSON profile by merging events if the profile gets too large.
Tags: affects_outputs, bazel_monitoring
--[no]experimental_stream_log_file_uploads default: "false"
Stream log file uploads directly to the remote storage rather than writing them to disk.
Tags: affects_outputs
--[no]experimental_ui_deduplicate default: "false"
Make the UI deduplicate messages to have a cleaner scroll-back log.
Tags: terminal_output
--experimental_workspace_rules_log_file=<a path> default: see description
Log certain Workspace Rules events into this file as delimited WorkspaceEvent protos.
--[no]incompatible_enable_profile_by_default default: "true"
If enabled, Bazel will generate a JSON profile by default.
Tags: affects_outputs, bazel_monitoring, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_binary_profile default: "true"
If enabled, Bazel will write JSON-format profiles instead of binary profiles.
Tags: affects_outputs, bazel_monitoring, incompatible_change, triggered_by_all_incompatible_changes
--[no]json_trace_compression default: "auto"
If enabled, Bazel compresses the JSON-format profile with gzip. By default, this is decided based on the extension of the file specified in --profile.
Tags: affects_outputs, bazel_monitoring
--[no]legacy_important_outputs default: "true"
Use this to suppress generation of the legacy important_outputs field in the TargetComplete event.
Tags: affects_outputs
--logging=<0 <= an integer <= 6> default: "3"
The logging level.
Tags: affects_outputs
--memory_profile_stable_heap_parameters=<two integers, separated by a comma> default: "1,0"
Tune memory profile's computation of stable heap at end of build. Should be two integers separated by a comma. First parameter is the number of GCs to perform. Second parameter is the number of seconds to wait between GCs.
Tags: bazel_monitoring
--profile=<a path> default: see description
If set, profile Bazel and write data to the specified file. Use bazel analyze- profile to analyze the profile.
Tags: affects_outputs, bazel_monitoring
--project_id=<a string> default: see description
Specifies the BES project identifier. Defaults to null.
Tags: affects_outputs
--tool_tag=<a string> default: ""
A tool name to attribute this Bazel invocation to.
Tags: affects_outputs, bazel_monitoring
Miscellaneous options, not otherwise categorized.:
--all_incompatible_changes
Enables all options of the form --incompatible_*. Use this option to find places where your build may break in the future due to deprecations or other changes.
Expands to:
  --incompatible_always_check_depset_elements
  --incompatible_bzl_disallow_load_after_statement
  --incompatible_depset_for_libraries_to_link_getter
  --incompatible_depset_union
  --incompatible_disable_deprecated_attr_params
  --incompatible_disable_depset_items
  --incompatible_disable_target_provider_fields
  --incompatible_disable_third_party_license_checking
  --incompatible_disallow_dict_lookup_unhashable_keys
  --incompatible_disallow_empty_glob
  --incompatible_disallow_legacy_javainfo
  --incompatible_disallow_struct_provider_syntax
  --incompatible_disallow_unverified_http_downloads
  --incompatible_do_not_split_linking_cmdline
  --incompatible_enable_profile_by_default
  --incompatible_new_actions_api
  --incompatible_no_attr_license
  --incompatible_no_implicit_file_export
  --incompatible_no_output_attr_default
  --incompatible_no_rule_outputs_param
  --incompatible_no_support_tools_in_action_inputs
  --incompatible_no_target_output_group
  --incompatible_remap_main_repo
  --incompatible_remove_binary_profile
  --incompatible_remove_enabled_toolchain_types
  --incompatible_restrict_named_params
  --incompatible_restrict_string_escapes
  --incompatible_run_shell_command_string
  --incompatible_tls_enabled_removed
  --incompatible_use_cc_configure_from_rules_cc
  --incompatible_visibility_private_attributes_at_definition

Tags: incompatible_change
--build_metadata=<a 'name=value' assignment> multiple uses are accumulated
Custom key-value string pairs to supply in a build event.
Tags: terminal_output
--color=<yes, no or auto> default: "auto"
Use terminal controls to colorize output.
--config=<a string> multiple uses are accumulated
Selects additional config sections from the rc files; for every < command>, it also pulls in the options from <command>:<config> if such a section exists; if this section doesn't exist in any .rc file, Bazel fails with an error. The config sections and flag combinations they are equivalent to are located in the tools/*.bazelrc config files.
--curses=<yes, no or auto> default: "auto"
Use terminal cursor controls to minimize scrolling output.
--[no]enable_platform_specific_config default: "false"
If true, Bazel picks up host-OS-specific config lines from bazelrc files. For example, if the host OS is Linux and you run bazel build, Bazel picks up lines starting with build:linux. Supported OS identifiers are linux, macos, windows, and freebsd. Enabling this flag is equivalent to using --config=linux on Linux, --config=windows on Windows, etc.
--[no]experimental_multi_threaded_digest default: "true"
Whether to always compute MD5 digests of files with multiple threads. Setting this to false may improve performance when using a spinning platter.
--experimental_ui_limit_console_output=<an integer> default: "0"
Number of bytes to which the UI will limit its output (non-positive values indicate unlimited). Once the limit is approaching, the UI will try hard to limit in a meaningful way, but will ultimately just drop all output.
--experimental_ui_mode=<oldest_actions or mnemonic_histogram> default: "oldest_actions"
Determines what kind of data is shown in the detailed progress bar. By default, it is set to show the oldest actions and their running time. The underlying data source is usually sampled in a mode-dependend way to fit within the number of lines given by --ui_actions_shown.
Tags: terminal_output
--google_auth_scopes=<comma-separated list of options> default: "https://www.googleapis.com/auth/cloud-platform"
A comma-separated list of Google Cloud authentication scopes.
--google_credentials=<a string> default: see description
Specifies the file to get authentication credentials from. See https://cloud. google.com/docs/authentication for details.
--[no]google_default_credentials default: "false"
Whether to use 'Google Application Default Credentials' for authentication. See https://cloud.google.com/docs/authentication for details. Disabled by default.
--[no]incompatible_tls_enabled_removed default: "true"
No-op. See #8061 for details.
Tags: incompatible_change, triggered_by_all_incompatible_changes
--[no]progress_in_terminal_title default: "false"
Show the command progress in the terminal title. Useful to see what bazel is doing when having multiple terminal tabs.
--[no]show_progress default: "true"
Display progress messages during a build.
--show_progress_rate_limit=<a double> default: "0.2"
Minimum number of seconds between progress messages in the output.
--[no]show_task_finish default: "false"
Display progress messages when tasks complete, not just when they start.
--[no]show_timestamps default: "false"
Include timestamps in messages
--tls_certificate=<a string> default: see description
Specify the TLS client certificate to use.
--[no]tls_enabled default: "false"
No-op. See #8061 for details.
--ui_actions_shown=<an integer> default: "8"
Number of concurrent actions shown in the detailed progress bar; each action is shown on a separate line. The progress bar always shows at least one one, all numbers less than 1 are mapped to 1. This option has no effect if --noui is set.
Tags: terminal_output
--[no]watchfs default: "false"
On Linux/macOS: If true, bazel tries to use the operating system's file watch service for local changes instead of scanning every file for a change. On Windows: this flag is a non-op.

Analyze-profile Options

Options that affect the verbosity, format or location of logging:
--[no]chart default: "true"
If --nochart is present, do not include the task chart with --html_details. The default is --chart.
Tags: affects_outputs
--combine=<a string> default: see description
If present, the statistics of all given profile files will be combined and output in text/--html format to the file named in the argument. Does not output HTML task charts.
Tags: affects_outputs
--dump=<text, raw, text-unsorted or raw-unsorted> [-d] default: see description
output full profile data dump either in human-readable 'text' format or script-friendly 'raw' format, either sorted or unsorted.
Tags: affects_outputs
--[no]html default: "false"
If present, an HTML file visualizing the tasks of the profiled build is created. The name of the html file is the name of the profile file plus '. html'.
Tags: affects_outputs
--[no]html_details default: "false"
If --html_details is present, the task diagram contains all tasks of the profile and performance statistics on user-defined and built-in Skylark functions. If --nohtml_details is present, an aggregated diagram is generated. The default is to generate an aggregated diagram.
Tags: affects_outputs
--[no]html_histograms default: "false"
If --html_histograms and --html_details is present, the HTML output will display histograms for Skylark functions clicked in the statistics table. This will increase file size massively.
Tags: affects_outputs
--html_pixels_per_second=<an integer> default: "50"
Defines the scale of the time axis of the task diagram. The unit is pixels per second. Default is 50 pixels per second.
Tags: affects_outputs
--task_tree=<a valid Java regular expression> default: see description
Print the tree of profiler tasks from all tasks matching the given regular expression.
Tags: affects_outputs
--task_tree_threshold=<a long integer> default: "50"
When printing a task tree, will skip tasks with a duration that is less than the given threshold in milliseconds.
Tags: affects_outputs
--[no]vfs_stats default: "false"
If present, include VFS path statistics.
Tags: affects_outputs
--vfs_stats_limit=<an integer> default: "-1"
Maximum number of VFS path statistics to print.
Tags: affects_outputs

Aquery Options

Inherits all options from build.

Options relating to query output and semantics:
--aspect_deps=<off, conservative or precise> default: "conservative"
How to resolve aspect dependencies when the output format is one of {xml,proto, record}. 'off' means no aspect dependencies are resolved, ' conservative' (the default) means all declared aspect dependencies are added regardless of whether they are given the rule class of direct dependencies, 'precise' means that only those aspects are added that are possibly active given the rule class of the direct dependencies. Note that precise mode requires loading other packages to evaluate a single target thus making it slower than the other modes. Also note that even precise mode is not completely precise: the decision whether to compute an aspect is decided in the analysis phase, which is not run during 'bazel query'.
Tags: build_file_semantics
--[no]implicit_deps default: "true"
If enabled, implicit dependencies will be included in the dependency graph over which the query operates. An implicit dependency is one that is not explicitly specified in the BUILD file but added by bazel.
Tags: build_file_semantics
--[no]include_artifacts default: "true"
Includes names of the action inputs and outputs in the output (potentially large).
Tags: terminal_output
--[no]include_aspects default: "false"
Whether to include aspect generated actions in the output.
Tags: terminal_output
--[no]include_commandline default: "true"
Includes the content of the action command lines in the output (potentially large).
Tags: terminal_output
--[no]include_param_files default: "false"
Include the content of the param files used in the command (potentially large). Note: Enabling this flag will automatically enable the --include_commandline flag.
Tags: terminal_output
--[no]incompatible_proto_output_v2 default: "false"
Whether aquery should print proto/textproto results with proto v2 (with ids in uint64 instead of string).
Tags: terminal_output, incompatible_change, triggered_by_all_incompatible_changes
--[no]nodep_deps default: "true"
If enabled, deps from "nodep" attributes will be included in the dependency graph over which the query operates. A common example of a " nodep" attribute is "visibility". Run and parse the output of `info build-language` to learn about all the "nodep" attributes in the build language.
Tags: build_file_semantics
--output=<a string> default: "text"
The format in which the aquery results should be printed. Allowed values for aquery are: text, textproto, proto.
Tags: terminal_output
--[no]proto:default_values default: "true"
If true, attributes whose value is not explicitly specified in the BUILD file are included; otherwise they are omitted. This option is applicable to -- output=proto
Tags: terminal_output
--[no]proto:flatten_selects default: "true"
If enabled, configurable attributes created by select() are flattened. For list types the flattened representation is a list containing each value of the select map exactly once. Scalar types are flattened to null.
Tags: build_file_semantics
--[no]proto:locations default: "true"
Whether to output location information in proto output at all.
Tags: terminal_output
--proto:output_rule_attrs=<comma-separated list of options> default: "all"
Comma separated list of attributes to include in output. Defaults to all attributes. Set to empty string to not output any attribute. This option is applicable to --output=proto.
Tags: terminal_output
--[no]proto:rule_inputs_and_outputs default: "true"
Whether or not to populate the rule_input and rule_output fields.
Tags: terminal_output
--[no]relative_locations default: "false"
If true, the location of BUILD files in xml and proto outputs will be relative. By default, the location output is an absolute path and will not be consistent across machines. You can set this option to true to have a consistent result across machines.
Tags: terminal_output
--[no]skyframe_state default: "false"
Without performing extra analysis, dump the current Action Graph from Skyframe. Note: Specifying a target with --skyframe_state is currently not supported. This flag is only available with --output=proto or --output=textproto.
Tags: terminal_output
--[no]tool_deps default: "true"
Query: If disabled, dependencies on 'host configuration' or ' execution' targets will not be included in the dependency graph over which the query operates. A 'host configuration' dependency edge, such as the one from any 'proto_library' rule to the Protocol Compiler, usually points to a tool executed during the build rather than a part of the same ' target' program. Cquery: If disabled, filters out all configured targets which cross a host or execution transition from the top-level target that discovered this configured target. That means if the top-level target is in the target configuration, only configured targets also in the target configuration will be returned. If the top-level target is in the host configuration, only host configured targets will be returned.
Tags: build_file_semantics
--universe_scope=<comma-separated list of options> default: ""
A comma-separated set of target patterns (additive and subtractive). The query may be performed in the universe defined by the transitive closure of the specified targets. This option is used for the query and cquery commands. For cquery, the input to this option is the targets all answers are built under and so this option may affect configurations and transitions. If this option is not specified, the top-level targets are assumed to be the targets parsed from the query expression. Note: For cquery, not specifying this option may cause the build to break if targets parsed from the query expression are not buildable with top-level options.
Tags: loading_and_analysis
Options that control build execution:
Whether to make direct file system calls to create symlink trees
Tags: loading_and_analysis, execution, experimental
--[no]experimental_strict_fileset_output default: "false"
If this option is enabled, filesets will treat all output artifacts as regular files. They will not traverse directories or be sensitive to symlinks.
Tags: execution
--modify_execution_info=<regex=[+-]key,regex=[+-]key,...> default: ""
Add or remove keys from an action's execution info based on action mnemonic. Applies only to actions which support execution info. Many common actions support execution info, e.g. Genrule, CppCompile, Javac, SkylarkAction, TestRunner. When specifying multiple values, order matters because many regexes may apply to the same mnemonic. Syntax: "regex=[+-]key,[+-]key,...". Examples: '.*=+x,.*=-y,.*=+z' adds 'x' and 'z' to, and removes 'y' from, the execution info for all actions. 'Genrule=+requires-x' adds 'requires-x' to the execution info for all Genrule actions. '(?!Genrule).*=-requires-x' removes 'requires-x' from the execution info for all non-Genrule actions.
Tags: execution, affects_outputs, loading_and_analysis
--persistent_android_resource_processor
Enable the persistent Android resource processor by using workers.
Expands to:
  --internal_persistent_busybox_tools
  --strategy=AaptPackage=worker
  --strategy=AndroidResourceParser=worker
  --strategy=AndroidResourceValidator=worker
  --strategy=AndroidResourceCompiler=worker
  --strategy=RClassGenerator=worker
  --strategy=AndroidResourceLink=worker
  --strategy=AndroidAapt2=worker
  --strategy=AndroidAssetMerger=worker
  --strategy=AndroidResourceMerger=worker
  --strategy=AndroidCompiledResourceMerger=worker

Tags: host_machine_resource_optimizations, execution
Options that configure the toolchain used for action execution:
--android_aapt=<aapt or aapt2> default: "aapt2"
Selects the version of androidAaptVersion to use for android_binary rules.Flag to help the test and transition to aapt2.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_compiler=<a string> default: see description
The Android target compiler.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_crosstool_top=<a build target label> default: "//external:android/crosstool"
The location of the C++ compiler used for Android builds.
Tags: affects_outputs, changes_inputs, loading_and_analysis, loses_incremental_state
--android_grte_top=<a label> default: see description
The Android target grte_top.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--android_manifest_merger=<legacy, android or force_android> default: "android"
Selects the manifest merger to use for android_binary rules. Flag to help thetransition to the Android manifest merger from the legacy merger.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_sdk=<a build target label> default: "@bazel_tools//tools/android:sdk"
Specifies Android SDK/platform that is used to build Android applications.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--apple_compiler=<a string> default: see description
The Apple target compiler. Useful for selecting variants of a toolchain (e.g. xcode-beta).
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--apple_crosstool_top=<a build target label> default: "@bazel_tools//tools/cpp:toolchain"
The label of the crosstool package to be used in Apple and Objc rules and their dependencies.
Tags: loses_incremental_state, changes_inputs
--apple_grte_top=<a build target label> default: see description
The Apple target grte_top.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--apple_sdk=<a build target label> default: see description
Location of target that will provide the appropriate Apple SDK for the current build configuration.
Tags: affects_outputs, loading_and_analysis
--cc_output_directory_tag=<a string> default: ""
Specifies a suffix to be added to the configuration directory.
Tags: affects_outputs
--compiler=<a string> default: see description
The C++ compiler to use for compiling the target.
Tags: loading_and_analysis, execution
--coverage_report_generator=<a build target label> default: "@bazel_tools//tools/test:coverage_report_generator"
Location of the binary that is used to generate coverage reports. This must currently be a filegroup that contains a single file, the binary. Defaults to '//tools/test:coverage_report_generator'.
Tags: changes_inputs, affects_outputs, loading_and_analysis
--coverage_support=<a build target label> default: "@bazel_tools//tools/test:coverage_support"
Location of support files that are required on the inputs of every test action that collects code coverage. Defaults to '//tools/test: coverage_support'.
Tags: changes_inputs, affects_outputs, loading_and_analysis
--crosstool_top=<a build target label> default: "@bazel_tools//tools/cpp:toolchain"
The label of the crosstool package to be used for compiling C++ code.
Tags: loading_and_analysis, changes_inputs, affects_outputs
--custom_malloc=<a build target label> default: see description
Specifies a custom malloc implementation. This setting overrides malloc attributes in build rules.
Tags: changes_inputs, affects_outputs
--enabled_toolchain_types=<a build target label> default: ""
Enable toolchain resolution for the given toolchain type, if the rules used support that. This does not directly change the core Bazel machinery, but is a signal to participating rule implementations that toolchain resolution should be used.
Tags: loading_and_analysis
--experimental_add_exec_constraints_to_targets=<a '<RegexFilter>=<label1>[,<label2>,...]' assignment> multiple uses are accumulated
List of comma-separated regular expressions, each optionally prefixed by - (negative expression), assigned (=) to a list of comma-separated constraint value targets. If a target matches no negative expression and at least one positive expression its toolchain resolution will be performed as if it had declared the constraint values as execution constraints. Example: //demo,- test=@platforms//cpus:x86_64 will add 'x86_64' to any target under //demo except for those whose name contains 'test'.
Tags: loading_and_analysis
--[no]experimental_enable_objc_cc_deps default: "true"
Allows objc_* rules to depend on cc_library and causes any objc dependencies to be built with --cpu set to "ios_<--ios_cpu>" for any values in --ios_multi_cpu.
Tags: loading_and_analysis, incompatible_change
--extra_execution_platforms=<comma-separated list of options> multiple uses are accumulated
The platforms that are available as execution platforms to run actions. Platforms can be specified by exact target, or as a target pattern. These platforms will be considered before those declared in the WORKSPACE file by register_execution_platforms().
Tags: execution
--extra_toolchains=<comma-separated list of options> multiple uses are accumulated
The toolchain rules to be considered during toolchain resolution. Toolchains can be specified by exact target, or as a target pattern. These toolchains will be considered before those declared in the WORKSPACE file by register_toolchains().
Tags: affects_outputs, changes_inputs, loading_and_analysis
--grte_top=<a label> default: see description
A label to a checked-in libc library. The default value is selected by the crosstool toolchain, and you almost never need to override it.
Tags: action_command_lines, affects_outputs
--host_compiler=<a string> default: see description
The C++ compiler to use for host compilation. It is ignored if -- host_crosstool_top is not set.
Tags: loading_and_analysis, execution
--host_crosstool_top=<a build target label> default: see description
By default, the --crosstool_top and --compiler options are also used for the host configuration. If this flag is provided, Bazel uses the default libc and compiler for the given crosstool_top.
Tags: loading_and_analysis, changes_inputs, affects_outputs
--host_grte_top=<a label> default: see description
If specified, this setting overrides the libc top-level directory (--grte_top) for the host configuration.
Tags: action_command_lines, affects_outputs
--host_platform=<a build target label> default: ""
The label of a platform rule that describes the host system.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--[no]incompatible_disable_expand_if_all_available_in_flag_set default: "true"
If true, Bazel will not allow specifying expand_if_all_available in flag_sets (see https://github.com/bazelbuild/bazel/issues/7008 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_dont_enable_host_nonhost_crosstool_features default: "true"
If true, Bazel will not enable 'host' and 'nonhost' features in the c++ toolchain (see https://github.com/bazelbuild/bazel/issues/7407 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_make_thinlto_command_lines_standalone default: "true"
If true, Bazel will not reuse C++ link action command lines for lto indexing command lines (see https://github.com/bazelbuild/bazel/issues/6791 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_prohibit_aapt1 default: "true"
End support for aapt in Android rules. To resolve issues when migrating your app to build with aapt2, see https://developer.android.com/studio/command- line/aapt2#aapt2_changes
Tags: loses_incremental_state, affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_cpu_and_compiler_attributes_from_cc_toolchain default: "true"
If true, Bazel will complain when cc_toolchain.cpu and cc_toolchain.compiler attribtues are set (see https://github.com/bazelbuild/bazel/issues/7075 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_legacy_whole_archive default: "true"
If true, Bazel will not link library dependencies as whole archive by default (see https://github.com/bazelbuild/bazel/issues/7362 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_require_ctx_in_configure_features default: "true"
If true, Bazel will require 'ctx' parameter in to cc_common. configure_features (see https://github.com/bazelbuild/bazel/issues/7793 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_strict_objc_module_maps default: "false"
Propagates Objective-C module maps only to direct dependencies in the ' objc' provider, not to all transitive dependencies.
Tags: changes_inputs, loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]interface_shared_objects default: "true"
Use interface shared objects if supported by the toolchain. All ELF toolchains currently support this setting.
Tags: loading_and_analysis, affects_outputs, affects_outputs
--ios_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the iOS SDK to use to build iOS applications. If unspecified, uses default iOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--macos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the macOS SDK to use to build macOS applications. If unspecified, uses default macOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--minimum_os_version=<a string> default: see description
The minimum OS version which your compilation targets.
Tags: loading_and_analysis, affects_outputs
--objc_header_scanner_tool=<a build target label> default: "@bazel_tools//tools/objc:header_scanner"
Location of tool to scan Objective-C code for inclusions and output a . headers_list file.
Tags: changes_inputs
--platform_mappings=<a relative path> default: ""
The location of a mapping file that describes which platform to use if none is set or which flags to set when a platform already exists. Must be relative to the main workspace root. Defaults to 'platform_mappings' (a file directly under the workspace root).
Tags: affects_outputs, changes_inputs, loading_and_analysis
--platforms=<a build target label> default: ""
The labels of the platform rules describing the target platforms for the current command.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--python2_path=<a string> default: see description
Deprecated, no-op. Disabled by `--incompatible_use_python_toolchains`.
Tags: no_op, deprecated
--python3_path=<a string> default: see description
Deprecated, no-op. Disabled by `--incompatible_use_python_toolchains`.
Tags: no_op, deprecated
--python_path=<a string> default: see description
The absolute path of the Python interpreter invoked to run Python targets on the target platform. Deprecated; disabled by -- incompatible_use_python_toolchains.
Tags: loading_and_analysis, affects_outputs
--python_top=<a build target label> default: see description
The label of a py_runtime representing the Python interpreter invoked to run Python targets on the target platform. Deprecated; disabled by -- incompatible_use_python_toolchains.
Tags: loading_and_analysis, affects_outputs
--target_platform_fallback=<a build target label> default: "@bazel_tools//platforms:target_platform"
The label of a platform rule that should be used if no target platform is set and no platform mapping matches the current set of flags.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--tvos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the tvOS SDK to use to build tvOS applications. If unspecified, uses default tvOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--watchos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the watchOS SDK to use to build watchOS applications. If unspecified, uses default watchOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--xcode_version=<a string> default: see description
If specified, uses Xcode of the given version for relevant build actions. If unspecified, uses the executor default version of Xcode.
Tags: loses_incremental_state
--xcode_version_config=<a build target label> default: "@local_config_xcode//:host_xcodes"
The label of the xcode_config rule to be used for selecting the Xcode version in the build configuration.
Tags: loses_incremental_state, loading_and_analysis
Options that control the output of the command:
--[no]apple_enable_auto_dsym_dbg default: "false"
Whether to force enable generating debug symbol(.dSYM) file(s) for dbg builds.
Tags: affects_outputs, action_command_lines
--[no]apple_generate_dsym default: "false"
Whether to generate debug symbol(.dSYM) file(s).
Tags: affects_outputs, action_command_lines
If true, build runfiles symlink forests for all targets. If false, write only manifests when possible.
Tags: affects_outputs
--[no]build_runfile_manifests default: "true"
If true, write runfiles manifests for all targets. If false, omit them.
Tags: affects_outputs
--[no]build_test_dwp default: "false"
If enabled, when building C++ tests statically and with fission the .dwp file for the test binary will be automatically built as well.
Tags: loading_and_analysis, affects_outputs
--cc_proto_library_header_suffixes=<comma-separated list of options> default: ".pb.h"
Sets the prefixes of header files that a cc_proto_library creates.
Tags: affects_outputs, loading_and_analysis
--cc_proto_library_source_suffixes=<comma-separated list of options> default: ".pb.cc"
Sets the prefixes of source files that a cc_proto_library creates.
Tags: affects_outputs, loading_and_analysis
--[no]enable_apple_binary_native_protos default: "true"
If set, apple_binary will generate and link objc protos into the output binary.
Tags: affects_outputs, incompatible_change
--[no]experimental_objc_enable_module_maps default: "false"
Enables module map generation and interpretation.
Tags: action_command_lines
--[no]experimental_proto_extra_actions default: "false"
Run extra actions for alternative Java api versions in a proto_library.
Tags: affects_outputs, loading_and_analysis, experimental
--[no]experimental_save_feature_state default: "false"
Save the state of enabled and requested feautres as an output of compilation.
Tags: affects_outputs, experimental
--fission=<a set of compilation modes> default: "no"
Specifies which compilation modes use fission for C++ compilations and links. May be any combination of {'fastbuild', 'dbg', 'opt'} or the special values 'yes' to enable all modes and 'no' to disable all modes.
Tags: loading_and_analysis, action_command_lines, affects_outputs
--[no]legacy_external_runfiles default: "true"
If true, build runfiles symlink forests for external repositories under . runfiles/wsname/external/repo (in addition to .runfiles/repo).
Tags: affects_outputs
--[no]objc_generate_linkmap default: "false"
Specifies whether to generate a linkmap file.
Tags: affects_outputs
--[no]save_temps default: "false"
If set, temporary outputs from gcc will be saved. These include .s files (assembler code), .i files (preprocessed C) and .ii files (preprocessed C++).
Tags: affects_outputs
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--action_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies the set of environment variables available to actions. Variables can be either specified by name, in which case the value will be taken from the invocation environment, or by the name=value pair which sets the value independent of the invocation environment. This option can be used multiple times; for options given for the same variable, the latest wins, options for different variables accumulate.
Tags: action_command_lines
--android_cpu=<a string> default: "armeabi-v7a"
The Android target CPU.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]android_databinding_use_v3_4_args default: "false"
Use android databinding v2 with 3.4.0 argument
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--android_dynamic_mode=<off, default or fully> default: "off"
Determines whether C++ deps of Android rules will be linked dynamically when a cc_binary does not explicitly create a shared library. 'default' means bazel will choose whether to link dynamically. 'fully' means all libraries will be linked dynamically. 'off' means that all libraries will be linked in mostly static mode.
Tags: affects_outputs, loading_and_analysis
--android_manifest_merger_order=<alphabetical, alphabetical_by_configuration or dependency> default: "alphabetical"
Sets the order of manifests passed to the manifest merger for Android binaries. ALPHABETICAL means manifests are sorted by path relative to the execroot. ALPHABETICAL_BY_CONFIGURATION means manifests are sorted by paths relative to the configuration directory within the output directory. DEPENDENCY means manifests are ordered with each library's manifest coming before the manifests of its dependencies.
Tags: action_command_lines, execution
--[no]android_resource_shrinking default: "false"
Enables resource shrinking for android_binary APKs that use ProGuard.
Tags: affects_outputs, loading_and_analysis
--apple_bitcode=<none, embedded_markers or embedded> default: "none"
Specify the Apple bitcode mode for compile steps. Values: 'none', ' embedded_markers', 'embedded'.
Tags: loses_incremental_state
--[no]build_python_zip default: "auto"
Build python executable zip; on on Windows, off on other platforms
Tags: affects_outputs
--[no]collect_code_coverage default: "false"
If specified, Bazel will instrument code (using offline instrumentation where possible) and will collect coverage information during tests. Only targets that match --instrumentation_filter will be affected. Usually this option should not be specified directly - 'bazel coverage' command should be used instead.
Tags: affects_outputs
--compilation_mode=<fastbuild, dbg or opt> [-c] default: "fastbuild"
Specify the mode the binary will be built in. Values: 'fastbuild', ' dbg', 'opt'.
Tags: affects_outputs, action_command_lines
--conlyopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C source files.
Tags: action_command_lines, affects_outputs
--copt=<a string> multiple uses are accumulated
Additional options to pass to gcc.
Tags: action_command_lines, affects_outputs
--cpu=<a string> default: ""
The target CPU.
Tags: changes_inputs, affects_outputs
--cs_fdo_absolute_path=<a string> default: see description
Use CSFDO profile information to optimize compilation. Specify the absolute path name of the zip file containing the profile file, a raw or an indexed LLVM profile file.
Tags: affects_outputs
--cs_fdo_instrument=<a string> default: see description
Generate binaries with context sensitive FDO instrumentation. With Clang/LLVM compiler, it also accepts the directory name under which the raw profile file (s) will be dumped at runtime.
Tags: affects_outputs
--cs_fdo_profile=<a build target label> default: see description
The cs_fdo_profile representing the context sensitive profile to be used for optimization.
Tags: affects_outputs
--cxxopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C++ source files.
Tags: action_command_lines, affects_outputs
--define=<a 'name=value' assignment> multiple uses are accumulated
Each --define option specifies an assignment for a build variable.
Tags: changes_inputs, affects_outputs
--dynamic_mode=<off, default or fully> default: "default"
Determines whether C++ binaries will be linked dynamically. 'default' means Bazel will choose whether to link dynamically. 'fully' means all libraries will be linked dynamically. 'off' means that all libraries will be linked in mostly static mode.
Tags: loading_and_analysis, affects_outputs
--[no]enable_fdo_profile_absolute_path default: "true"
If set, use of fdo_absolute_profile_path will raise an error.
Tags: affects_outputs
--[no]enable_runfiles default: "auto"
Enable runfiles symlink tree; By default, it's off on Windows, on on other platforms.
Tags: affects_outputs
--experimental_action_listener=<a build target label> multiple uses are accumulated
Use action_listener to attach an extra_action to existing build actions.
Tags: execution, experimental
--[no]experimental_android_compress_java_resources default: "false"
Compress Java resources in APKs
Tags: affects_outputs, loading_and_analysis, experimental
--[no]experimental_android_databinding_v2 default: "false"
Use android databinding v2
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--[no]experimental_android_resource_shrinking default: "false"
Enables resource shrinking for android_binary APKs that use ProGuard.
Tags: affects_outputs, loading_and_analysis
--[no]experimental_android_rewrite_dexes_with_rex default: "false"
use rex tool to rewrite dex files
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--experimental_objc_fastbuild_options=<comma-separated list of options> default: "-O0,-DDEBUG=1"
Uses these strings as objc fastbuild compiler options.
Tags: action_command_lines
--[no]experimental_omitfp default: "false"
If true, use libunwind for stack unwinding, and compile with -fomit-frame- pointer and -fasynchronous-unwind-tables.
Tags: action_command_lines, affects_outputs, experimental
--[no]experimental_use_llvm_covmap default: "false"
If specified, Bazel will generate llvm-cov coverage map information rather than gcov when collect_code_coverage is enabled.
Tags: changes_inputs, affects_outputs, loading_and_analysis, experimental
--fat_apk_cpu=<comma-separated list of options> default: "armeabi-v7a"
Setting this option enables fat APKs, which contain native binaries for all specified target architectures, e.g., --fat_apk_cpu=x86,armeabi-v7a. If this flag is specified, then --android_cpu is ignored for dependencies of android_binary rules.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--fdo_instrument=<a string> default: see description
Generate binaries with FDO instrumentation. With Clang/LLVM compiler, it also accepts the directory name under which the raw profile file(s) will be dumped at runtime.
Tags: affects_outputs
--fdo_optimize=<a string> default: see description
Use FDO profile information to optimize compilation. Specify the name of the zip file containing the .gcda file tree, or an afdo file containing an auto profile. This flag also accepts files specified as labels, for example //foo/bar:file.afdo. Such labels must refer to input files; you may need to add an exports_files directive to the corresponding package to make the file visible to Bazel. It also accepts a raw or an indexed LLVM profile file. This flag will be superseded by fdo_profile rule.
Tags: affects_outputs
--fdo_prefetch_hints=<a build target label> default: see description
Use cache prefetch hints.
Tags: affects_outputs
--fdo_profile=<a build target label> default: see description
The fdo_profile representing the profile to be used for optimization.
Tags: affects_outputs
--features=<a string> multiple uses are accumulated
The given features will be enabled or disabled by default for all packages. Specifying -<feature> will disable the feature globally. Negative features always override positive ones. This flag is used to enable rolling out default feature changes without a Bazel release.
Tags: changes_inputs, affects_outputs
--[no]force_pic default: "false"
If enabled, all C++ compilations produce position-independent code ("- fPIC"), links prefer PIC pre-built libraries over non-PIC libraries, and links produce position-independent executables ("-pie").
Tags: loading_and_analysis, affects_outputs
--force_python=<PY2 or PY3> default: see description
Deprecated alias for `--python_version`. Disabled by `-- incompatible_remove_old_python_version_api`.
Tags: loading_and_analysis, affects_outputs
--host_compilation_mode=<fastbuild, dbg or opt> default: "opt"
Specify the mode the tools used during the build will be built in. Values: ' fastbuild', 'dbg', 'opt'.
Tags: affects_outputs, action_command_lines
--host_conlyopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C source files for host tools.
Tags: action_command_lines, affects_outputs
--host_copt=<a string> multiple uses are accumulated
Additional options to pass to gcc for host tools.
Tags: action_command_lines, affects_outputs
--host_cpu=<a string> default: ""
The host CPU.
Tags: changes_inputs, affects_outputs
--host_cxxopt=<a string> multiple uses are accumulated
Additional options to pass to gcc for host tools.
Tags: action_command_lines, affects_outputs
--host_force_python=<PY2 or PY3> default: see description
Overrides the Python version for the host configuration. Can be "PY2" or "PY3".
Tags: loading_and_analysis, affects_outputs
--host_linkopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when linking host tools.
Tags: action_command_lines, affects_outputs
--host_swiftcopt=<a string> multiple uses are accumulated
Additional options to pass to swiftc for host tools.
Tags: action_command_lines, affects_outputs
--[no]incompatible_merge_genfiles_directory default: "true"
If true, the genfiles directory is folded into the bin directory.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_platforms_repo_for_constraints default: "false"
If true, constraint settings from @bazel_tools are removed.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]instrument_test_targets default: "false"
When coverage is enabled, specifies whether to consider instrumenting test rules. When set, test rules included by --instrumentation_filter are instrumented. Otherwise, test rules are always excluded from coverage instrumentation.
Tags: affects_outputs
--instrumentation_filter=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths> default: "-/javatests[/:],-/test/java[/:]"
When coverage is enabled, only rules with names included by the specified regex- based filter will be instrumented. Rules prefixed with '-' are excluded instead. Note that only non-test rules are instrumented unless -- instrument_test_targets is enabled.
Tags: affects_outputs
--ios_cpu=<a string> default: "x86_64"
Specifies to target CPU of iOS compilation.
Tags: no_op, deprecated
--ios_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible iOS version for target simulators and devices. If unspecified, uses 'ios_sdk_version'.
Tags: loses_incremental_state
--ios_multi_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures to build an ios_application with. The result is a universal binary containing all specified architectures.
Tags: loses_incremental_state, loading_and_analysis
--[no]legacy_whole_archive default: "true"
Deprecated, superseded by --incompatible_remove_legacy_whole_archive (see https: //github.com/bazelbuild/bazel/issues/7362 for details). When on, use --whole- archive for cc_binary rules that have linkshared=1 and either linkstatic=1 or '-static' in linkopts. This is for backwards compatibility only. A better alternative is to use alwayslink=1 where required.
Tags: action_command_lines, affects_outputs, deprecated
--linkopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when linking.
Tags: action_command_lines, affects_outputs
--ltobackendopt=<a string> multiple uses are accumulated
Additional option to pass to the LTO backend step (under --features=thin_lto).
Tags: action_command_lines, affects_outputs
--ltoindexopt=<a string> multiple uses are accumulated
Additional option to pass to the LTO indexing step (under --features=thin_lto).
Tags: action_command_lines, affects_outputs
--macos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple macOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--macos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible macOS version for targets. If unspecified, uses ' macos_sdk_version'.
Tags: loses_incremental_state
--[no]objc_debug_with_GLIBCXX default: "false"
If set, and compilation mode is set to 'dbg', define GLIBCXX_DEBUG, GLIBCXX_DEBUG_PEDANTIC and GLIBCPP_CONCEPT_CHECKS.
Tags: action_command_lines
--[no]objc_enable_binary_stripping default: "false"
Whether to perform symbol and dead-code strippings on linked binaries. Binary strippings will be performed if both this flag and --compilation_mode=opt are specified.
Tags: action_command_lines
--objccopt=<a string> multiple uses are accumulated
Additional options to pass to Objective C compilation.
Tags: action_command_lines
--per_file_copt=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths followed by an @ and a comma separated list of options> multiple uses are accumulated
Additional options to selectively pass to gcc when compiling certain files. This option can be passed multiple times. Syntax: regex_filter@option_1, option_2,...,option_n. Where regex_filter stands for a list of include and exclude regular expression patterns (Also see --instrumentation_filter). option_1 to option_n stand for arbitrary command line options. If an option contains a comma it has to be quoted with a backslash. Options can contain @. Only the first @ is used to split the string. Example: --per_file_copt=//foo/. *\.cc,-//foo/bar\.cc@-O0 adds the -O0 command line option to the gcc command line of all cc files in //foo/ except bar.cc.
Tags: action_command_lines, affects_outputs
--per_file_ltobackendopt=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths followed by an @ and a comma separated list of options> multiple uses are accumulated
Additional options to selectively pass to LTO backend (under -- features=thin_lto) when compiling certain backend objects. This option can be passed multiple times. Syntax: regex_filter@option_1,option_2,...,option_n. Where regex_filter stands for a list of include and exclude regular expression patterns. option_1 to option_n stand for arbitrary command line options. If an option contains a comma it has to be quoted with a backslash. Options can contain @. Only the first @ is used to split the string. Example: -- per_file_ltobackendopt=//foo/.*\.o,-//foo/bar\.o@-O0 adds the -O0 command line option to the LTO backend command line of all o files in //foo/ except bar.o.
Tags: action_command_lines, affects_outputs
--platform_suffix=<a string> default: see description
Specifies a suffix to be added to the configuration directory.
Tags: loses_incremental_state, affects_outputs, loading_and_analysis
--repo_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies additional environment variables to be available only for repository rules. Note that repository rules see the full environment anyway, but in this way configuration information can be passed to repositories through options without invalidating the action graph.
Tags: action_command_lines
--run_under=<a prefix in front of command> default: see description
Prefix to insert in front of command before running. Examples: --run_under=valgrind --run_under=strace --run_under='strace -c' --run_under='valgrind --quiet --num-callers=20' --run_under=//package:target --run_under='//package:target --options'
Tags: action_command_lines
--[no]share_native_deps default: "true"
If true, native libraries that contain identical functionality will be shared among different targets
Tags: loading_and_analysis, affects_outputs
--[no]stamp default: "false"
Stamp binaries with the date, username, hostname, workspace information, etc.
Tags: affects_outputs
--strip=<always, sometimes or never> default: "sometimes"
Specifies whether to strip binaries and shared libraries (using "-Wl,-- strip-debug"). The default value of 'sometimes' means strip iff -- compilation_mode=fastbuild.
Tags: affects_outputs
--stripopt=<a string> multiple uses are accumulated
Additional options to pass to strip when generating a '<name>. stripped' binary.
Tags: action_command_lines, affects_outputs
--swiftcopt=<a string> multiple uses are accumulated
Additional options to pass to Swift compilation.
Tags: action_command_lines
--tvos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple tvOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--tvos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible tvOS version for target simulators and devices. If unspecified, uses 'tvos_sdk_version'.
Tags: loses_incremental_state
--watchos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple watchOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--watchos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible watchOS version for target simulators and devices. If unspecified, uses 'watchos_sdk_version'.
Tags: loses_incremental_state
--xbinary_fdo=<a build target label> default: see description
Use XbinaryFDO profile information to optimize compilation. Specify the name of default cross binary profile. When the option is used together with -- fdo_instrument/--fdo_optimize/--fdo_profile, those options will always prevail as if xbinary_fdo is never specified.
Tags: affects_outputs
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--auto_cpu_environment_group=<a build target label> default: ""
Declare the environment_group to use for automatically mapping cpu values to target_environment values.
Tags: changes_inputs, loading_and_analysis, experimental
--[no]check_licenses default: "false"
Check that licensing constraints imposed by dependent packages do not conflict with distribution modes of the targets being built. By default, licenses are not checked.
Tags: build_file_semantics
--[no]check_visibility default: "true"
If disabled, visibility errors are demoted to warnings.
Tags: build_file_semantics
--[no]desugar_for_android default: "true"
Whether to desugar Java 8 bytecode before dexing.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]enforce_constraints default: "true"
Checks the environments each target is compatible with and reports errors if any target has dependencies that don't support the same environments
Tags: build_file_semantics
--[no]experimental_allow_android_library_deps_without_srcs default: "false"
Flag to help transition from allowing to disallowing srcs-less android_library rules with deps. The depot needs to be cleaned up to roll this out by default.
Tags: eagerness_to_exit, loading_and_analysis
--[no]experimental_check_desugar_deps default: "true"
Whether to double-check correct desugaring at Android binary level.
Tags: eagerness_to_exit, loading_and_analysis, experimental
--[no]experimental_desugar_java8_libs default: "false"
Whether to include supported Java 8 libraries in apps for legacy devices.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--experimental_import_deps_checking=<off, warning or error> default: "OFF"
When enabled, check whether the dependencies of an aar_import are complete. This enforcement can break the build, or can just result in warnings.
Tags: loading_and_analysis
--[no]experimental_java_proto_add_allowed_public_imports default: "false"
If true, add --allowed_public_imports to the java compile actions.
Tags: affects_outputs, loading_and_analysis, experimental
--experimental_strict_java_deps=<off, warn, error, strict or default> default: "default"
If true, checks that a Java target explicitly declares all directly used targets as dependencies.
Tags: build_file_semantics, eagerness_to_exit
--[no]incompatible_disable_native_android_rules default: "false"
If enabled, direct usage of the native Android rules is disabled. Please use the Starlark Android rules from https://github.com/bazelbuild/rules_android
Tags: eagerness_to_exit, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_validate_top_level_header_inclusions default: "false"
If true, Bazel will also validate top level directory header inclusions (see https://github.com/bazelbuild/bazel/issues/10047 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]strict_filesets default: "false"
If this option is enabled, filesets crossing package boundaries are reported as errors. It does not work when check_fileset_dependencies_recursively is disabled.
Tags: build_file_semantics, eagerness_to_exit
--strict_proto_deps=<off, warn, error, strict or default> default: "error"
Unless OFF, checks that a proto_library target explicitly declares all directly used targets as dependencies.
Tags: build_file_semantics, eagerness_to_exit, incompatible_change
--[no]strict_system_includes default: "false"
If true, headers found through system include paths (-isystem) are also required to be declared.
Tags: loading_and_analysis, eagerness_to_exit
--target_environment=<a build target label> multiple uses are accumulated
Declares this build's target environment. Must be a label reference to an "environment" rule. If specified, all top-level targets must be compatible with this environment.
Tags: changes_inputs
Options that affect the signing outputs of a build:
--apk_signing_method=<v1, v2 or v1_v2> default: "v1_v2"
Implementation to use to sign APKs
Tags: action_command_lines, affects_outputs, loading_and_analysis
--default_ios_provisioning_profile=<a build target label> default: ""

