build_tools/bazel/iree.bazelrc - 3p/openxla/iree - Git at Google


            
            # Copyright 2019 Google LLC

            
            #

            
            # Licensed under the Apache License, Version 2.0 (the "License");

            
            # you may not use this file except in compliance with the License.

            
            # You may obtain a copy of the License at

            
            #

            
            #      https://www.apache.org/licenses/LICENSE-2.0

            
            #

            
            # Unless required by applicable law or agreed to in writing, software

            
            # distributed under the License is distributed on an "AS IS" BASIS,

            
            # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

            
            # See the License for the specific language governing permissions and

            
            # limitations under the License.


            ###############################################################################

            
            # Common flags that apply to all configurations.

            
            # Use sparingly for things common to all compilers and platforms.

            
            ###############################################################################

            
            # Prevent invalid caching if input files are modified during a build.

            
            build --experimental_guard_against_concurrent_changes

            
            # Default to optimized builds

            
            # Override via: "-c dbg" or --compilation_mode=dbg

            
            build --compilation_mode=opt

            
            # Used in TensorFlow, so we have to enable it here as well.

            
            common --experimental_repo_remote_exec

            
            # Actually printing output on errors is... a useful default

            
            test --test_output=errors


            # Includes a startup option, so we can't put this in a config, but it doesn't

            
            # hurt anything on non-windows platforms.

            
            # Enables unix-style runfiles link trees on Windows. Requires enabling symlink

            
            # permissions: Enable Developer Mode in the Developer Settings page of the

            
            # system settings. See

            
            # https://docs.bazel.build/versions/master/windows.html#enable-symlink-support

            
            # and https://blogs.windows.com/windowsdeveloper/2016/12/02/symlinks-windows-10/

            
            startup --windows_enable_symlinks

            
            build --enable_runfiles


            # TODO: Transition to the explicit init_py mechanism. See #2405

            
            # This is commented out while considering transition path but left as a

            
            # breadcrumb.

            
            # build --incompatible_default_to_explicit_init_py


            ###############################################################################

            
            # Options for "generic_gcc" builds

            
            ###############################################################################


            # C++14 standard version is required.

            
            build:generic_gcc --cxxopt=-std=c++14 --host_cxxopt=-std=c++14


            # Default to adding back asserts in optimized builds.

            
            # This is a good compromise between runtime and debugability.

            
            build:generic_gcc --copt=-UNDEBUG


            # Disable warnings we don't care about or that generally have a low signal/noise

            
            # ratio.

            
            build:generic_gcc --copt=-Wno-unused-but-set-parameter

            
            build:generic_gcc --copt=-Wno-comment

            
            build:generic_gcc --copt=-Wno-attributes


            ###############################################################################

            
            # Options for "generic_clang" builds: these options should generally apply to

            
            # either clang or gcc and are curated based on need.

            
            ###############################################################################


            # C++14 standard version is required.

            
            build:generic_clang --cxxopt=-std=c++14 --host_cxxopt=-std=c++14


            # Default to adding back asserts in optimized builds.

            
            # This is a good compromise between runtime and debugability.

            
            build:generic_clang --copt=-UNDEBUG


            # Treat warnings as errors...

            
            build:generic_clang --copt=-Werror --host_copt=-Werror

            
            # ...and silence them outside of the workspace.

            
            build:generic_clang --per_file_copt=external/.*@-w

            
            # ...and silence them on host builds. There is no host_per_file_copt and

            
            # everything we build in the host configuration we either also build in the

            
            # target configuration or is external, so we can't control it.

            
            # If/when Bazel supports --host_per_file_copt, we could use that instead:

            
            # https://github.com/bazelbuild/bazel/issues/12406.

            
            # Would need to then make all the --copt below duplicated with --host_copt.

            
            build:generic_clang --host_copt=-w


            # LINT.IfChange(clang_diagnostics)

            
            # Set clang diagnostics. These largely match the set of warnings used within

            
            # Google. They have not been audited super carefully by the IREE team but are

            
            # generally thought to be a good set and consistency with those used internally

            
            # is very useful when importing. If you feel that some of these should be

            
            # different, please raise an issue!


            build:generic_clang --copt=-Wall


            # Disable warnings we don't care about or that generally have a low signal/noise

            
            # ratio.

            
            build:generic_clang --copt=-Wno-ambiguous-member-template

            
            build:generic_clang --copt=-Wno-char-subscripts

            
            build:generic_clang --copt=-Wno-error=deprecated-declarations

            
            build:generic_clang --copt=-Wno-extern-c-compat # Matches upstream. Cannot impact due to extern C inclusion method.

