Release 4.0.0 (2021-01-21)

Baseline: 37a429a

Cherry picks:

   + a689d67:
     Use getRunfilesPath for run_under executable path generation.
     getRootRelativePath doesn't return a valid runfiles path for
     external source files anymore after the recent external source
     root change. Also, it won't work for external labels either once
     the --nolegacy_external_runfiles becomes default. This fixes
     issue bazelbuild#12545.
   + d90ec67:
     Fix NPE when coveragerunner is not set on the toolchain.
   + 8555789:
     Fix the classic query package-loading cutoff optimization with
     external workspaces.
   + d113d74:
     Update turbine
   + 1489f0f:
     Support Scala3 .tasty files
   + 0d2d95c:
     Update to java_tools javac11 release 10.5 (bazelbuild#12647)
   + a9419f3:
     Fix common prefix for instrumentation filter
   + 84fadcf:
     Fix builds for filegroup targets with incompatible dependencies
   + e43825d:
     Revert "Remove
     --incompatible_blacklisted_protos_requires_proto_info"
   + 082d58d:
     Transform roots along with paths during output deletion.
   + e8835c1:
     AttributeContainer.Large now handles more than 127 attributes.
   + e1e8734:
     Add an env attribute to all test and binary rule classes
   + a87d7ed:
     Take no action to prefetch empty artifacts.
   + 3e969ff:
     Fix a couple of bugs with Incompatible Target Skipping
   + e667082:
     Pass --host_action_env to host options hostActionEnvironment
     attribute
   + 07400c0:
     Add --{no,}autodetect_server_javabase.
   + c833660:
     Only treat "env" and "env_inherit" attrs specially for native
     rules
   + 6a60b30:
     Fix coverage support when using default_java_toolchain. (bazelbuild#12801)
   + 4158a6f:
     Revert JacocoCoverage target to remote_java_tools_java_import
     and add a new target for remore_java_tools_filegroup. (bazelbuild#12813)
   + f6d30cf:
     Add windows_msvc back to conditions in bazel_tools.

New features:

  - Starlark-defined flags can now be shorthanded using --flag_alias.

Important changes:

  - Add --starlark:file option. This adds a capability to the
    (cquery)[https://docs.bazel.build/versions/master/cquery.html]
    feature in `--output=starlark` mode so that the expression to
    format output may
    be specified in a file.
  - Error messages emitted when an action fails are reworked to be
    more informative about the failing action. Some tooling may have
    to be updated as a result.
  - Querying with output=location now allows the relative_locations
    flag to properly display relative locations instead of the full
    path. Fixes bazelbuild#3497.
  - --flag_alias can now be used without
    --experimental_enable_flag_alias
  - Remove no-op `--deep_execroot` flag
  - The BEP uses `AbortReason.OUT_OF_MEMORY` for abort events when
    the build tool is crashing due to OOM.
  - Added flag `incompatible_display_source_file_location` for `blaze
    query location=output` to print the location of line 1 of the
    actual source files instead of the source file targets. Provides
    a solution to bazelbuild#8900.
  - The Starlark json module is now available.
    Use json.encode(x) to encode a Starlark value as JSON.
    struct.to_json(x) is deprecated and will be disabled by
    the --incompatible_struct_has_no_methods flag.
  - The flag `--incompatible_objc_compile_info_migration` is enabled
    by default.  See bazelbuild#10854.
  - The flag `--incompatible_objc_provider_remove_compile_info` is
    enabled by default.  See bazelbuild#11359.
  - Add `relative_ast_path` feature for darwin builds to relativize
    swiftmodule paths for debugging
  - Use proto.encode_text(x) to encode a Starlark value as textproto.
    struct.to_proto() is deprecated and will be disabled by
    the --incompatible_struct_has_no_methods flag.
    Both functions now reject list/dict fields that contain list/dict
    elements.
  - Add --starlark:file option. This adds a capability to the
    (cquery)[https://docs.bazel.build/versions/master/cquery.html]
    feature in `--output=starlark` mode so that the expression to
    format output may be specified in a file.
    See [Configured Query Starlark
    Output](//docs.google.com/document/d/1kL6Tdmp6uLBa9lq_DbUSjIC87glO
    zKIyPoBeF95Rs4c/edit)
  - Flipped --incompatble_proto_output_v2 for aquery.
  - The --incompatible_load_java_rules_from_bzl flag is now a no-op.
  - The --incompatible_load_proto_rules_from_bzl flag is now a no-op.
  - Flipped --incompatible_force_strict_header_check_from_starlark
  - --incompatible_string_replace_count is flipped and removed
    (bazelbuild#11244)
  - Bazel skips incompatible targets based on target platform
    and `target_compatible_with` contents. See
    https://docs.bazel.build/versions/master/platforms.html for more
    details.
  - Bazel returns exit code 36 (rather than 1) if it fails to start a
    subprocess in a local sandbox due to environmental issues, for
    example, if the argument list is too long.
  - //tools/build_defs/pkg:pkg_rpm is no longer built in to Bazel.
    See bazelbuild#11218 for
    instructions
    on how to migrate to the replacement.
  - Javac now supports multiplex workers.
  - The `--default_ios_provisioning_profile` flag has been removed
    (it was a no-op).
  - Add support for using AndroidX dependencies in
    data-binding-enabled targets.
  - Fix data-binding generation for android_local_test.
  - Enable debug_prefix_map_pwd_is_dot feature by default on macOS,
    this passes `-fdebug-prefix-map=$PWD=.` for every compile to
    remove absolute paths from debug info.
  - --incompatible_run_shell_command_string is enabled by default
    (bazelbuild#5903)
  - py_binary now tolerates package paths that contain hyphens ('-').
    Note that such paths might not be importable from within Python
    code.
  - C++ Starlark API requires linker_inputs wrapping library_to_link.
    bazelbuild#10860
  - Toolchain rule is extended with target_settings attribute.
  - --incompatible_restrict_string_escapes=true is now the default.
    Unnecessary backslashes such as "\." in string literals are now
    an error, instead of being silently treated as "\\.".
    To fix the error while preserving behavior, double the backlash.
    However, the error is often a sign that the original code was
    wrong.
  - Propagate instrumented files for transitive sources of
    `android_library` and `android_binary`
  - --local_resources and --incompatible_remove_local_resources have
    been removed. If you've been setting --local resources or
    --incompatible_remove_local_resources=false, you must migrate to
    using --local_ram_resources and --local_cpu_resources instead.
  - Update rules_cc to commit b1c40e1de81913a3c40e5948f78719c28152486d
  - --incompatible_avoid_conflict_dlls=true is now the default.
  - Dynamic execution now uses the new scheduler by default.
  - Dynamic execution now uses the new scheduler by default.
  - The new dynamic scheduler is now the default.

This release contains contributions from many people at Google, as well as Adam Liddell, Akira Baruah, Alexander Grund, Alex Eagle, Andrew Z Allen, Austin Schuh, Benjamin Peterson, Benson Muite, Brentley Jones, Cristian Hancila, Dan Halperin, Daniel Wagner-Hall, Dmitry Ivankov, Dmitry Ivankov, erenon, Eric Cousineau, Greg Estren, Gregor Jasny, Grzegorz Lukasik, Grzegorz Lukasik, hollste, Joe Lencioni, johnjbarton, Jonathan Perry, Jonathon Belotti, Keith Smiley, Kevin Gessner, Matt Davis, Matt Mackay, Menny Even Danan, Neeraj Gupta, Philipp Schrader, Ricardo Delfin, Ryan Beasley, Samuel Giddins, Simon Bjorklen, Simon Stewart, Stiopa Koltsov, Thi Doan, ThomasCJY, Timothy Klim, Tom de Goede, vectoralpha, V Vn Ngha, William A Rowe Jr, Xavier Bonaventura, Yannic Bonenberger, Yannic.

Release 3.7.2 (2020-12-17)

Baseline: a991db7

Cherry picks:

   + 0d14ec8:
     Release 3.7.0 (2020-10-20)
   + d563446:
     Add `-XDcompilePolicy=simple` to default javacopts
   + 6336264:
     Update rules_cc reference to head of rules_cc as of 2020-11-11.
   + b3f9346:
     Bump rules_cc to support llvm 11.0.0 clang-cl compiler on Windows
   + e055b43:
     Remove accidentally re-added
     tools/jdk/java_toolchain_default.bzl.
   + 02838a1:
     Avoid the spawn cache if executing dynamically.
   + d0efd7b:
     Release 3.7.1 (2020-11-24)
   + a689d67:
     Use getRunfilesPath for run_under executable path generation.
     getRootRelativePath doesn't return a valid runfiles path for
     external source files anymore after the recent external source
     root change. Also, it won't work for external labels either once
     the --nolegacy_external_runfiles becomes default. This fixes
     issue bazelbuild#12545.