Tags: changes_inputs
--[no]device_debug_entitlements default: "true"
If set, and compilation mode is not 'opt', objc apps will include debug entitlements when signing.
Tags: changes_inputs
--ios_signing_cert_name=<a string> default: see description
Certificate name to use for iOS signing. If not set will fall back to provisioning profile. May be the certificate's keychain identity preference or (substring) of the certificate's common name, as per codesign's man page (SIGNING IDENTITIES).
Tags: action_command_lines
This option affects semantics of the Starlark language or the build API accessible to BUILD files, .bzl files, or WORKSPACE files.:
--[no]incompatible_allow_python_version_transitions default: "true"
If true, Python rules use the new PY2/PY3 version semantics. For more information, see the documentation for `py_binary`'s `python_version` attribute.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_legacy_py_provider default: "true"
If set to true, native Python rules will neither produce nor consume the legacy "py" provider. Use PyInfo instead. Under this flag, passing the legacy provider to a Python target will be an error.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_old_python_version_api default: "true"
If true, disables use of the `--force_python` flag and the `default_python_version` attribute for `py_binary` and `py_test`. Use the `-- python_version` flag and `python_version` attribute instead, which have exactly the same meaning. This flag also disables `select()`-ing over `-- host_force_python`.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
Options that govern the behavior of the test environment or test runner:
--[no]allow_analysis_failures default: "false"
If true, an analysis failure of a rule target results in the target's propagation of an instance of AnalysisFailureInfo containing the error description, instead of resulting in a build failure.
Tags: loading_and_analysis, experimental
--analysis_testing_deps_limit=<an integer> default: "500"
Sets the maximum number of transitive dependencies through a rule attribute with a for_analysis_testing configuration transition. Exceeding this limit will result in a rule error.
Tags: loading_and_analysis
--[no]break_build_on_parallel_dex2oat_failure default: "false"
If true dex2oat action failures will cause the build to break instead of executing dex2oat during test runtime.
Tags: loading_and_analysis, experimental
--[no]experimental_android_use_parallel_dex2oat default: "false"
Use dex2oat in parallel to possibly speed up android_test.
Tags: loading_and_analysis, host_machine_resource_optimizations, experimental
--[no]incompatible_windows_native_test_wrapper default: "true"
On Windows: if true, uses the C++ test wrapper to run tests, otherwise uses tools/test/test-setup.sh as on other platforms. On other platforms: no-op.
Tags: loading_and_analysis, test_runner, incompatible_change, triggered_by_all_incompatible_changes
--[no]ios_memleaks default: "false"
Enable checking for memory leaks in ios_test targets.
Tags: action_command_lines
--ios_simulator_device=<a string> default: see description
The device to simulate when running an iOS application in the simulator, e.g. 'iPhone 6'. You can get a list of devices by running 'xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--ios_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of iOS to run on the simulator when running or testing. This is ignored for ios_test rules if a target device is specified in the rule.
Tags: test_runner
--runs_per_test=<a positive integer or test_regex@runs. This flag may be passed more than once> multiple uses are accumulated
Specifies number of times to run each test. If any of those attempts fail for any reason, the whole test would be considered failed. Normally the value specified is just an integer. Example: --runs_per_test=3 will run all tests 3 times. Alternate syntax: regex_filter@runs_per_test. Where runs_per_test stands for an integer value and regex_filter stands for a list of include and exclude regular expression patterns (Also see --instrumentation_filter). Example: -- runs_per_test=//foo/.*,-//foo/bar/.*@3 runs all tests in //foo/ except those under foo/bar three times. This option can be passed multiple times.
--test_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies additional environment variables to be injected into the test runner environment. Variables can be either specified by name, in which case its value will be read from the Bazel client environment, or by the name=value pair. This option can be used multiple times to specify several variables. Used only by the 'bazel test' command.
Tags: test_runner
--test_timeout=<a single integer or comma-separated list of 4 integers> default: "-1"
Override the default test timeout values for test timeouts (in secs). If a single positive integer value is specified it will override all categories. If 4 comma-separated integers are specified, they will override the timeouts for short, moderate, long and eternal (in that order). In either form, a value of -1 tells bazel to use its default timeouts for that category.
--tvos_simulator_device=<a string> default: see description
The device to simulate when running an tvOS application in the simulator, e.g. 'Apple TV 1080p'. You can get a list of devices by running 'xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--tvos_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of tvOS to run on the simulator when running or testing.
Tags: test_runner
--watchos_simulator_device=<a string> default: see description
The device to simulate when running an watchOS application in the simulator, e. g. 'Apple Watch - 38mm'. You can get a list of devices by running ' xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--watchos_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of watchOS to run on the simulator when running or testing.
Tags: test_runner
Options relating to query output and semantics:
--aspect_deps=<off, conservative or precise> default: "conservative"
How to resolve aspect dependencies when the output format is one of {xml,proto, record}. 'off' means no aspect dependencies are resolved, ' conservative' (the default) means all declared aspect dependencies are added regardless of whether they are given the rule class of direct dependencies, 'precise' means that only those aspects are added that are possibly active given the rule class of the direct dependencies. Note that precise mode requires loading other packages to evaluate a single target thus making it slower than the other modes. Also note that even precise mode is not completely precise: the decision whether to compute an aspect is decided in the analysis phase, which is not run during 'bazel query'.
Tags: build_file_semantics
--[no]implicit_deps default: "true"
If enabled, implicit dependencies will be included in the dependency graph over which the query operates. An implicit dependency is one that is not explicitly specified in the BUILD file but added by bazel.
Tags: build_file_semantics
--[no]include_artifacts default: "true"
Includes names of the action inputs and outputs in the output (potentially large).
Tags: terminal_output
--[no]include_aspects default: "false"
Whether to include aspect generated actions in the output.
Tags: terminal_output
--[no]include_commandline default: "true"
Includes the content of the action command lines in the output (potentially large).
Tags: terminal_output
--[no]include_param_files default: "false"
Include the content of the param files used in the command (potentially large). Note: Enabling this flag will automatically enable the --include_commandline flag.
Tags: terminal_output
--[no]incompatible_proto_output_v2 default: "false"
Whether aquery should print proto/textproto results with proto v2 (with ids in uint64 instead of string).
Tags: terminal_output, incompatible_change, triggered_by_all_incompatible_changes
--[no]nodep_deps default: "true"
If enabled, deps from "nodep" attributes will be included in the dependency graph over which the query operates. A common example of a " nodep" attribute is "visibility". Run and parse the output of `info build-language` to learn about all the "nodep" attributes in the build language.
Tags: build_file_semantics
--output=<a string> default: "text"
The format in which the aquery results should be printed. Allowed values for aquery are: text, textproto, proto.
Tags: terminal_output
--[no]proto:default_values default: "true"
If true, attributes whose value is not explicitly specified in the BUILD file are included; otherwise they are omitted. This option is applicable to -- output=proto
Tags: terminal_output
--[no]proto:flatten_selects default: "true"
If enabled, configurable attributes created by select() are flattened. For list types the flattened representation is a list containing each value of the select map exactly once. Scalar types are flattened to null.
Tags: build_file_semantics
--[no]proto:locations default: "true"
Whether to output location information in proto output at all.
Tags: terminal_output
--proto:output_rule_attrs=<comma-separated list of options> default: "all"
Comma separated list of attributes to include in output. Defaults to all attributes. Set to empty string to not output any attribute. This option is applicable to --output=proto.
Tags: terminal_output
--[no]proto:rule_inputs_and_outputs default: "true"
Whether or not to populate the rule_input and rule_output fields.
Tags: terminal_output
--[no]relative_locations default: "false"
If true, the location of BUILD files in xml and proto outputs will be relative. By default, the location output is an absolute path and will not be consistent across machines. You can set this option to true to have a consistent result across machines.
Tags: terminal_output
--[no]skyframe_state default: "false"
Without performing extra analysis, dump the current Action Graph from Skyframe. Note: Specifying a target with --skyframe_state is currently not supported. This flag is only available with --output=proto or --output=textproto.
Tags: terminal_output
--[no]tool_deps default: "true"
Query: If disabled, dependencies on 'host configuration' or ' execution' targets will not be included in the dependency graph over which the query operates. A 'host configuration' dependency edge, such as the one from any 'proto_library' rule to the Protocol Compiler, usually points to a tool executed during the build rather than a part of the same ' target' program. Cquery: If disabled, filters out all configured targets which cross a host or execution transition from the top-level target that discovered this configured target. That means if the top-level target is in the target configuration, only configured targets also in the target configuration will be returned. If the top-level target is in the host configuration, only host configured targets will be returned.
Tags: build_file_semantics
--universe_scope=<comma-separated list of options> default: ""
A comma-separated set of target patterns (additive and subtractive). The query may be performed in the universe defined by the transitive closure of the specified targets. This option is used for the query and cquery commands. For cquery, the input to this option is the targets all answers are built under and so this option may affect configurations and transitions. If this option is not specified, the top-level targets are assumed to be the targets parsed from the query expression. Note: For cquery, not specifying this option may cause the build to break if targets parsed from the query expression are not buildable with top-level options.
Tags: loading_and_analysis
Options that trigger optimizations of the build time:
--[no]collapse_duplicate_defines default: "false"
When enabled, redundant --defines will be removed early in the build. This avoids unnecessary loss of the analysis cache for certain types of equivalent builds.
Tags: loading_and_analysis, loses_incremental_state
--[no]distinct_host_configuration default: "true"
Build all the tools used during the build for a distinct configuration from that used for the target program. When this is disabled, the same configuration is used for host and target programs. This may cause undesirable rebuilds of tools such as the protocol compiler (and then everything downstream) whenever a minor change is made to the target configuration, such as setting the linker options. When this is enabled (the default), a distinct configuration will be used to build the tools, preventing undesired rebuilds. However, certain libraries will then need to be compiled twice, once for each configuration, which may cause some builds to be slower. As a rule of thumb, this option is likely to benefit users that make frequent changes in configuration (e.g. opt/dbg). Please read the user manual for the full explanation.
Tags: loses_incremental_state, bazel_internal_configuration, loading_and_analysis
--[no]experimental_filter_library_jar_with_program_jar default: "false"
Filter the ProGuard ProgramJar to remove any classes also present in the LibraryJar.
Tags: action_command_lines
--[no]experimental_inmemory_dotd_files default: "false"
If enabled, C++ .d files will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_inmemory_jdeps_files default: "false"
If enabled, the dependency (.jdeps) files generated from Java compilations will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_inmemory_unused_inputs_list default: "false"
If enabled, the optional 'unused_inputs_list' file will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_objc_include_scanning default: "false"
Whether to perform include scanning for objective C/C++.
Tags: loading_and_analysis, execution, changes_inputs
--[no]incremental_dexing default: "true"
Does most of the work for dexing separately for each Jar file.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]objc_use_dotd_pruning default: "true"
If set, .d files emitted by clang will be used to prune the set of inputs passed into objc compiles.
Tags: changes_inputs, loading_and_analysis
--[no]parse_headers_verifies_modules default: "false"
If enabled, the parse_headers feature verifies that a header module can be built for the target in question instead of doing a separate compile of the header.
Tags: loading_and_analysis, changes_inputs
--[no]process_headers_in_dependencies default: "false"
When building a target //a:a, process headers in all targets that //a:a depends on (if header processing is enabled for the toolchain).
Tags: execution
--[no]trim_test_configuration default: "false"
When enabled, test-related options will be cleared below the top level of the build. When this flag is active, tests cannot be built as dependencies of non- test rules, but changes to test-related options will not cause non-test rules to be re-analyzed.
Tags: loading_and_analysis, loses_incremental_state
--[no]use_singlejar_apkbuilder default: "true"
Build Android APKs with SingleJar.
Tags: loading_and_analysis
Options that affect the verbosity, format or location of logging:
--[no]toolchain_resolution_debug default: "false"
Print debug information while finding toolchains for a rule. This might help developers of Bazel or Starlark rules with debugging failures due to missing toolchains.
Tags: terminal_output
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--[no]incompatible_default_to_explicit_init_py default: "false"
This flag changes the default behavior so that __init__.py files are no longer automatically created in the runfiles of Python targets. Precisely, when a py_binary or py_test target has legacy_create_init set to "auto" (the default), it is treated as false if and only if this flag is set. See https: //github.com/bazelbuild/bazel/issues/10076.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_py2_outputs_are_suffixed default: "true"
If true, targets built in the Python 2 configuration will appear under an output root that includes the suffix '-py2', while targets built for Python 3 will appear in a root with no Python-related suffix. This means that the `bazel-bin` convenience symlink will point to Python 3 targets rather than Python 2. If you enable this option it is also recommended to enable `-- incompatible_py3_is_default`.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_py3_is_default default: "true"
If true, `py_binary` and `py_test` targets that do not set their `python_version` (or `default_python_version`) attribute will default to PY3 rather than to PY2. It is an error to set this flag without also enabling `-- incompatible_allow_python_version_transitions`. If you set this flag it is also recommended to set `--incompatible_py2_outputs_are_suffixed`.
Tags: loading_and_analysis, affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_python_toolchains default: "true"
If set to true, executable native Python rules will use the Python runtime specified by the Python toolchain, rather than the runtime given by legacy flags like --python_top.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--python_version=<PY2 or PY3> default: see description
The Python major version mode, either `PY2` or `PY3`. Note that under the new version semantics (`--incompatible_allow_python_version_transitions`) this is overridden by `py_binary` and `py_test` targets (even if they don't explicitly specify a version) so there is usually not much reason to supply this flag.
Tags: loading_and_analysis, affects_outputs
Miscellaneous options, not otherwise categorized.:
--[no]cache_test_results [-t] default: "auto"
If set to 'auto', Bazel reruns a test if and only if: (1) Bazel detects changes in the test or its dependencies, (2) the test is marked as external, (3) multiple test runs were requested with --runs_per_test, or(4) the test previously failed. If set to 'yes', Bazel caches all test results except for tests marked as external. If set to 'no', Bazel does not cache any test results.
--check_constraint=<a string> multiple uses are accumulated
Check the listed constraint.
--[no]experimental_cancel_concurrent_tests default: "false"
If true, then Bazel will cancel concurrently running tests on the first successful run. This is only useful in combination with -- runs_per_test_detects_flakes.
Tags: affects_outputs, loading_and_analysis
--[no]experimental_j2objc_header_map default: "true"
Whether to generate J2ObjC header map in parallel of J2ObjC transpilation.
--[no]experimental_j2objc_shorter_header_path default: "false"
Whether to generate with shorter header path (uses "_ios" instead of "_j2objc").
Tags: affects_outputs
--experimental_java_classpath=<off, javabuilder or bazel> default: "javabuilder"
Enables reduced classpaths for Java compilations.
--[no]explicit_java_test_deps default: "false"
Explicitly specify a dependency to JUnit or Hamcrest in a java_test instead of accidentally obtaining from the TestRunner's deps. Only works for bazel right now.
--host_java_launcher=<a build target label> default: see description
The Java launcher used by tools that are executed during a build.
--host_java_toolchain=<a build target label> default: "@bazel_tools//tools/jdk:remote_toolchain"
The Java toolchain used to build tools that are executed during a build.
--host_javabase=<a build target label> default: see description
JAVABASE used for the host JDK. This is the java_runtime which is used to execute tools during a build.
--host_javacopt=<a string> multiple uses are accumulated
Additional options to pass to javac when building tools that are executed during a build.
--[no]incompatible_strict_action_env default: "false"
If true, Bazel uses an environment with a static value for PATH and does not inherit LD_LIBRARY_PATH or TMPDIR. Use --action_env=ENV_VARIABLE if you want to inherit specific environment variables from the client, but note that doing so can prevent cross-user caching if a shared cache is used.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--j2objc_translation_flags=<comma-separated list of options> multiple uses are accumulated
Additional options to pass to the J2ObjC tool.
--java_debug
Causes the Java virtual machine of a java test to wait for a connection from a JDWP-compliant debugger (such as jdb) before starting the test. Implies - test_output=streamed.
Expands to:
  --test_arg=--wrapper_script_flag=--debug
  --test_output=streamed
  --test_strategy=exclusive
  --test_timeout=9999
  --nocache_test_results
--[no]java_deps default: "true"
Generate dependency information (for now, compile-time classpath) per Java target.
--[no]java_header_compilation default: "true"
Compile ijars directly from source.
--java_launcher=<a build target label> default: see description
The Java launcher to use when building Java binaries. The "launcher" attribute overrides this flag.
--java_toolchain=<a build target label> default: "@bazel_tools//tools/jdk:remote_toolchain"
The name of the toolchain rule for Java.
--javabase=<a build target label> default: "@bazel_tools//tools/jdk:jdk"
JAVABASE used for the JDK invoked by Bazel. This is the java_runtime which will be used to execute external Java commands.
--javacopt=<a string> multiple uses are accumulated
Additional options to pass to javac.
--jvmopt=<a string> multiple uses are accumulated
Additional options to pass to the Java VM. These options will get added to the VM startup options of each java_binary target.
--message_translations=<a string> multiple uses are accumulated
The message translations used for translating messages in Java targets.
--plugin=<a build target label> multiple uses are accumulated
Plugins to use in the build. Currently works with java_plugin.
--proguard_top=<a build target label> default: see description
Specifies which version of ProGuard to use for code removal when building a Java binary.
--proto_compiler=<a build target label> default: "@com_google_protobuf//:protoc"
The label of the proto-compiler.
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_cc=<a build target label> default: "@com_google_protobuf//:cc_toolchain"
Label of proto_lang_toolchain() which describes how to compile C++ protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_j2objc=<a build target label> default: "@bazel_tools//tools/j2objc:j2objc_proto_toolchain"
Label of proto_lang_toolchain() which describes how to compile j2objc protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_java=<a build target label> default: "@com_google_protobuf//:java_toolchain"
Label of proto_lang_toolchain() which describes how to compile Java protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_javalite=<a build target label> default: "@com_google_protobuf_javalite//:javalite_toolchain"
Label of proto_lang_toolchain() which describes how to compile JavaLite protos
Tags: affects_outputs, loading_and_analysis
--protocopt=<a string> multiple uses are accumulated
Additional options to pass to the protobuf compiler.
Tags: affects_outputs
--[no]runs_per_test_detects_flakes default: "false"
If true, any shard in which at least one run/attempt passes and at least one run/attempt fails gets a FLAKY status.
--shell_executable=<a path> default: see description
Absolute path to the shell executable for Bazel to use. If this is unset, but the BAZEL_SH environment variable is set on the first Bazel invocation (that starts up a Bazel server), Bazel uses that. If neither is set, Bazel uses a hard-coded default path depending on the operating system it runs on (Windows: c:/tools/msys64/usr/bin/bash.exe, FreeBSD: /usr/local/bin/bash, all others: /bin/bash). Note that using a shell that is not compatible with bash may lead to build failures or runtime failures of the generated binaries.
Tags: loading_and_analysis
--test_arg=<a string> multiple uses are accumulated
Specifies additional options and arguments that should be passed to the test executable. Can be used multiple times to specify several arguments. If multiple tests are executed, each of them will receive identical arguments. Used only by the 'bazel test' command.
--test_filter=<a string> default: see description
Specifies a filter to forward to the test framework. Used to limit the tests run. Note that this does not affect which targets are built.
--test_result_expiration=<an integer> default: "-1"
This option is deprecated and has no effect.
--test_sharding_strategy=<explicit or disabled> default: "explicit"
Specify strategy for test sharding: 'explicit' to only use sharding if the 'shard_count' BUILD attribute is present. 'disabled' to never use test sharding.
--[no]translations default: "auto"
Translate Java messages; bundle all translations into the jar for each affected rule.
--[no]use_ijars default: "true"
If enabled, this option causes Java compilation to use interface jars. This will result in faster incremental compilation, but error messages can be different.