            
            build:generic_clang --copt=-Wno-gnu-alignof-expression

            
            build:generic_clang --copt=-Wno-gnu-variable-sized-type-not-at-end

            
            build:generic_clang --copt=-Wno-ignored-optimization-argument

            
            build:generic_clang --copt=-Wno-invalid-offsetof # Technically UB but needed for intrusive ptrs

            
            build:generic_clang --copt=-Wno-invalid-source-encoding

            
            build:generic_clang --copt=-Wno-mismatched-tags

            
            build:generic_clang --copt=-Wno-pointer-sign

            
            build:generic_clang --copt=-Wno-reserved-user-defined-literal

            
            build:generic_clang --copt=-Wno-return-type-c-linkage

            
            build:generic_clang --copt=-Wno-self-assign-overloaded

            
            build:generic_clang --copt=-Wno-sign-compare

            
            build:generic_clang --copt=-Wno-signed-unsigned-wchar

            
            build:generic_clang --copt=-Wno-strict-overflow

            
            build:generic_clang --copt=-Wno-trigraphs

            
            build:generic_clang --copt=-Wno-unknown-pragmas

            
            build:generic_clang --copt=-Wno-unknown-warning-option

            
            build:generic_clang --copt=-Wno-unused-command-line-argument

            
            build:generic_clang --copt=-Wno-unused-const-variable

            
            build:generic_clang --copt=-Wno-unused-function

            
            build:generic_clang --copt=-Wno-unused-local-typedef

            
            build:generic_clang --copt=-Wno-unused-private-field

            
            build:generic_clang --copt=-Wno-user-defined-warnings


            # Explicitly enable some additional warnings.

            
            # Some of these aren't on by default, or under -Wall, or are subsets of warnings

            
            # turned off above.

            
            build:generic_clang --copt=-Wctad-maybe-unsupported

            
            build:generic_clang --copt=-Wfloat-overflow-conversion

            
            build:generic_clang --copt=-Wfloat-zero-conversion

            
            build:generic_clang --copt=-Wfor-loop-analysis

            
            build:generic_clang --copt=-Wformat-security

            
            build:generic_clang --copt=-Wgnu-redeclared-enum

            
            build:generic_clang --copt=-Wimplicit-fallthrough

            
            build:generic_clang --copt=-Winfinite-recursion

            
            build:generic_clang --copt=-Wliteral-conversion

            
            build:generic_clang --copt=-Wnon-virtual-dtor

            
            build:generic_clang --copt=-Woverloaded-virtual

            
            build:generic_clang --copt=-Wself-assign

            
            build:generic_clang --copt=-Wstring-conversion

            
            build:generic_clang --copt=-Wtautological-overlap-compare

            
            build:generic_clang --copt=-Wthread-safety

            
            build:generic_clang --copt=-Wthread-safety-beta

            
            build:generic_clang --copt=-Wunused-comparison

            
            build:generic_clang --copt=-Wno-unused-variable

            
            build:generic_clang --copt=-Wvla

            
            # LINT.ThenChange(https://github.com/google/iree/tree/main/build_tools/cmake/iree_copts.cmake:clang_diagnostics)


            ###############################################################################

            
            # Options for building with address sanitizer.

            
            # https://github.com/google/sanitizers/wiki/AddressSanitizer

            
            ###############################################################################


            # Turn on asan. Some toolchains make use of the asan feature and we'll directly

            
            # set the appropriate opts.

            
            build:asan --features=asan

            
            build:asan --copt=-fsanitize=address

            
            build:asan --linkopt=-fsanitize=address


            # Don't strip debug info

            
            build:asan --strip=never

            
            # Ignore settings of `linkopts = ["-static"]` which can screw up the sanitizer.

            
            # We don't use this in IREE (that's what linkstatic is for), but it could show

            
            # up in dependencies.

            
            build:asan --force_ignore_dash_static

            
            # asan tests tend to take longer, so increase the timeouts

            
            build:asan --test_timeout=120,600,1800,-1

            
            # Make the outputs easy to find

            