Important changes:

  - Update rules_cc to commit b1c40e1de81913a3c40e5948f78719c28152486d

This release contains contributions from many people at Google, as well as William A Rowe Jr.

Release 3.7.1 (2020-11-24)

Baseline: a991db7

Cherry picks:

   + 0d14ec8:
     Release 3.7.0 (2020-10-20)
   + d563446:
     Add `-XDcompilePolicy=simple` to default javacopts
   + 6336264:
     Update rules_cc reference to head of rules_cc as of 2020-11-11.
   + b3f9346:
     Bump rules_cc to support llvm 11.0.0 clang-cl compiler on Windows
   + e055b43:
     Remove accidentally re-added
     tools/jdk/java_toolchain_default.bzl.
   + 02838a1:
     Avoid the spawn cache if executing dynamically.

Important changes:

  - Update rules_cc to commit b1c40e1de81913a3c40e5948f78719c28152486d

This release contains contributions from many people at Google, as well as William A Rowe Jr.

Release 3.7.0 (2020-10-20)

Baseline: a991db7

Incompatible changes:

  - The syntax //foo/BUILD can no longer be used on the command line
    to refer to the //foo:BUILD target. Use //foo:BUILD (preferred)
    or foo/BUILD instead. This does not affect BUILD/bzl files, where
    that syntax already didn't work.
  - This removes `--objc_header_scanner_tool`. The flag was primarily
    used internally, and to our knowledge, a compatible tool was
    never released. Therefore this flag is believed to be unused.

New features:

  - select() directly supports constraint_value (no need for an
    intermediate config_setting).

Important changes:

  - Non-android targets can again be built when
    android_sdk_repository is present but invalid.
  - Add a build variable for -install_name / -soname.
  - Add a build variable for -install_name / -soname.
  - Include "resources" attr in dependency attributes for java_*
    coverage configuration.
  - --trim_test_configuration should work for almost all cases when a
    non-test target depends on a test.
  - Javac now supports multiplex workers.
  - Javac now supports multiplex workers.
  - Blaze now allows symbolic links that point to their own ancestor
    unless they are traversed recursively by e.g. a //... recursive
    target pattern or a recursive glob.
  - Blaze now allows symbolic links that point to their own ancestor
    unless they are traversed recursively by e.g. a //... recursive
    target pattern or a recursive glob.
  - Blaze now allows symbolic links that point to their own ancestor
    unless they are traversed recursively by e.g. a //... recursive
    target pattern or a recursive glob.
  - Generated Go protobufs no longer depend on //net/proto2/go:proto

This release contains contributions from many people at Google, as well as Benjamin Peterson, Cristian Hancila, Ed Schouten, Fredrik Medley, Greg Estren, jgehw, Jin, Kalle Johansson, Keith Smiley, Kseniia Vasilchuk, Michael Eisel, Michael Hackner, Michael Krasnyk, Mostyn Bramley-Moore, Ruixin Bao, Samuel Giddins, Simon Stewart, Torgil Svensson, Ulf Adams, Vasilios Pantazopoulos, Wenyu Zhang, Yannic Bonenberger, yoav-steinberg.

Release 3.6.0 (2020-10-06)

Baseline: aa0d97c

Cherry picks:

   + 32c88da:
     Patch RuleContext for android_binary.deps to restore legacy
     behavior.
   + db9fc88:
     android_test also needs the legacy behavior in
     RuleContext.getPrerequisites.
   + 144d514:
     Update android_sdk_repository to create a valid, but useless,
     repository
   + bb11f92:
     Patch upb to fix build error with gcc 10
   + 9f06be4:
     Patch upb to fix build error with gcc 10 (third_party)
   + b67b75e:
     Fix issue where libtool_check_unique isn't found for sandbox
     builds

Incompatible changes:

  - `--experimental_ui_limit_console_output` is removed. Users of
    `--experimental_ui_limit_console_output=1` for silencing terminal
    output should use `--ui_event_filters=` instead.
  - --proto:instantiation_stack must be enabled in addition to
    --record_rule_instantiation_callstack to see call stack in proto
    output from blaze query.