Build Options

Options that appear before the command and are parsed by the client:
--distdir=<a path> multiple uses are accumulated
Additional places to search for archives before accessing the network to download them.
Tags: bazel_internal_configuration
If set, the repository cache will hardlink the file in case of a cache hit, rather than copying. This is inteded to save disk space.
Tags: bazel_internal_configuration
--experimental_scale_timeouts=<a double> default: "1.0"
Scale all timeouts in Starlark repository rules by this factor. In this way, external repositories can be made working on machines that are slower than the rule author expected, without changing the source code
Tags: bazel_internal_configuration, experimental
--http_timeout_scaling=<a double> default: "1.0"
Scale all timeouts related to http downloads by the given factor
Tags: bazel_internal_configuration
--repository_cache=<a path> default: see description
Specifies the cache location of the downloaded values obtained during the fetching of external repositories. An empty string as argument requests the cache to be disabled.
Tags: bazel_internal_configuration
Options that control build execution:
--experimental_docker_image=<a string> default: ""
Specify a Docker image name (e.g. "ubuntu:latest") that should be used to execute a sandboxed action when using the docker strategy and the action itself doesn't already have a container-image attribute in its remote_execution_properties in the platform description. The value of this flag is passed verbatim to 'docker run', so it supports the same syntax and mechanisms as Docker itself.
Tags: execution
--[no]experimental_docker_privileged default: "false"
If enabled, Bazel will pass the --privileged flag to 'docker run' when running actions. This might be required by your build, but it might also result in reduced hermeticity.
Tags: execution
--[no]experimental_docker_use_customized_images default: "true"
If enabled, injects the uid and gid of the current user into the Docker image before using it. This is required if your build / tests depend on the user having a name and home directory inside the container. This is on by default, but you can disable it in case the automatic image customization feature doesn't work in your case or you know that you don't need it.
Tags: execution
--[no]experimental_docker_verbose default: "false"
If enabled, Bazel will print more verbose messages about the Docker sandbox strategy.
Tags: execution
--[no]experimental_enable_docker_sandbox default: "false"
Enable Docker-based sandboxing. This option has no effect if Docker is not installed.
Tags: execution
--experimental_sandbox_async_tree_delete_idle_threads=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "0"
If 0, delete sandbox trees as soon as an action completes (causing completion of the action to be delayed). If greater than zero, execute the deletion of such threes on an asynchronous thread pool that has size 1 when the build is running and grows to the size specified by this flag when the server is idle.
Tags: execution
If true, maps the targets of symbolic links specified as action inputs into the sandbox. This feature exists purely to workaround buggy rules that do not do this on their own and should be removed once all such rules are fixed.
--experimental_sandboxfs_path=<a string> default: "sandboxfs"
Path to the sandboxfs binary to use when --experimental_use_sandboxfs is true. If a bare name, use the first binary of that name found in the PATH.
--[no]experimental_split_xml_generation default: "true"
If this flag is set, and a test action does not generate a test.xml file, then Bazel uses a separate action to generate a dummy test.xml file containing the test log. Otherwise, Bazel generates a test.xml as part of the test action.
Tags: execution
--[no]experimental_use_sandboxfs default: "false"
Use sandboxfs to create the actions' execroot directories instead of building a symlink tree. If "yes", the binary provided by -- experimental_sandboxfs_path must be valid and correspond to a supported version of sandboxfs. If "auto", the binary may be missing or not compatible.
--[no]experimental_use_windows_sandbox default: "false"
Use Windows sandbox to run actions. If "yes", the binary provided by --experimental_windows_sandbox_path must be valid and correspond to a supported version of sandboxfs. If "auto", the binary may be missing or not compatible.
--experimental_windows_sandbox_path=<a string> default: "BazelSandbox.exe"
Path to the Windows sandbox binary to use when -- experimental_use_windows_sandbox is true. If a bare name, use the first binary of that name found in the PATH.
If set to true, Bazel will represent symlinks in action outputs in the remote caching/execution protocol as such. The current behavior is for remote caches/executors to follow symlinks and represent them as files. See #6631 for details.
Tags: execution, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_local_resources default: "false"
Deprecate local_resources in favor of --local_ram_resources and -- local_cpu_resources.
Tags: execution, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_symlinked_sandbox_expands_tree_artifacts_in_runfiles_tree default: "true"
If enabled, the sandbox will expand tree artifacts in runfiles, thus the files that are contained in the tree artifact will be symlinked as individual files.
Tags: execution, triggered_by_all_incompatible_changes, incompatible_change
--jobs=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> [-j] default: "auto"
The number of concurrent jobs to run. Takes {@value FLAG_SYNTAX}. Values must be between 1 and5000 values above 2500 may cause memory issues. " auto" calculates a reasonable default based on host resources.
Tags: host_machine_resource_optimizations, execution
--[no]keep_going [-k] default: "false"
Continue as much as possible after an error. While the target that failed and those that depend on it cannot be analyzed, other prerequisites of these targets can be.
Tags: eagerness_to_exit
--loading_phase_threads=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
Number of parallel threads to use for the loading/analysis phase.Takes an integer, or a keyword ("auto", "HOST_CPUS", " HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". "auto" sets a reasonable default based onhost resources. Must be at least 1.
Tags: bazel_internal_configuration
If true, upload action symlink outputs to the remote cache. If this option is not enabled, cachable actions that output symlinks will fail.
Tags: execution
Options that control the output of the command:
--[no]build default: "true"
Execute the build; this is the usual behaviour. Specifying --nobuild causes the build to stop before executing the build actions, returning zero iff the package loading and analysis phases completed successfully; this mode is useful for testing those phases.
Tags: execution, affects_outputs
--[no]experimental_run_validations default: "false"
Whether to run validation actions as part of the build.
Tags: execution, affects_outputs
--output_groups=<comma-separated list of options> multiple uses are accumulated
Specifies which output groups of the top-level targets to build. If omitted, a default set of output groups are built. When specified the default set is overridden. However you may use --output_groups=+<output_group> or -- output_groups=-<output_group> to instead modify the set of output groups.
Tags: execution, affects_outputs
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--aspects=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of aspects to be applied to top-level targets. All aspects are applied to all top-level targets independently. Aspects are specified in the form <bzl-file-label>%<aspect_name>, for example '//tools: my_def.bzl%my_aspect', where 'my_aspect' is a top-level value from from a file tools/my_def.bzl
--experimental_multi_cpu=<comma-separated list of options> multiple uses are accumulated
This flag allows specifying multiple target CPUs. If this is specified, the -- cpu option is ignored.
Tags: affects_outputs, experimental
--remote_download_minimal
Does not download any remote build outputs to the local machine. This flag is a shortcut for three flags: --experimental_inmemory_jdeps_files, -- experimental_inmemory_dotd_files and -- experimental_remote_download_outputs=minimal.
Expands to:
  --nobuild_runfile_links
  --experimental_inmemory_jdeps_files
  --experimental_inmemory_dotd_files
  --experimental_remote_download_outputs=minimal

Tags: affects_outputs
--remote_download_outputs=<all, minimal or toplevel> default: "all"
If set to 'minimal' doesn't download any remote build outputs to the local machine, except the ones required by local actions. If set to ' toplevel' behaves like'minimal' except that it also downloads outputs of top level targets to the local machine. Both options can significantly reduce build times if network bandwidth is a bottleneck.
Tags: affects_outputs
--remote_download_toplevel
Only downloads remote outputs of top level targets to the local machine. This flag is a shortcut for three flags: --experimental_inmemory_jdeps_files, -- experimental_inmemory_dotd_files and -- experimental_remote_download_outputs=toplevel.
Expands to:
  --experimental_inmemory_jdeps_files
  --experimental_inmemory_dotd_files
  --experimental_remote_download_outputs=toplevel

Tags: affects_outputs
The prefix that is prepended to any of the convenience symlinks that are created after a build. If '/' is passed, then no symlinks are created and no warning is emitted. If omitted, the default value is the name of the build tool followed by a hyphen.
Tags: affects_outputs
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--experimental_repository_hash_file=<a string> default: ""
If non-empty, specifies a file containing a resolved value, against which the repository directory hashes should be verified
Tags: affects_outputs, experimental
--experimental_verify_repository_rules=<a string> multiple uses are accumulated
If list of repository rules for which the hash of the output directory should be verified, provided a file is specified by -- experimental_repository_hash_file.
Tags: affects_outputs, experimental
Options that affect the verbosity, format or location of logging:
--[no]announce default: "false"
Deprecated. No-op.
Tags: affects_outputs
--[no]bep_publish_used_heap_size_post_build default: "false"
When set we collect and publish used_heap_size_post_build from build_event_stream.proto. This forces a full GC and is off by default.
--[no]experimental_build_event_expand_filesets default: "false"
If true, expand Filesets in the BEP when presenting output files.
Tags: affects_outputs
--experimental_build_event_upload_strategy=<a string> default: see description
Selects how to upload artifacts referenced in the build event protocol.
Tags: affects_outputs
--experimental_repository_resolved_file=<a string> default: ""
If non-empty, write a Skylark value with the resolved information of all Starlark repository rules that were executed.
Tags: affects_outputs
--[no]experimental_stream_log_file_uploads default: "false"
Stream log file uploads directly to the remote storage rather than writing them to disk.
Tags: affects_outputs
--explain=<a path> default: see description
Causes the build system to explain each executed step of the build. The explanation is written to the specified log file.
Tags: affects_outputs
--[no]legacy_important_outputs default: "true"
Use this to suppress generation of the legacy important_outputs field in the TargetComplete event.
Tags: affects_outputs
--max_config_changes_to_show=<an integer> default: "3"
When discarding the analysis cache due to a change in the build options, displays up to the given number of changed option names. If the number given is -1, all changed options will be displayed.
Tags: terminal_output
--output_filter=<a valid Java regular expression> default: see description
Only shows warnings for rules with a name matching the provided regular expression.
Tags: affects_outputs
--progress_report_interval=<an integer in 0-3600 range> default: "0"
The number of seconds to wait between two reports on still running jobs. The default value 0 means to use the default 10:30:60 incremental algorithm.
Tags: affects_outputs
--show_result=<an integer> default: "1"
Show the results of the build. For each target, state whether or not it was brought up-to-date, and if so, a list of output files that were built. The printed files are convenient strings for copy+pasting to the shell, to execute them. This option requires an integer argument, which is the threshold number of targets above which result information is not printed. Thus zero causes suppression of the message and MAX_INT causes printing of the result to occur always. The default is one.
Tags: affects_outputs
--[no]verbose_explanations default: "false"
Increases the verbosity of the explanations issued if --explain is enabled. Has no effect if --explain is not enabled.
Tags: affects_outputs
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--experimental_resolved_file_instead_of_workspace=<a string> default: ""
If non-empty read the specified resolved file instead of the WORKSPACE file
Tags: changes_inputs
Remote caching and execution options:
--[no]experimental_guard_against_concurrent_changes default: "false"
Turn this off to disable checking the ctime of input files of an action before uploading it to a remote cache. There may be cases where the Linux kernel delays writing of files, which could cause false positives.
--experimental_remote_grpc_log=<a path> default: see description
If specified, a path to a file to log gRPC call related details. This log consists of a sequence of serialized com.google.devtools.build.lib.remote. logging.RemoteExecutionLog.LogEntry protobufs with each message prefixed by a varint denoting the size of the following serialized protobuf message, as performed by the method LogEntry.writeDelimitedTo(OutputStream).
--[no]remote_accept_cached default: "true"
Whether to accept remotely cached action results.
--remote_cache=<a string> default: see description
A URI of a caching endpoint. The supported schemas are http, https, grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel will default to grpcs. Specify grpc:// or http:// schema to disable TLS.See https://docs.bazel. build/versions/master/remote-caching.html
--remote_default_exec_properties=<a 'name=value' assignment> multiple uses are accumulated
Set the default exec properties to be used as the remote execution platform if an execution platform does not already set exec_properties.
Tags: affects_outputs
--remote_default_platform_properties=<a string> default: ""
Set the default platform properties to be set for the remote execution API, if the execution platform does not already set remote_execution_properties. This value will also be used if the host platform is selected as the execution platform for remote execution.
--remote_execution_priority=<an integer> default: "0"
The relative priority of actions to be executed remotely. The semantics of the particular priority values are server-dependent.
--remote_executor=<a string> default: see description
HOST or HOST:PORT of a remote execution endpoint.The supported schemas are grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel'll default to grpcs. Specify grpc:// schema to disable TLS.
--remote_header=<a 'name=value' assignment> multiple uses are accumulated
Specify a HTTP header that will be included in requests: -- remote_header=Name=Value. Multiple headers can be passed by specifying the flag multiple times. Multiple values for the same name will be converted to a comma- separated list. This flagis currently only implemented for the HTTP protocol.
--remote_instance_name=<a string> default: ""
Value to pass as instance_name in the remote execution API.
--[no]remote_local_fallback default: "false"
Whether to fall back to standalone local execution strategy if remote execution fails.
--remote_local_fallback_strategy=<a string> default: "local"
No-op, deprecated. See https://github.com/bazelbuild/bazel/issues/7480 for details.
--remote_max_connections=<an integer> default: "100"
The max. number of concurrent network connections to the remote cache/executor. By default Bazel limits the number of TCP connections to 100. Setting this flag to 0 will make Bazel choose the number of connections automatically.
Tags: host_machine_resource_optimizations
--remote_proxy=<a string> default: see description
Connect to the remote cache through a proxy. Currently this flag can only be used to configure a Unix domain socket (unix:/path/to/socket).
--remote_result_cache_priority=<an integer> default: "0"
The relative priority of remote actions to be stored in remote cache. The semantics of the particular priority values are server-dependent.
--remote_retries=<an integer> default: "5"
The maximum number of attempts to retry a transient error. If set to 0, retries are disabled.
--remote_timeout=<an integer> default: "60"
The maximum number of seconds to wait for remote execution and cache calls. For the REST cache, this is both the connect and the read timeout.
--[no]remote_upload_local_results default: "true"
Whether to upload locally executed action results to the remote cache.
--[no]remote_verify_downloads default: "true"
If set to true, Bazel will compute the hash sum of all remote downloads and discard the remotely cached values if they don't match the expected value.
Miscellaneous options, not otherwise categorized.:
--auto_output_filter=<none, all, packages or subpackages> default: "none"
If --output_filter is not specified, then the value for this option is used create a filter automatically. Allowed values are 'none' (filter nothing / show everything), 'all' (filter everything / show nothing), 'packages' (include output from rules in packages mentioned on the Bazel command line), and 'subpackages' (like 'packages', but also include subpackages). For the 'packages' and 'subpackages' values //java/foo and //javatests/foo are treated as one package)'.
--[no]build_manual_tests default: "false"
Forces test targets tagged 'manual' to be built. 'manual' tests are excluded from processing. This option forces them to be built (but not executed).
--build_tag_filters=<comma-separated list of options> default: ""
Specifies a comma-separated list of tags. Each tag can be optionally preceded with '-' to specify excluded tags. Only those targets will be built that contain at least one included tag and do not contain any excluded tags. This option does not affect the set of tests executed with the 'test' command; those are be governed by the test filtering options, for example ' --test_tag_filters'
--[no]build_tests_only default: "false"
If specified, only *_test and test_suite rules will be built and other targets specified on the command line will be ignored. By default everything that was requested will be built.
--[no]check_tests_up_to_date default: "false"
Don't run tests, just check if they are up-to-date. If all tests results are up-to-date, the testing completes successfully. If any test needs to be built or executed, an error is reported and the testing fails. This option implies --check_up_to_date behavior.
--[no]check_up_to_date default: "false"
Don't perform the build, just check if it is up-to-date. If all targets are up-to-date, the build completes successfully. If any step needs to be executed an error is reported and the build fails.
--combined_report=<none or lcov> default: "none"
Specifies desired cumulative coverage report type. At this point only HTML and LCOV reports are supported.
--[no]compile_one_dependency default: "false"
Compile a single dependency of the argument files. This is useful for syntax checking source files in IDEs, for example, by rebuilding a single target that depends on the source file to detect errors as early as possible in the edit/build/test cycle. This argument affects the way all non-flag arguments are interpreted; instead of being targets to build they are source filenames. For each source filename an arbitrary target that depends on it will be built.
--deleted_packages=<comma-separated list of package names> default: ""
A comma-separated list of names of packages which the build system will consider non-existent, even if they are visible somewhere on the package path. Use this option when deleting a subpackage 'x/y' of an existing package 'x'. For example, after deleting x/y/BUILD in your client, the build system may complain if it encounters a label '//x:y/z' if that is still provided by another package_path entry. Specifying --deleted_packages x/y avoids this problem.
--[no]discard_analysis_cache default: "false"
Discard the analysis cache immediately after the analysis phase completes. Reduces memory usage by ~10%, but makes further incremental builds slower.
--disk_cache=<a path> default: see description
A path to a directory where Bazel can read and write actions and action outputs. If the directory does not exist, it will be created.
--embed_label=<string> default: ""
Embed source control revision or release label in binary
--execution_log_binary_file=<a path> default: see description
Log the executed spawns into this file as delimited Spawn protos.
--execution_log_json_file=<a path> default: see description
Log the executed spawns into this file as json representation of the delimited Spawn protos.
--[no]expand_test_suites default: "true"
Expand test_suite targets into their constituent tests before analysis. When this flag is turned on (the default), negative target patterns will apply to the tests belonging to the test suite, otherwise they will not. Turning off this flag is useful when top-level aspects are applied at command line: then they can analyze test_suite targets.
Tags: loading_and_analysis
--experimental_execution_log_file=<a path> default: see description
Log the executed spawns into this file as delimited Spawn protos.
--experimental_extra_action_filter=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths> default: ""
Filters set of targets to schedule extra_actions for.
--[no]experimental_extra_action_top_level_only default: "false"
Only schedules extra_actions for top level targets.
--[no]experimental_interleave_loading_and_analysis default: "true"
No-op.
--experimental_local_execution_delay=<an integer> default: "1000"
How many milliseconds should local execution be delayed, if remote execution was faster during a build at least once?
--[no]experimental_local_memory_estimate default: "false"
Estimate the actual memory available online. By default, Bazel assumes most actions use a fixed amount of memory, and counts that against the total available system memory, regardless of how much memory is actually available. This option enables online estimation of how much memory is available at any given time, and thus does not require accurate estimation of how much memory a given action will take.
--[no]experimental_materialize_param_files_directly default: "false"
If materializing param files, do so with direct writes to disk.
--experimental_persistent_javac
Enable the experimental persistent Java compiler.
Expands to:
  --strategy=Javac=worker
  --strategy=JavaIjar=local
  --strategy=JavaDeployJar=local
  --strategy=JavaSourceJar=local
  --strategy=Turbine=local
--experimental_spawn_scheduler
Enable dynamic execution by running actions locally and remotely in parallel. Bazel spawns each action locally and remotely and picks the one that completes first. If an action supports workers, the local action will be run in the persistent worker mode. To enable dynamic execution for an individual action mnemonic, use the `--internal_spawn_scheduler` and `--strategy=<mnemonic> =dynamic` flags instead.
Expands to:
  --internal_spawn_scheduler
  --spawn_strategy=dynamic
--flaky_test_attempts=<a positive integer, the string "default", or test_regex@attempts. This flag may be passed more than once> multiple uses are accumulated
Each test will be retried up to the specified number of times in case of any test failure. Tests that required more than one attempt to pass would be marked as 'FLAKY' in the test summary. If this option is set, it should specify an int N or the string 'default'. If it's an int, then all tests will be run up to N times. If it is not specified or its value is ' default', then only a single test attempt will be made for regular tests and three for tests marked explicitly as flaky by their rule (flaky=1 attribute).
--genrule_strategy=<comma-separated list of options> default: ""
Specify how to execute genrules. This flag will be phased out. Instead, use -- spawn_strategy=<value> to control all actions or --strategy=Genrule=< value> to control genrules only.
--google_auth_scopes=<comma-separated list of options> default: "https://www.googleapis.com/auth/cloud-platform"
A comma-separated list of Google Cloud authentication scopes.
--google_credentials=<a string> default: see description
Specifies the file to get authentication credentials from. See https://cloud. google.com/docs/authentication for details.
--[no]google_default_credentials default: "false"
Whether to use 'Google Application Default Credentials' for authentication. See https://cloud.google.com/docs/authentication for details. Disabled by default.
--high_priority_workers=<a string> multiple uses are accumulated
Mnemonics of workers to run with high priority. When high priority workers are running all other workers are throttled.
--[no]ignore_unsupported_sandboxing default: "false"
Do not print a warning when sandboxed execution is not supported on this system.
--[no]incompatible_tls_enabled_removed default: "true"
No-op. See #8061 for details.
Tags: incompatible_change, triggered_by_all_incompatible_changes
--local_cpu_resources=<an integer, or "HOST_CPUS", optionally followed by [-|*]<float>.> default: "HOST_CPUS"
Explicitly set the number of local CPU threads available to Bazel. Takes an integer, or "HOST_CPUS", optionally followed by [-|*]<float> (eg. HOST_CPUS*.5 to use half the available CPU cores).By default, (" HOST_CPUS"), Bazel will query system configuration to estimate number of CPU cores available for the locally executed build actions. Note: This is a no- op if --local_resources is set.
--local_ram_resources=<an integer, or "HOST_RAM", optionally followed by [-|*]<float>.> default: "HOST_RAM*.67"
Explicitly set the amount of local host RAM (in MB) available to Bazel. Takes an integer, or "HOST_RAM", optionally followed by [-|*]<float> (eg. HOST_RAM*.5 to use half the available RAM).By default, ("HOST_RAM*. 67"), Bazel will query system configuration to estimate amount of RAM available for the locally executed build actions and will use 67% of available RAM. Note: This is a no-op if --ram_utilization_factor or --local_resources is set.
--local_resources=<comma-separated available amount of RAM (in MB), CPU (in cores) and available I/O (1.0 being average workstation)> default: see description
Explicitly set amount of local resources available to Bazel. By default, Bazel will query system configuration to estimate amount of RAM (in MB) and number of CPU cores available for the locally executed build actions. It would also assume default I/O capabilities of the local workstation (1.0). This options allows to explicitly set all 3 values. Note, that if this option is used, Bazel will ignore --ram_utilization_factor, --local_cpu_resources, and -- local_ram_resources.
--local_termination_grace_seconds=<an integer> default: "15"
Time to wait between terminating a local process due to timeout and forcefully shutting it down.
--local_test_jobs=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
The max number of local test jobs to run concurrently. Takes an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". 0 means local resources will limit the number of local test jobs to run concurrently instead. Setting this greater than the value for --jobs is ineffectual.
--[no]materialize_param_files default: "false"
Writes intermediate parameter files to output tree even when using remote action execution. Useful when debugging actions. This is implied by -- subcommands.
--override_repository=<an equals-separated mapping of repository name to path> multiple uses are accumulated
Overrides a repository with a local directory.
--package_path=<colon-separated list of options> default: "%workspace%"
A colon-separated list of where to look for packages. Elements beginning with '%workspace%' are relative to the enclosing workspace. If omitted or empty, the default is the output of 'bazel info default-package-path'.
--ram_utilization_factor=<an integer> default: "0"
Specify what percentage of the system's RAM Bazel should try to use for its subprocesses. This option affects how many processes Bazel will try to run in parallel. If you run several Bazel builds in parallel, using a lower value for this option may avoid thrashing and thus improve overall throughput. Using a value higher than 67 is NOT recommended. Note that Bazel's estimates are very coarse, so the actual RAM usage may be much higher or much lower than specified. Note also that this option does not affect the amount of memory that the Bazel server itself will use. Setting this value overrides -- local_ram_resources
--[no]resource_autosense default: "false"
This flag has no effect, and is deprecated
--sandbox_add_mount_pair=<a single path or a 'source:target' pair> multiple uses are accumulated
Add additional path pair to mount in sandbox.
--sandbox_base=<a string> default: ""
Lets the sandbox create its sandbox directories underneath this path. Specify a path on tmpfs (like /run/shm) to possibly improve performance a lot when your build / tests have many input files. Note: You need enough RAM and free space on the tmpfs to hold output and intermediate files generated by running actions.
--sandbox_block_path=<a string> multiple uses are accumulated
For sandboxed actions, disallow access to this path.
--[no]sandbox_debug default: "false"
Enables debugging features for the sandboxing feature. This includes two things: first, the sandbox root contents are left untouched after a build (and if sandboxfs is in use, the file system is left mounted); and second, prints extra debugging information on execution. This can help developers of Bazel or Starlark rules with debugging failures due to missing input files, etc.
--[no]sandbox_default_allow_network default: "true"
Allow network access by default for actions; this may not work with all sandboxing implementations.
--[no]sandbox_fake_hostname default: "false"
Change the current hostname to 'localhost' for sandboxed actions.
--[no]sandbox_fake_username default: "false"
Change the current username to 'nobody' for sandboxed actions.
--sandbox_tmpfs_path=<a string> multiple uses are accumulated
For sandboxed actions, mount an empty, writable directory at this path (if supported by the sandboxing implementation, ignored otherwise).
--sandbox_writable_path=<a string> multiple uses are accumulated
For sandboxed actions, make an existing directory writable in the sandbox (if supported by the sandboxing implementation, ignored otherwise).
--[no]show_loading_progress default: "true"
If enabled, causes Bazel to print "Loading package:" messages.
--spawn_strategy=<comma-separated list of options> default: ""
Specify how spawn actions are executed by default. Accepts a comma-separated list of strategies from highest to lowest priority. For each action Bazel picks the strategy with the highest priority that can execute the action. The default value is "remote,worker,sandboxed,local".See https://blog.bazel. build/2019/06/19/list-strategy.html for details.
--strategy=<a '[name=]value1[,..,valueN]' assignment> multiple uses are accumulated
Specify how to distribute compilation of other spawn actions. Accepts a comma- separated list of strategies from highest to lowest priority. For each action Bazel picks the strategy with the highest priority that can execute the action. The default value is "remote,worker,sandboxed,local".See https://blog. bazel.build/2019/06/19/list-strategy.html for details.
--strategy_regexp=<a '<RegexFilter>=value[,value]' assignment> multiple uses are accumulated
Override which spawn strategy should be used to execute spawn actions that have descriptions matching a certain regex_filter. See --per_file_copt for details onregex_filter matching. The first regex_filter that matches the description is used. This option overrides other flags for specifying strategy. Example: -- strategy_regexp=//foo.*\.cc,-//foo/bar=local means to run actions using local strategy if their descriptions match //foo.*.cc but not //foo/bar. Example: -- strategy_regexp='Compiling.*/bar=local -- strategy_regexp=Compiling=sandboxed will run 'Compiling //foo/bar/baz' with the 'local' strategy, but reversing the order would run it with 'sandboxed'.
--[no]subcommands [-s] default: "false"
Display the subcommands executed during a build.
--[no]test_keep_going default: "true"
When disabled, any non-passing test will cause the entire build to stop. By default all tests are run, even if some do not pass.
--test_lang_filters=<comma-separated list of options> default: ""
Specifies a comma-separated list of test languages. Each language can be optionally preceded with '-' to specify excluded languages. Only those test targets will be found that are written in the specified languages. The name used for each language should be the same as the language prefix in the *_test rule, e.g. one of 'cc', 'java', 'py', etc. This option affects --build_tests_only behavior and the test command.
--test_output=<summary, errors, all or streamed> default: "summary"
Specifies desired output mode. Valid values are 'summary' to output only test status summary, 'errors' to also print test logs for failed tests, 'all' to print logs for all tests and 'streamed' to output logs for all tests in real time (this will force tests to be executed locally one at a time regardless of --test_strategy value).
--test_size_filters=<comma-separated list of values: small, medium, large or enormous> default: ""
Specifies a comma-separated list of test sizes. Each size can be optionally preceded with '-' to specify excluded sizes. Only those test targets will be found that contain at least one included size and do not contain any excluded sizes. This option affects --build_tests_only behavior and the test command.
--test_strategy=<a string> default: ""
Specifies which strategy to use when running tests.
--test_summary=<short, terse, detailed, none or testcase> default: "short"
Specifies the desired format ot the test summary. Valid values are ' short' to print information only about tests executed, 'terse', to print information only about unsuccessful tests that were run, ' detailed' to print detailed information about failed test cases, and ' none' to omit the summary.
--test_tag_filters=<comma-separated list of options> default: ""
Specifies a comma-separated list of test tags. Each tag can be optionally preceded with '-' to specify excluded tags. Only those test targets will be found that contain at least one included tag and do not contain any excluded tags. This option affects --build_tests_only behavior and the test command.
--test_timeout_filters=<comma-separated list of values: short, moderate, long or eternal> default: ""
Specifies a comma-separated list of test timeouts. Each timeout can be optionally preceded with '-' to specify excluded timeouts. Only those test targets will be found that contain at least one included timeout and do not contain any excluded timeouts. This option affects --build_tests_only behavior and the test command.
--test_tmpdir=<a path> default: see description
Specifies the base temporary directory for 'bazel test' to use.
--tls_certificate=<a string> default: see description
Specify the TLS client certificate to use.
--[no]tls_enabled default: "false"
No-op. See #8061 for details.
--[no]verbose_failures default: "false"
If a command fails, print out the full command line.
--worker_extra_flag=<a 'name=value' assignment> multiple uses are accumulated
Extra command-flags that will be passed to worker processes in addition to -- persistent_worker, keyed by mnemonic (e.g. --worker_extra_flag=Javac=--debug.
--worker_max_instances=<[name=]value, where value is an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> multiple uses are accumulated
How many instances of a worker process (like the persistent Java compiler) may be launched if you use the 'worker' strategy. May be specified as [name=value] to give a different value per worker mnemonic. Takes an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". 'auto' calculates a reasonable default based on machine capacity. "=value" sets a default for unspecified mnemonics.
--[no]worker_quit_after_build default: "false"
If enabled, all workers quit after a build is done.
--[no]worker_sandboxing default: "false"
If enabled, workers will be executed in a sandboxed environment.
--[no]worker_verbose default: "false"
If enabled, prints verbose messages when workers are started, shutdown, ...
--workspace_status_command=<path> default: ""
A command invoked at the beginning of the build to provide status information about the workspace in the form of key/value pairs. See the User's Manual for the full specification.
Options that control build execution:
Whether to make direct file system calls to create symlink trees
Tags: loading_and_analysis, execution, experimental
--[no]experimental_split_xml_generation default: "true"
If this flag is set, and a test action does not generate a test.xml file, then Bazel uses a separate action to generate a dummy test.xml file containing the test log. Otherwise, Bazel generates a test.xml as part of the test action.
Tags: execution
--[no]experimental_strict_fileset_output default: "false"
If this option is enabled, filesets will treat all output artifacts as regular files. They will not traverse directories or be sensitive to symlinks.
Tags: execution
--[no]incompatible_remove_local_resources default: "false"
Deprecate local_resources in favor of --local_ram_resources and -- local_cpu_resources.
Tags: execution, incompatible_change, triggered_by_all_incompatible_changes
--jobs=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> [-j] default: "auto"
The number of concurrent jobs to run. Takes {@value FLAG_SYNTAX}. Values must be between 1 and5000 values above 2500 may cause memory issues. " auto" calculates a reasonable default based on host resources.
Tags: host_machine_resource_optimizations, execution
--[no]keep_going [-k] default: "false"
Continue as much as possible after an error. While the target that failed and those that depend on it cannot be analyzed, other prerequisites of these targets can be.
Tags: eagerness_to_exit
--loading_phase_threads=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
Number of parallel threads to use for the loading/analysis phase.Takes an integer, or a keyword ("auto", "HOST_CPUS", " HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". "auto" sets a reasonable default based onhost resources. Must be at least 1.
Tags: bazel_internal_configuration
--modify_execution_info=<regex=[+-]key,regex=[+-]key,...> default: ""
Add or remove keys from an action's execution info based on action mnemonic. Applies only to actions which support execution info. Many common actions support execution info, e.g. Genrule, CppCompile, Javac, SkylarkAction, TestRunner. When specifying multiple values, order matters because many regexes may apply to the same mnemonic. Syntax: "regex=[+-]key,[+-]key,...". Examples: '.*=+x,.*=-y,.*=+z' adds 'x' and 'z' to, and removes 'y' from, the execution info for all actions. 'Genrule=+requires-x' adds 'requires-x' to the execution info for all Genrule actions. '(?!Genrule).*=-requires-x' removes 'requires-x' from the execution info for all non-Genrule actions.
Tags: execution, affects_outputs, loading_and_analysis
--persistent_android_resource_processor
Enable the persistent Android resource processor by using workers.
Expands to:
  --internal_persistent_busybox_tools
  --strategy=AaptPackage=worker
  --strategy=AndroidResourceParser=worker
  --strategy=AndroidResourceValidator=worker
  --strategy=AndroidResourceCompiler=worker
  --strategy=RClassGenerator=worker
  --strategy=AndroidResourceLink=worker
  --strategy=AndroidAapt2=worker
  --strategy=AndroidAssetMerger=worker
  --strategy=AndroidResourceMerger=worker
  --strategy=AndroidCompiledResourceMerger=worker