            build:asan --cc_output_directory_tag=asan

            
            # Get better stack traces

            
            build:asan --copt=-fno-omit-frame-pointer

            
            # This macro define is used by absl

            
            build:asan --copt=-DADDRESS_SANITIZER


            ###############################################################################

            
            # Architecture specific options

            
            ###############################################################################


            # Enable some default cpu flags for x86 optimization.

            
            build:x86opt --copt=-mavx2


            ###############################################################################

            
            # Configuration for building remotely using Remote Build Execution (RBE)

            
            # https://cloud.google.com/remote-build-execution/

            
            # Based on https://github.com/bazelbuild/bazel-toolchains/blob/master/bazelrc/bazel-1.0.0.bazelrc

            
            # Currently in development only usable by CI.

            
            ###############################################################################


            # Options for connecting to the IREE GCP remote build project. These are

            
            # repeated separately in each config to avoid warnings about configs being

            
            # expanded more than once.


            # Enable authentication. This will pick up application default credentials by

            
            # default. You can use --google_credentials=some_file.json to use a service

            
            # account credential instead.

            
            build:rbe --google_default_credentials=true

            
            # Point to the remote instance constructed in the iree-oss project

            
            build:rbe --remote_instance_name=projects/iree-oss/instances/default_instance


            # Depending on how many machines are in the remote execution instance, setting

            
            # this higher can make builds faster by allowing more jobs to run in parallel.

            
            # Setting it too high can result in jobs that timeout, however, while waiting

            
            # for a remote machine to execute them.

            
            # Our pool autoscales from 25 to 200 jobs

            
            build:rbe --jobs=150


            # Flags related to specifying the platform, toolchain and java properties.

            
            # These flags must be adapted to work with toolchain containers other than

            
            # rbe-ubuntu16-04

            
            # References to "rbe_default" matches rbe_autoconfig(name="rbe_default") in

            
            # WORKSPACE

            
            build:rbe --host_javabase=@rbe_default//java:jdk

            
            build:rbe --javabase=@rbe_default//java:jdk

            
            build:rbe --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_hostjdk8

            
            build:rbe --java_toolchain=@bazel_tools//tools/jdk:toolchain_hostjdk8

            
            build:rbe --crosstool_top=@rbe_default//cc:toolchain

            
            build:rbe --action_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1

            
            # Platform flags:

            
            # The toolchain container used for execution is defined in the target indicated

            
            # by "extra_execution_platforms", "host_platform" and "platforms".

            
            # More about platforms: https://docs.bazel.build/versions/master/platforms.html

            
            build:rbe --extra_toolchains=@rbe_default//config:cc-toolchain

            
            build:rbe --extra_execution_platforms=@rbe_default//config:platform

            
            build:rbe --host_platform=@rbe_default//config:platform

            
            build:rbe --platforms=@rbe_default//config:platform


            build:rbe --define=EXECUTOR=remote


            # Enable remote execution so actions are performed on the remote systems.

            
            build:rbe --remote_executor=grpcs://remotebuildexecution.googleapis.com


            # Enforce stricter environment rules, which eliminates some non-hermetic

            
            # behavior and therefore improves both the remote cache hit rate and the

            
            # correctness and repeatability of the build.

            
            build:rbe --incompatible_strict_action_env=true


            # Set a higher timeout value, just in case.

            
            build:rbe --remote_timeout=3600


            # Local disk cache is incompatible with remote execution (for obvious reasons).

            
            build:rbe --disk_cache=""


