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Baseline: 5935259 Cherry picks: + fe81b49: Support of using the absolute path profile for LLVM's Context Sensitive FDO + ce5e718: Demote OptionProcessor from globals + 3ed9d36: Properly wire up BES half-close. The lack thereof was a simple oversight. + 4ca768e: standardize graph output indentation with 2 spaces + aff189a: Make sure default Linux artifacts have an associated action, even when artifact names are altered. + 8c3b3fb: Failures early in package loading will now fail all --keep_going builds. + 123c68d: Warn in more cases of possible Python version mismatch in host config + 052167e: Add a non-strict autodetecting Python toolchain + 6ef6d87: Default java toolchain target + 50fa3ec: Fix problems with the non-strict Python toolchain + e2a626c: Automated rollback of commit bc6f7cb. + 6efc5b7: Treat existence of managed directories as a part of repository dirtiness. + 3a4be3c: Add /usr/local/bin to default PATH under strict action env + 5c1005c: Automated rollback of commit 536a166. Incompatible changes: - --incompatible_disable_objc_provider_resources no longer has effect. Use of deprecated resource fields on the Objc provider is now disallowed regardless of this flag. - deleted deprecated --experimental-remote-retry* flags, please use --remote_retries instead - flipped --incompatible_list_based_execution_strategy_selection flag to be true by default. See #7480 for details. - Octal integer literals in Starlark are required to start with "Oo". - The "native" module is no longer available in BUILD files, all its members can be accessed directly as global symbols. This can be temporarily reverted by providing --incompatible_disallow_native_in_build_file=false as a flag to Blaze. - The "native" module is no longer available in BUILD files, all its members can be accessed directly as global symbols. This can be temporarily reverted by providing --incompatible_disallow_native_in_build_file=false as a flag to Blaze. - Turn off binary style profile format. - The "native" module is no longer available in BUILD files, all its members can be accessed directly as global symbols. This can be temporarily reverted by providing --incompatible_disallow_native_in_build_f... - cleanup that affects user provided apple frameworks is now enabled by default. See #7944 for more info. - Python rules now determine the Python runtime using toolchains rather than `--python_top` and `--python_path`, which are deprecated. See [#7899](#7899) for information on declaring Python toolchains and migrating your code. As a side-benefit, this addresses [#4815](#4815) (incorrect interpreter version used) on non-Windows platforms. Note however that some builds break due to getting the version they asked for -- consider setting `python_version = "PY2"` on Python 2 targets and `--host_force_python=PY2` if any Python 2 targets are used in the host configuration. You can temporarily opt out of this change with `--incompatible_use_python_toolchains=false`. - Depsets can't be iterated over unless they're converted to lists using the .to_list() method. Use --incompatible_depset_is_not_iterable=false to temporarily restore the previous behaviour. New features: - Bash, runfiles: the copy-pasted init code of the Bash runfiles library is now shorter, see `tools/bash/runfiles/runfiles.bash`. The rlocation() implementation is the same. - Bash, runfiles: the copy-pasted init code of the Bash runfiles library is now shorter, see `tools/bash/runfiles/runfiles.bash`. The rlocation() implementation is the same. - Bash, runfiles: the copy-pasted init code of the Bash runfiles library is now shorter, see `tools/bash/runfiles/runfiles.bash`. To use the new init code, you need Bazel 0.27 or newer. The old (longer) init code still works. Important changes: - The `outputs` parameter of the `rule()` function is deprecated and attached to flag `--incompatible_no_rule_outputs_param`. Migrate rules to use `OutputGroupInfo` or `attr.output` instead. See #7977 for more info. - The --incompatible_disable_objc_library_resources flag is being removed. Please remove it from your configs as it otherwise will fail the build. - Add a generic additional_linker_inputs attribute on cc_binary rules. - Windows, C++ autoconfigure: BAZEL_VC and BAZEL_VS may now have quotes, so if you set these envvars' values in cmd.exe via TAB-completion then you no longer need to remove the surrounding quotes. - pkg_deb has new attributes: `config` and `templates` that can be used for integration with debconf - Allow cc_import() of a DLL with no interface library on Windows, used to document runtime dependencies. - All host-configured Python tools that are built for the wrong Python version will now emit a warning message when they exit with non-zero status. See #7899. - deprecated --remote_local_fallback_strategy. Use `--strategy=remote,local` instead. See #7480. - Introduce --incompatible_disable_native_android_rules flag - The Android desugaring actions now support a persistent worker mode for faster local build performance. Enable it with `--strategy=Desugar=worker`. - --incompatible_static_name_resolution_in_build_files is now enabled by default - --incompatible_disable_deprecated_attr_params is now enabled by default (#5818) - Repository containing autoconfigured C++ toolchain `@local_config_cc` has been split in 2 - see `local_config_cc_toolchains`. - --incompatible_string_join_requires_strings is now enabled by default - Flag --incompatible_new_actions_api is enabled by dewfault (#5825) - New flag `--incompatible_disallow_empty_glob`. See #8195 - --incompatible_no_kwargs_in_build_files is enabled by default - Incompatible flag `--incompatible_require_ctx_in_configure_features` has been flipped. See #7793 for more information. - `BAZEL_USE_XCODE_TOOLCHAIN=1` tells Bazel not to look for Xcode to decide whether to enable toolchains for Apple rules, but to assume Xcode is available. Can be also used when building on Darwin and no C++ or ObjC is being built, so there is no need to detect Xcode. - Android desugaring actions now use persistent workers by default. This has been measured to provide up to 20% reduction in build times. To disable it, use the `--strategy=Desugar=sandboxed` flag. See #8342 and #8427 for more details on local build speed optimization for Android apps. - Fixed an issue with Android builds where `--fat_apk_cpu` doesn't pack all selected shared libraries from `aar_import` targets into the APK. See [#8283](#8283). - Turn on --experimental_starlark_config_transitions by default for starlark transitions (see https://docs.bazel.build/versions/master/skylark/config.html#user- defined-transitions for more info) - Turn on --experimental_build_setting_api by default for starlark build settings (see https://docs.bazel.build/versions/master/skylark/config.html#user- defined-build-settings for more info) - Incompatible flag `--incompatible_dont_enable_host_nonhost_crosstool_features` has been flipped. See #7407 for more information. - Added support for Android NDK 19 and 20. - Flip --incompatible_no_support_tools_in_action_inputs - --remote_executor, --remote_cache or --bes_backend=someurl.com would be treated as grpcs://someurl.com, if the --incompatible_tls_enabled_removed flag enabled. See #8061 for details. - Add new options --cs_fdo_absolute_path= to support the absolute path profile for LLVM's context-sensitive FDO. - When `--incompatible_strict_action_env` is enabled, the default `PATH` now includes `/usr/local/bin`. - Turn on --experimental_build_setting_api by default for starlark build settings (see https://docs.bazel.build/versions/master/skylark/config.html#user- defined-build-settings for more info) This release contains contributions from many people at Google, as well as Alex Thompson, Andy Scott, Benjamin Peterson, David McNett, Drew Gassaway, Ira Shikhman, James deBoer, Jay Vercellone, Jingwen Chen, Josh Rosen, Keith Smiley, Laurent Le Brun, Lee Mracek, Marwan Tammam, Matt Passell, Michael Hackner, Michal Majcherski, Patrick Niklaus, Peter Mounce, Ricky Pai, Steeve Morin, szakmary, Takuto Ikuta, Vladimir Chebotarev, Yen-Chi Chen.
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