Tags: host_machine_resource_optimizations, execution
Options that configure the toolchain used for action execution:
--android_aapt=<aapt or aapt2> default: "aapt2"
Selects the version of androidAaptVersion to use for android_binary rules.Flag to help the test and transition to aapt2.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_compiler=<a string> default: see description
The Android target compiler.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_crosstool_top=<a build target label> default: "//external:android/crosstool"
The location of the C++ compiler used for Android builds.
Tags: affects_outputs, changes_inputs, loading_and_analysis, loses_incremental_state
--android_grte_top=<a label> default: see description
The Android target grte_top.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--android_manifest_merger=<legacy, android or force_android> default: "android"
Selects the manifest merger to use for android_binary rules. Flag to help thetransition to the Android manifest merger from the legacy merger.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_sdk=<a build target label> default: "@bazel_tools//tools/android:sdk"
Specifies Android SDK/platform that is used to build Android applications.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--apple_compiler=<a string> default: see description
The Apple target compiler. Useful for selecting variants of a toolchain (e.g. xcode-beta).
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--apple_crosstool_top=<a build target label> default: "@bazel_tools//tools/cpp:toolchain"
The label of the crosstool package to be used in Apple and Objc rules and their dependencies.
Tags: loses_incremental_state, changes_inputs
--apple_grte_top=<a build target label> default: see description
The Apple target grte_top.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--apple_sdk=<a build target label> default: see description
Location of target that will provide the appropriate Apple SDK for the current build configuration.
Tags: affects_outputs, loading_and_analysis
--cc_output_directory_tag=<a string> default: ""
Specifies a suffix to be added to the configuration directory.
Tags: affects_outputs
--compiler=<a string> default: see description
The C++ compiler to use for compiling the target.
Tags: loading_and_analysis, execution
--coverage_report_generator=<a build target label> default: "@bazel_tools//tools/test:coverage_report_generator"
Location of the binary that is used to generate coverage reports. This must currently be a filegroup that contains a single file, the binary. Defaults to '//tools/test:coverage_report_generator'.
Tags: changes_inputs, affects_outputs, loading_and_analysis
--coverage_support=<a build target label> default: "@bazel_tools//tools/test:coverage_support"
Location of support files that are required on the inputs of every test action that collects code coverage. Defaults to '//tools/test: coverage_support'.
Tags: changes_inputs, affects_outputs, loading_and_analysis
--crosstool_top=<a build target label> default: "@bazel_tools//tools/cpp:toolchain"
The label of the crosstool package to be used for compiling C++ code.
Tags: loading_and_analysis, changes_inputs, affects_outputs
--custom_malloc=<a build target label> default: see description
Specifies a custom malloc implementation. This setting overrides malloc attributes in build rules.
Tags: changes_inputs, affects_outputs
--enabled_toolchain_types=<a build target label> default: ""
Enable toolchain resolution for the given toolchain type, if the rules used support that. This does not directly change the core Bazel machinery, but is a signal to participating rule implementations that toolchain resolution should be used.
Tags: loading_and_analysis
--experimental_add_exec_constraints_to_targets=<a '<RegexFilter>=<label1>[,<label2>,...]' assignment> multiple uses are accumulated
List of comma-separated regular expressions, each optionally prefixed by - (negative expression), assigned (=) to a list of comma-separated constraint value targets. If a target matches no negative expression and at least one positive expression its toolchain resolution will be performed as if it had declared the constraint values as execution constraints. Example: //demo,- test=@platforms//cpus:x86_64 will add 'x86_64' to any target under //demo except for those whose name contains 'test'.
Tags: loading_and_analysis
--[no]experimental_enable_objc_cc_deps default: "true"
Allows objc_* rules to depend on cc_library and causes any objc dependencies to be built with --cpu set to "ios_<--ios_cpu>" for any values in --ios_multi_cpu.
Tags: loading_and_analysis, incompatible_change
--extra_execution_platforms=<comma-separated list of options> multiple uses are accumulated
The platforms that are available as execution platforms to run actions. Platforms can be specified by exact target, or as a target pattern. These platforms will be considered before those declared in the WORKSPACE file by register_execution_platforms().
Tags: execution
--extra_toolchains=<comma-separated list of options> multiple uses are accumulated
The toolchain rules to be considered during toolchain resolution. Toolchains can be specified by exact target, or as a target pattern. These toolchains will be considered before those declared in the WORKSPACE file by register_toolchains().
Tags: affects_outputs, changes_inputs, loading_and_analysis
--grte_top=<a label> default: see description
A label to a checked-in libc library. The default value is selected by the crosstool toolchain, and you almost never need to override it.
Tags: action_command_lines, affects_outputs
--host_compiler=<a string> default: see description
The C++ compiler to use for host compilation. It is ignored if -- host_crosstool_top is not set.
Tags: loading_and_analysis, execution
--host_crosstool_top=<a build target label> default: see description
By default, the --crosstool_top and --compiler options are also used for the host configuration. If this flag is provided, Bazel uses the default libc and compiler for the given crosstool_top.
Tags: loading_and_analysis, changes_inputs, affects_outputs
--host_grte_top=<a label> default: see description
If specified, this setting overrides the libc top-level directory (--grte_top) for the host configuration.
Tags: action_command_lines, affects_outputs
--host_platform=<a build target label> default: ""
The label of a platform rule that describes the host system.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--[no]incompatible_disable_expand_if_all_available_in_flag_set default: "true"
If true, Bazel will not allow specifying expand_if_all_available in flag_sets (see https://github.com/bazelbuild/bazel/issues/7008 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_dont_enable_host_nonhost_crosstool_features default: "true"
If true, Bazel will not enable 'host' and 'nonhost' features in the c++ toolchain (see https://github.com/bazelbuild/bazel/issues/7407 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_make_thinlto_command_lines_standalone default: "true"
If true, Bazel will not reuse C++ link action command lines for lto indexing command lines (see https://github.com/bazelbuild/bazel/issues/6791 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_prohibit_aapt1 default: "true"
End support for aapt in Android rules. To resolve issues when migrating your app to build with aapt2, see https://developer.android.com/studio/command- line/aapt2#aapt2_changes
Tags: loses_incremental_state, affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_cpu_and_compiler_attributes_from_cc_toolchain default: "true"
If true, Bazel will complain when cc_toolchain.cpu and cc_toolchain.compiler attribtues are set (see https://github.com/bazelbuild/bazel/issues/7075 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_legacy_whole_archive default: "true"
If true, Bazel will not link library dependencies as whole archive by default (see https://github.com/bazelbuild/bazel/issues/7362 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_require_ctx_in_configure_features default: "true"
If true, Bazel will require 'ctx' parameter in to cc_common. configure_features (see https://github.com/bazelbuild/bazel/issues/7793 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_strict_objc_module_maps default: "false"
Propagates Objective-C module maps only to direct dependencies in the ' objc' provider, not to all transitive dependencies.
Tags: changes_inputs, loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]interface_shared_objects default: "true"
Use interface shared objects if supported by the toolchain. All ELF toolchains currently support this setting.
Tags: loading_and_analysis, affects_outputs, affects_outputs
--ios_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the iOS SDK to use to build iOS applications. If unspecified, uses default iOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--macos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the macOS SDK to use to build macOS applications. If unspecified, uses default macOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--minimum_os_version=<a string> default: see description
The minimum OS version which your compilation targets.
Tags: loading_and_analysis, affects_outputs
--objc_header_scanner_tool=<a build target label> default: "@bazel_tools//tools/objc:header_scanner"
Location of tool to scan Objective-C code for inclusions and output a . headers_list file.
Tags: changes_inputs
--platform_mappings=<a relative path> default: ""
The location of a mapping file that describes which platform to use if none is set or which flags to set when a platform already exists. Must be relative to the main workspace root. Defaults to 'platform_mappings' (a file directly under the workspace root).
Tags: affects_outputs, changes_inputs, loading_and_analysis
--platforms=<a build target label> default: ""
The labels of the platform rules describing the target platforms for the current command.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--python2_path=<a string> default: see description
Deprecated, no-op. Disabled by `--incompatible_use_python_toolchains`.
Tags: no_op, deprecated
--python3_path=<a string> default: see description
Deprecated, no-op. Disabled by `--incompatible_use_python_toolchains`.
Tags: no_op, deprecated
--python_path=<a string> default: see description
The absolute path of the Python interpreter invoked to run Python targets on the target platform. Deprecated; disabled by -- incompatible_use_python_toolchains.
Tags: loading_and_analysis, affects_outputs
--python_top=<a build target label> default: see description
The label of a py_runtime representing the Python interpreter invoked to run Python targets on the target platform. Deprecated; disabled by -- incompatible_use_python_toolchains.
Tags: loading_and_analysis, affects_outputs
--target_platform_fallback=<a build target label> default: "@bazel_tools//platforms:target_platform"
The label of a platform rule that should be used if no target platform is set and no platform mapping matches the current set of flags.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--tvos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the tvOS SDK to use to build tvOS applications. If unspecified, uses default tvOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--watchos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the watchOS SDK to use to build watchOS applications. If unspecified, uses default watchOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--xcode_version=<a string> default: see description
If specified, uses Xcode of the given version for relevant build actions. If unspecified, uses the executor default version of Xcode.
Tags: loses_incremental_state
--xcode_version_config=<a build target label> default: "@local_config_xcode//:host_xcodes"
The label of the xcode_config rule to be used for selecting the Xcode version in the build configuration.
Tags: loses_incremental_state, loading_and_analysis
Options that control the output of the command:
--[no]apple_enable_auto_dsym_dbg default: "false"
Whether to force enable generating debug symbol(.dSYM) file(s) for dbg builds.
Tags: affects_outputs, action_command_lines
--[no]apple_generate_dsym default: "false"
Whether to generate debug symbol(.dSYM) file(s).
Tags: affects_outputs, action_command_lines
--[no]build default: "true"
Execute the build; this is the usual behaviour. Specifying --nobuild causes the build to stop before executing the build actions, returning zero iff the package loading and analysis phases completed successfully; this mode is useful for testing those phases.
Tags: execution, affects_outputs
If true, build runfiles symlink forests for all targets. If false, write only manifests when possible.
Tags: affects_outputs
--[no]build_runfile_manifests default: "true"
If true, write runfiles manifests for all targets. If false, omit them.
Tags: affects_outputs
--[no]build_test_dwp default: "false"
If enabled, when building C++ tests statically and with fission the .dwp file for the test binary will be automatically built as well.
Tags: loading_and_analysis, affects_outputs
--cc_proto_library_header_suffixes=<comma-separated list of options> default: ".pb.h"
Sets the prefixes of header files that a cc_proto_library creates.
Tags: affects_outputs, loading_and_analysis
--cc_proto_library_source_suffixes=<comma-separated list of options> default: ".pb.cc"
Sets the prefixes of source files that a cc_proto_library creates.
Tags: affects_outputs, loading_and_analysis
--[no]enable_apple_binary_native_protos default: "true"
If set, apple_binary will generate and link objc protos into the output binary.
Tags: affects_outputs, incompatible_change
--[no]experimental_objc_enable_module_maps default: "false"
Enables module map generation and interpretation.
Tags: action_command_lines
--[no]experimental_proto_extra_actions default: "false"
Run extra actions for alternative Java api versions in a proto_library.
Tags: affects_outputs, loading_and_analysis, experimental
--[no]experimental_run_validations default: "false"
Whether to run validation actions as part of the build.
Tags: execution, affects_outputs
--[no]experimental_save_feature_state default: "false"
Save the state of enabled and requested feautres as an output of compilation.
Tags: affects_outputs, experimental
--fission=<a set of compilation modes> default: "no"
Specifies which compilation modes use fission for C++ compilations and links. May be any combination of {'fastbuild', 'dbg', 'opt'} or the special values 'yes' to enable all modes and 'no' to disable all modes.
Tags: loading_and_analysis, action_command_lines, affects_outputs
--[no]legacy_external_runfiles default: "true"
If true, build runfiles symlink forests for external repositories under . runfiles/wsname/external/repo (in addition to .runfiles/repo).
Tags: affects_outputs
--[no]objc_generate_linkmap default: "false"
Specifies whether to generate a linkmap file.
Tags: affects_outputs
--output_groups=<comma-separated list of options> multiple uses are accumulated
Specifies which output groups of the top-level targets to build. If omitted, a default set of output groups are built. When specified the default set is overridden. However you may use --output_groups=+<output_group> or -- output_groups=-<output_group> to instead modify the set of output groups.
Tags: execution, affects_outputs
--[no]save_temps default: "false"
If set, temporary outputs from gcc will be saved. These include .s files (assembler code), .i files (preprocessed C) and .ii files (preprocessed C++).
Tags: affects_outputs
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--action_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies the set of environment variables available to actions. Variables can be either specified by name, in which case the value will be taken from the invocation environment, or by the name=value pair which sets the value independent of the invocation environment. This option can be used multiple times; for options given for the same variable, the latest wins, options for different variables accumulate.
Tags: action_command_lines
--android_cpu=<a string> default: "armeabi-v7a"
The Android target CPU.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]android_databinding_use_v3_4_args default: "false"
Use android databinding v2 with 3.4.0 argument
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--android_dynamic_mode=<off, default or fully> default: "off"
Determines whether C++ deps of Android rules will be linked dynamically when a cc_binary does not explicitly create a shared library. 'default' means bazel will choose whether to link dynamically. 'fully' means all libraries will be linked dynamically. 'off' means that all libraries will be linked in mostly static mode.
Tags: affects_outputs, loading_and_analysis
--android_manifest_merger_order=<alphabetical, alphabetical_by_configuration or dependency> default: "alphabetical"
Sets the order of manifests passed to the manifest merger for Android binaries. ALPHABETICAL means manifests are sorted by path relative to the execroot. ALPHABETICAL_BY_CONFIGURATION means manifests are sorted by paths relative to the configuration directory within the output directory. DEPENDENCY means manifests are ordered with each library's manifest coming before the manifests of its dependencies.
Tags: action_command_lines, execution
--[no]android_resource_shrinking default: "false"
Enables resource shrinking for android_binary APKs that use ProGuard.
Tags: affects_outputs, loading_and_analysis
--apple_bitcode=<none, embedded_markers or embedded> default: "none"
Specify the Apple bitcode mode for compile steps. Values: 'none', ' embedded_markers', 'embedded'.
Tags: loses_incremental_state
--aspects=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of aspects to be applied to top-level targets. All aspects are applied to all top-level targets independently. Aspects are specified in the form <bzl-file-label>%<aspect_name>, for example '//tools: my_def.bzl%my_aspect', where 'my_aspect' is a top-level value from from a file tools/my_def.bzl
--[no]build_python_zip default: "auto"
Build python executable zip; on on Windows, off on other platforms
Tags: affects_outputs
--[no]collect_code_coverage default: "false"
If specified, Bazel will instrument code (using offline instrumentation where possible) and will collect coverage information during tests. Only targets that match --instrumentation_filter will be affected. Usually this option should not be specified directly - 'bazel coverage' command should be used instead.
Tags: affects_outputs
--compilation_mode=<fastbuild, dbg or opt> [-c] default: "fastbuild"
Specify the mode the binary will be built in. Values: 'fastbuild', ' dbg', 'opt'.
Tags: affects_outputs, action_command_lines
--conlyopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C source files.
Tags: action_command_lines, affects_outputs
--copt=<a string> multiple uses are accumulated
Additional options to pass to gcc.
Tags: action_command_lines, affects_outputs
--cpu=<a string> default: ""
The target CPU.
Tags: changes_inputs, affects_outputs
--cs_fdo_absolute_path=<a string> default: see description
Use CSFDO profile information to optimize compilation. Specify the absolute path name of the zip file containing the profile file, a raw or an indexed LLVM profile file.
Tags: affects_outputs
--cs_fdo_instrument=<a string> default: see description
Generate binaries with context sensitive FDO instrumentation. With Clang/LLVM compiler, it also accepts the directory name under which the raw profile file (s) will be dumped at runtime.
Tags: affects_outputs
--cs_fdo_profile=<a build target label> default: see description
The cs_fdo_profile representing the context sensitive profile to be used for optimization.
Tags: affects_outputs
--cxxopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C++ source files.
Tags: action_command_lines, affects_outputs
--define=<a 'name=value' assignment> multiple uses are accumulated
Each --define option specifies an assignment for a build variable.
Tags: changes_inputs, affects_outputs
--dynamic_mode=<off, default or fully> default: "default"
Determines whether C++ binaries will be linked dynamically. 'default' means Bazel will choose whether to link dynamically. 'fully' means all libraries will be linked dynamically. 'off' means that all libraries will be linked in mostly static mode.
Tags: loading_and_analysis, affects_outputs
--[no]enable_fdo_profile_absolute_path default: "true"
If set, use of fdo_absolute_profile_path will raise an error.
Tags: affects_outputs
--[no]enable_runfiles default: "auto"
Enable runfiles symlink tree; By default, it's off on Windows, on on other platforms.
Tags: affects_outputs
--experimental_action_listener=<a build target label> multiple uses are accumulated
Use action_listener to attach an extra_action to existing build actions.
Tags: execution, experimental
--[no]experimental_android_compress_java_resources default: "false"
Compress Java resources in APKs
Tags: affects_outputs, loading_and_analysis, experimental
--[no]experimental_android_databinding_v2 default: "false"
Use android databinding v2
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--[no]experimental_android_resource_shrinking default: "false"
Enables resource shrinking for android_binary APKs that use ProGuard.
Tags: affects_outputs, loading_and_analysis
--[no]experimental_android_rewrite_dexes_with_rex default: "false"
use rex tool to rewrite dex files
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--experimental_multi_cpu=<comma-separated list of options> multiple uses are accumulated
This flag allows specifying multiple target CPUs. If this is specified, the -- cpu option is ignored.
Tags: affects_outputs, experimental
--experimental_objc_fastbuild_options=<comma-separated list of options> default: "-O0,-DDEBUG=1"
Uses these strings as objc fastbuild compiler options.
Tags: action_command_lines
--[no]experimental_omitfp default: "false"
If true, use libunwind for stack unwinding, and compile with -fomit-frame- pointer and -fasynchronous-unwind-tables.
Tags: action_command_lines, affects_outputs, experimental
--[no]experimental_use_llvm_covmap default: "false"
If specified, Bazel will generate llvm-cov coverage map information rather than gcov when collect_code_coverage is enabled.
Tags: changes_inputs, affects_outputs, loading_and_analysis, experimental
--fat_apk_cpu=<comma-separated list of options> default: "armeabi-v7a"
Setting this option enables fat APKs, which contain native binaries for all specified target architectures, e.g., --fat_apk_cpu=x86,armeabi-v7a. If this flag is specified, then --android_cpu is ignored for dependencies of android_binary rules.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--fdo_instrument=<a string> default: see description
Generate binaries with FDO instrumentation. With Clang/LLVM compiler, it also accepts the directory name under which the raw profile file(s) will be dumped at runtime.
Tags: affects_outputs
--fdo_optimize=<a string> default: see description
Use FDO profile information to optimize compilation. Specify the name of the zip file containing the .gcda file tree, or an afdo file containing an auto profile. This flag also accepts files specified as labels, for example //foo/bar:file.afdo. Such labels must refer to input files; you may need to add an exports_files directive to the corresponding package to make the file visible to Bazel. It also accepts a raw or an indexed LLVM profile file. This flag will be superseded by fdo_profile rule.
Tags: affects_outputs
--fdo_prefetch_hints=<a build target label> default: see description
Use cache prefetch hints.
Tags: affects_outputs
--fdo_profile=<a build target label> default: see description
The fdo_profile representing the profile to be used for optimization.
Tags: affects_outputs
--features=<a string> multiple uses are accumulated
The given features will be enabled or disabled by default for all packages. Specifying -<feature> will disable the feature globally. Negative features always override positive ones. This flag is used to enable rolling out default feature changes without a Bazel release.
Tags: changes_inputs, affects_outputs
--[no]force_pic default: "false"
If enabled, all C++ compilations produce position-independent code ("- fPIC"), links prefer PIC pre-built libraries over non-PIC libraries, and links produce position-independent executables ("-pie").
Tags: loading_and_analysis, affects_outputs
--force_python=<PY2 or PY3> default: see description
Deprecated alias for `--python_version`. Disabled by `-- incompatible_remove_old_python_version_api`.
Tags: loading_and_analysis, affects_outputs
--host_compilation_mode=<fastbuild, dbg or opt> default: "opt"
Specify the mode the tools used during the build will be built in. Values: ' fastbuild', 'dbg', 'opt'.
Tags: affects_outputs, action_command_lines
--host_conlyopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C source files for host tools.
Tags: action_command_lines, affects_outputs
--host_copt=<a string> multiple uses are accumulated
Additional options to pass to gcc for host tools.
Tags: action_command_lines, affects_outputs
--host_cpu=<a string> default: ""
The host CPU.
Tags: changes_inputs, affects_outputs
--host_cxxopt=<a string> multiple uses are accumulated
Additional options to pass to gcc for host tools.
Tags: action_command_lines, affects_outputs
--host_force_python=<PY2 or PY3> default: see description
Overrides the Python version for the host configuration. Can be "PY2" or "PY3".
Tags: loading_and_analysis, affects_outputs
--host_linkopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when linking host tools.
Tags: action_command_lines, affects_outputs
--host_swiftcopt=<a string> multiple uses are accumulated
Additional options to pass to swiftc for host tools.
Tags: action_command_lines, affects_outputs
--[no]incompatible_merge_genfiles_directory default: "true"
If true, the genfiles directory is folded into the bin directory.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_platforms_repo_for_constraints default: "false"
If true, constraint settings from @bazel_tools are removed.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]instrument_test_targets default: "false"
When coverage is enabled, specifies whether to consider instrumenting test rules. When set, test rules included by --instrumentation_filter are instrumented. Otherwise, test rules are always excluded from coverage instrumentation.
Tags: affects_outputs
--instrumentation_filter=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths> default: "-/javatests[/:],-/test/java[/:]"
When coverage is enabled, only rules with names included by the specified regex- based filter will be instrumented. Rules prefixed with '-' are excluded instead. Note that only non-test rules are instrumented unless -- instrument_test_targets is enabled.
Tags: affects_outputs
--ios_cpu=<a string> default: "x86_64"
Specifies to target CPU of iOS compilation.
Tags: no_op, deprecated
--ios_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible iOS version for target simulators and devices. If unspecified, uses 'ios_sdk_version'.
Tags: loses_incremental_state
--ios_multi_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures to build an ios_application with. The result is a universal binary containing all specified architectures.
Tags: loses_incremental_state, loading_and_analysis
--[no]legacy_whole_archive default: "true"
Deprecated, superseded by --incompatible_remove_legacy_whole_archive (see https: //github.com/bazelbuild/bazel/issues/7362 for details). When on, use --whole- archive for cc_binary rules that have linkshared=1 and either linkstatic=1 or '-static' in linkopts. This is for backwards compatibility only. A better alternative is to use alwayslink=1 where required.
Tags: action_command_lines, affects_outputs, deprecated
--linkopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when linking.
Tags: action_command_lines, affects_outputs
--ltobackendopt=<a string> multiple uses are accumulated
Additional option to pass to the LTO backend step (under --features=thin_lto).
Tags: action_command_lines, affects_outputs
--ltoindexopt=<a string> multiple uses are accumulated
Additional option to pass to the LTO indexing step (under --features=thin_lto).
Tags: action_command_lines, affects_outputs
--macos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple macOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--macos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible macOS version for targets. If unspecified, uses ' macos_sdk_version'.
Tags: loses_incremental_state
--[no]objc_debug_with_GLIBCXX default: "false"
If set, and compilation mode is set to 'dbg', define GLIBCXX_DEBUG, GLIBCXX_DEBUG_PEDANTIC and GLIBCPP_CONCEPT_CHECKS.
Tags: action_command_lines
--[no]objc_enable_binary_stripping default: "false"
Whether to perform symbol and dead-code strippings on linked binaries. Binary strippings will be performed if both this flag and --compilation_mode=opt are specified.
Tags: action_command_lines
--objccopt=<a string> multiple uses are accumulated
Additional options to pass to Objective C compilation.
Tags: action_command_lines
--per_file_copt=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths followed by an @ and a comma separated list of options> multiple uses are accumulated
Additional options to selectively pass to gcc when compiling certain files. This option can be passed multiple times. Syntax: regex_filter@option_1, option_2,...,option_n. Where regex_filter stands for a list of include and exclude regular expression patterns (Also see --instrumentation_filter). option_1 to option_n stand for arbitrary command line options. If an option contains a comma it has to be quoted with a backslash. Options can contain @. Only the first @ is used to split the string. Example: --per_file_copt=//foo/. *\.cc,-//foo/bar\.cc@-O0 adds the -O0 command line option to the gcc command line of all cc files in //foo/ except bar.cc.
Tags: action_command_lines, affects_outputs
--per_file_ltobackendopt=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths followed by an @ and a comma separated list of options> multiple uses are accumulated
Additional options to selectively pass to LTO backend (under -- features=thin_lto) when compiling certain backend objects. This option can be passed multiple times. Syntax: regex_filter@option_1,option_2,...,option_n. Where regex_filter stands for a list of include and exclude regular expression patterns. option_1 to option_n stand for arbitrary command line options. If an option contains a comma it has to be quoted with a backslash. Options can contain @. Only the first @ is used to split the string. Example: -- per_file_ltobackendopt=//foo/.*\.o,-//foo/bar\.o@-O0 adds the -O0 command line option to the LTO backend command line of all o files in //foo/ except bar.o.
Tags: action_command_lines, affects_outputs
--platform_suffix=<a string> default: see description
Specifies a suffix to be added to the configuration directory.
Tags: loses_incremental_state, affects_outputs, loading_and_analysis
--repo_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies additional environment variables to be available only for repository rules. Note that repository rules see the full environment anyway, but in this way configuration information can be passed to repositories through options without invalidating the action graph.
Tags: action_command_lines
--run_under=<a prefix in front of command> default: see description
Prefix to insert in front of command before running. Examples: --run_under=valgrind --run_under=strace --run_under='strace -c' --run_under='valgrind --quiet --num-callers=20' --run_under=//package:target --run_under='//package:target --options'
Tags: action_command_lines
--[no]share_native_deps default: "true"
If true, native libraries that contain identical functionality will be shared among different targets
Tags: loading_and_analysis, affects_outputs
--[no]stamp default: "false"
Stamp binaries with the date, username, hostname, workspace information, etc.
Tags: affects_outputs
--strip=<always, sometimes or never> default: "sometimes"
Specifies whether to strip binaries and shared libraries (using "-Wl,-- strip-debug"). The default value of 'sometimes' means strip iff -- compilation_mode=fastbuild.
Tags: affects_outputs
--stripopt=<a string> multiple uses are accumulated
Additional options to pass to strip when generating a '<name>. stripped' binary.
Tags: action_command_lines, affects_outputs
--swiftcopt=<a string> multiple uses are accumulated
Additional options to pass to Swift compilation.
Tags: action_command_lines
The prefix that is prepended to any of the convenience symlinks that are created after a build. If '/' is passed, then no symlinks are created and no warning is emitted. If omitted, the default value is the name of the build tool followed by a hyphen.
Tags: affects_outputs
--tvos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple tvOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--tvos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible tvOS version for target simulators and devices. If unspecified, uses 'tvos_sdk_version'.
Tags: loses_incremental_state
--watchos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple watchOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--watchos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible watchOS version for target simulators and devices. If unspecified, uses 'watchos_sdk_version'.
Tags: loses_incremental_state
--xbinary_fdo=<a build target label> default: see description
Use XbinaryFDO profile information to optimize compilation. Specify the name of default cross binary profile. When the option is used together with -- fdo_instrument/--fdo_optimize/--fdo_profile, those options will always prevail as if xbinary_fdo is never specified.
Tags: affects_outputs
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--auto_cpu_environment_group=<a build target label> default: ""
Declare the environment_group to use for automatically mapping cpu values to target_environment values.
Tags: changes_inputs, loading_and_analysis, experimental
--[no]check_licenses default: "false"
Check that licensing constraints imposed by dependent packages do not conflict with distribution modes of the targets being built. By default, licenses are not checked.
Tags: build_file_semantics
--[no]check_visibility default: "true"
If disabled, visibility errors are demoted to warnings.
Tags: build_file_semantics
--[no]desugar_for_android default: "true"
Whether to desugar Java 8 bytecode before dexing.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]enforce_constraints default: "true"
Checks the environments each target is compatible with and reports errors if any target has dependencies that don't support the same environments
Tags: build_file_semantics
--[no]experimental_allow_android_library_deps_without_srcs default: "false"
Flag to help transition from allowing to disallowing srcs-less android_library rules with deps. The depot needs to be cleaned up to roll this out by default.
Tags: eagerness_to_exit, loading_and_analysis
--[no]experimental_check_desugar_deps default: "true"
Whether to double-check correct desugaring at Android binary level.
Tags: eagerness_to_exit, loading_and_analysis, experimental
--[no]experimental_desugar_java8_libs default: "false"
Whether to include supported Java 8 libraries in apps for legacy devices.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--experimental_import_deps_checking=<off, warning or error> default: "OFF"
When enabled, check whether the dependencies of an aar_import are complete. This enforcement can break the build, or can just result in warnings.
Tags: loading_and_analysis
--[no]experimental_java_proto_add_allowed_public_imports default: "false"
If true, add --allowed_public_imports to the java compile actions.
Tags: affects_outputs, loading_and_analysis, experimental
--experimental_strict_java_deps=<off, warn, error, strict or default> default: "default"
If true, checks that a Java target explicitly declares all directly used targets as dependencies.
Tags: build_file_semantics, eagerness_to_exit
--[no]incompatible_disable_native_android_rules default: "false"
If enabled, direct usage of the native Android rules is disabled. Please use the Starlark Android rules from https://github.com/bazelbuild/rules_android
Tags: eagerness_to_exit, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_validate_top_level_header_inclusions default: "false"
If true, Bazel will also validate top level directory header inclusions (see https://github.com/bazelbuild/bazel/issues/10047 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]strict_filesets default: "false"
If this option is enabled, filesets crossing package boundaries are reported as errors. It does not work when check_fileset_dependencies_recursively is disabled.
Tags: build_file_semantics, eagerness_to_exit
--strict_proto_deps=<off, warn, error, strict or default> default: "error"
Unless OFF, checks that a proto_library target explicitly declares all directly used targets as dependencies.
Tags: build_file_semantics, eagerness_to_exit, incompatible_change
--[no]strict_system_includes default: "false"
If true, headers found through system include paths (-isystem) are also required to be declared.
Tags: loading_and_analysis, eagerness_to_exit
--target_environment=<a build target label> multiple uses are accumulated
Declares this build's target environment. Must be a label reference to an "environment" rule. If specified, all top-level targets must be compatible with this environment.
Tags: changes_inputs
Options that affect the signing outputs of a build:
--apk_signing_method=<v1, v2 or v1_v2> default: "v1_v2"
Implementation to use to sign APKs
Tags: action_command_lines, affects_outputs, loading_and_analysis
--default_ios_provisioning_profile=<a build target label> default: ""