            ###############################################################################

            
            # Configuration for uploading build results to Result Store UI

            
            # https://cloud.google.com/remote-build-execution/docs/results-ui/getting-started-results-ui

            
            # Can be used either with or without --config=rbe.

            
            ###############################################################################


            # Options for connecting to the IREE GCP remote build project. These are

            
            # repeated separately in each config to avoid warnings about configs being

            
            # expanded more than once.


            # Enable authentication. This will pick up application default credentials by

            
            # default. You can use --google_credentials=some_file.json to use a service

            
            # account credential instead.

            
            build:rs --google_default_credentials=true

            
            # Point to the remote instance constructed in the iree-oss project

            
            build:rs --remote_instance_name=projects/iree-oss/instances/default_instance


            build:rs --bes_backend="buildeventservice.googleapis.com"

            
            build:rs --bes_results_url="https://source.cloud.google.com/results/invocations/"

            
            build:rs --project_id=iree-oss


            ###############################################################################

            
            # Windows specific flags for building with VC.

            
            ###############################################################################


            build:_msvc_base --define=iree_is_msvc=true


            # Disable warnings for dependencies. We don't control these.

            
            # absl forces /W3 in their copts, so we exclude them to avoid D9025

            
            build:_msvc_base --per_file_copt=+external,-com_google_absl@/w


            # Find the source of truth for these in iree_copts.cmake.

            
            build:_msvc_base --copt=/DWIN32_LEAN_AND_MEAN

            
            build:_msvc_base --copt=/DNOMINMAX

            
            build:_msvc_base --copt=/D_USE_MATH_DEFINES

            
            build:_msvc_base --copt=/D_CRT_SECURE_NO_WARNINGS

            
            build:_msvc_base --copt=/D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES

            
            build:_msvc_base --copt=/EHsc

            
            build:_msvc_base --copt=/bigobj


            build:_msvc_base --copt=/wd4200

            
            build:_msvc_base --copt=/wd4018

            
            build:_msvc_base --copt=/wd4146  # operator applied to unsigned type, result still unsigned

            
            build:_msvc_base --copt=/wd4244  # possible loss of data

            
            build:_msvc_base --copt=/wd4267  # initializing: possible loss of data

            
            build:_msvc_base --copt=/wd4005  # allow: macro redefinition

            
            build:_msvc_base --copt=/wd4065  # allow: switch statement contains 'default' but no 'case' labels

            
            build:_msvc_base --copt=/wd4141  # allow: inline used more than once

            
            build:_msvc_base --copt=/wd4624  # allow: destructor was implicitly defined as deleted

            
            build:_msvc_base --copt=/wd5105  # macro expansion producing 'defined' has undefined behavior


            # And some more explicit disables. For some reason the `/w` on external doesn't

            
            # work for these, maybe they come from headers?

            
            # new warning with the standards-compliant preprocessor. winbase itself is not standards-compliant

            
            build:_msvc_base --per_file_copt=mkl_dnn@/wd4551 # missing argument list

            
            build:_msvc_base --per_file_copt=mkl_dnn@/wd4068 # unknown pragma

            
            build:_msvc_base --per_file_copt=farmhash@/wd4319 # zero extending to T of greater size