New features:

  - cc_common.compile support for include_prefix/strip_include_prefix
  - Multiplexed persistent workers: Use
    --experimental_worker_max_multiplex_instances to configure the
    number of WorkRequests that are sent concurrently to one worker
    process. The --worker_max_instances flag will no longer be used
    to determine max instances for multiplex workers, since the two
    have different resource requirements. Multiplex workers will by
    default have a max instances of 8.

Important changes:

  - The prelude file (//tools/build_rules:prelude_bazel) is now
    processed as a Starlark module, rather than being sourced into
    the BUILD file textually. This may cause slight breakages
    depending on the content of the prelude file. (Use of the prelude
    file is discouraged as it will be removed in the long term.)
  - Removed --experimental_ignore_deprecated_instrumentation_spec and
    cleaned up the old deprecated behavior.
  - Added CODEBASE.md, a description of the Bazel codebase.
  - Removed the flag --experimental_transparent_compression.
  - Removed the flag --experimental_action_args.
  - Stop needlessly parsing WORKSPACE files from external
    repositories.
  - Dot ('.') is now allowed in workspace names. See
    bazelbuild#11837.
  - This change can cause memory and performance regressions for some
    builds with C++ dependencies, due to extra actions being executed.
    RELNOTES: None
  - Building Android apps for legacy multi-dex (pre-L) now require a
    main-dex list if the application does not fit into a single DEX
    file.
  - Puts the experimental_worker_multiplex flag to use.
  - In Starlark, the Args object supports a new parameter file format
    'flag_per_line', compatible with the Abseil flags library.
  - The flag --incompatible_no_support_tools_in_action_inputs is
    removed.
  - Support for NDK 21 added
  - Bazel will now skip printing action stdout/stderr contents if
    they exceed --experimental_ui_max_stdouterr_memory_bytes.
  - The Starlark interpreter now correctly emits an error
     if the operand of the first loop in a list comprehension
     refers to a variable bound by a later loop, such as y in
     this example:
       [e1 for x in f(y) in e2 for y in e3] # error: undefined y
                      ^
     This may cause latent dynamic errors to become static errors.
  - Added support for a 'supports-graceful-termination' execution
    requirement and tag, which causes Bazel to send a SIGTERM to any
    tagged
    actions before sending a delayed SIGKILL. This is to give
    actions, and more
    specifically tests, a chance to clean up after themselves.
  - Non-android targets can again be built when
    android_sdk_repository is present but invalid.

This release contains contributions from many people at Google, as well as Benjamin Peterson, Daniel Wagner-Hall, Dave MacLachlan, David Ostrovsky, Emil Kattainen, George Gensure, Greg Estren, Keith Smiley, mai12, Mai Hussien, Michael Eisel, Per Halvor Tryggeseth, Ruixin Bao, Samuel Giddins, Steeve Morin, Thi Doan, Tom de Goede, Ulf Adams, Zhongpeng Lin.

Release 3.5.1 (2020-10-01)

Baseline: 889bc0b

Cherry picks:

   + a7a0d48:
     Make no-op starlark transition not affect the output directory.
   + b37c51c:
     Add include_prefix and strip_include_prefix to cc_common.compile
   + f6ad35f:
     Delete --experimental_transparent_compression
   + 39bc97e:
     Remove --experimental_action_args
   + b970667:
     Stop needlessly parsing WORKSPACE files from external
     repositories.
   + e574d55:
     Allow hyphen char in workspace name
   + 9993785:
     Allow dot ('.') in workspace names.
   + b3ac8f6:
     Patch upb to fix build error with gcc 10
   + 26cbf77:
     Patch upb to fix build error with gcc 10 (third_party)
   + f1f9411:
     Fix incorrect rule class digest when creating rules through
     macros.
   + 6b591a7:
     Prepare for bazel to run with shrunken r8.jar
   + 7a11752:
     Don't run DexFileMergerTest as it is not supported for all
     r8.jar's

New features:

  - cc_common.compile support for include_prefix/strip_include_prefix

Important changes:

  - Removed the flag --experimental_transparent_compression.
  - Removed the flag --experimental_action_args.
  - Stop needlessly parsing WORKSPACE files from external
    repositories.
  - Dot ('.') is now allowed in workspace names. See
    bazelbuild#11837.

This release contains contributions from many people at Google, as well as David Ostrovsky.