Tags: changes_inputs
--[no]device_debug_entitlements default: "true"
If set, and compilation mode is not 'opt', objc apps will include debug entitlements when signing.
Tags: changes_inputs
--ios_signing_cert_name=<a string> default: see description
Certificate name to use for iOS signing. If not set will fall back to provisioning profile. May be the certificate's keychain identity preference or (substring) of the certificate's common name, as per codesign's man page (SIGNING IDENTITIES).
Tags: action_command_lines
This option affects semantics of the Starlark language or the build API accessible to BUILD files, .bzl files, or WORKSPACE files.:
--[no]incompatible_allow_python_version_transitions default: "true"
If true, Python rules use the new PY2/PY3 version semantics. For more information, see the documentation for `py_binary`'s `python_version` attribute.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_legacy_py_provider default: "true"
If set to true, native Python rules will neither produce nor consume the legacy "py" provider. Use PyInfo instead. Under this flag, passing the legacy provider to a Python target will be an error.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_old_python_version_api default: "true"
If true, disables use of the `--force_python` flag and the `default_python_version` attribute for `py_binary` and `py_test`. Use the `-- python_version` flag and `python_version` attribute instead, which have exactly the same meaning. This flag also disables `select()`-ing over `-- host_force_python`.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
Options that govern the behavior of the test environment or test runner:
--[no]allow_analysis_failures default: "false"
If true, an analysis failure of a rule target results in the target's propagation of an instance of AnalysisFailureInfo containing the error description, instead of resulting in a build failure.
Tags: loading_and_analysis, experimental
--analysis_testing_deps_limit=<an integer> default: "500"
Sets the maximum number of transitive dependencies through a rule attribute with a for_analysis_testing configuration transition. Exceeding this limit will result in a rule error.
Tags: loading_and_analysis
--[no]break_build_on_parallel_dex2oat_failure default: "false"
If true dex2oat action failures will cause the build to break instead of executing dex2oat during test runtime.
Tags: loading_and_analysis, experimental
--[no]experimental_android_use_parallel_dex2oat default: "false"
Use dex2oat in parallel to possibly speed up android_test.
Tags: loading_and_analysis, host_machine_resource_optimizations, experimental
--[no]incompatible_windows_native_test_wrapper default: "true"
On Windows: if true, uses the C++ test wrapper to run tests, otherwise uses tools/test/test-setup.sh as on other platforms. On other platforms: no-op.
Tags: loading_and_analysis, test_runner, incompatible_change, triggered_by_all_incompatible_changes
--[no]ios_memleaks default: "false"
Enable checking for memory leaks in ios_test targets.
Tags: action_command_lines
--ios_simulator_device=<a string> default: see description
The device to simulate when running an iOS application in the simulator, e.g. 'iPhone 6'. You can get a list of devices by running 'xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--ios_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of iOS to run on the simulator when running or testing. This is ignored for ios_test rules if a target device is specified in the rule.
Tags: test_runner
--runs_per_test=<a positive integer or test_regex@runs. This flag may be passed more than once> multiple uses are accumulated
Specifies number of times to run each test. If any of those attempts fail for any reason, the whole test would be considered failed. Normally the value specified is just an integer. Example: --runs_per_test=3 will run all tests 3 times. Alternate syntax: regex_filter@runs_per_test. Where runs_per_test stands for an integer value and regex_filter stands for a list of include and exclude regular expression patterns (Also see --instrumentation_filter). Example: -- runs_per_test=//foo/.*,-//foo/bar/.*@3 runs all tests in //foo/ except those under foo/bar three times. This option can be passed multiple times.
--test_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies additional environment variables to be injected into the test runner environment. Variables can be either specified by name, in which case its value will be read from the Bazel client environment, or by the name=value pair. This option can be used multiple times to specify several variables. Used only by the 'bazel test' command.
Tags: test_runner
--test_timeout=<a single integer or comma-separated list of 4 integers> default: "-1"
Override the default test timeout values for test timeouts (in secs). If a single positive integer value is specified it will override all categories. If 4 comma-separated integers are specified, they will override the timeouts for short, moderate, long and eternal (in that order). In either form, a value of -1 tells bazel to use its default timeouts for that category.
--tvos_simulator_device=<a string> default: see description
The device to simulate when running an tvOS application in the simulator, e.g. 'Apple TV 1080p'. You can get a list of devices by running 'xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--tvos_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of tvOS to run on the simulator when running or testing.
Tags: test_runner
--watchos_simulator_device=<a string> default: see description
The device to simulate when running an watchOS application in the simulator, e. g. 'Apple Watch - 38mm'. You can get a list of devices by running ' xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--watchos_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of watchOS to run on the simulator when running or testing.
Tags: test_runner
Options that trigger optimizations of the build time:
--[no]collapse_duplicate_defines default: "false"
When enabled, redundant --defines will be removed early in the build. This avoids unnecessary loss of the analysis cache for certain types of equivalent builds.
Tags: loading_and_analysis, loses_incremental_state
--[no]distinct_host_configuration default: "true"
Build all the tools used during the build for a distinct configuration from that used for the target program. When this is disabled, the same configuration is used for host and target programs. This may cause undesirable rebuilds of tools such as the protocol compiler (and then everything downstream) whenever a minor change is made to the target configuration, such as setting the linker options. When this is enabled (the default), a distinct configuration will be used to build the tools, preventing undesired rebuilds. However, certain libraries will then need to be compiled twice, once for each configuration, which may cause some builds to be slower. As a rule of thumb, this option is likely to benefit users that make frequent changes in configuration (e.g. opt/dbg). Please read the user manual for the full explanation.
Tags: loses_incremental_state, bazel_internal_configuration, loading_and_analysis
--[no]experimental_filter_library_jar_with_program_jar default: "false"
Filter the ProGuard ProgramJar to remove any classes also present in the LibraryJar.
Tags: action_command_lines
--[no]experimental_inmemory_dotd_files default: "false"
If enabled, C++ .d files will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_inmemory_jdeps_files default: "false"
If enabled, the dependency (.jdeps) files generated from Java compilations will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_inmemory_unused_inputs_list default: "false"
If enabled, the optional 'unused_inputs_list' file will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_objc_include_scanning default: "false"
Whether to perform include scanning for objective C/C++.
Tags: loading_and_analysis, execution, changes_inputs
--[no]incremental_dexing default: "true"
Does most of the work for dexing separately for each Jar file.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]objc_use_dotd_pruning default: "true"
If set, .d files emitted by clang will be used to prune the set of inputs passed into objc compiles.
Tags: changes_inputs, loading_and_analysis
--[no]parse_headers_verifies_modules default: "false"
If enabled, the parse_headers feature verifies that a header module can be built for the target in question instead of doing a separate compile of the header.
Tags: loading_and_analysis, changes_inputs
--[no]process_headers_in_dependencies default: "false"
When building a target //a:a, process headers in all targets that //a:a depends on (if header processing is enabled for the toolchain).
Tags: execution
--[no]trim_test_configuration default: "false"
When enabled, test-related options will be cleared below the top level of the build. When this flag is active, tests cannot be built as dependencies of non- test rules, but changes to test-related options will not cause non-test rules to be re-analyzed.
Tags: loading_and_analysis, loses_incremental_state
--[no]use_singlejar_apkbuilder default: "true"
Build Android APKs with SingleJar.
Tags: loading_and_analysis
Options that affect the verbosity, format or location of logging:
--[no]announce default: "false"
Deprecated. No-op.
Tags: affects_outputs
--[no]experimental_build_event_expand_filesets default: "false"
If true, expand Filesets in the BEP when presenting output files.
Tags: affects_outputs
--experimental_build_event_upload_strategy=<a string> default: see description
Selects how to upload artifacts referenced in the build event protocol.
Tags: affects_outputs
--[no]experimental_stream_log_file_uploads default: "false"
Stream log file uploads directly to the remote storage rather than writing them to disk.
Tags: affects_outputs
--explain=<a path> default: see description
Causes the build system to explain each executed step of the build. The explanation is written to the specified log file.
Tags: affects_outputs
--[no]legacy_important_outputs default: "true"
Use this to suppress generation of the legacy important_outputs field in the TargetComplete event.
Tags: affects_outputs
--max_config_changes_to_show=<an integer> default: "3"
When discarding the analysis cache due to a change in the build options, displays up to the given number of changed option names. If the number given is -1, all changed options will be displayed.
Tags: terminal_output
--output_filter=<a valid Java regular expression> default: see description
Only shows warnings for rules with a name matching the provided regular expression.
Tags: affects_outputs
--progress_report_interval=<an integer in 0-3600 range> default: "0"
The number of seconds to wait between two reports on still running jobs. The default value 0 means to use the default 10:30:60 incremental algorithm.
Tags: affects_outputs
--show_result=<an integer> default: "1"
Show the results of the build. For each target, state whether or not it was brought up-to-date, and if so, a list of output files that were built. The printed files are convenient strings for copy+pasting to the shell, to execute them. This option requires an integer argument, which is the threshold number of targets above which result information is not printed. Thus zero causes suppression of the message and MAX_INT causes printing of the result to occur always. The default is one.
Tags: affects_outputs
--[no]toolchain_resolution_debug default: "false"
Print debug information while finding toolchains for a rule. This might help developers of Bazel or Starlark rules with debugging failures due to missing toolchains.
Tags: terminal_output
--[no]verbose_explanations default: "false"
Increases the verbosity of the explanations issued if --explain is enabled. Has no effect if --explain is not enabled.
Tags: affects_outputs
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--[no]incompatible_default_to_explicit_init_py default: "false"
This flag changes the default behavior so that __init__.py files are no longer automatically created in the runfiles of Python targets. Precisely, when a py_binary or py_test target has legacy_create_init set to "auto" (the default), it is treated as false if and only if this flag is set. See https: //github.com/bazelbuild/bazel/issues/10076.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_py2_outputs_are_suffixed default: "true"
If true, targets built in the Python 2 configuration will appear under an output root that includes the suffix '-py2', while targets built for Python 3 will appear in a root with no Python-related suffix. This means that the `bazel-bin` convenience symlink will point to Python 3 targets rather than Python 2. If you enable this option it is also recommended to enable `-- incompatible_py3_is_default`.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_py3_is_default default: "true"
If true, `py_binary` and `py_test` targets that do not set their `python_version` (or `default_python_version`) attribute will default to PY3 rather than to PY2. It is an error to set this flag without also enabling `-- incompatible_allow_python_version_transitions`. If you set this flag it is also recommended to set `--incompatible_py2_outputs_are_suffixed`.
Tags: loading_and_analysis, affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_python_toolchains default: "true"
If set to true, executable native Python rules will use the Python runtime specified by the Python toolchain, rather than the runtime given by legacy flags like --python_top.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--python_version=<PY2 or PY3> default: see description
The Python major version mode, either `PY2` or `PY3`. Note that under the new version semantics (`--incompatible_allow_python_version_transitions`) this is overridden by `py_binary` and `py_test` targets (even if they don't explicitly specify a version) so there is usually not much reason to supply this flag.
Tags: loading_and_analysis, affects_outputs
Miscellaneous options, not otherwise categorized.:
--[no]build_manual_tests default: "false"
Forces test targets tagged 'manual' to be built. 'manual' tests are excluded from processing. This option forces them to be built (but not executed).
--build_tag_filters=<comma-separated list of options> default: ""
Specifies a comma-separated list of tags. Each tag can be optionally preceded with '-' to specify excluded tags. Only those targets will be built that contain at least one included tag and do not contain any excluded tags. This option does not affect the set of tests executed with the 'test' command; those are be governed by the test filtering options, for example ' --test_tag_filters'
--[no]build_tests_only default: "false"
If specified, only *_test and test_suite rules will be built and other targets specified on the command line will be ignored. By default everything that was requested will be built.
--[no]cache_test_results [-t] default: "auto"
If set to 'auto', Bazel reruns a test if and only if: (1) Bazel detects changes in the test or its dependencies, (2) the test is marked as external, (3) multiple test runs were requested with --runs_per_test, or(4) the test previously failed. If set to 'yes', Bazel caches all test results except for tests marked as external. If set to 'no', Bazel does not cache any test results.
--check_constraint=<a string> multiple uses are accumulated
Check the listed constraint.
--[no]check_tests_up_to_date default: "false"
Don't run tests, just check if they are up-to-date. If all tests results are up-to-date, the testing completes successfully. If any test needs to be built or executed, an error is reported and the testing fails. This option implies --check_up_to_date behavior.
--[no]check_up_to_date default: "false"
Don't perform the build, just check if it is up-to-date. If all targets are up-to-date, the build completes successfully. If any step needs to be executed an error is reported and the build fails.
--[no]compile_one_dependency default: "false"
Compile a single dependency of the argument files. This is useful for syntax checking source files in IDEs, for example, by rebuilding a single target that depends on the source file to detect errors as early as possible in the edit/build/test cycle. This argument affects the way all non-flag arguments are interpreted; instead of being targets to build they are source filenames. For each source filename an arbitrary target that depends on it will be built.
--deleted_packages=<comma-separated list of package names> default: ""
A comma-separated list of names of packages which the build system will consider non-existent, even if they are visible somewhere on the package path. Use this option when deleting a subpackage 'x/y' of an existing package 'x'. For example, after deleting x/y/BUILD in your client, the build system may complain if it encounters a label '//x:y/z' if that is still provided by another package_path entry. Specifying --deleted_packages x/y avoids this problem.
--[no]discard_analysis_cache default: "false"
Discard the analysis cache immediately after the analysis phase completes. Reduces memory usage by ~10%, but makes further incremental builds slower.
--execution_log_binary_file=<a path> default: see description
Log the executed spawns into this file as delimited Spawn protos.
--execution_log_json_file=<a path> default: see description
Log the executed spawns into this file as json representation of the delimited Spawn protos.
--[no]expand_test_suites default: "true"
Expand test_suite targets into their constituent tests before analysis. When this flag is turned on (the default), negative target patterns will apply to the tests belonging to the test suite, otherwise they will not. Turning off this flag is useful when top-level aspects are applied at command line: then they can analyze test_suite targets.
Tags: loading_and_analysis
--[no]experimental_cancel_concurrent_tests default: "false"
If true, then Bazel will cancel concurrently running tests on the first successful run. This is only useful in combination with -- runs_per_test_detects_flakes.
Tags: affects_outputs, loading_and_analysis
--experimental_execution_log_file=<a path> default: see description
Log the executed spawns into this file as delimited Spawn protos.
--experimental_extra_action_filter=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths> default: ""
Filters set of targets to schedule extra_actions for.
--[no]experimental_extra_action_top_level_only default: "false"
Only schedules extra_actions for top level targets.
--[no]experimental_interleave_loading_and_analysis default: "true"
No-op.
--[no]experimental_j2objc_header_map default: "true"
Whether to generate J2ObjC header map in parallel of J2ObjC transpilation.
--[no]experimental_j2objc_shorter_header_path default: "false"
Whether to generate with shorter header path (uses "_ios" instead of "_j2objc").
Tags: affects_outputs
--experimental_java_classpath=<off, javabuilder or bazel> default: "javabuilder"
Enables reduced classpaths for Java compilations.
--[no]experimental_local_memory_estimate default: "false"
Estimate the actual memory available online. By default, Bazel assumes most actions use a fixed amount of memory, and counts that against the total available system memory, regardless of how much memory is actually available. This option enables online estimation of how much memory is available at any given time, and thus does not require accurate estimation of how much memory a given action will take.
--[no]experimental_materialize_param_files_directly default: "false"
If materializing param files, do so with direct writes to disk.
--[no]explicit_java_test_deps default: "false"
Explicitly specify a dependency to JUnit or Hamcrest in a java_test instead of accidentally obtaining from the TestRunner's deps. Only works for bazel right now.
--flaky_test_attempts=<a positive integer, the string "default", or test_regex@attempts. This flag may be passed more than once> multiple uses are accumulated
Each test will be retried up to the specified number of times in case of any test failure. Tests that required more than one attempt to pass would be marked as 'FLAKY' in the test summary. If this option is set, it should specify an int N or the string 'default'. If it's an int, then all tests will be run up to N times. If it is not specified or its value is ' default', then only a single test attempt will be made for regular tests and three for tests marked explicitly as flaky by their rule (flaky=1 attribute).
--genrule_strategy=<comma-separated list of options> default: ""
Specify how to execute genrules. This flag will be phased out. Instead, use -- spawn_strategy=<value> to control all actions or --strategy=Genrule=< value> to control genrules only.
--host_java_launcher=<a build target label> default: see description
The Java launcher used by tools that are executed during a build.
--host_java_toolchain=<a build target label> default: "@bazel_tools//tools/jdk:remote_toolchain"
The Java toolchain used to build tools that are executed during a build.
--host_javabase=<a build target label> default: see description
JAVABASE used for the host JDK. This is the java_runtime which is used to execute tools during a build.
--host_javacopt=<a string> multiple uses are accumulated
Additional options to pass to javac when building tools that are executed during a build.
--[no]incompatible_strict_action_env default: "false"
If true, Bazel uses an environment with a static value for PATH and does not inherit LD_LIBRARY_PATH or TMPDIR. Use --action_env=ENV_VARIABLE if you want to inherit specific environment variables from the client, but note that doing so can prevent cross-user caching if a shared cache is used.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--j2objc_translation_flags=<comma-separated list of options> multiple uses are accumulated
Additional options to pass to the J2ObjC tool.
--java_debug
Causes the Java virtual machine of a java test to wait for a connection from a JDWP-compliant debugger (such as jdb) before starting the test. Implies - test_output=streamed.
Expands to:
  --test_arg=--wrapper_script_flag=--debug
  --test_output=streamed
  --test_strategy=exclusive
  --test_timeout=9999
  --nocache_test_results
--[no]java_deps default: "true"
Generate dependency information (for now, compile-time classpath) per Java target.
--[no]java_header_compilation default: "true"
Compile ijars directly from source.
--java_launcher=<a build target label> default: see description
The Java launcher to use when building Java binaries. The "launcher" attribute overrides this flag.
--java_toolchain=<a build target label> default: "@bazel_tools//tools/jdk:remote_toolchain"
The name of the toolchain rule for Java.
--javabase=<a build target label> default: "@bazel_tools//tools/jdk:jdk"
JAVABASE used for the JDK invoked by Bazel. This is the java_runtime which will be used to execute external Java commands.
--javacopt=<a string> multiple uses are accumulated
Additional options to pass to javac.
--jvmopt=<a string> multiple uses are accumulated
Additional options to pass to the Java VM. These options will get added to the VM startup options of each java_binary target.
--local_cpu_resources=<an integer, or "HOST_CPUS", optionally followed by [-|*]<float>.> default: "HOST_CPUS"
Explicitly set the number of local CPU threads available to Bazel. Takes an integer, or "HOST_CPUS", optionally followed by [-|*]<float> (eg. HOST_CPUS*.5 to use half the available CPU cores).By default, (" HOST_CPUS"), Bazel will query system configuration to estimate number of CPU cores available for the locally executed build actions. Note: This is a no- op if --local_resources is set.
--local_ram_resources=<an integer, or "HOST_RAM", optionally followed by [-|*]<float>.> default: "HOST_RAM*.67"
Explicitly set the amount of local host RAM (in MB) available to Bazel. Takes an integer, or "HOST_RAM", optionally followed by [-|*]<float> (eg. HOST_RAM*.5 to use half the available RAM).By default, ("HOST_RAM*. 67"), Bazel will query system configuration to estimate amount of RAM available for the locally executed build actions and will use 67% of available RAM. Note: This is a no-op if --ram_utilization_factor or --local_resources is set.
--local_resources=<comma-separated available amount of RAM (in MB), CPU (in cores) and available I/O (1.0 being average workstation)> default: see description
Explicitly set amount of local resources available to Bazel. By default, Bazel will query system configuration to estimate amount of RAM (in MB) and number of CPU cores available for the locally executed build actions. It would also assume default I/O capabilities of the local workstation (1.0). This options allows to explicitly set all 3 values. Note, that if this option is used, Bazel will ignore --ram_utilization_factor, --local_cpu_resources, and -- local_ram_resources.
--local_termination_grace_seconds=<an integer> default: "15"
Time to wait between terminating a local process due to timeout and forcefully shutting it down.
--local_test_jobs=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
The max number of local test jobs to run concurrently. Takes an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". 0 means local resources will limit the number of local test jobs to run concurrently instead. Setting this greater than the value for --jobs is ineffectual.
--[no]materialize_param_files default: "false"
Writes intermediate parameter files to output tree even when using remote action execution. Useful when debugging actions. This is implied by -- subcommands.
--message_translations=<a string> multiple uses are accumulated
The message translations used for translating messages in Java targets.
--package_path=<colon-separated list of options> default: "%workspace%"
A colon-separated list of where to look for packages. Elements beginning with '%workspace%' are relative to the enclosing workspace. If omitted or empty, the default is the output of 'bazel info default-package-path'.
--plugin=<a build target label> multiple uses are accumulated
Plugins to use in the build. Currently works with java_plugin.
--proguard_top=<a build target label> default: see description
Specifies which version of ProGuard to use for code removal when building a Java binary.
--proto_compiler=<a build target label> default: "@com_google_protobuf//:protoc"
The label of the proto-compiler.
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_cc=<a build target label> default: "@com_google_protobuf//:cc_toolchain"
Label of proto_lang_toolchain() which describes how to compile C++ protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_j2objc=<a build target label> default: "@bazel_tools//tools/j2objc:j2objc_proto_toolchain"
Label of proto_lang_toolchain() which describes how to compile j2objc protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_java=<a build target label> default: "@com_google_protobuf//:java_toolchain"
Label of proto_lang_toolchain() which describes how to compile Java protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_javalite=<a build target label> default: "@com_google_protobuf_javalite//:javalite_toolchain"
Label of proto_lang_toolchain() which describes how to compile JavaLite protos
Tags: affects_outputs, loading_and_analysis
--protocopt=<a string> multiple uses are accumulated
Additional options to pass to the protobuf compiler.
Tags: affects_outputs
--ram_utilization_factor=<an integer> default: "0"
Specify what percentage of the system's RAM Bazel should try to use for its subprocesses. This option affects how many processes Bazel will try to run in parallel. If you run several Bazel builds in parallel, using a lower value for this option may avoid thrashing and thus improve overall throughput. Using a value higher than 67 is NOT recommended. Note that Bazel's estimates are very coarse, so the actual RAM usage may be much higher or much lower than specified. Note also that this option does not affect the amount of memory that the Bazel server itself will use. Setting this value overrides -- local_ram_resources
--[no]resource_autosense default: "false"
This flag has no effect, and is deprecated
--[no]runs_per_test_detects_flakes default: "false"
If true, any shard in which at least one run/attempt passes and at least one run/attempt fails gets a FLAKY status.
--shell_executable=<a path> default: see description
Absolute path to the shell executable for Bazel to use. If this is unset, but the BAZEL_SH environment variable is set on the first Bazel invocation (that starts up a Bazel server), Bazel uses that. If neither is set, Bazel uses a hard-coded default path depending on the operating system it runs on (Windows: c:/tools/msys64/usr/bin/bash.exe, FreeBSD: /usr/local/bin/bash, all others: /bin/bash). Note that using a shell that is not compatible with bash may lead to build failures or runtime failures of the generated binaries.
Tags: loading_and_analysis
--[no]show_loading_progress default: "true"
If enabled, causes Bazel to print "Loading package:" messages.
--spawn_strategy=<comma-separated list of options> default: ""
Specify how spawn actions are executed by default. Accepts a comma-separated list of strategies from highest to lowest priority. For each action Bazel picks the strategy with the highest priority that can execute the action. The default value is "remote,worker,sandboxed,local".See https://blog.bazel. build/2019/06/19/list-strategy.html for details.
--strategy=<a '[name=]value1[,..,valueN]' assignment> multiple uses are accumulated
Specify how to distribute compilation of other spawn actions. Accepts a comma- separated list of strategies from highest to lowest priority. For each action Bazel picks the strategy with the highest priority that can execute the action. The default value is "remote,worker,sandboxed,local".See https://blog. bazel.build/2019/06/19/list-strategy.html for details.
--strategy_regexp=<a '<RegexFilter>=value[,value]' assignment> multiple uses are accumulated
Override which spawn strategy should be used to execute spawn actions that have descriptions matching a certain regex_filter. See --per_file_copt for details onregex_filter matching. The first regex_filter that matches the description is used. This option overrides other flags for specifying strategy. Example: -- strategy_regexp=//foo.*\.cc,-//foo/bar=local means to run actions using local strategy if their descriptions match //foo.*.cc but not //foo/bar. Example: -- strategy_regexp='Compiling.*/bar=local -- strategy_regexp=Compiling=sandboxed will run 'Compiling //foo/bar/baz' with the 'local' strategy, but reversing the order would run it with 'sandboxed'.
--[no]subcommands [-s] default: "false"
Display the subcommands executed during a build.
--test_arg=<a string> multiple uses are accumulated
Specifies additional options and arguments that should be passed to the test executable. Can be used multiple times to specify several arguments. If multiple tests are executed, each of them will receive identical arguments. Used only by the 'bazel test' command.
--test_filter=<a string> default: see description
Specifies a filter to forward to the test framework. Used to limit the tests run. Note that this does not affect which targets are built.
--[no]test_keep_going default: "true"
When disabled, any non-passing test will cause the entire build to stop. By default all tests are run, even if some do not pass.
--test_lang_filters=<comma-separated list of options> default: ""
Specifies a comma-separated list of test languages. Each language can be optionally preceded with '-' to specify excluded languages. Only those test targets will be found that are written in the specified languages. The name used for each language should be the same as the language prefix in the *_test rule, e.g. one of 'cc', 'java', 'py', etc. This option affects --build_tests_only behavior and the test command.
--test_output=<summary, errors, all or streamed> default: "summary"
Specifies desired output mode. Valid values are 'summary' to output only test status summary, 'errors' to also print test logs for failed tests, 'all' to print logs for all tests and 'streamed' to output logs for all tests in real time (this will force tests to be executed locally one at a time regardless of --test_strategy value).
--test_result_expiration=<an integer> default: "-1"
This option is deprecated and has no effect.
--test_sharding_strategy=<explicit or disabled> default: "explicit"
Specify strategy for test sharding: 'explicit' to only use sharding if the 'shard_count' BUILD attribute is present. 'disabled' to never use test sharding.
--test_size_filters=<comma-separated list of values: small, medium, large or enormous> default: ""
Specifies a comma-separated list of test sizes. Each size can be optionally preceded with '-' to specify excluded sizes. Only those test targets will be found that contain at least one included size and do not contain any excluded sizes. This option affects --build_tests_only behavior and the test command.
--test_strategy=<a string> default: ""
Specifies which strategy to use when running tests.
--test_summary=<short, terse, detailed, none or testcase> default: "short"
Specifies the desired format ot the test summary. Valid values are ' short' to print information only about tests executed, 'terse', to print information only about unsuccessful tests that were run, ' detailed' to print detailed information about failed test cases, and ' none' to omit the summary.
--test_tag_filters=<comma-separated list of options> default: ""
Specifies a comma-separated list of test tags. Each tag can be optionally preceded with '-' to specify excluded tags. Only those test targets will be found that contain at least one included tag and do not contain any excluded tags. This option affects --build_tests_only behavior and the test command.
--test_timeout_filters=<comma-separated list of values: short, moderate, long or eternal> default: ""
Specifies a comma-separated list of test timeouts. Each timeout can be optionally preceded with '-' to specify excluded timeouts. Only those test targets will be found that contain at least one included timeout and do not contain any excluded timeouts. This option affects --build_tests_only behavior and the test command.
--test_tmpdir=<a path> default: see description
Specifies the base temporary directory for 'bazel test' to use.
--[no]translations default: "auto"
Translate Java messages; bundle all translations into the jar for each affected rule.
--[no]use_ijars default: "true"
If enabled, this option causes Java compilation to use interface jars. This will result in faster incremental compilation, but error messages can be different.
--[no]verbose_failures default: "false"
If a command fails, print out the full command line.