            build:_msvc_base --linkopt=/IGNORE:4217 # mismatch import/export declspec

            
            build:_msvc_base --linkopt=/IGNORE:4001 # no object files


            # Flags to make tensorflow build.

            
            # Some of these are also of general use and fine to enable globally for windows.

            
            build:_msvc_base --copt=/arch:AVX

            
            # Host and target are the same in windows so don't waste time building both.

            
            build:_msvc_base --distinct_host_configuration=false

            
            # TensorFlow requires the "monolithic" build mode for now on Windows.

            
            build:_msvc_base --define framework_shared_object=false


            # Workaround WinGDI.h defining `ERROR`, which conflicts with logging macros.

            
            # Note that IREE and TensorFlow both `#undef ERROR` and define their own

            
            # separate logging constants with the same name, but IREE needs the Windows

            
            # "graphics device interface" (GDI) for certain GUI sample projects.

            
            build:_msvc_base --per_file_copt=tensorflow@-DNOGDI


            # Disables TensorFlow eigen bloat and reduces compile times.

            
            build:_msvc_base --define=override_eigen_strong_inline=true


            # Another TensorFlow flag from their config script.

            
            build:_msvc_base --define with_default_optimizations=true


            # Separate configs for different MSVC versions as we might want slightly different options.

            
            build:msvc2017 --config=_msvc_base

            
            build:msvc2019 --config=_msvc_base


            # TensorFlow builds depend on this flag, but it doesn't appear to work with

            
            # gmock in some of our unit tests, so only enable it for TensorFlow files.

            
            # MSVC (Windows): Standards-conformant preprocessor mode

            
            # See https://docs.microsoft.com/en-us/cpp/preprocessor/preprocessor-experimental-overview

            
            build:msvc2017 --per_file_copt=tensorflow@/experimental:preprocessor

            
            # It's also called different things in different MSVC versions and will spam the logs

            
            # if we use the old name with a newer msvc.

            
            build:msvc2019 --per_file_copt=tensorflow@/Zc:preprocessor


            # Assume the newer version and alias to --config=windows

            
            build:msvc --config=msvc2019

            
            build:windows --config=msvc


            ###############################################################################
	# Copyright 2019 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# https://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	###############################################################################
	# Common flags that apply to all configurations.
	# Use sparingly for things common to all compilers and platforms.
	###############################################################################
	# Prevent invalid caching if input files are modified during a build.
	build --experimental_guard_against_concurrent_changes
	# Default to optimized builds
	# Override via: "-c dbg" or --compilation_mode=dbg
	build --compilation_mode=opt
	# Used in TensorFlow, so we have to enable it here as well.
	common --experimental_repo_remote_exec
	# Actually printing output on errors is... a useful default
	test --test_output=errors

	# Includes a startup option, so we can't put this in a config, but it doesn't
	# hurt anything on non-windows platforms.
	# Enables unix-style runfiles link trees on Windows. Requires enabling symlink
	# permissions: Enable Developer Mode in the Developer Settings page of the
	# system settings. See
	# https://docs.bazel.build/versions/master/windows.html#enable-symlink-support
	# and https://blogs.windows.com/windowsdeveloper/2016/12/02/symlinks-windows-10/
	startup --windows_enable_symlinks
	build --enable_runfiles


	# TODO: Transition to the explicit init_py mechanism. See #2405
	# This is commented out while considering transition path but left as a
	# breadcrumb.
	# build --incompatible_default_to_explicit_init_py

	###############################################################################
	# Options for "generic_gcc" builds
	###############################################################################

	# C++14 standard version is required.
	build:generic_gcc --cxxopt=-std=c++14 --host_cxxopt=-std=c++14

	# Default to adding back asserts in optimized builds.
	# This is a good compromise between runtime and debugability.
	build:generic_gcc --copt=-UNDEBUG

	# Disable warnings we don't care about or that generally have a low signal/noise
	# ratio.
	build:generic_gcc --copt=-Wno-unused-but-set-parameter
	build:generic_gcc --copt=-Wno-comment
	build:generic_gcc --copt=-Wno-attributes

	###############################################################################
	# Options for "generic_clang" builds: these options should generally apply to
	# either clang or gcc and are curated based on need.
	###############################################################################

	# C++14 standard version is required.
	build:generic_clang --cxxopt=-std=c++14 --host_cxxopt=-std=c++14

	# Default to adding back asserts in optimized builds.
	# This is a good compromise between runtime and debugability.
	build:generic_clang --copt=-UNDEBUG

	# Treat warnings as errors...
	build:generic_clang --copt=-Werror --host_copt=-Werror
	# ...and silence them outside of the workspace.
	build:generic_clang --per_file_copt=external/.*@-w
	# ...and silence them on host builds. There is no host_per_file_copt and
	# everything we build in the host configuration we either also build in the
	# target configuration or is external, so we can't control it.
	# If/when Bazel supports --host_per_file_copt, we could use that instead:
	# https://github.com/bazelbuild/bazel/issues/12406.
	# Would need to then make all the --copt below duplicated with --host_copt.
	build:generic_clang --host_copt=-w

	# LINT.IfChange(clang_diagnostics)
	# Set clang diagnostics. These largely match the set of warnings used within
	# Google. They have not been audited super carefully by the IREE team but are
	# generally thought to be a good set and consistency with those used internally
	# is very useful when importing. If you feel that some of these should be
	# different, please raise an issue!