Release 3.5.0 (2020-09-02)

Baseline: 889bc0b

Cherry picks:

   + a7a0d48:
     Make no-op starlark transition not affect the output directory.
   + b37c51c:
     Add include_prefix and strip_include_prefix to cc_common.compile
   + f6ad35f:
     Delete --experimental_transparent_compression
   + 39bc97e:
     Remove --experimental_action_args
   + b970667:
     Stop needlessly parsing WORKSPACE files from external
     repositories.
   + e574d55:
     Allow hyphen char in workspace name
   + 9993785:
     Allow dot ('.') in workspace names.

New features:

  - cc_common.compile support for include_prefix/strip_include_prefix

Important changes:

  - Removed the flag --experimental_transparent_compression.
  - Removed the flag --experimental_action_args.
  - Stop needlessly parsing WORKSPACE files from external
    repositories.
  - Dot ('.') is now allowed in workspace names. See
    bazelbuild#11837.

This release contains contributions from many people at Google, as well as David Ostrovsky.

Release 3.4.1 (2020-07-14)

Baseline: 7404d17

Cherry picks:

   + f31f2d7:
     fixup! Gracefully handle the lack of subreaper support in Linux.
   + 3a4f221:
     Revert "Replace the remaining dependencies for Bazel Debian
     build (third_party)"
   + c55ec0f:
     Revert "Upgrade gRPC to 1.26.0"

This release contains contributions from many people at Google, as well as Ryan Beasley.

Release 3.4.0 (2020-07-13)

Baseline: 7404d17

Cherry picks:

   + a4334be:
     fixup! Gracefully handle the lack of subreaper support in Linux.

Incompatible changes:

  - This removes the short-lived --process_wrapper_extra_flags
    flag, which was introduced primarily to roll out a bug fix.
    Unfortunately,
    this made us inadvertently expose all of the process-wrapper's
    command line
    interface to the public, which should not have happened.  Given
    the corner
    case of the utility of this flag, the lack of documentation for
    it, and the
    fact that it only appeared in a single release, we are treating
    this as a
    bug instead of a backwards compatibility breakage.

New features:

  - bazel info: Allow to specify multiple keys.
  - Support code coverage with GCC 9.

Important changes:

  - Allow InstrumentedFilesInfo fields to be read from Starlark.
  - The --starlark_cpu_profile=<file> flag writes a profile in
    pprof format containing a statistical summary of CPU usage
    by all Starlark execution during the bazel command. Use it
    to identify slow Starlark functions in loading and analysis.
  - The --debug_depset_flag has been removed as it is in effect
    always on at no cost.
  - Rule authors should use the
    incompatible_use_toolchain_transition rule attribute to migrate
    to using
    the toolchain transition. jcater to udpate notes further.
  - `apple_binary` rules now accept the `stamp` attribute with the
    same
    semantics that it has in `cc_binary` rules.
  - --incompatible_objc_provider_remove_compile_info turns off
    the compile info/mege_zip Starlark APIs in ObjcProvider.  See
    bazelbuild#11359.
  - The --debug_depset_flag has been removed as it is in effect
    always on at no cost.
  - Fix behavior of ctx.actions.write so content is written without
    an incorrect encoding to UTF-8.
    See bazelbuild#10174 for details.
  - Collect more performance metrics for worker execution.
  - Add flag --incompatible_force_strict_header_check_from_starlark
  - Configure coverage and runfiles for sh_library.
  - Adds --incompatible_blacklisted_protos_requires_proto_info to
    indicate whether proto_lang_toolchain.blacklisted_protos requires
    ProtoInfo.

This release contains contributions from many people at Google, as well as Andrzej Guszak, Benjamin Peterson, Benjamin Romano, Carlos Eduardo Seo, Claudio Bley, dannysullivan, David Ostrovsky, George Gensure, Graham Jenson, Grzegorz Lukasik, Gunnar Wagenknecht, Henk van der Laan, Jin, John Millikin, Marin Baron, Nikhil Marathe, Robin Nabel, Ryan Beasley, Samuel Giddins, Sergey Balabanov, utsav-dbx, Vo Van Nghia, Yannic Bonenberger.

Release 3.3.1 (2020-06-30)

Baseline: c063b5c

Cherry picks:

   + cb798a4:
     Restore missing Building with Platforms docs.
   + 9be9767:
     Release 3.3.0 (2020-06-17)
   + 3b0439e:
     Fix incorrect assumption of desugar persistent worker conditional

This release contains contributions from many people at Google, as well as .