0.7.0

Release 0.7.0 (2017-10-18)

Baseline: 5cc6246

Cherry picks:

• e79a110:
  Windows,bootstrapping: fix build_windows_jni.sh

Incompatible changes:

• The --output=location flag to 'bazel query' cannot be used with
  query expressions that involve the 'buildfiles' or 'loadfiles'
  operators. This also applies to 'genquery' rules.
• Operators for equality, comparison, 'in' and 'not in' are no
  longer associative,
  e.g. x < y < z is now a syntax error. Before, it was parsed
  as: (x < y) < z.
• In strings, octal sequences greater than \377 are now forbidden
  (e.g. "\600").
  Previously, Blaze had the same behavior as Python 2, where
  "\450" == "\050".
• Using tabulation for identation is now fobidden in .bzl files
• load is now a language keyword, it cannot be used as an
  identifier
• lvalues must have define at least one variable (i.e. we forbid
  [] = f()).
• Fixed a bug whereby multiple load() statements could appear on
  the same line
• -extra_checks:off is no longer supported; use
  -XepDisableAllChecks instead
• java_common.java_toolchain_attr is removed. Depend on the
  java_toolchain_alias() rule to accomplish the same thing.
• cc_common.cc_toolchain_attr and java_common.java_runtime_attr are
  not supported anymore and were replaced with the
  cc_toolchain_alias() and java_runtime_alias() rules.
• Noop flag --deprecated_generate_xcode_project deleted.
• Objects in Skylark are converted to strings in a more descriptive
  and less harmful way (they don't leak information that shouldn't
  be accessed by Skylark code, e.g. nondeterministic memory addresses
  of objects).
• set is deprecated in BUILD and .bzl files, please use depset
  instead. Ordering names have also been changed, please use "default",
  "postorder", "preorder", and "topological" instead of "stable",
  "compile", "naive_link", and "link" correspondingly.
• Integer overflow (on signed 32 bit numbers) in BUILD/bzl files is
  an error.
• Keyword-only syntax in a function definition is now forbidden
  e.g. def foo(a, *, b) or def foo(a, *b, c)
• --incompatible_comprehension_variables_do_not_leak defaults to
  "true."
  Iteration variable becomes inaccessible after a list/dict
  comprehension.
• @bazel_tools//tools/build_defs/docker:docker.bzl is no longer
  available, please see https://github.com/bazelbuild/rules_docker.

New features:

• Zipped LLVM profiles are now supported.
• LIPO maps to ThinLTO for LLVM builds.
• Change to handle LLVM FDO zipped profile contents correctly.
• Do not disable fully dynamic linking with ThinLTO when invoked
  via LIPO options.
• There is now a 'siblings' query function. See the query
  documentation for more details.
• Added the print_action command, which outputs the
  actions needed to build a given target in the form of an
  ExtraActionSummary proto in text format.
• android_binary now supports proguard_apply_dictionary to specify
  a custom dictionary to use for choosing names to obfuscate
  classes and members to.

Important changes:

• Windows: bazel clean --expunge works
• First argument of 'load' should be a label. Path syntax is
  deprecated (label should start with '//' or ':').
• Octal prefix '0' is deprecated in favor of '0o' (use 0o777
  instead of 0777).
• The extension_safe attribute of apple_binary no longer validates
  transitive dependencies are compiled against extension_safe APIs.
• Parentheses around the tuple are now mandatory in [a for b in c
  if 1, 2]
• Adjust the thresholds for --test_verbose_timeout_warnings so that
  it can recommending timeout increases and won't recommend
  timeouts that are too close to the actual timeout.
• Iterating on a depset object is deprecated. If you need an
  iterable, call the .to_list() method first.
• Bazel now uses tools from action_configs in Crosstool by default
  (as oposed to using top level tools).
• Incremental dexing errors on combination of --multidex=off and
  either --main-dex-list or --minimal-main-dex.
• When using the dictionary literal syntax, it is now an error to
  have duplicated keys (e.g. {'ab': 3, 'ab': 5}).
• New property on android_sdk: aapt2
  Choose the version of aapt on android_binary
• Add idl_preprocessed attribute to android_library, so that
  preprocessed aidl files can be passed to android_library for
  compiling
• Bazel's remote_worker backend for remote execution supports
  sandboxing on Linux now. Check
  https://github.com/bazelbuild/bazel/blob/master/src/tools/remote_w
  orker/README.md for details.
• Allows flags that expand to take values.
• Make querying attributes formed by selector lists of list types
  more efficient by no longer listing every possible combination of
  attribute value but by more compactly storing the possible values
  of the list.
• writing build events to a file is no longer experimental
• set --rewrite_calls_to_long_compare to false by default.
• ObjC and C++ coverage feature is unified under name 'coverage'
• Enable --incremental_dexing for Android builds by default. Note
  that some dexopts are incompatible with incremental dexing,
  including --force-jumbo.
• Evaluation will soon use checked arithmetics and throw an error
  instead of overflow/underflow.
• Implicit iteration in the CROSSTOOL has been removed, use
  explicit 'iterate_over' message.
• Add option for Android specific grte_top
• Crosstool patches are only applied if the toolchain doesn't define
  'no_legacy_features' feature.
• 'platform_type' is now a mandatory attribute on apple_binary and
  apple_static_library rules.
  If this change breaks your build, feel free to add platform_type
  = 'ios' to any apple_binary and apple_static_library
  targets in your project, as this was the previous default
  behavior.
• Remove apple_watch2_extension build rule. Users should be using
  the skylark watchos_application and watchos_extension rules.
  https://github.com/bazelbuild/rules_apple has details.
• Check stderr to detect if connected to a terminal. Deprecate
  --isatty.
• Commands that shut down the server (like "shutdown") now ensure
  that the server process has terminated before the client process
  terminates.
• Remove apple_watch1_extension and apple_watch_extension_binary
  rules. Users should be using the skylark watchos_application and
  watchos_extension rules.
  https://github.com/bazelbuild/rules_apple has details.
• Windows: Wrapper-less CROSSTOOL becomes default now.
  set USE_MSVC_WRAPPER=1 if you still want to use wrapper script.
• Ignore --glibc in the Android transition.
• Remove --experimental_android_use_singlejar_for_multidex.
• nocopts now also filter copts
• 'strip' action is now configured via feature configuration
• The Build Event Service (BES) client now properly supports
  Google Applicaton Default Credentials.
• Flags from action_config get added first to the command line
  first, before the flags from features.
• update dexing tools to Android SDK 26.0.1
• Bazel Android support now requires build-tools 26.0.1 or later.
• bazel info output_path no longer relies on the root directory
  filename being equal to the workspace name.
• The print function now prints debug messages instead of
  warnings.
• speedup of incremental dexing tools
• --announce_rc now controls whether bazelrc startup options are
  printed to stderr.
• Removing a few unused objc_provider keys.
• Improved logging when workers have to be restarted due to its
  files having changed.
• Top-level if statements are now forbidden.
• Java protos are compiled to Java 7 bytecode.
• All Android builds now use the desugar tool to support some Java
  8 features by default. To disable, use the --nodesugar_for_android flag.
• Skylark-related options may now appear as "common" command
  options in the .bazelrc
• Python is now required to build bazel.
• New --build_runfile_manifests flag controls production of
  runfiles manifests.
• Enable debug info for Java builds
• Allow java_lite_proto_library in the deps of android rules.
• .so files in APKs will be memory-page aligned when
  android_binary.nocompress_extensions contains ".so" and
  --experimental_android_use_nocompress_extensions_on_apk is
  specified.
• Skylark providers can specify allowed fields and their
  documentation.
• Support ctx.actions.args() for more efficient Skylark command
  line construction.
• The remote HTTP/1.1 caching client (--remote_rest_cache) now
  distinquishes between action cache and CAS. The request URL for
  the action cache is prefixed with 'ac' and the URL for the CAS
  is prefixed with 'cas'.
• JavaInfo is a preferred alias to java_common.provider.
• J2ObjC version updated to 2.0.3.
• A new Java coverage implementation is available. Makes possible
  coverage for Skylark JVM rules.
• Make proguard_apply_dictionary also apply to class and package
  obfuscation, not just class members.
• android_binary.nocompress_extensions now applies to all files in
  the APK, not just resources and assets.
• The apple_genrule rule that is distributed with Bazel has been
  deleted. Users who wish to use genrules with Xcode's
  DEVELOPER_DIR set should use the rules in
  https://github.com/bazelbuild/rules_apple instead.
• The swift_library rule that is distributed with Bazel has been
  deleted. Users who wish to compile Swift should use the rules in
  https://github.com/bazelbuild/rules_apple instead.
• The Build Event Protocol's File.uri field is now properly
  encoded according to RFC2396.
• Deprecated: Using the android_library.deps attribute to
  implicitly export targets to dependent rules. If your code is
  using this feature, Bazel will raise a warning. To fix, please
  use android_library.exports to explicitly specify exported
  targets. Run with
  --experimental_allow_android_library_deps_without_srcs=false to
  ensure forward compatibility when this feature is removed in a
  future release.
• java_common.create_provider is now supported with creating ijars
  by default. This introduces incompatibilities for existing users.
  Please set use_ijar=False if you don't want to use ijars.
• Tests can now write files to TEST_UNDECLARED_OUTPUTS_DIR and
  TEST_UNDECLARED_OUTPUTS_ANNOTATIONS_DIR and these will be
  reflected under bazel-testlogs.
• remove unused --host_incremental_dexing flag
• Stop using --undefined dynamic_lookup in Apple links. Enables
  unresolved symbol errors.
• All test output files included for cached, uncached, and multiple
  attempt tests.
• Android rules no longer restrict the manifest file to be named
  "AndroidManifest.xml".
• Boolean flag values will now get normalized to 1 or 0 in
  canonicalize-flags output.
• added experimental --use_new_category_enum to the help command to
  output options grouped by the new type of category.
• Expose output jars and jdeps in java_common.provider, when
  available.
• android_library targets are no longer allowed to use deps to
  export targets implicitly; please use android_library.exports
  instead.
• New depset API
• apple_binary and apple_static_library no longer support
  compilation attributes such as 'srcs'. If this breaks any
  existing targets, you may migrate all such attributes to a new
  objc_library target and depend on that objc_library target via
  the 'deps' attribute of apple_binary or apple_static_library.

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