	build:generic_clang --copt=-Wall

	# Disable warnings we don't care about or that generally have a low signal/noise
	# ratio.
	build:generic_clang --copt=-Wno-ambiguous-member-template
	build:generic_clang --copt=-Wno-char-subscripts
	build:generic_clang --copt=-Wno-error=deprecated-declarations
	build:generic_clang --copt=-Wno-extern-c-compat # Matches upstream. Cannot impact due to extern C inclusion method.
	build:generic_clang --copt=-Wno-gnu-alignof-expression
	build:generic_clang --copt=-Wno-gnu-variable-sized-type-not-at-end
	build:generic_clang --copt=-Wno-ignored-optimization-argument
	build:generic_clang --copt=-Wno-invalid-offsetof # Technically UB but needed for intrusive ptrs
	build:generic_clang --copt=-Wno-invalid-source-encoding
	build:generic_clang --copt=-Wno-mismatched-tags
	build:generic_clang --copt=-Wno-pointer-sign
	build:generic_clang --copt=-Wno-reserved-user-defined-literal
	build:generic_clang --copt=-Wno-return-type-c-linkage
	build:generic_clang --copt=-Wno-self-assign-overloaded
	build:generic_clang --copt=-Wno-sign-compare
	build:generic_clang --copt=-Wno-signed-unsigned-wchar
	build:generic_clang --copt=-Wno-strict-overflow
	build:generic_clang --copt=-Wno-trigraphs
	build:generic_clang --copt=-Wno-unknown-pragmas
	build:generic_clang --copt=-Wno-unknown-warning-option
	build:generic_clang --copt=-Wno-unused-command-line-argument
	build:generic_clang --copt=-Wno-unused-const-variable
	build:generic_clang --copt=-Wno-unused-function
	build:generic_clang --copt=-Wno-unused-local-typedef
	build:generic_clang --copt=-Wno-unused-private-field
	build:generic_clang --copt=-Wno-user-defined-warnings

	# Explicitly enable some additional warnings.
	# Some of these aren't on by default, or under -Wall, or are subsets of warnings
	# turned off above.
	build:generic_clang --copt=-Wctad-maybe-unsupported
	build:generic_clang --copt=-Wfloat-overflow-conversion
	build:generic_clang --copt=-Wfloat-zero-conversion
	build:generic_clang --copt=-Wfor-loop-analysis
	build:generic_clang --copt=-Wformat-security
	build:generic_clang --copt=-Wgnu-redeclared-enum
	build:generic_clang --copt=-Wimplicit-fallthrough
	build:generic_clang --copt=-Winfinite-recursion
	build:generic_clang --copt=-Wliteral-conversion
	build:generic_clang --copt=-Wnon-virtual-dtor
	build:generic_clang --copt=-Woverloaded-virtual
	build:generic_clang --copt=-Wself-assign
	build:generic_clang --copt=-Wstring-conversion
	build:generic_clang --copt=-Wtautological-overlap-compare
	build:generic_clang --copt=-Wthread-safety
	build:generic_clang --copt=-Wthread-safety-beta
	build:generic_clang --copt=-Wunused-comparison
	build:generic_clang --copt=-Wno-unused-variable
	build:generic_clang --copt=-Wvla
	# LINT.ThenChange(https://github.com/google/iree/tree/main/build_tools/cmake/iree_copts.cmake:clang_diagnostics)

	###############################################################################
	# Options for building with address sanitizer.
	# https://github.com/google/sanitizers/wiki/AddressSanitizer
	###############################################################################

	# Turn on asan. Some toolchains make use of the asan feature and we'll directly
	# set the appropriate opts.
	build:asan --features=asan
	build:asan --copt=-fsanitize=address
	build:asan --linkopt=-fsanitize=address

	# Don't strip debug info
	build:asan --strip=never
	# Ignore settings of `linkopts = ["-static"]` which can screw up the sanitizer.
	# We don't use this in IREE (that's what linkstatic is for), but it could show
	# up in dependencies.
	build:asan --force_ignore_dash_static
	# asan tests tend to take longer, so increase the timeouts
	build:asan --test_timeout=120,600,1800,-1
	# Make the outputs easy to find
	build:asan --cc_output_directory_tag=asan
	# Get better stack traces
	build:asan --copt=-fno-omit-frame-pointer
	# This macro define is used by absl
	build:asan --copt=-DADDRESS_SANITIZER