Canonicalize-flags Options

Options that control the output of the command:
--[no]canonicalize_policy default: "false"
Output the canonical policy, after expansion and filtering. To keep the output clean, the canonicalized command arguments will NOT be shown when this option is set to true. Note that the command specified by --for_command affects the filtered policy, and if none is specified, the default command is ' build'.
Tags: affects_outputs, terminal_output
--[no]show_warnings default: "false"
Output parser warnings to standard error (e.g. for conflicting flag options).
Tags: affects_outputs, terminal_output
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--for_command=<a string> default: "build"
The command for which the options should be canonicalized.
Tags: affects_outputs, terminal_output
--invocation_policy=<a string> default: ""
Applies an invocation policy to the options to be canonicalized.
Tags: affects_outputs, terminal_output

Clean Options

Inherits all options from build.

Options that control the output of the command:
--[no]async default: "false"
If true, output cleaning is asynchronous. When this command completes, it will be safe to execute new commands in the same client, even though the deletion may continue in the background.
Tags: host_machine_resource_optimizations
--[no]expunge default: "false"
If true, clean removes the entire working tree for this bazel instance, which includes all bazel-created temporary and build output files, and stops the bazel server if it is running.
Tags: host_machine_resource_optimizations
--expunge_async
If specified, clean asynchronously removes the entire working tree for this % {product} instance, which includes all bazel-created temporary and build output files, and stops the bazel server if it is running. When this command completes, it will be safe to execute new commands in the same client, even though the deletion may continue in the background.
Expands to:
  --expunge
  --async

Tags: host_machine_resource_optimizations

Config Options

Coverage Options

Inherits all options from test.

Cquery Options

Inherits all options from build.

Options relating to query output and semantics:
--aspect_deps=<off, conservative or precise> default: "conservative"
How to resolve aspect dependencies when the output format is one of {xml,proto, record}. 'off' means no aspect dependencies are resolved, ' conservative' (the default) means all declared aspect dependencies are added regardless of whether they are given the rule class of direct dependencies, 'precise' means that only those aspects are added that are possibly active given the rule class of the direct dependencies. Note that precise mode requires loading other packages to evaluate a single target thus making it slower than the other modes. Also note that even precise mode is not completely precise: the decision whether to compute an aspect is decided in the analysis phase, which is not run during 'bazel query'.
Tags: build_file_semantics
--[no]implicit_deps default: "true"
If enabled, implicit dependencies will be included in the dependency graph over which the query operates. An implicit dependency is one that is not explicitly specified in the BUILD file but added by bazel.
Tags: build_file_semantics
--[no]nodep_deps default: "true"
If enabled, deps from "nodep" attributes will be included in the dependency graph over which the query operates. A common example of a " nodep" attribute is "visibility". Run and parse the output of `info build-language` to learn about all the "nodep" attributes in the build language.
Tags: build_file_semantics
--output=<a string> default: "label"
The format in which the cquery results should be printed. Allowed values for cquery are: label, textproto, transitions, proto. If you select ' transitions', you also have to specify the --transitions=(lite|full) option.
Tags: terminal_output
--[no]proto:default_values default: "true"
If true, attributes whose value is not explicitly specified in the BUILD file are included; otherwise they are omitted. This option is applicable to -- output=proto
Tags: terminal_output
--[no]proto:flatten_selects default: "true"
If enabled, configurable attributes created by select() are flattened. For list types the flattened representation is a list containing each value of the select map exactly once. Scalar types are flattened to null.
Tags: build_file_semantics
--[no]proto:include_configurations default: "true"
if enabled, proto output will include information about configurations. When disabled,cquery proto output format resembles query output format.
Tags: affects_outputs
--[no]proto:locations default: "true"
Whether to output location information in proto output at all.
Tags: terminal_output
--proto:output_rule_attrs=<comma-separated list of options> default: "all"
Comma separated list of attributes to include in output. Defaults to all attributes. Set to empty string to not output any attribute. This option is applicable to --output=proto.
Tags: terminal_output
--[no]proto:rule_inputs_and_outputs default: "true"
Whether or not to populate the rule_input and rule_output fields.
Tags: terminal_output
--[no]relative_locations default: "false"
If true, the location of BUILD files in xml and proto outputs will be relative. By default, the location output is an absolute path and will not be consistent across machines. You can set this option to true to have a consistent result across machines.
Tags: terminal_output
--show_config_fragments=<off, direct or transitive> default: "off"
Shows the configuration fragments required by a rule and its transitive dependencies. This can be useful for evaluating how much a configured target graph can be trimmed.
Tags: affects_outputs
--[no]tool_deps default: "true"
Query: If disabled, dependencies on 'host configuration' or ' execution' targets will not be included in the dependency graph over which the query operates. A 'host configuration' dependency edge, such as the one from any 'proto_library' rule to the Protocol Compiler, usually points to a tool executed during the build rather than a part of the same ' target' program. Cquery: If disabled, filters out all configured targets which cross a host or execution transition from the top-level target that discovered this configured target. That means if the top-level target is in the target configuration, only configured targets also in the target configuration will be returned. If the top-level target is in the host configuration, only host configured targets will be returned.
Tags: build_file_semantics
--transitions=<full, lite or none> default: "none"
The format in which cquery will print transition information.
Tags: affects_outputs
--universe_scope=<comma-separated list of options> default: ""
A comma-separated set of target patterns (additive and subtractive). The query may be performed in the universe defined by the transitive closure of the specified targets. This option is used for the query and cquery commands. For cquery, the input to this option is the targets all answers are built under and so this option may affect configurations and transitions. If this option is not specified, the top-level targets are assumed to be the targets parsed from the query expression. Note: For cquery, not specifying this option may cause the build to break if targets parsed from the query expression are not buildable with top-level options.
Tags: loading_and_analysis
Options that control build execution:
Whether to make direct file system calls to create symlink trees
Tags: loading_and_analysis, execution, experimental
--[no]experimental_strict_fileset_output default: "false"
If this option is enabled, filesets will treat all output artifacts as regular files. They will not traverse directories or be sensitive to symlinks.
Tags: execution
--modify_execution_info=<regex=[+-]key,regex=[+-]key,...> default: ""
Add or remove keys from an action's execution info based on action mnemonic. Applies only to actions which support execution info. Many common actions support execution info, e.g. Genrule, CppCompile, Javac, SkylarkAction, TestRunner. When specifying multiple values, order matters because many regexes may apply to the same mnemonic. Syntax: "regex=[+-]key,[+-]key,...". Examples: '.*=+x,.*=-y,.*=+z' adds 'x' and 'z' to, and removes 'y' from, the execution info for all actions. 'Genrule=+requires-x' adds 'requires-x' to the execution info for all Genrule actions. '(?!Genrule).*=-requires-x' removes 'requires-x' from the execution info for all non-Genrule actions.
Tags: execution, affects_outputs, loading_and_analysis
--persistent_android_resource_processor
Enable the persistent Android resource processor by using workers.
Expands to:
  --internal_persistent_busybox_tools
  --strategy=AaptPackage=worker
  --strategy=AndroidResourceParser=worker
  --strategy=AndroidResourceValidator=worker
  --strategy=AndroidResourceCompiler=worker
  --strategy=RClassGenerator=worker
  --strategy=AndroidResourceLink=worker
  --strategy=AndroidAapt2=worker
  --strategy=AndroidAssetMerger=worker
  --strategy=AndroidResourceMerger=worker
  --strategy=AndroidCompiledResourceMerger=worker

Tags: host_machine_resource_optimizations, execution
Options that configure the toolchain used for action execution:
--android_aapt=<aapt or aapt2> default: "aapt2"
Selects the version of androidAaptVersion to use for android_binary rules.Flag to help the test and transition to aapt2.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_compiler=<a string> default: see description
The Android target compiler.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_crosstool_top=<a build target label> default: "//external:android/crosstool"
The location of the C++ compiler used for Android builds.
Tags: affects_outputs, changes_inputs, loading_and_analysis, loses_incremental_state
--android_grte_top=<a label> default: see description
The Android target grte_top.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--android_manifest_merger=<legacy, android or force_android> default: "android"
Selects the manifest merger to use for android_binary rules. Flag to help thetransition to the Android manifest merger from the legacy merger.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--android_sdk=<a build target label> default: "@bazel_tools//tools/android:sdk"
Specifies Android SDK/platform that is used to build Android applications.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--apple_compiler=<a string> default: see description
The Apple target compiler. Useful for selecting variants of a toolchain (e.g. xcode-beta).
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--apple_crosstool_top=<a build target label> default: "@bazel_tools//tools/cpp:toolchain"
The label of the crosstool package to be used in Apple and Objc rules and their dependencies.
Tags: loses_incremental_state, changes_inputs
--apple_grte_top=<a build target label> default: see description
The Apple target grte_top.
Tags: changes_inputs, loading_and_analysis, loses_incremental_state
--apple_sdk=<a build target label> default: see description
Location of target that will provide the appropriate Apple SDK for the current build configuration.
Tags: affects_outputs, loading_and_analysis
--cc_output_directory_tag=<a string> default: ""
Specifies a suffix to be added to the configuration directory.
Tags: affects_outputs
--compiler=<a string> default: see description
The C++ compiler to use for compiling the target.
Tags: loading_and_analysis, execution
--coverage_report_generator=<a build target label> default: "@bazel_tools//tools/test:coverage_report_generator"
Location of the binary that is used to generate coverage reports. This must currently be a filegroup that contains a single file, the binary. Defaults to '//tools/test:coverage_report_generator'.
Tags: changes_inputs, affects_outputs, loading_and_analysis
--coverage_support=<a build target label> default: "@bazel_tools//tools/test:coverage_support"
Location of support files that are required on the inputs of every test action that collects code coverage. Defaults to '//tools/test: coverage_support'.
Tags: changes_inputs, affects_outputs, loading_and_analysis
--crosstool_top=<a build target label> default: "@bazel_tools//tools/cpp:toolchain"
The label of the crosstool package to be used for compiling C++ code.
Tags: loading_and_analysis, changes_inputs, affects_outputs
--custom_malloc=<a build target label> default: see description
Specifies a custom malloc implementation. This setting overrides malloc attributes in build rules.
Tags: changes_inputs, affects_outputs
--enabled_toolchain_types=<a build target label> default: ""
Enable toolchain resolution for the given toolchain type, if the rules used support that. This does not directly change the core Bazel machinery, but is a signal to participating rule implementations that toolchain resolution should be used.
Tags: loading_and_analysis
--experimental_add_exec_constraints_to_targets=<a '<RegexFilter>=<label1>[,<label2>,...]' assignment> multiple uses are accumulated
List of comma-separated regular expressions, each optionally prefixed by - (negative expression), assigned (=) to a list of comma-separated constraint value targets. If a target matches no negative expression and at least one positive expression its toolchain resolution will be performed as if it had declared the constraint values as execution constraints. Example: //demo,- test=@platforms//cpus:x86_64 will add 'x86_64' to any target under //demo except for those whose name contains 'test'.
Tags: loading_and_analysis
--[no]experimental_enable_objc_cc_deps default: "true"
Allows objc_* rules to depend on cc_library and causes any objc dependencies to be built with --cpu set to "ios_<--ios_cpu>" for any values in --ios_multi_cpu.
Tags: loading_and_analysis, incompatible_change
--extra_execution_platforms=<comma-separated list of options> multiple uses are accumulated
The platforms that are available as execution platforms to run actions. Platforms can be specified by exact target, or as a target pattern. These platforms will be considered before those declared in the WORKSPACE file by register_execution_platforms().
Tags: execution
--extra_toolchains=<comma-separated list of options> multiple uses are accumulated
The toolchain rules to be considered during toolchain resolution. Toolchains can be specified by exact target, or as a target pattern. These toolchains will be considered before those declared in the WORKSPACE file by register_toolchains().
Tags: affects_outputs, changes_inputs, loading_and_analysis
--grte_top=<a label> default: see description
A label to a checked-in libc library. The default value is selected by the crosstool toolchain, and you almost never need to override it.
Tags: action_command_lines, affects_outputs
--host_compiler=<a string> default: see description
The C++ compiler to use for host compilation. It is ignored if -- host_crosstool_top is not set.
Tags: loading_and_analysis, execution
--host_crosstool_top=<a build target label> default: see description
By default, the --crosstool_top and --compiler options are also used for the host configuration. If this flag is provided, Bazel uses the default libc and compiler for the given crosstool_top.
Tags: loading_and_analysis, changes_inputs, affects_outputs
--host_grte_top=<a label> default: see description
If specified, this setting overrides the libc top-level directory (--grte_top) for the host configuration.
Tags: action_command_lines, affects_outputs
--host_platform=<a build target label> default: ""
The label of a platform rule that describes the host system.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--[no]incompatible_disable_expand_if_all_available_in_flag_set default: "true"
If true, Bazel will not allow specifying expand_if_all_available in flag_sets (see https://github.com/bazelbuild/bazel/issues/7008 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_dont_enable_host_nonhost_crosstool_features default: "true"
If true, Bazel will not enable 'host' and 'nonhost' features in the c++ toolchain (see https://github.com/bazelbuild/bazel/issues/7407 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_make_thinlto_command_lines_standalone default: "true"
If true, Bazel will not reuse C++ link action command lines for lto indexing command lines (see https://github.com/bazelbuild/bazel/issues/6791 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_prohibit_aapt1 default: "true"
End support for aapt in Android rules. To resolve issues when migrating your app to build with aapt2, see https://developer.android.com/studio/command- line/aapt2#aapt2_changes
Tags: loses_incremental_state, affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_cpu_and_compiler_attributes_from_cc_toolchain default: "true"
If true, Bazel will complain when cc_toolchain.cpu and cc_toolchain.compiler attribtues are set (see https://github.com/bazelbuild/bazel/issues/7075 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_legacy_whole_archive default: "true"
If true, Bazel will not link library dependencies as whole archive by default (see https://github.com/bazelbuild/bazel/issues/7362 for migration instructions).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_require_ctx_in_configure_features default: "true"
If true, Bazel will require 'ctx' parameter in to cc_common. configure_features (see https://github.com/bazelbuild/bazel/issues/7793 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_strict_objc_module_maps default: "false"
Propagates Objective-C module maps only to direct dependencies in the ' objc' provider, not to all transitive dependencies.
Tags: changes_inputs, loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]interface_shared_objects default: "true"
Use interface shared objects if supported by the toolchain. All ELF toolchains currently support this setting.
Tags: loading_and_analysis, affects_outputs, affects_outputs
--ios_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the iOS SDK to use to build iOS applications. If unspecified, uses default iOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--macos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the macOS SDK to use to build macOS applications. If unspecified, uses default macOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--minimum_os_version=<a string> default: see description
The minimum OS version which your compilation targets.
Tags: loading_and_analysis, affects_outputs
--objc_header_scanner_tool=<a build target label> default: "@bazel_tools//tools/objc:header_scanner"
Location of tool to scan Objective-C code for inclusions and output a . headers_list file.
Tags: changes_inputs
--platform_mappings=<a relative path> default: ""
The location of a mapping file that describes which platform to use if none is set or which flags to set when a platform already exists. Must be relative to the main workspace root. Defaults to 'platform_mappings' (a file directly under the workspace root).
Tags: affects_outputs, changes_inputs, loading_and_analysis
--platforms=<a build target label> default: ""
The labels of the platform rules describing the target platforms for the current command.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--python2_path=<a string> default: see description
Deprecated, no-op. Disabled by `--incompatible_use_python_toolchains`.
Tags: no_op, deprecated
--python3_path=<a string> default: see description
Deprecated, no-op. Disabled by `--incompatible_use_python_toolchains`.
Tags: no_op, deprecated
--python_path=<a string> default: see description
The absolute path of the Python interpreter invoked to run Python targets on the target platform. Deprecated; disabled by -- incompatible_use_python_toolchains.
Tags: loading_and_analysis, affects_outputs
--python_top=<a build target label> default: see description
The label of a py_runtime representing the Python interpreter invoked to run Python targets on the target platform. Deprecated; disabled by -- incompatible_use_python_toolchains.
Tags: loading_and_analysis, affects_outputs
--target_platform_fallback=<a build target label> default: "@bazel_tools//platforms:target_platform"
The label of a platform rule that should be used if no target platform is set and no platform mapping matches the current set of flags.
Tags: affects_outputs, changes_inputs, loading_and_analysis
--tvos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the tvOS SDK to use to build tvOS applications. If unspecified, uses default tvOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--watchos_sdk_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Specifies the version of the watchOS SDK to use to build watchOS applications. If unspecified, uses default watchOS SDK version from 'xcode_version'.
Tags: loses_incremental_state
--xcode_version=<a string> default: see description
If specified, uses Xcode of the given version for relevant build actions. If unspecified, uses the executor default version of Xcode.
Tags: loses_incremental_state
--xcode_version_config=<a build target label> default: "@local_config_xcode//:host_xcodes"
The label of the xcode_config rule to be used for selecting the Xcode version in the build configuration.
Tags: loses_incremental_state, loading_and_analysis
Options that control the output of the command:
--[no]apple_enable_auto_dsym_dbg default: "false"
Whether to force enable generating debug symbol(.dSYM) file(s) for dbg builds.
Tags: affects_outputs, action_command_lines
--[no]apple_generate_dsym default: "false"
Whether to generate debug symbol(.dSYM) file(s).
Tags: affects_outputs, action_command_lines
If true, build runfiles symlink forests for all targets. If false, write only manifests when possible.
Tags: affects_outputs
--[no]build_runfile_manifests default: "true"
If true, write runfiles manifests for all targets. If false, omit them.
Tags: affects_outputs
--[no]build_test_dwp default: "false"
If enabled, when building C++ tests statically and with fission the .dwp file for the test binary will be automatically built as well.
Tags: loading_and_analysis, affects_outputs
--cc_proto_library_header_suffixes=<comma-separated list of options> default: ".pb.h"
Sets the prefixes of header files that a cc_proto_library creates.
Tags: affects_outputs, loading_and_analysis
--cc_proto_library_source_suffixes=<comma-separated list of options> default: ".pb.cc"
Sets the prefixes of source files that a cc_proto_library creates.
Tags: affects_outputs, loading_and_analysis
--[no]enable_apple_binary_native_protos default: "true"
If set, apple_binary will generate and link objc protos into the output binary.
Tags: affects_outputs, incompatible_change
--[no]experimental_objc_enable_module_maps default: "false"
Enables module map generation and interpretation.
Tags: action_command_lines
--[no]experimental_proto_extra_actions default: "false"
Run extra actions for alternative Java api versions in a proto_library.
Tags: affects_outputs, loading_and_analysis, experimental
--[no]experimental_save_feature_state default: "false"
Save the state of enabled and requested feautres as an output of compilation.
Tags: affects_outputs, experimental
--fission=<a set of compilation modes> default: "no"
Specifies which compilation modes use fission for C++ compilations and links. May be any combination of {'fastbuild', 'dbg', 'opt'} or the special values 'yes' to enable all modes and 'no' to disable all modes.
Tags: loading_and_analysis, action_command_lines, affects_outputs
--[no]legacy_external_runfiles default: "true"
If true, build runfiles symlink forests for external repositories under . runfiles/wsname/external/repo (in addition to .runfiles/repo).
Tags: affects_outputs
--[no]objc_generate_linkmap default: "false"
Specifies whether to generate a linkmap file.
Tags: affects_outputs
--[no]save_temps default: "false"
If set, temporary outputs from gcc will be saved. These include .s files (assembler code), .i files (preprocessed C) and .ii files (preprocessed C++).
Tags: affects_outputs
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--action_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies the set of environment variables available to actions. Variables can be either specified by name, in which case the value will be taken from the invocation environment, or by the name=value pair which sets the value independent of the invocation environment. This option can be used multiple times; for options given for the same variable, the latest wins, options for different variables accumulate.
Tags: action_command_lines
--android_cpu=<a string> default: "armeabi-v7a"
The Android target CPU.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]android_databinding_use_v3_4_args default: "false"
Use android databinding v2 with 3.4.0 argument
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--android_dynamic_mode=<off, default or fully> default: "off"
Determines whether C++ deps of Android rules will be linked dynamically when a cc_binary does not explicitly create a shared library. 'default' means bazel will choose whether to link dynamically. 'fully' means all libraries will be linked dynamically. 'off' means that all libraries will be linked in mostly static mode.
Tags: affects_outputs, loading_and_analysis
--android_manifest_merger_order=<alphabetical, alphabetical_by_configuration or dependency> default: "alphabetical"
Sets the order of manifests passed to the manifest merger for Android binaries. ALPHABETICAL means manifests are sorted by path relative to the execroot. ALPHABETICAL_BY_CONFIGURATION means manifests are sorted by paths relative to the configuration directory within the output directory. DEPENDENCY means manifests are ordered with each library's manifest coming before the manifests of its dependencies.
Tags: action_command_lines, execution
--[no]android_resource_shrinking default: "false"
Enables resource shrinking for android_binary APKs that use ProGuard.
Tags: affects_outputs, loading_and_analysis
--apple_bitcode=<none, embedded_markers or embedded> default: "none"
Specify the Apple bitcode mode for compile steps. Values: 'none', ' embedded_markers', 'embedded'.
Tags: loses_incremental_state
--[no]build_python_zip default: "auto"
Build python executable zip; on on Windows, off on other platforms
Tags: affects_outputs
--[no]collect_code_coverage default: "false"
If specified, Bazel will instrument code (using offline instrumentation where possible) and will collect coverage information during tests. Only targets that match --instrumentation_filter will be affected. Usually this option should not be specified directly - 'bazel coverage' command should be used instead.
Tags: affects_outputs
--compilation_mode=<fastbuild, dbg or opt> [-c] default: "fastbuild"
Specify the mode the binary will be built in. Values: 'fastbuild', ' dbg', 'opt'.
Tags: affects_outputs, action_command_lines
--conlyopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C source files.
Tags: action_command_lines, affects_outputs
--copt=<a string> multiple uses are accumulated
Additional options to pass to gcc.
Tags: action_command_lines, affects_outputs
--cpu=<a string> default: ""
The target CPU.
Tags: changes_inputs, affects_outputs
--cs_fdo_absolute_path=<a string> default: see description
Use CSFDO profile information to optimize compilation. Specify the absolute path name of the zip file containing the profile file, a raw or an indexed LLVM profile file.
Tags: affects_outputs
--cs_fdo_instrument=<a string> default: see description
Generate binaries with context sensitive FDO instrumentation. With Clang/LLVM compiler, it also accepts the directory name under which the raw profile file (s) will be dumped at runtime.
Tags: affects_outputs
--cs_fdo_profile=<a build target label> default: see description
The cs_fdo_profile representing the context sensitive profile to be used for optimization.
Tags: affects_outputs
--cxxopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C++ source files.
Tags: action_command_lines, affects_outputs
--define=<a 'name=value' assignment> multiple uses are accumulated
Each --define option specifies an assignment for a build variable.
Tags: changes_inputs, affects_outputs
--dynamic_mode=<off, default or fully> default: "default"
Determines whether C++ binaries will be linked dynamically. 'default' means Bazel will choose whether to link dynamically. 'fully' means all libraries will be linked dynamically. 'off' means that all libraries will be linked in mostly static mode.
Tags: loading_and_analysis, affects_outputs
--[no]enable_fdo_profile_absolute_path default: "true"
If set, use of fdo_absolute_profile_path will raise an error.
Tags: affects_outputs
--[no]enable_runfiles default: "auto"
Enable runfiles symlink tree; By default, it's off on Windows, on on other platforms.
Tags: affects_outputs
--experimental_action_listener=<a build target label> multiple uses are accumulated
Use action_listener to attach an extra_action to existing build actions.
Tags: execution, experimental
--[no]experimental_android_compress_java_resources default: "false"
Compress Java resources in APKs
Tags: affects_outputs, loading_and_analysis, experimental
--[no]experimental_android_databinding_v2 default: "false"
Use android databinding v2
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--[no]experimental_android_resource_shrinking default: "false"
Enables resource shrinking for android_binary APKs that use ProGuard.
Tags: affects_outputs, loading_and_analysis
--[no]experimental_android_rewrite_dexes_with_rex default: "false"
use rex tool to rewrite dex files
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--experimental_objc_fastbuild_options=<comma-separated list of options> default: "-O0,-DDEBUG=1"
Uses these strings as objc fastbuild compiler options.
Tags: action_command_lines
--[no]experimental_omitfp default: "false"
If true, use libunwind for stack unwinding, and compile with -fomit-frame- pointer and -fasynchronous-unwind-tables.
Tags: action_command_lines, affects_outputs, experimental
--[no]experimental_use_llvm_covmap default: "false"
If specified, Bazel will generate llvm-cov coverage map information rather than gcov when collect_code_coverage is enabled.
Tags: changes_inputs, affects_outputs, loading_and_analysis, experimental
--fat_apk_cpu=<comma-separated list of options> default: "armeabi-v7a"
Setting this option enables fat APKs, which contain native binaries for all specified target architectures, e.g., --fat_apk_cpu=x86,armeabi-v7a. If this flag is specified, then --android_cpu is ignored for dependencies of android_binary rules.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--fdo_instrument=<a string> default: see description
Generate binaries with FDO instrumentation. With Clang/LLVM compiler, it also accepts the directory name under which the raw profile file(s) will be dumped at runtime.
Tags: affects_outputs
--fdo_optimize=<a string> default: see description
Use FDO profile information to optimize compilation. Specify the name of the zip file containing the .gcda file tree, or an afdo file containing an auto profile. This flag also accepts files specified as labels, for example //foo/bar:file.afdo. Such labels must refer to input files; you may need to add an exports_files directive to the corresponding package to make the file visible to Bazel. It also accepts a raw or an indexed LLVM profile file. This flag will be superseded by fdo_profile rule.
Tags: affects_outputs
--fdo_prefetch_hints=<a build target label> default: see description
Use cache prefetch hints.
Tags: affects_outputs
--fdo_profile=<a build target label> default: see description
The fdo_profile representing the profile to be used for optimization.
Tags: affects_outputs
--features=<a string> multiple uses are accumulated
The given features will be enabled or disabled by default for all packages. Specifying -<feature> will disable the feature globally. Negative features always override positive ones. This flag is used to enable rolling out default feature changes without a Bazel release.
Tags: changes_inputs, affects_outputs
--[no]force_pic default: "false"
If enabled, all C++ compilations produce position-independent code ("- fPIC"), links prefer PIC pre-built libraries over non-PIC libraries, and links produce position-independent executables ("-pie").
Tags: loading_and_analysis, affects_outputs
--force_python=<PY2 or PY3> default: see description
Deprecated alias for `--python_version`. Disabled by `-- incompatible_remove_old_python_version_api`.
Tags: loading_and_analysis, affects_outputs
--host_compilation_mode=<fastbuild, dbg or opt> default: "opt"
Specify the mode the tools used during the build will be built in. Values: ' fastbuild', 'dbg', 'opt'.
Tags: affects_outputs, action_command_lines
--host_conlyopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when compiling C source files for host tools.
Tags: action_command_lines, affects_outputs
--host_copt=<a string> multiple uses are accumulated
Additional options to pass to gcc for host tools.
Tags: action_command_lines, affects_outputs
--host_cpu=<a string> default: ""
The host CPU.
Tags: changes_inputs, affects_outputs
--host_cxxopt=<a string> multiple uses are accumulated
Additional options to pass to gcc for host tools.
Tags: action_command_lines, affects_outputs
--host_force_python=<PY2 or PY3> default: see description
Overrides the Python version for the host configuration. Can be "PY2" or "PY3".
Tags: loading_and_analysis, affects_outputs
--host_linkopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when linking host tools.
Tags: action_command_lines, affects_outputs
--host_swiftcopt=<a string> multiple uses are accumulated
Additional options to pass to swiftc for host tools.
Tags: action_command_lines, affects_outputs
--[no]incompatible_merge_genfiles_directory default: "true"
If true, the genfiles directory is folded into the bin directory.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_platforms_repo_for_constraints default: "false"
If true, constraint settings from @bazel_tools are removed.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]instrument_test_targets default: "false"
When coverage is enabled, specifies whether to consider instrumenting test rules. When set, test rules included by --instrumentation_filter are instrumented. Otherwise, test rules are always excluded from coverage instrumentation.
Tags: affects_outputs
--instrumentation_filter=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths> default: "-/javatests[/:],-/test/java[/:]"
When coverage is enabled, only rules with names included by the specified regex- based filter will be instrumented. Rules prefixed with '-' are excluded instead. Note that only non-test rules are instrumented unless -- instrument_test_targets is enabled.
Tags: affects_outputs
--ios_cpu=<a string> default: "x86_64"
Specifies to target CPU of iOS compilation.
Tags: no_op, deprecated
--ios_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible iOS version for target simulators and devices. If unspecified, uses 'ios_sdk_version'.
Tags: loses_incremental_state
--ios_multi_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures to build an ios_application with. The result is a universal binary containing all specified architectures.
Tags: loses_incremental_state, loading_and_analysis
--[no]legacy_whole_archive default: "true"
Deprecated, superseded by --incompatible_remove_legacy_whole_archive (see https: //github.com/bazelbuild/bazel/issues/7362 for details). When on, use --whole- archive for cc_binary rules that have linkshared=1 and either linkstatic=1 or '-static' in linkopts. This is for backwards compatibility only. A better alternative is to use alwayslink=1 where required.
Tags: action_command_lines, affects_outputs, deprecated
--linkopt=<a string> multiple uses are accumulated
Additional option to pass to gcc when linking.
Tags: action_command_lines, affects_outputs
--ltobackendopt=<a string> multiple uses are accumulated
Additional option to pass to the LTO backend step (under --features=thin_lto).
Tags: action_command_lines, affects_outputs
--ltoindexopt=<a string> multiple uses are accumulated
Additional option to pass to the LTO indexing step (under --features=thin_lto).
Tags: action_command_lines, affects_outputs
--macos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple macOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--macos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible macOS version for targets. If unspecified, uses ' macos_sdk_version'.
Tags: loses_incremental_state
--[no]objc_debug_with_GLIBCXX default: "false"
If set, and compilation mode is set to 'dbg', define GLIBCXX_DEBUG, GLIBCXX_DEBUG_PEDANTIC and GLIBCPP_CONCEPT_CHECKS.
Tags: action_command_lines
--[no]objc_enable_binary_stripping default: "false"
Whether to perform symbol and dead-code strippings on linked binaries. Binary strippings will be performed if both this flag and --compilation_mode=opt are specified.
Tags: action_command_lines
--objccopt=<a string> multiple uses are accumulated
Additional options to pass to Objective C compilation.
Tags: action_command_lines
--per_file_copt=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths followed by an @ and a comma separated list of options> multiple uses are accumulated
Additional options to selectively pass to gcc when compiling certain files. This option can be passed multiple times. Syntax: regex_filter@option_1, option_2,...,option_n. Where regex_filter stands for a list of include and exclude regular expression patterns (Also see --instrumentation_filter). option_1 to option_n stand for arbitrary command line options. If an option contains a comma it has to be quoted with a backslash. Options can contain @. Only the first @ is used to split the string. Example: --per_file_copt=//foo/. *\.cc,-//foo/bar\.cc@-O0 adds the -O0 command line option to the gcc command line of all cc files in //foo/ except bar.cc.
Tags: action_command_lines, affects_outputs
--per_file_ltobackendopt=<a comma-separated list of regex expressions with prefix '-' specifying excluded paths followed by an @ and a comma separated list of options> multiple uses are accumulated
Additional options to selectively pass to LTO backend (under -- features=thin_lto) when compiling certain backend objects. This option can be passed multiple times. Syntax: regex_filter@option_1,option_2,...,option_n. Where regex_filter stands for a list of include and exclude regular expression patterns. option_1 to option_n stand for arbitrary command line options. If an option contains a comma it has to be quoted with a backslash. Options can contain @. Only the first @ is used to split the string. Example: -- per_file_ltobackendopt=//foo/.*\.o,-//foo/bar\.o@-O0 adds the -O0 command line option to the LTO backend command line of all o files in //foo/ except bar.o.
Tags: action_command_lines, affects_outputs
--platform_suffix=<a string> default: see description
Specifies a suffix to be added to the configuration directory.
Tags: loses_incremental_state, affects_outputs, loading_and_analysis
--repo_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies additional environment variables to be available only for repository rules. Note that repository rules see the full environment anyway, but in this way configuration information can be passed to repositories through options without invalidating the action graph.
Tags: action_command_lines
--run_under=<a prefix in front of command> default: see description
Prefix to insert in front of command before running. Examples: --run_under=valgrind --run_under=strace --run_under='strace -c' --run_under='valgrind --quiet --num-callers=20' --run_under=//package:target --run_under='//package:target --options'
Tags: action_command_lines
--[no]share_native_deps default: "true"
If true, native libraries that contain identical functionality will be shared among different targets
Tags: loading_and_analysis, affects_outputs
--[no]stamp default: "false"
Stamp binaries with the date, username, hostname, workspace information, etc.
Tags: affects_outputs
--strip=<always, sometimes or never> default: "sometimes"
Specifies whether to strip binaries and shared libraries (using "-Wl,-- strip-debug"). The default value of 'sometimes' means strip iff -- compilation_mode=fastbuild.
Tags: affects_outputs
--stripopt=<a string> multiple uses are accumulated
Additional options to pass to strip when generating a '<name>. stripped' binary.
Tags: action_command_lines, affects_outputs
--swiftcopt=<a string> multiple uses are accumulated
Additional options to pass to Swift compilation.
Tags: action_command_lines
--tvos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple tvOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--tvos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible tvOS version for target simulators and devices. If unspecified, uses 'tvos_sdk_version'.
Tags: loses_incremental_state
--watchos_cpus=<comma-separated list of options> multiple uses are accumulated
Comma-separated list of architectures for which to build Apple watchOS binaries.
Tags: loses_incremental_state, loading_and_analysis
--watchos_minimum_os=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
Minimum compatible watchOS version for target simulators and devices. If unspecified, uses 'watchos_sdk_version'.
Tags: loses_incremental_state
--xbinary_fdo=<a build target label> default: see description
Use XbinaryFDO profile information to optimize compilation. Specify the name of default cross binary profile. When the option is used together with -- fdo_instrument/--fdo_optimize/--fdo_profile, those options will always prevail as if xbinary_fdo is never specified.
Tags: affects_outputs
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--auto_cpu_environment_group=<a build target label> default: ""
Declare the environment_group to use for automatically mapping cpu values to target_environment values.
Tags: changes_inputs, loading_and_analysis, experimental
--[no]check_licenses default: "false"
Check that licensing constraints imposed by dependent packages do not conflict with distribution modes of the targets being built. By default, licenses are not checked.
Tags: build_file_semantics
--[no]check_visibility default: "true"
If disabled, visibility errors are demoted to warnings.
Tags: build_file_semantics
--[no]desugar_for_android default: "true"
Whether to desugar Java 8 bytecode before dexing.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]enforce_constraints default: "true"
Checks the environments each target is compatible with and reports errors if any target has dependencies that don't support the same environments
Tags: build_file_semantics
--[no]experimental_allow_android_library_deps_without_srcs default: "false"
Flag to help transition from allowing to disallowing srcs-less android_library rules with deps. The depot needs to be cleaned up to roll this out by default.
Tags: eagerness_to_exit, loading_and_analysis
--[no]experimental_check_desugar_deps default: "true"
Whether to double-check correct desugaring at Android binary level.
Tags: eagerness_to_exit, loading_and_analysis, experimental
--[no]experimental_desugar_java8_libs default: "false"
Whether to include supported Java 8 libraries in apps for legacy devices.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state, experimental
--experimental_import_deps_checking=<off, warning or error> default: "OFF"
When enabled, check whether the dependencies of an aar_import are complete. This enforcement can break the build, or can just result in warnings.
Tags: loading_and_analysis
--[no]experimental_java_proto_add_allowed_public_imports default: "false"
If true, add --allowed_public_imports to the java compile actions.
Tags: affects_outputs, loading_and_analysis, experimental
--experimental_strict_java_deps=<off, warn, error, strict or default> default: "default"
If true, checks that a Java target explicitly declares all directly used targets as dependencies.
Tags: build_file_semantics, eagerness_to_exit
--[no]incompatible_disable_native_android_rules default: "false"
If enabled, direct usage of the native Android rules is disabled. Please use the Starlark Android rules from https://github.com/bazelbuild/rules_android
Tags: eagerness_to_exit, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_validate_top_level_header_inclusions default: "false"
If true, Bazel will also validate top level directory header inclusions (see https://github.com/bazelbuild/bazel/issues/10047 for more information).
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]strict_filesets default: "false"
If this option is enabled, filesets crossing package boundaries are reported as errors. It does not work when check_fileset_dependencies_recursively is disabled.
Tags: build_file_semantics, eagerness_to_exit
--strict_proto_deps=<off, warn, error, strict or default> default: "error"
Unless OFF, checks that a proto_library target explicitly declares all directly used targets as dependencies.
Tags: build_file_semantics, eagerness_to_exit, incompatible_change
--[no]strict_system_includes default: "false"
If true, headers found through system include paths (-isystem) are also required to be declared.
Tags: loading_and_analysis, eagerness_to_exit
--target_environment=<a build target label> multiple uses are accumulated
Declares this build's target environment. Must be a label reference to an "environment" rule. If specified, all top-level targets must be compatible with this environment.
Tags: changes_inputs
Options that affect the signing outputs of a build:
--apk_signing_method=<v1, v2 or v1_v2> default: "v1_v2"
Implementation to use to sign APKs
Tags: action_command_lines, affects_outputs, loading_and_analysis
--default_ios_provisioning_profile=<a build target label> default: ""

