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Baseline: 7bf7f03 Cherry picks: + fd52341: update bazel-toolchains pin to latest release Part of changes to allow bazelci to use 0.19.0 configs. RBE toolchain configs at or before 0.17.0 are not compatible with bazel 0.19.0 or above. + 241f28d: Revert "Toggle --incompatible_disable_late_bound_option_defaults flag." + f7e5aef: Add cc_toolchain targets for the new entries in the default cc_toolchain_suite. + d2920e3: Revert "WindowsFileSystem: open files with delete-sharing" [Breaking changes in 0.20](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Abreaking-change-0.20) - [--incompatible_remove_native_http_archive](bazelbuild#6570). - [--incompatible_remove_native_git_repository](bazelbuild#6569). - [--incompatible_disable_cc_toolchain_label_from_crosstool_proto](bazelbuild#6434). - [--incompatible_disable_depset_in_cc_user_flags](bazelbuild#6384). - [--incompatible_disable_cc_configuration_make_variables](bazelbuild#6381). - [--incompatible_disallow_conflicting_providers](bazelbuild#5902). - [--incompatible_range_type](bazelbuild#5264). [0.20 is a migration window for the following changes](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Amigration-0.20) - [--incompatible_use_jdk10_as_host_javabase](bazelbuild#6661) - [--incompatible_use_remotejdk_as_host_javabase](bazelbuild#6656) - [--incompatible_disable_sysroot_from_configuration](bazelbuild#6565) - [--incompatible_provide_cc_toolchain_info_from_cc_toolchain_suite](bazelbuild#6537) - [--incompatible_disable_depset_in_cc_user_flags](bazelbuild#6383) - [--incompatible_package_name_is_a_function](bazelbuild#5827) [Breaking changes in the next release (0.21)](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Abreaking-change-0.21) - [--incompatible_use_jdk10_as_host_javabase](bazelbuild#6661) - [--incompatible_use_remotejdk_as_host_javabase](bazelbuild#6656) - [--incompatible_disable_sysroot_from_configuration](bazelbuild#6565) - [--incompatible_provide_cc_toolchain_info_from_cc_toolchain_suite](bazelbuild#6537) - [--incompatible_disable_depset_in_cc_user_flags](bazelbuild#6383) - [--incompatible_disallow_data_transition](bazelbuild#6153) - [--incompatible_package_name_is_a_function](bazelbuild#5827) - [--incompatible_disallow_slash_operator](bazelbuild#5823) - [--incompatible_static_name_resolution](bazelbuild#5637) Incompatible changes: - the --experimental_no_dotd_scanning_with_modules command line argument is not supported anymore. - The --prune_cpp_modules command line option is not supported anymore. - the --experimental_prune_cpp_input_discovery command line option is not supported anymore. New features: - Added support for Android NDK r18. Important changes: - The 'default' parameter of attr.output and attr.output_list is removed. This is controlled by --incompatible_no_output_attr_default - A number of platform-related Starlark APIs which were previously marked "experimental" are now disabled by default, and may be enabled via --experimental_platforms_api - Make legacy-test-support ("legacy_test-<api-level>") from android_sdk_repository neverlink. The legacy test support libraries shouldn't be built into test binaries. To make them available at runtime, developers should declare them via uses-library: https://developer.android.com/training/testing/set-up-project#andr oid-test-base - query remote server Capabilities (per REAPI v2) - CppRules: All cc_toolchains depended on from cc_toolchain_suite.toolchains are now analyzed when not using platforms in order to select the right cc_toolchain. - removed obsolete --explicit_jre_deps flag. - Incompatible flag --incompatible_disable_legacy_cpp_toolchain_skylark_api was flipped. - Improve error messaging when unsupport proguard options are specified at the library level. - Incompatible flag --incompatible_disable_legacy_cpp_toolchain_skylark_api was flipped. - Incompatible flag --incompatible_disable_legacy_cpp_toolchain_skylark_api was flipped. - The --incompatible_disable_late_bound_option_defaults flag has been flipped (bazelbuild#6384) - Incompatible flag --incompatible_disable_legacy_flags_cc_toolchain_api was flipped (bazelbuild#6434) - Fixed issue where ctx.resolve_command created conflicting intermediate files when resolve_command was called multiple times within the same rule invocation with a long command attribute. - Incompatible flag --incompatible_disable_cc_configuration_make_variables was flipped (bazelbuild#6381) - If the --javabase flag is unset, it Bazel locates a JDK using the JAVA_HOME environment variable and searching the PATH. If no JDK is found --javabase will be empty, and builds targeting Java will not be supported. Previously Bazel would fall back to using the embedded JDK as a --javabase, but this is no longer default behaviour. A JDK should be explicitly installed instead to enable Java development - Bazel will now shut down when idle for 5 minutes and the system is low on RAM (linux only). - CROSSTOOL file is now read from the package of cc_toolchain, not from the package of cc_toolchain_suite. This is not expected to break anybody since cc_toolchain_suite and cc_toolchain are commonly in the same package. - All overrides of Starlark's ctx.new_file function are now deprecated. Try the `--incompatible_new_actions_api` flag to ensure your code is forward-compatible. - --incompatible_disable_cc_toolchain_label_from_crosstool_proto was flipped. - Introduce --(no)shutdown_on_low_sys_mem startup flag to toggle idle low-memory shutdown, disabled by default. - --incompatible_disable_cc_toolchain_label_from_crosstool_proto was flipped. - --incompatible_disable_cc_toolchain_label_from_crosstool_proto was flipped. - CppRules: All cc_toolchains depended on from cc_toolchain_suite.toolchains are now analyzed when not using platforms in order to select the right cc_toolchain. - The function `attr.license` is deprecated and will be removed. It can be disabled now with `--incompatible_no_attr_license`. - `range()` function now returns a lazy value (`--incompatible_range_type` is now set by default). - The code coverage report now includes the actual paths to header files instead of the ugly, Bazel generated, virtual includes path. - `--incompatible_disallow_conflicting_providers` has been switched to true - Add new flag `--incompatible_disable_systool_from_configration` to disable loading the systool from CppConfiguration. - Add new flag `--incompatible_disable_sysroot_from_configuration` to disable loading the systool from CppConfiguration. - Sorting remote Platform properties for remote execution. May affect cache keys! - Use different server log files per Bazel server process; java.log is now a symlink to the latest log. This release contains contributions from many people at Google, as well as a7g4 <a7g4@a7g4.net>, Alan <alan.agius@betssongroup.com>, Asaf Flescher <asafflesch@gmail.com>, Benjamin Peterson <bp@benjamin.pe>, Ed Schouten <ed.schouten@prodrive-technologies.com>, George Gensure <ggensure@uber.com>, George Kalpakas <kalpakas.g@gmail.com>, Greg <gregestren@users.noreply.github.com>, Irina Iancu <iirina@users.noreply.github.com>, Keith Smiley <keithbsmiley@gmail.com>, Loo Rong Jie <loorongjie@gmail.com>, Mark Zeren <mzeren@vmware.com>, Petros Eskinder <petroseskinder@users.noreply.github.com>, rachcatch <rachelcatchpoole@hotmail.com>, Robert Brown <robert.brown@gmail.com>, Robert Gay <robert.gay@redfin.com>, Salty Egg <2281521+zhouhao@users.noreply.github.com>.
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