	###############################################################################
	# Architecture specific options
	###############################################################################

	# Enable some default cpu flags for x86 optimization.
	build:x86opt --copt=-mavx2

	###############################################################################
	# Configuration for building remotely using Remote Build Execution (RBE)
	# https://cloud.google.com/remote-build-execution/
	# Based on https://github.com/bazelbuild/bazel-toolchains/blob/master/bazelrc/bazel-1.0.0.bazelrc
	# Currently in development only usable by CI.
	###############################################################################

	# Options for connecting to the IREE GCP remote build project. These are
	# repeated separately in each config to avoid warnings about configs being
	# expanded more than once.

	# Enable authentication. This will pick up application default credentials by
	# default. You can use --google_credentials=some_file.json to use a service
	# account credential instead.
	build:rbe --google_default_credentials=true
	# Point to the remote instance constructed in the iree-oss project
	build:rbe --remote_instance_name=projects/iree-oss/instances/default_instance

	# Depending on how many machines are in the remote execution instance, setting
	# this higher can make builds faster by allowing more jobs to run in parallel.
	# Setting it too high can result in jobs that timeout, however, while waiting
	# for a remote machine to execute them.
	# Our pool autoscales from 25 to 200 jobs
	build:rbe --jobs=150

	# Flags related to specifying the platform, toolchain and java properties.
	# These flags must be adapted to work with toolchain containers other than
	# rbe-ubuntu16-04
	# References to "rbe_default" matches rbe_autoconfig(name="rbe_default") in
	# WORKSPACE
	build:rbe --host_javabase=@rbe_default//java:jdk
	build:rbe --javabase=@rbe_default//java:jdk
	build:rbe --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_hostjdk8
	build:rbe --java_toolchain=@bazel_tools//tools/jdk:toolchain_hostjdk8
	build:rbe --crosstool_top=@rbe_default//cc:toolchain
	build:rbe --action_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
	# Platform flags:
	# The toolchain container used for execution is defined in the target indicated
	# by "extra_execution_platforms", "host_platform" and "platforms".
	# More about platforms: https://docs.bazel.build/versions/master/platforms.html
	build:rbe --extra_toolchains=@rbe_default//config:cc-toolchain
	build:rbe --extra_execution_platforms=@rbe_default//config:platform
	build:rbe --host_platform=@rbe_default//config:platform
	build:rbe --platforms=@rbe_default//config:platform

	build:rbe --define=EXECUTOR=remote

	# Enable remote execution so actions are performed on the remote systems.
	build:rbe --remote_executor=grpcs://remotebuildexecution.googleapis.com

	# Enforce stricter environment rules, which eliminates some non-hermetic
	# behavior and therefore improves both the remote cache hit rate and the
	# correctness and repeatability of the build.
	build:rbe --incompatible_strict_action_env=true

	# Set a higher timeout value, just in case.
	build:rbe --remote_timeout=3600

	# Local disk cache is incompatible with remote execution (for obvious reasons).
	build:rbe --disk_cache=""

	###############################################################################
	# Configuration for uploading build results to Result Store UI
	# https://cloud.google.com/remote-build-execution/docs/results-ui/getting-started-results-ui
	# Can be used either with or without --config=rbe.
	###############################################################################

	# Options for connecting to the IREE GCP remote build project. These are
	# repeated separately in each config to avoid warnings about configs being
	# expanded more than once.

