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Baseline: 5c3f5c9 Cherry picks: + f96f037: Windows, Java launcher: Support jar files under different drives + ff8162d: sh_configure.bzl: FreeBSD is also a known platform + 7092ed3: Remove unneeded exec_compatible_with from local_sh_toolchain + 57bc201: Do not autodetect C++ toolchain when BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1 is present + 35a78c0: remote: recursively delete incomplete downloaded output directory. + 3c9cd82: distfile: pack the archives needed later in the build + 27487c7: Slightly refactor SpawnAction to improve env handling + 1b333a2: Fix Cpp{Compile,Link}Action environment and cache key computation + 3da8929: Make SymlinkTreeAction properly use the configuration's environment + eca7b81: Add a missing dependency from checker framework dataflow to javacutils Incompatible changes: - Add --incompatible_disallow_legacy_javainfo flag. - Added flag --incompatible_disallow_old_style_args_add to help migrate from args.add() to args.add_all() / args.add_joined() where appropriate. New features: - Bash,runfiles: use the new platform-independent library in `@bazel_tools//tools/bash/runfiles` to access runfiles (data-dependencies). See https://github.com/bazelbuild/bazel/blob/master/tools/bash/runfile s/runfiles.bash for usage information. - TemplateVariableInfo can now be constructed from Skylark. - The java_host_runtime_alias rule is now implemented in Java. Important changes: - Flip default value of --experimental_shortened_obj_file_path to true, Bazel now generates short object file path by default. - Introduce fdo_profile rule that allows architecture-sensitive specification of fdo profiles. - canonicalize-flags no longer reorders the flags - CppRules: optional_compiler_flag was removed from CROSSTOOL, use features instead. - Labels of the form ////foo are disallowed. - The `/` operator is deprecated in favor of `//` (floor integer division). Try the `--incompatible_disallow_slash_operator` flag to ensure your code is forward-compatible. - Flip default value of --experimental_shortened_obj_file_path to true, Bazel now generates short object file path by default. - Exposed "mnemonic" and "env" fields on skylark "Action" objects. - Removed flag `--incompatible_disallow_toplevel_if_statement`. - Remove vestigial 'deps' and 'data' attributes from proto_lang_toolchain - Args objects (ctx.actions.args()) have new methods add_all() and add_joined() for building command lines using depsets. - `FileType` is deprecated and will be removed soon. Try the `--incompatible_disallow_filetype` flag to ensure your code is forward-compatible. - Introduce absolute_path_profile attribute that allows fdo_profile to accept absolute paths. - Support two-arg overloads for ctx.actions.args (eg. args.add("--foo", val)) - Introduce 'tools' attribute to ctx.actions.run. - Fixed error message for proguard_apply_dictionary. - "bazel run" now lets one run interactive binaries. The BUILD_WORKSPACE_DIRECTORY and BUILD_WORKING_DIRECTORY environment variables indicate the working directory and the workspace root of the Bazel invocation. Tests are provided with an approximation of the official test environment. - repository rules are no longer restricted to return None. - Add --high_priority_workers flag. - CppRules: Feature configuration can be created from Skylark - Adds new-style JavaInfo provider constructor. - Make java_common.compile now uses java_toolchain javacopts by default; explicitly retrieving them using java_common.default_javac_opts is unnecessary. - CppRules: C++ command lines and env variables for C++ actions can be retrieved from feature configuration. - Skylark rule definitions may advertise providers that targets of the rule must propagate. - Bazel now supports running actions inside Docker containers. To use this feature, run "bazel build --spawn_strategy=docker --experimental_docker_image=myimage:latest". - Remote execution works for Windows binaries with launchers. - Fixing start/end lib expansion for linking. There were many cases where archive files were still being used with toolchains that support start/end lib. This change consolidates the places that make that decision so they can be more consistent. - Add support for reporting an error if android_test.binary_under_test contains incompatible versions of deps - We replaced the --experimental_local_disk_cache and --experimental_local_disk_cache_path flags into a single --disk_cache flag. Additionally, Bazel now tries to create the disk cache directory if it doesn't exist. - Save Blaze memory by not storing LinkerInput objects in LinkCommandLine - In the JavaInfo created by java_common.create_provider now includes both direct and transitive arguments in transitive_compile_time_jars and transitive_runtime_jars - Allow --worker_max_instances to take MnemonicName=value to specify max for each worker. - Allow java_toolchain.header_compiler to be an arbitrary executable
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