Tags: changes_inputs
--[no]device_debug_entitlements default: "true"
If set, and compilation mode is not 'opt', objc apps will include debug entitlements when signing.
Tags: changes_inputs
--ios_signing_cert_name=<a string> default: see description
Certificate name to use for iOS signing. If not set will fall back to provisioning profile. May be the certificate's keychain identity preference or (substring) of the certificate's common name, as per codesign's man page (SIGNING IDENTITIES).
Tags: action_command_lines
This option affects semantics of the Starlark language or the build API accessible to BUILD files, .bzl files, or WORKSPACE files.:
--[no]incompatible_allow_python_version_transitions default: "true"
If true, Python rules use the new PY2/PY3 version semantics. For more information, see the documentation for `py_binary`'s `python_version` attribute.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_disallow_legacy_py_provider default: "true"
If set to true, native Python rules will neither produce nor consume the legacy "py" provider. Use PyInfo instead. Under this flag, passing the legacy provider to a Python target will be an error.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_remove_old_python_version_api default: "true"
If true, disables use of the `--force_python` flag and the `default_python_version` attribute for `py_binary` and `py_test`. Use the `-- python_version` flag and `python_version` attribute instead, which have exactly the same meaning. This flag also disables `select()`-ing over `-- host_force_python`.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
Options that govern the behavior of the test environment or test runner:
--[no]allow_analysis_failures default: "false"
If true, an analysis failure of a rule target results in the target's propagation of an instance of AnalysisFailureInfo containing the error description, instead of resulting in a build failure.
Tags: loading_and_analysis, experimental
--analysis_testing_deps_limit=<an integer> default: "500"
Sets the maximum number of transitive dependencies through a rule attribute with a for_analysis_testing configuration transition. Exceeding this limit will result in a rule error.
Tags: loading_and_analysis
--[no]break_build_on_parallel_dex2oat_failure default: "false"
If true dex2oat action failures will cause the build to break instead of executing dex2oat during test runtime.
Tags: loading_and_analysis, experimental
--[no]experimental_android_use_parallel_dex2oat default: "false"
Use dex2oat in parallel to possibly speed up android_test.
Tags: loading_and_analysis, host_machine_resource_optimizations, experimental
--[no]incompatible_windows_native_test_wrapper default: "true"
On Windows: if true, uses the C++ test wrapper to run tests, otherwise uses tools/test/test-setup.sh as on other platforms. On other platforms: no-op.
Tags: loading_and_analysis, test_runner, incompatible_change, triggered_by_all_incompatible_changes
--[no]ios_memleaks default: "false"
Enable checking for memory leaks in ios_test targets.
Tags: action_command_lines
--ios_simulator_device=<a string> default: see description
The device to simulate when running an iOS application in the simulator, e.g. 'iPhone 6'. You can get a list of devices by running 'xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--ios_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of iOS to run on the simulator when running or testing. This is ignored for ios_test rules if a target device is specified in the rule.
Tags: test_runner
--runs_per_test=<a positive integer or test_regex@runs. This flag may be passed more than once> multiple uses are accumulated
Specifies number of times to run each test. If any of those attempts fail for any reason, the whole test would be considered failed. Normally the value specified is just an integer. Example: --runs_per_test=3 will run all tests 3 times. Alternate syntax: regex_filter@runs_per_test. Where runs_per_test stands for an integer value and regex_filter stands for a list of include and exclude regular expression patterns (Also see --instrumentation_filter). Example: -- runs_per_test=//foo/.*,-//foo/bar/.*@3 runs all tests in //foo/ except those under foo/bar three times. This option can be passed multiple times.
--test_env=<a 'name=value' assignment with an optional value part> multiple uses are accumulated
Specifies additional environment variables to be injected into the test runner environment. Variables can be either specified by name, in which case its value will be read from the Bazel client environment, or by the name=value pair. This option can be used multiple times to specify several variables. Used only by the 'bazel test' command.
Tags: test_runner
--test_timeout=<a single integer or comma-separated list of 4 integers> default: "-1"
Override the default test timeout values for test timeouts (in secs). If a single positive integer value is specified it will override all categories. If 4 comma-separated integers are specified, they will override the timeouts for short, moderate, long and eternal (in that order). In either form, a value of -1 tells bazel to use its default timeouts for that category.
--tvos_simulator_device=<a string> default: see description
The device to simulate when running an tvOS application in the simulator, e.g. 'Apple TV 1080p'. You can get a list of devices by running 'xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--tvos_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of tvOS to run on the simulator when running or testing.
Tags: test_runner
--watchos_simulator_device=<a string> default: see description
The device to simulate when running an watchOS application in the simulator, e. g. 'Apple Watch - 38mm'. You can get a list of devices by running ' xcrun simctl list devicetypes' on the machine the simulator will be run on.
Tags: test_runner
--watchos_simulator_version=<a dotted version (for example '2.3' or '3.3alpha2.4')> default: see description
The version of watchOS to run on the simulator when running or testing.
Tags: test_runner
Options relating to query output and semantics:
--aspect_deps=<off, conservative or precise> default: "conservative"
How to resolve aspect dependencies when the output format is one of {xml,proto, record}. 'off' means no aspect dependencies are resolved, ' conservative' (the default) means all declared aspect dependencies are added regardless of whether they are given the rule class of direct dependencies, 'precise' means that only those aspects are added that are possibly active given the rule class of the direct dependencies. Note that precise mode requires loading other packages to evaluate a single target thus making it slower than the other modes. Also note that even precise mode is not completely precise: the decision whether to compute an aspect is decided in the analysis phase, which is not run during 'bazel query'.
Tags: build_file_semantics
--[no]implicit_deps default: "true"
If enabled, implicit dependencies will be included in the dependency graph over which the query operates. An implicit dependency is one that is not explicitly specified in the BUILD file but added by bazel.
Tags: build_file_semantics
--[no]nodep_deps default: "true"
If enabled, deps from "nodep" attributes will be included in the dependency graph over which the query operates. A common example of a " nodep" attribute is "visibility". Run and parse the output of `info build-language` to learn about all the "nodep" attributes in the build language.
Tags: build_file_semantics
--output=<a string> default: "label"
The format in which the cquery results should be printed. Allowed values for cquery are: label, textproto, transitions, proto. If you select ' transitions', you also have to specify the --transitions=(lite|full) option.
Tags: terminal_output
--[no]proto:default_values default: "true"
If true, attributes whose value is not explicitly specified in the BUILD file are included; otherwise they are omitted. This option is applicable to -- output=proto
Tags: terminal_output
--[no]proto:flatten_selects default: "true"
If enabled, configurable attributes created by select() are flattened. For list types the flattened representation is a list containing each value of the select map exactly once. Scalar types are flattened to null.
Tags: build_file_semantics
--[no]proto:include_configurations default: "true"
if enabled, proto output will include information about configurations. When disabled,cquery proto output format resembles query output format.
Tags: affects_outputs
--[no]proto:locations default: "true"
Whether to output location information in proto output at all.
Tags: terminal_output
--proto:output_rule_attrs=<comma-separated list of options> default: "all"
Comma separated list of attributes to include in output. Defaults to all attributes. Set to empty string to not output any attribute. This option is applicable to --output=proto.
Tags: terminal_output
--[no]proto:rule_inputs_and_outputs default: "true"
Whether or not to populate the rule_input and rule_output fields.
Tags: terminal_output
--[no]relative_locations default: "false"
If true, the location of BUILD files in xml and proto outputs will be relative. By default, the location output is an absolute path and will not be consistent across machines. You can set this option to true to have a consistent result across machines.
Tags: terminal_output
--show_config_fragments=<off, direct or transitive> default: "off"
Shows the configuration fragments required by a rule and its transitive dependencies. This can be useful for evaluating how much a configured target graph can be trimmed.
Tags: affects_outputs
--[no]tool_deps default: "true"
Query: If disabled, dependencies on 'host configuration' or ' execution' targets will not be included in the dependency graph over which the query operates. A 'host configuration' dependency edge, such as the one from any 'proto_library' rule to the Protocol Compiler, usually points to a tool executed during the build rather than a part of the same ' target' program. Cquery: If disabled, filters out all configured targets which cross a host or execution transition from the top-level target that discovered this configured target. That means if the top-level target is in the target configuration, only configured targets also in the target configuration will be returned. If the top-level target is in the host configuration, only host configured targets will be returned.
Tags: build_file_semantics
--transitions=<full, lite or none> default: "none"
The format in which cquery will print transition information.
Tags: affects_outputs
--universe_scope=<comma-separated list of options> default: ""
A comma-separated set of target patterns (additive and subtractive). The query may be performed in the universe defined by the transitive closure of the specified targets. This option is used for the query and cquery commands. For cquery, the input to this option is the targets all answers are built under and so this option may affect configurations and transitions. If this option is not specified, the top-level targets are assumed to be the targets parsed from the query expression. Note: For cquery, not specifying this option may cause the build to break if targets parsed from the query expression are not buildable with top-level options.
Tags: loading_and_analysis
Options that trigger optimizations of the build time:
--[no]collapse_duplicate_defines default: "false"
When enabled, redundant --defines will be removed early in the build. This avoids unnecessary loss of the analysis cache for certain types of equivalent builds.
Tags: loading_and_analysis, loses_incremental_state
--[no]distinct_host_configuration default: "true"
Build all the tools used during the build for a distinct configuration from that used for the target program. When this is disabled, the same configuration is used for host and target programs. This may cause undesirable rebuilds of tools such as the protocol compiler (and then everything downstream) whenever a minor change is made to the target configuration, such as setting the linker options. When this is enabled (the default), a distinct configuration will be used to build the tools, preventing undesired rebuilds. However, certain libraries will then need to be compiled twice, once for each configuration, which may cause some builds to be slower. As a rule of thumb, this option is likely to benefit users that make frequent changes in configuration (e.g. opt/dbg). Please read the user manual for the full explanation.
Tags: loses_incremental_state, bazel_internal_configuration, loading_and_analysis
--[no]experimental_filter_library_jar_with_program_jar default: "false"
Filter the ProGuard ProgramJar to remove any classes also present in the LibraryJar.
Tags: action_command_lines
--[no]experimental_inmemory_dotd_files default: "false"
If enabled, C++ .d files will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_inmemory_jdeps_files default: "false"
If enabled, the dependency (.jdeps) files generated from Java compilations will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_inmemory_unused_inputs_list default: "false"
If enabled, the optional 'unused_inputs_list' file will be passed through in memory directly from the remote build nodes instead of being written to disk.
Tags: loading_and_analysis, execution, affects_outputs, experimental
--[no]experimental_objc_include_scanning default: "false"
Whether to perform include scanning for objective C/C++.
Tags: loading_and_analysis, execution, changes_inputs
--[no]incremental_dexing default: "true"
Does most of the work for dexing separately for each Jar file.
Tags: affects_outputs, loading_and_analysis, loses_incremental_state
--[no]objc_use_dotd_pruning default: "true"
If set, .d files emitted by clang will be used to prune the set of inputs passed into objc compiles.
Tags: changes_inputs, loading_and_analysis
--[no]parse_headers_verifies_modules default: "false"
If enabled, the parse_headers feature verifies that a header module can be built for the target in question instead of doing a separate compile of the header.
Tags: loading_and_analysis, changes_inputs
--[no]process_headers_in_dependencies default: "false"
When building a target //a:a, process headers in all targets that //a:a depends on (if header processing is enabled for the toolchain).
Tags: execution
--[no]trim_test_configuration default: "false"
When enabled, test-related options will be cleared below the top level of the build. When this flag is active, tests cannot be built as dependencies of non- test rules, but changes to test-related options will not cause non-test rules to be re-analyzed.
Tags: loading_and_analysis, loses_incremental_state
--[no]use_singlejar_apkbuilder default: "true"
Build Android APKs with SingleJar.
Tags: loading_and_analysis
Options that affect the verbosity, format or location of logging:
--[no]toolchain_resolution_debug default: "false"
Print debug information while finding toolchains for a rule. This might help developers of Bazel or Starlark rules with debugging failures due to missing toolchains.
Tags: terminal_output
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--[no]incompatible_default_to_explicit_init_py default: "false"
This flag changes the default behavior so that __init__.py files are no longer automatically created in the runfiles of Python targets. Precisely, when a py_binary or py_test target has legacy_create_init set to "auto" (the default), it is treated as false if and only if this flag is set. See https: //github.com/bazelbuild/bazel/issues/10076.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_py2_outputs_are_suffixed default: "true"
If true, targets built in the Python 2 configuration will appear under an output root that includes the suffix '-py2', while targets built for Python 3 will appear in a root with no Python-related suffix. This means that the `bazel-bin` convenience symlink will point to Python 3 targets rather than Python 2. If you enable this option it is also recommended to enable `-- incompatible_py3_is_default`.
Tags: affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_py3_is_default default: "true"
If true, `py_binary` and `py_test` targets that do not set their `python_version` (or `default_python_version`) attribute will default to PY3 rather than to PY2. It is an error to set this flag without also enabling `-- incompatible_allow_python_version_transitions`. If you set this flag it is also recommended to set `--incompatible_py2_outputs_are_suffixed`.
Tags: loading_and_analysis, affects_outputs, incompatible_change, triggered_by_all_incompatible_changes
--[no]incompatible_use_python_toolchains default: "true"
If set to true, executable native Python rules will use the Python runtime specified by the Python toolchain, rather than the runtime given by legacy flags like --python_top.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--python_version=<PY2 or PY3> default: see description
The Python major version mode, either `PY2` or `PY3`. Note that under the new version semantics (`--incompatible_allow_python_version_transitions`) this is overridden by `py_binary` and `py_test` targets (even if they don't explicitly specify a version) so there is usually not much reason to supply this flag.
Tags: loading_and_analysis, affects_outputs
Miscellaneous options, not otherwise categorized.:
--[no]cache_test_results [-t] default: "auto"
If set to 'auto', Bazel reruns a test if and only if: (1) Bazel detects changes in the test or its dependencies, (2) the test is marked as external, (3) multiple test runs were requested with --runs_per_test, or(4) the test previously failed. If set to 'yes', Bazel caches all test results except for tests marked as external. If set to 'no', Bazel does not cache any test results.
--check_constraint=<a string> multiple uses are accumulated
Check the listed constraint.
--[no]experimental_cancel_concurrent_tests default: "false"
If true, then Bazel will cancel concurrently running tests on the first successful run. This is only useful in combination with -- runs_per_test_detects_flakes.
Tags: affects_outputs, loading_and_analysis
--[no]experimental_j2objc_header_map default: "true"
Whether to generate J2ObjC header map in parallel of J2ObjC transpilation.
--[no]experimental_j2objc_shorter_header_path default: "false"
Whether to generate with shorter header path (uses "_ios" instead of "_j2objc").
Tags: affects_outputs
--experimental_java_classpath=<off, javabuilder or bazel> default: "javabuilder"
Enables reduced classpaths for Java compilations.
--[no]explicit_java_test_deps default: "false"
Explicitly specify a dependency to JUnit or Hamcrest in a java_test instead of accidentally obtaining from the TestRunner's deps. Only works for bazel right now.
--host_java_launcher=<a build target label> default: see description
The Java launcher used by tools that are executed during a build.
--host_java_toolchain=<a build target label> default: "@bazel_tools//tools/jdk:remote_toolchain"
The Java toolchain used to build tools that are executed during a build.
--host_javabase=<a build target label> default: see description
JAVABASE used for the host JDK. This is the java_runtime which is used to execute tools during a build.
--host_javacopt=<a string> multiple uses are accumulated
Additional options to pass to javac when building tools that are executed during a build.
--[no]incompatible_strict_action_env default: "false"
If true, Bazel uses an environment with a static value for PATH and does not inherit LD_LIBRARY_PATH or TMPDIR. Use --action_env=ENV_VARIABLE if you want to inherit specific environment variables from the client, but note that doing so can prevent cross-user caching if a shared cache is used.
Tags: loading_and_analysis, incompatible_change, triggered_by_all_incompatible_changes
--j2objc_translation_flags=<comma-separated list of options> multiple uses are accumulated
Additional options to pass to the J2ObjC tool.
--java_debug
Causes the Java virtual machine of a java test to wait for a connection from a JDWP-compliant debugger (such as jdb) before starting the test. Implies - test_output=streamed.
Expands to:
  --test_arg=--wrapper_script_flag=--debug
  --test_output=streamed
  --test_strategy=exclusive
  --test_timeout=9999
  --nocache_test_results
--[no]java_deps default: "true"
Generate dependency information (for now, compile-time classpath) per Java target.
--[no]java_header_compilation default: "true"
Compile ijars directly from source.
--java_launcher=<a build target label> default: see description
The Java launcher to use when building Java binaries. The "launcher" attribute overrides this flag.
--java_toolchain=<a build target label> default: "@bazel_tools//tools/jdk:remote_toolchain"
The name of the toolchain rule for Java.
--javabase=<a build target label> default: "@bazel_tools//tools/jdk:jdk"
JAVABASE used for the JDK invoked by Bazel. This is the java_runtime which will be used to execute external Java commands.
--javacopt=<a string> multiple uses are accumulated
Additional options to pass to javac.
--jvmopt=<a string> multiple uses are accumulated
Additional options to pass to the Java VM. These options will get added to the VM startup options of each java_binary target.
--message_translations=<a string> multiple uses are accumulated
The message translations used for translating messages in Java targets.
--plugin=<a build target label> multiple uses are accumulated
Plugins to use in the build. Currently works with java_plugin.
--proguard_top=<a build target label> default: see description
Specifies which version of ProGuard to use for code removal when building a Java binary.
--proto_compiler=<a build target label> default: "@com_google_protobuf//:protoc"
The label of the proto-compiler.
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_cc=<a build target label> default: "@com_google_protobuf//:cc_toolchain"
Label of proto_lang_toolchain() which describes how to compile C++ protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_j2objc=<a build target label> default: "@bazel_tools//tools/j2objc:j2objc_proto_toolchain"
Label of proto_lang_toolchain() which describes how to compile j2objc protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_java=<a build target label> default: "@com_google_protobuf//:java_toolchain"
Label of proto_lang_toolchain() which describes how to compile Java protos
Tags: affects_outputs, loading_and_analysis
--proto_toolchain_for_javalite=<a build target label> default: "@com_google_protobuf_javalite//:javalite_toolchain"
Label of proto_lang_toolchain() which describes how to compile JavaLite protos
Tags: affects_outputs, loading_and_analysis
--protocopt=<a string> multiple uses are accumulated
Additional options to pass to the protobuf compiler.
Tags: affects_outputs
--[no]runs_per_test_detects_flakes default: "false"
If true, any shard in which at least one run/attempt passes and at least one run/attempt fails gets a FLAKY status.
--shell_executable=<a path> default: see description
Absolute path to the shell executable for Bazel to use. If this is unset, but the BAZEL_SH environment variable is set on the first Bazel invocation (that starts up a Bazel server), Bazel uses that. If neither is set, Bazel uses a hard-coded default path depending on the operating system it runs on (Windows: c:/tools/msys64/usr/bin/bash.exe, FreeBSD: /usr/local/bin/bash, all others: /bin/bash). Note that using a shell that is not compatible with bash may lead to build failures or runtime failures of the generated binaries.
Tags: loading_and_analysis
--test_arg=<a string> multiple uses are accumulated
Specifies additional options and arguments that should be passed to the test executable. Can be used multiple times to specify several arguments. If multiple tests are executed, each of them will receive identical arguments. Used only by the 'bazel test' command.
--test_filter=<a string> default: see description
Specifies a filter to forward to the test framework. Used to limit the tests run. Note that this does not affect which targets are built.
--test_result_expiration=<an integer> default: "-1"
This option is deprecated and has no effect.
--test_sharding_strategy=<explicit or disabled> default: "explicit"
Specify strategy for test sharding: 'explicit' to only use sharding if the 'shard_count' BUILD attribute is present. 'disabled' to never use test sharding.
--[no]translations default: "auto"
Translate Java messages; bundle all translations into the jar for each affected rule.
--[no]use_ijars default: "true"
If enabled, this option causes Java compilation to use interface jars. This will result in faster incremental compilation, but error messages can be different.