	# Enable authentication. This will pick up application default credentials by
	# default. You can use --google_credentials=some_file.json to use a service
	# account credential instead.
	build:rs --google_default_credentials=true
	# Point to the remote instance constructed in the iree-oss project
	build:rs --remote_instance_name=projects/iree-oss/instances/default_instance

	build:rs --bes_backend="buildeventservice.googleapis.com"
	build:rs --bes_results_url="https://source.cloud.google.com/results/invocations/"
	build:rs --project_id=iree-oss

	###############################################################################
	# Windows specific flags for building with VC.
	###############################################################################

	build:_msvc_base --define=iree_is_msvc=true

	# Disable warnings for dependencies. We don't control these.
	# absl forces /W3 in their copts, so we exclude them to avoid D9025
	build:_msvc_base --per_file_copt=+external,-com_google_absl@/w

	# Find the source of truth for these in iree_copts.cmake.
	build:_msvc_base --copt=/DWIN32_LEAN_AND_MEAN
	build:_msvc_base --copt=/DNOMINMAX
	build:_msvc_base --copt=/D_USE_MATH_DEFINES
	build:_msvc_base --copt=/D_CRT_SECURE_NO_WARNINGS
	build:_msvc_base --copt=/D_CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES
	build:_msvc_base --copt=/EHsc
	build:_msvc_base --copt=/bigobj

	build:_msvc_base --copt=/wd4200
	build:_msvc_base --copt=/wd4018
	build:_msvc_base --copt=/wd4146 # operator applied to unsigned type, result still unsigned
	build:_msvc_base --copt=/wd4244 # possible loss of data
	build:_msvc_base --copt=/wd4267 # initializing: possible loss of data
	build:_msvc_base --copt=/wd4005 # allow: macro redefinition
	build:_msvc_base --copt=/wd4065 # allow: switch statement contains 'default' but no 'case' labels
	build:_msvc_base --copt=/wd4141 # allow: inline used more than once
	build:_msvc_base --copt=/wd4624 # allow: destructor was implicitly defined as deleted
	build:_msvc_base --copt=/wd5105 # macro expansion producing 'defined' has undefined behavior

	# And some more explicit disables. For some reason the `/w` on external doesn't
	# work for these, maybe they come from headers?
	# new warning with the standards-compliant preprocessor. winbase itself is not standards-compliant
	build:_msvc_base --per_file_copt=mkl_dnn@/wd4551 # missing argument list
	build:_msvc_base --per_file_copt=mkl_dnn@/wd4068 # unknown pragma
	build:_msvc_base --per_file_copt=farmhash@/wd4319 # zero extending to T of greater size

	build:_msvc_base --linkopt=/IGNORE:4217 # mismatch import/export declspec
	build:_msvc_base --linkopt=/IGNORE:4001 # no object files

	# Flags to make tensorflow build.
	# Some of these are also of general use and fine to enable globally for windows.
	build:_msvc_base --copt=/arch:AVX
	# Host and target are the same in windows so don't waste time building both.
	build:_msvc_base --distinct_host_configuration=false
	# TensorFlow requires the "monolithic" build mode for now on Windows.
	build:_msvc_base --define framework_shared_object=false

	# Workaround WinGDI.h defining `ERROR`, which conflicts with logging macros.
	# Note that IREE and TensorFlow both `#undef ERROR` and define their own
	# separate logging constants with the same name, but IREE needs the Windows
	# "graphics device interface" (GDI) for certain GUI sample projects.
	build:_msvc_base --per_file_copt=tensorflow@-DNOGDI

	# Disables TensorFlow eigen bloat and reduces compile times.
	build:_msvc_base --define=override_eigen_strong_inline=true

	# Another TensorFlow flag from their config script.
	build:_msvc_base --define with_default_optimizations=true

	# Separate configs for different MSVC versions as we might want slightly different options.
	build:msvc2017 --config=_msvc_base
	build:msvc2019 --config=_msvc_base

	# TensorFlow builds depend on this flag, but it doesn't appear to work with
	# gmock in some of our unit tests, so only enable it for TensorFlow files.
	# MSVC (Windows): Standards-conformant preprocessor mode
	# See https://docs.microsoft.com/en-us/cpp/preprocessor/preprocessor-experimental-overview
	build:msvc2017 --per_file_copt=tensorflow@/experimental:preprocessor
	# It's also called different things in different MSVC versions and will spam the logs
	# if we use the old name with a newer msvc.
	build:msvc2019 --per_file_copt=tensorflow@/Zc:preprocessor

	# Assume the newer version and alias to --config=windows
	build:msvc --config=msvc2019
	build:windows --config=msvc

	###############################################################################