Dump Options

Options that control the output of the command:
--[no]action_cache default: "false"
Dump action cache content.
Tags: bazel_monitoring
--action_graph=<a string> default: see description
Dump action graph to the specified path.
Tags: bazel_monitoring
--[no]action_graph:include_artifacts default: "true"
Include inputs and outputs actions in the action graph dump. This option does only apply to --action_graph.
Tags: bazel_monitoring
--[no]action_graph:include_cmdline default: "false"
Include command line of actions in the action graph dump. This option does only apply to --action_graph.
Tags: bazel_monitoring
--action_graph:targets=<comma-separated list of options> default: "..."
Comma separated list of targets to include in action graph dump. Defaults to all attributes. This option does only apply to --action_graph.
Tags: bazel_monitoring
--[no]packages default: "false"
Dump package cache content.
Tags: bazel_monitoring
--[no]rule_classes default: "false"
Dump rule classes.
Tags: bazel_monitoring
--[no]rules default: "false"
Dump rules, including counts and memory usage (if memory is tracked).
Tags: bazel_monitoring
--skyframe=<off, summary or detailed> default: "off"
Dump Skyframe graph: 'off', 'summary', or 'detailed'.
Tags: bazel_monitoring
--skylark_memory=<a string> default: see description
Dumps a pprof-compatible memory profile to the specified path. To learn more please see <a href=https://github.com/google/pprof>pprof</a>.
Tags: bazel_monitoring

Fetch Options

Options that appear before the command and are parsed by the client:
--distdir=<a path> multiple uses are accumulated
Additional places to search for archives before accessing the network to download them.
Tags: bazel_internal_configuration
If set, the repository cache will hardlink the file in case of a cache hit, rather than copying. This is inteded to save disk space.
Tags: bazel_internal_configuration
--experimental_scale_timeouts=<a double> default: "1.0"
Scale all timeouts in Starlark repository rules by this factor. In this way, external repositories can be made working on machines that are slower than the rule author expected, without changing the source code
Tags: bazel_internal_configuration, experimental
--http_timeout_scaling=<a double> default: "1.0"
Scale all timeouts related to http downloads by the given factor
Tags: bazel_internal_configuration
--repository_cache=<a path> default: see description
Specifies the cache location of the downloaded values obtained during the fetching of external repositories. An empty string as argument requests the cache to be disabled.
Tags: bazel_internal_configuration
Options that control build execution:
If set to true, Bazel will represent symlinks in action outputs in the remote caching/execution protocol as such. The current behavior is for remote caches/executors to follow symlinks and represent them as files. See #6631 for details.
Tags: execution, incompatible_change, triggered_by_all_incompatible_changes
--[no]keep_going [-k] default: "false"
Continue as much as possible after an error. While the target that failed and those that depend on it cannot be analyzed, other prerequisites of these targets can be.
Tags: eagerness_to_exit
--loading_phase_threads=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
Number of parallel threads to use for the loading/analysis phase.Takes an integer, or a keyword ("auto", "HOST_CPUS", " HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". "auto" sets a reasonable default based onhost resources. Must be at least 1.
Tags: bazel_internal_configuration
If true, upload action symlink outputs to the remote cache. If this option is not enabled, cachable actions that output symlinks will fail.
Tags: execution
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--remote_download_minimal
Does not download any remote build outputs to the local machine. This flag is a shortcut for three flags: --experimental_inmemory_jdeps_files, -- experimental_inmemory_dotd_files and -- experimental_remote_download_outputs=minimal.
Expands to:
  --nobuild_runfile_links
  --experimental_inmemory_jdeps_files
  --experimental_inmemory_dotd_files
  --experimental_remote_download_outputs=minimal

Tags: affects_outputs
--remote_download_outputs=<all, minimal or toplevel> default: "all"
If set to 'minimal' doesn't download any remote build outputs to the local machine, except the ones required by local actions. If set to ' toplevel' behaves like'minimal' except that it also downloads outputs of top level targets to the local machine. Both options can significantly reduce build times if network bandwidth is a bottleneck.
Tags: affects_outputs
--remote_download_toplevel
Only downloads remote outputs of top level targets to the local machine. This flag is a shortcut for three flags: --experimental_inmemory_jdeps_files, -- experimental_inmemory_dotd_files and -- experimental_remote_download_outputs=toplevel.
Expands to:
  --experimental_inmemory_jdeps_files
  --experimental_inmemory_dotd_files
  --experimental_remote_download_outputs=toplevel

Tags: affects_outputs
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--experimental_repository_hash_file=<a string> default: ""
If non-empty, specifies a file containing a resolved value, against which the repository directory hashes should be verified
Tags: affects_outputs, experimental
--experimental_verify_repository_rules=<a string> multiple uses are accumulated
If list of repository rules for which the hash of the output directory should be verified, provided a file is specified by -- experimental_repository_hash_file.
Tags: affects_outputs, experimental
Options that affect the verbosity, format or location of logging:
--experimental_repository_resolved_file=<a string> default: ""
If non-empty, write a Skylark value with the resolved information of all Starlark repository rules that were executed.
Tags: affects_outputs
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--experimental_resolved_file_instead_of_workspace=<a string> default: ""
If non-empty read the specified resolved file instead of the WORKSPACE file
Tags: changes_inputs
Remote caching and execution options:
--[no]experimental_guard_against_concurrent_changes default: "false"
Turn this off to disable checking the ctime of input files of an action before uploading it to a remote cache. There may be cases where the Linux kernel delays writing of files, which could cause false positives.
--experimental_remote_grpc_log=<a path> default: see description
If specified, a path to a file to log gRPC call related details. This log consists of a sequence of serialized com.google.devtools.build.lib.remote. logging.RemoteExecutionLog.LogEntry protobufs with each message prefixed by a varint denoting the size of the following serialized protobuf message, as performed by the method LogEntry.writeDelimitedTo(OutputStream).
--[no]remote_accept_cached default: "true"
Whether to accept remotely cached action results.
--remote_cache=<a string> default: see description
A URI of a caching endpoint. The supported schemas are http, https, grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel will default to grpcs. Specify grpc:// or http:// schema to disable TLS.See https://docs.bazel. build/versions/master/remote-caching.html
--remote_default_exec_properties=<a 'name=value' assignment> multiple uses are accumulated
Set the default exec properties to be used as the remote execution platform if an execution platform does not already set exec_properties.
Tags: affects_outputs
--remote_default_platform_properties=<a string> default: ""
Set the default platform properties to be set for the remote execution API, if the execution platform does not already set remote_execution_properties. This value will also be used if the host platform is selected as the execution platform for remote execution.
--remote_execution_priority=<an integer> default: "0"
The relative priority of actions to be executed remotely. The semantics of the particular priority values are server-dependent.
--remote_executor=<a string> default: see description
HOST or HOST:PORT of a remote execution endpoint.The supported schemas are grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel'll default to grpcs. Specify grpc:// schema to disable TLS.
--remote_header=<a 'name=value' assignment> multiple uses are accumulated
Specify a HTTP header that will be included in requests: -- remote_header=Name=Value. Multiple headers can be passed by specifying the flag multiple times. Multiple values for the same name will be converted to a comma- separated list. This flagis currently only implemented for the HTTP protocol.
--remote_instance_name=<a string> default: ""
Value to pass as instance_name in the remote execution API.
--[no]remote_local_fallback default: "false"
Whether to fall back to standalone local execution strategy if remote execution fails.
--remote_local_fallback_strategy=<a string> default: "local"
No-op, deprecated. See https://github.com/bazelbuild/bazel/issues/7480 for details.
--remote_max_connections=<an integer> default: "100"
The max. number of concurrent network connections to the remote cache/executor. By default Bazel limits the number of TCP connections to 100. Setting this flag to 0 will make Bazel choose the number of connections automatically.
Tags: host_machine_resource_optimizations
--remote_proxy=<a string> default: see description
Connect to the remote cache through a proxy. Currently this flag can only be used to configure a Unix domain socket (unix:/path/to/socket).
--remote_result_cache_priority=<an integer> default: "0"
The relative priority of remote actions to be stored in remote cache. The semantics of the particular priority values are server-dependent.
--remote_retries=<an integer> default: "5"
The maximum number of attempts to retry a transient error. If set to 0, retries are disabled.
--remote_timeout=<an integer> default: "60"
The maximum number of seconds to wait for remote execution and cache calls. For the REST cache, this is both the connect and the read timeout.
--[no]remote_upload_local_results default: "true"
Whether to upload locally executed action results to the remote cache.
--[no]remote_verify_downloads default: "true"
If set to true, Bazel will compute the hash sum of all remote downloads and discard the remotely cached values if they don't match the expected value.
Miscellaneous options, not otherwise categorized.:
--deleted_packages=<comma-separated list of package names> default: ""
A comma-separated list of names of packages which the build system will consider non-existent, even if they are visible somewhere on the package path. Use this option when deleting a subpackage 'x/y' of an existing package 'x'. For example, after deleting x/y/BUILD in your client, the build system may complain if it encounters a label '//x:y/z' if that is still provided by another package_path entry. Specifying --deleted_packages x/y avoids this problem.
--disk_cache=<a path> default: see description
A path to a directory where Bazel can read and write actions and action outputs. If the directory does not exist, it will be created.
--google_auth_scopes=<comma-separated list of options> default: "https://www.googleapis.com/auth/cloud-platform"
A comma-separated list of Google Cloud authentication scopes.
--google_credentials=<a string> default: see description
Specifies the file to get authentication credentials from. See https://cloud. google.com/docs/authentication for details.
--[no]google_default_credentials default: "false"
Whether to use 'Google Application Default Credentials' for authentication. See https://cloud.google.com/docs/authentication for details. Disabled by default.
--[no]incompatible_tls_enabled_removed default: "true"
No-op. See #8061 for details.
Tags: incompatible_change, triggered_by_all_incompatible_changes
--override_repository=<an equals-separated mapping of repository name to path> multiple uses are accumulated
Overrides a repository with a local directory.
--package_path=<colon-separated list of options> default: "%workspace%"
A colon-separated list of where to look for packages. Elements beginning with '%workspace%' are relative to the enclosing workspace. If omitted or empty, the default is the output of 'bazel info default-package-path'.
--[no]show_loading_progress default: "true"
If enabled, causes Bazel to print "Loading package:" messages.
--tls_certificate=<a string> default: see description
Specify the TLS client certificate to use.
--[no]tls_enabled default: "false"
No-op. See #8061 for details.

Help Options

Options that affect the verbosity, format or location of logging:
--help_verbosity=<long, medium or short> default: "medium"
Select the verbosity of the help command.
Tags: affects_outputs, terminal_output
--long [-l]
Show full description of each option, instead of just its name.
Expands to:
  --help_verbosity=long

Tags: affects_outputs, terminal_output
--short
Show only the names of the options, not their types or meanings.
Expands to:
  --help_verbosity=short

Tags: affects_outputs, terminal_output

Info Options

Inherits all options from build.

Options that affect the verbosity, format or location of logging:
--[no]show_make_env default: "false"
Include the "Make" environment in the output.
Tags: affects_outputs, terminal_output

License Options

Mobile-install Options

Inherits all options from build.

Options that control build execution:
--mode=<classic, classic_internal_test_do_not_use or skylark> default: "classic"
Select how to run mobile-install. "classic" runs the current version of mobile-install. "skylark" uses the new skylark version, which has support for android_test.
Tags: loading_and_analysis, execution, incompatible_change
Options that configure the toolchain used for action execution:
--adb=<a string> default: ""
adb binary to use for the 'mobile-install' command. If unspecified, the one in the Android SDK specified by the --android_sdk command line option (or the default SDK if --android_sdk is not specified) is used.
Tags: changes_inputs
Options that control the output of the command:
--[no]incremental default: "false"
Whether to do an incremental install. If true, try to avoid unnecessary additional work by reading the state of the device the code is to be installed on and using that information to avoid unnecessary work. If false (the default), always do a full install.
Tags: loading_and_analysis
--[no]split_apks default: "false"
Whether to use split apks to install and update the application on the device. Works only with devices with Marshmallow or later
Tags: loading_and_analysis, affects_outputs
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--adb_arg=<a string> multiple uses are accumulated
Extra arguments to pass to adb. Usually used to designate a device to install to.
Tags: action_command_lines
--debug_app
Whether to wait for the debugger before starting the app.
Expands to:
  --start=DEBUG

Tags: execution
--device=<a string> default: ""
The adb device serial number. If not specified, the first device will be used.
Tags: action_command_lines
--start=<no, cold, warm or debug> default: "NO"
How the app should be started after installing it. Set to WARM to preserve and restore application state on incremental installs.
Tags: execution
--start_app
Whether to start the app after installing it.
Expands to:
  --start=COLD

Tags: execution
Options that affect the verbosity, format or location of logging:
--incremental_install_verbosity=<a string> default: ""
The verbosity for incremental install. Set to 1 for debug logging.
Tags: bazel_monitoring

Print_action Options

Inherits all options from build.

Miscellaneous options, not otherwise categorized.:
--print_action_mnemonics=<a string> multiple uses are accumulated
Lists which mnemonics to filter print_action data by, no filtering takes place when left empty.

Query Options

Options that appear before the command and are parsed by the client:
--distdir=<a path> multiple uses are accumulated
Additional places to search for archives before accessing the network to download them.
Tags: bazel_internal_configuration
If set, the repository cache will hardlink the file in case of a cache hit, rather than copying. This is inteded to save disk space.
Tags: bazel_internal_configuration
--experimental_scale_timeouts=<a double> default: "1.0"
Scale all timeouts in Starlark repository rules by this factor. In this way, external repositories can be made working on machines that are slower than the rule author expected, without changing the source code
Tags: bazel_internal_configuration, experimental
--http_timeout_scaling=<a double> default: "1.0"
Scale all timeouts related to http downloads by the given factor
Tags: bazel_internal_configuration
--repository_cache=<a path> default: see description
Specifies the cache location of the downloaded values obtained during the fetching of external repositories. An empty string as argument requests the cache to be disabled.
Tags: bazel_internal_configuration
Options that control build execution:
--[no]keep_going [-k] default: "false"
Continue as much as possible after an error. While the target that failed and those that depend on it cannot be analyzed, other prerequisites of these targets can be.
Tags: eagerness_to_exit
--loading_phase_threads=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
Number of parallel threads to use for the loading/analysis phase.Takes an integer, or a keyword ("auto", "HOST_CPUS", " HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". "auto" sets a reasonable default based onhost resources. Must be at least 1.
Tags: bazel_internal_configuration
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--experimental_repository_hash_file=<a string> default: ""
If non-empty, specifies a file containing a resolved value, against which the repository directory hashes should be verified
Tags: affects_outputs, experimental
--experimental_verify_repository_rules=<a string> multiple uses are accumulated
If list of repository rules for which the hash of the output directory should be verified, provided a file is specified by -- experimental_repository_hash_file.
Tags: affects_outputs, experimental
Options relating to query output and semantics:
--aspect_deps=<off, conservative or precise> default: "conservative"
How to resolve aspect dependencies when the output format is one of {xml,proto, record}. 'off' means no aspect dependencies are resolved, ' conservative' (the default) means all declared aspect dependencies are added regardless of whether they are given the rule class of direct dependencies, 'precise' means that only those aspects are added that are possibly active given the rule class of the direct dependencies. Note that precise mode requires loading other packages to evaluate a single target thus making it slower than the other modes. Also note that even precise mode is not completely precise: the decision whether to compute an aspect is decided in the analysis phase, which is not run during 'bazel query'.
Tags: build_file_semantics
--[no]experimental_graphless_query default: "auto"
If true, uses a Query implementation that does not make a copy of the graph. The new implementation only supports --order_output=no, as well as only a subset of output formatters.
Tags: build_file_semantics, eagerness_to_exit
--graph:conditional_edges_limit=<an integer> default: "4"
The maximum number of condition labels to show. -1 means no truncation and 0 means no annotation. This option is only applicable to --output=graph.
Tags: terminal_output
--[no]graph:factored default: "true"
If true, then the graph will be emitted 'factored', i.e. topologically- equivalent nodes will be merged together and their labels concatenated. This option is only applicable to --output=graph.
Tags: terminal_output
--graph:node_limit=<an integer> default: "512"
The maximum length of the label string for a graph node in the output. Longer labels will be truncated; -1 means no truncation. This option is only applicable to --output=graph.
Tags: terminal_output
--[no]implicit_deps default: "true"
If enabled, implicit dependencies will be included in the dependency graph over which the query operates. An implicit dependency is one that is not explicitly specified in the BUILD file but added by bazel.
Tags: build_file_semantics
--[no]incompatible_prefer_unordered_output default: "false"
If this option is set together with --order_output=auto (default) and if the output formatter supports streaming output, then the results will be unordered.
Tags: terminal_output, incompatible_change, triggered_by_all_incompatible_changes
--[no]line_terminator_null default: "false"
Whether each format is terminated with \0 instead of newline.
Tags: terminal_output
--[no]nodep_deps default: "true"
If enabled, deps from "nodep" attributes will be included in the dependency graph over which the query operates. A common example of a " nodep" attribute is "visibility". Run and parse the output of `info build-language` to learn about all the "nodep" attributes in the build language.
Tags: build_file_semantics
--noorder_results
Output the results in dependency-ordered (default) or unordered fashion. The unordered output is faster but only supported when --output is not minrank, maxrank, or graph.
Expands to:
  --order_output=no

Tags: terminal_output
--null
Whether each format is terminated with \0 instead of newline.
Expands to:
  --line_terminator_null=true

Tags: terminal_output
--order_output=<no, deps, auto or full> default: "auto"
Output the results unordered (no), dependency-ordered (deps), or fully ordered (full). The default is 'auto', meaning that results are output either dependency-ordered or fully ordered, depending on the output formatter (dependency-ordered for proto, minrank, maxrank, and graph, fully ordered for all others). When output is fully ordered, nodes that would otherwise be unordered by the output formatter are alphabetized before output.
Tags: terminal_output
--order_results
Output the results in dependency-ordered (default) or unordered fashion. The unordered output is faster but only supported when --output is not minrank, maxrank, or graph.
Expands to:
  --order_output=auto

Tags: terminal_output
--output=<a string> default: "label"
The format in which the query results should be printed. Allowed values for query are: build, graph, label, label_kind, locations, maxrank, minrank, package, proto, xml.
Tags: terminal_output
--[no]proto:default_values default: "true"
If true, attributes whose value is not explicitly specified in the BUILD file are included; otherwise they are omitted. This option is applicable to -- output=proto
Tags: terminal_output
--[no]proto:flatten_selects default: "true"
If enabled, configurable attributes created by select() are flattened. For list types the flattened representation is a list containing each value of the select map exactly once. Scalar types are flattened to null.
Tags: build_file_semantics
--[no]proto:locations default: "true"
Whether to output location information in proto output at all.
Tags: terminal_output
--proto:output_rule_attrs=<comma-separated list of options> default: "all"
Comma separated list of attributes to include in output. Defaults to all attributes. Set to empty string to not output any attribute. This option is applicable to --output=proto.
Tags: terminal_output
--[no]proto:rule_inputs_and_outputs default: "true"
Whether or not to populate the rule_input and rule_output fields.
Tags: terminal_output
--query_file=<a string> default: ""
If set, query will read the query from the file named here, rather than on the command line. It is an error to specify a file here as well as a command-line query.
Tags: changes_inputs
--[no]relative_locations default: "false"
If true, the location of BUILD files in xml and proto outputs will be relative. By default, the location output is an absolute path and will not be consistent across machines. You can set this option to true to have a consistent result across machines.
Tags: terminal_output
--[no]strict_test_suite default: "false"
If true, the tests() expression gives an error if it encounters a test_suite containing non-test targets.
Tags: build_file_semantics, eagerness_to_exit
--[no]tool_deps default: "true"
Query: If disabled, dependencies on 'host configuration' or ' execution' targets will not be included in the dependency graph over which the query operates. A 'host configuration' dependency edge, such as the one from any 'proto_library' rule to the Protocol Compiler, usually points to a tool executed during the build rather than a part of the same ' target' program. Cquery: If disabled, filters out all configured targets which cross a host or execution transition from the top-level target that discovered this configured target. That means if the top-level target is in the target configuration, only configured targets also in the target configuration will be returned. If the top-level target is in the host configuration, only host configured targets will be returned.
Tags: build_file_semantics
--universe_scope=<comma-separated list of options> default: ""
A comma-separated set of target patterns (additive and subtractive). The query may be performed in the universe defined by the transitive closure of the specified targets. This option is used for the query and cquery commands. For cquery, the input to this option is the targets all answers are built under and so this option may affect configurations and transitions. If this option is not specified, the top-level targets are assumed to be the targets parsed from the query expression. Note: For cquery, not specifying this option may cause the build to break if targets parsed from the query expression are not buildable with top-level options.
Tags: loading_and_analysis
--[no]xml:default_values default: "false"
If true, rule attributes whose value is not explicitly specified in the BUILD file are printed; otherwise they are omitted.
Tags: terminal_output
--[no]xml:line_numbers default: "true"
If true, XML output contains line numbers. Disabling this option may make diffs easier to read. This option is only applicable to --output=xml.
Tags: terminal_output
Options that affect the verbosity, format or location of logging:
--experimental_repository_resolved_file=<a string> default: ""
If non-empty, write a Skylark value with the resolved information of all Starlark repository rules that were executed.
Tags: affects_outputs
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--experimental_resolved_file_instead_of_workspace=<a string> default: ""
If non-empty read the specified resolved file instead of the WORKSPACE file
Tags: changes_inputs
Miscellaneous options, not otherwise categorized.:
--deleted_packages=<comma-separated list of package names> default: ""
A comma-separated list of names of packages which the build system will consider non-existent, even if they are visible somewhere on the package path. Use this option when deleting a subpackage 'x/y' of an existing package 'x'. For example, after deleting x/y/BUILD in your client, the build system may complain if it encounters a label '//x:y/z' if that is still provided by another package_path entry. Specifying --deleted_packages x/y avoids this problem.
--override_repository=<an equals-separated mapping of repository name to path> multiple uses are accumulated
Overrides a repository with a local directory.
--package_path=<colon-separated list of options> default: "%workspace%"
A colon-separated list of where to look for packages. Elements beginning with '%workspace%' are relative to the enclosing workspace. If omitted or empty, the default is the output of 'bazel info default-package-path'.
--[no]show_loading_progress default: "true"
If enabled, causes Bazel to print "Loading package:" messages.

Run Options

Inherits all options from build.

Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--script_path=<a path> default: see description
If set, write a shell script to the given file which invokes the target. If this option is set, the target is not run from bazel. Use 'bazel run --script_path=foo //foo && ./foo' to invoke target ' //foo' This differs from 'bazel run //foo' in that the % {product} lock is released and the executable is connected to the terminal' s stdin.
Tags: affects_outputs, execution
Options that govern the behavior of the test environment or test runner:
--[no]incompatible_windows_bashless_run_command default: "true"
On Windows: if true, the "run" command runs the binary directly instead of running through Bash; when false, then the binary is ran through Bash. On other platforms: no-op.
Tags: host_machine_resource_optimizations, incompatible_change, triggered_by_all_incompatible_changes

Shutdown Options

Options that control the output of the command:
--iff_heap_size_greater_than=<an integer> default: "0"
Iff non-zero, then shutdown will only shut down the server if the total memory (in MB) consumed by the JVM exceeds this value.
Tags: loses_incremental_state, eagerness_to_exit

Sync Options

Options that appear before the command and are parsed by the client:
--distdir=<a path> multiple uses are accumulated
Additional places to search for archives before accessing the network to download them.
Tags: bazel_internal_configuration
If set, the repository cache will hardlink the file in case of a cache hit, rather than copying. This is inteded to save disk space.
Tags: bazel_internal_configuration
--experimental_scale_timeouts=<a double> default: "1.0"
Scale all timeouts in Starlark repository rules by this factor. In this way, external repositories can be made working on machines that are slower than the rule author expected, without changing the source code
Tags: bazel_internal_configuration, experimental
--http_timeout_scaling=<a double> default: "1.0"
Scale all timeouts related to http downloads by the given factor
Tags: bazel_internal_configuration
--repository_cache=<a path> default: see description
Specifies the cache location of the downloaded values obtained during the fetching of external repositories. An empty string as argument requests the cache to be disabled.
Tags: bazel_internal_configuration
Options that control build execution:
--[no]configure default: "False"
Only sync repositories marked as 'configure' for system-configuration purpose.
Tags: changes_inputs
--[no]keep_going [-k] default: "false"
Continue as much as possible after an error. While the target that failed and those that depend on it cannot be analyzed, other prerequisites of these targets can be.
Tags: eagerness_to_exit
--loading_phase_threads=<an integer, or a keyword ("auto", "HOST_CPUS", "HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5"> default: "auto"
Number of parallel threads to use for the loading/analysis phase.Takes an integer, or a keyword ("auto", "HOST_CPUS", " HOST_RAM"), optionally followed by an operation ([-|*]<float>) eg. "auto", "HOST_CPUS*.5". "auto" sets a reasonable default based onhost resources. Must be at least 1.
Tags: bazel_internal_configuration
Options that affect how strictly Bazel enforces valid build inputs (rule definitions, flag combinations, etc.):
--experimental_repository_hash_file=<a string> default: ""
If non-empty, specifies a file containing a resolved value, against which the repository directory hashes should be verified
Tags: affects_outputs, experimental
--experimental_verify_repository_rules=<a string> multiple uses are accumulated
If list of repository rules for which the hash of the output directory should be verified, provided a file is specified by -- experimental_repository_hash_file.
Tags: affects_outputs, experimental
Options that affect the verbosity, format or location of logging:
--experimental_repository_resolved_file=<a string> default: ""
If non-empty, write a Skylark value with the resolved information of all Starlark repository rules that were executed.
Tags: affects_outputs
Options specifying or altering a generic input to a Bazel command that does not fall into other categories.:
--experimental_resolved_file_instead_of_workspace=<a string> default: ""
If non-empty read the specified resolved file instead of the WORKSPACE file
Tags: changes_inputs
Miscellaneous options, not otherwise categorized.:
--deleted_packages=<comma-separated list of package names> default: ""
A comma-separated list of names of packages which the build system will consider non-existent, even if they are visible somewhere on the package path. Use this option when deleting a subpackage 'x/y' of an existing package 'x'. For example, after deleting x/y/BUILD in your client, the build system may complain if it encounters a label '//x:y/z' if that is still provided by another package_path entry. Specifying --deleted_packages x/y avoids this problem.
--override_repository=<an equals-separated mapping of repository name to path> multiple uses are accumulated
Overrides a repository with a local directory.
--package_path=<colon-separated list of options> default: "%workspace%"
A colon-separated list of where to look for packages. Elements beginning with '%workspace%' are relative to the enclosing workspace. If omitted or empty, the default is the output of 'bazel info default-package-path'.
--[no]show_loading_progress default: "true"
If enabled, causes Bazel to print "Loading package:" messages.

Test Options

Inherits all options from build.

Options that control build execution:
If set to true, Bazel will represent symlinks in action outputs in the remote caching/execution protocol as such. The current behavior is for remote caches/executors to follow symlinks and represent them as files. See #6631 for details.
Tags: execution, incompatible_change, triggered_by_all_incompatible_changes
If true, upload action symlink outputs to the remote cache. If this option is not enabled, cachable actions that output symlinks will fail.
Tags: execution
Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--remote_download_minimal
Does not download any remote build outputs to the local machine. This flag is a shortcut for three flags: --experimental_inmemory_jdeps_files, -- experimental_inmemory_dotd_files and -- experimental_remote_download_outputs=minimal.
Expands to:
  --nobuild_runfile_links
  --experimental_inmemory_jdeps_files
  --experimental_inmemory_dotd_files
  --experimental_remote_download_outputs=minimal

Tags: affects_outputs
--remote_download_outputs=<all, minimal or toplevel> default: "all"
If set to 'minimal' doesn't download any remote build outputs to the local machine, except the ones required by local actions. If set to ' toplevel' behaves like'minimal' except that it also downloads outputs of top level targets to the local machine. Both options can significantly reduce build times if network bandwidth is a bottleneck.
Tags: affects_outputs
--remote_download_toplevel
Only downloads remote outputs of top level targets to the local machine. This flag is a shortcut for three flags: --experimental_inmemory_jdeps_files, -- experimental_inmemory_dotd_files and -- experimental_remote_download_outputs=toplevel.
Expands to:
  --experimental_inmemory_jdeps_files
  --experimental_inmemory_dotd_files
  --experimental_remote_download_outputs=toplevel

Tags: affects_outputs
Options that affect the verbosity, format or location of logging:
--[no]print_relative_test_log_paths default: "false"
If true, when printing the path to a test log, use relative path that makes use of the 'testlogs' convenience symlink. N.B. - A subsequent ' build'/'test'/etc invocation with a different configuration can cause the target of this symlink to change, making the path printed previously no longer useful.
Tags: affects_outputs
--[no]test_verbose_timeout_warnings default: "false"
If true, print additional warnings when the actual test execution time does not match the timeout defined by the test (whether implied or explicit).
Tags: affects_outputs
--[no]verbose_test_summary default: "true"
If true, print additional information (timing, number of failed runs, etc) in the test summary.
Tags: affects_outputs
Remote caching and execution options:
--[no]experimental_guard_against_concurrent_changes default: "false"
Turn this off to disable checking the ctime of input files of an action before uploading it to a remote cache. There may be cases where the Linux kernel delays writing of files, which could cause false positives.
--experimental_remote_grpc_log=<a path> default: see description
If specified, a path to a file to log gRPC call related details. This log consists of a sequence of serialized com.google.devtools.build.lib.remote. logging.RemoteExecutionLog.LogEntry protobufs with each message prefixed by a varint denoting the size of the following serialized protobuf message, as performed by the method LogEntry.writeDelimitedTo(OutputStream).
--[no]remote_accept_cached default: "true"
Whether to accept remotely cached action results.
--remote_cache=<a string> default: see description
A URI of a caching endpoint. The supported schemas are http, https, grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel will default to grpcs. Specify grpc:// or http:// schema to disable TLS.See https://docs.bazel. build/versions/master/remote-caching.html
--remote_default_exec_properties=<a 'name=value' assignment> multiple uses are accumulated
Set the default exec properties to be used as the remote execution platform if an execution platform does not already set exec_properties.
Tags: affects_outputs
--remote_default_platform_properties=<a string> default: ""
Set the default platform properties to be set for the remote execution API, if the execution platform does not already set remote_execution_properties. This value will also be used if the host platform is selected as the execution platform for remote execution.
--remote_execution_priority=<an integer> default: "0"
The relative priority of actions to be executed remotely. The semantics of the particular priority values are server-dependent.
--remote_executor=<a string> default: see description
HOST or HOST:PORT of a remote execution endpoint.The supported schemas are grpc and grpcs (grpc with TLS enabled). If no schema is provided bazel'll default to grpcs. Specify grpc:// schema to disable TLS.
--remote_header=<a 'name=value' assignment> multiple uses are accumulated
Specify a HTTP header that will be included in requests: -- remote_header=Name=Value. Multiple headers can be passed by specifying the flag multiple times. Multiple values for the same name will be converted to a comma- separated list. This flagis currently only implemented for the HTTP protocol.
--remote_instance_name=<a string> default: ""
Value to pass as instance_name in the remote execution API.
--[no]remote_local_fallback default: "false"
Whether to fall back to standalone local execution strategy if remote execution fails.
--remote_local_fallback_strategy=<a string> default: "local"
No-op, deprecated. See https://github.com/bazelbuild/bazel/issues/7480 for details.
--remote_max_connections=<an integer> default: "100"
The max. number of concurrent network connections to the remote cache/executor. By default Bazel limits the number of TCP connections to 100. Setting this flag to 0 will make Bazel choose the number of connections automatically.
Tags: host_machine_resource_optimizations
--remote_proxy=<a string> default: see description
Connect to the remote cache through a proxy. Currently this flag can only be used to configure a Unix domain socket (unix:/path/to/socket).
--remote_result_cache_priority=<an integer> default: "0"
The relative priority of remote actions to be stored in remote cache. The semantics of the particular priority values are server-dependent.
--remote_retries=<an integer> default: "5"
The maximum number of attempts to retry a transient error. If set to 0, retries are disabled.
--remote_timeout=<an integer> default: "60"
The maximum number of seconds to wait for remote execution and cache calls. For the REST cache, this is both the connect and the read timeout.
--[no]remote_upload_local_results default: "true"
Whether to upload locally executed action results to the remote cache.
--[no]remote_verify_downloads default: "true"
If set to true, Bazel will compute the hash sum of all remote downloads and discard the remotely cached values if they don't match the expected value.
Miscellaneous options, not otherwise categorized.:
--disk_cache=<a path> default: see description
A path to a directory where Bazel can read and write actions and action outputs. If the directory does not exist, it will be created.
--google_auth_scopes=<comma-separated list of options> default: "https://www.googleapis.com/auth/cloud-platform"
A comma-separated list of Google Cloud authentication scopes.
--google_credentials=<a string> default: see description
Specifies the file to get authentication credentials from. See https://cloud. google.com/docs/authentication for details.
--[no]google_default_credentials default: "false"
Whether to use 'Google Application Default Credentials' for authentication. See https://cloud.google.com/docs/authentication for details. Disabled by default.
--[no]incompatible_tls_enabled_removed default: "true"
No-op. See #8061 for details.
Tags: incompatible_change, triggered_by_all_incompatible_changes
--tls_certificate=<a string> default: see description
Specify the TLS client certificate to use.
--[no]tls_enabled default: "false"
No-op. See #8061 for details.

Version Options

Options that let the user configure the intended output, affecting its value, as opposed to its existence:
--[no]gnu_format default: "false"
If set, write the version to stdout using the conventions described in the GNU standards.
Tags: affects_outputs, execution

Option Effect Tags

unknown This option has unknown, or undocumented, effect.
no_op This option has literally no effect.
loses_incremental_state Changing the value of this option can cause significant loss of incremental state, which slows builds. State could be lost due to a server restart or to invalidation of a large part of the dependency graph.
changes_inputs This option actively changes the inputs that bazel considers for the build, such as filesystem restrictions, repository versions, or other options.
affects_outputs This option affects bazel's outputs. This tag is intentionally broad, can include transitive affects, and does not specify the type of output it affects.
build_file_semantics This option affects the semantics of BUILD or .bzl files.
bazel_internal_configuration This option affects settings of bazel-internal machinery. This tag does not, on its own, mean that build artifacts are affected.
loading_and_analysis This option affects the loading and analysis of dependencies, and the building of the dependency graph.
execution This option affects the execution phase, such as sandboxing or remote execution related options.
host_machine_resource_optimizations This option triggers an optimization that may be machine specific and is not guaranteed to work on all machines. The optimization could include a tradeoff with other aspects of performance, such as memory or cpu cost.
eagerness_to_exit This option changes how eagerly bazel will exit from a failure, where a choice between continuing despite the failure and ending the invocation exists.
bazel_monitoring This option is used to monitor bazel's behavior and performance.
terminal_output This option affects bazel's terminal output.
action_command_lines This option changes the command line arguments of one or more build actions.
test_runner This option changes the testrunner environment of the build.

Option Metadata Tags

experimental This option triggers an experimental feature with no guarantees of functionality.
incompatible_change This option triggers a breaking change. Use this option to test your migration readiness or get early access to the new feature
deprecated This option is deprecated. It might be that the feature it affects is deprecated, or that another method of supplying the information is preferred.
triggered_by_all_incompatible_changes This option is triggered by the expansion option --all_incompatible_changes.