.bazelrc - third_party/github/protocolbuffers/protobuf - Git at Google

 # TODO: ErrorProne's SelfAssertions are violated in protobuf's test
 build --javacopt=-Xep:SelfAssertion:WARN

 # Disable prebuilt protoc on CI. On both main and release branches,
 # PROTOBUF_VERSION ordinarily points to the next release, which doesn't
 # exist and therefore doesn't have a prebuilt yet.
 build --@com_google_protobuf//bazel/toolchains:prefer_prebuilt_protoc=false

 # This flag works around some issues with Rust linking.
 build --@rules_rust//rust/settings:experimental_use_cc_common_link=True

 # Build with all --incompatible flags that we can. This helps us prepare for
 # upcoming breaking changes in Bazel. This list was generated for Bazel 6 by
 # running bazelisk with the --migrate flag and filtering out all flags that
 # default to true or are deprecated.
 build --incompatible_check_sharding_support
 build --incompatible_config_setting_private_default_visibility
 build --incompatible_default_to_explicit_init_py
 build --incompatible_disable_native_android_rules
 build --incompatible_disable_starlark_host_transitions
 build --incompatible_disable_target_provider_fields
 build --incompatible_disallow_empty_glob
 build --incompatible_dont_use_javasourceinfoprovider
 build --incompatible_enable_android_toolchain_resolution
 build --incompatible_enable_apple_toolchain_resolution
 build --incompatible_exclusive_test_sandboxed
 build --incompatible_top_level_aspects_require_providers
 build --incompatible_use_cc_configure_from_rules_cc

 # For easier debugging of build failures.
 common --announce_rc
 build --verbose_failures

 # Important: this flag ensures that we remain compliant with the C++ layering
 # check.
 build --features=layering_check

 common --enable_platform_specific_config

 common --incompatible_check_testonly_for_output_files

 # Import Bazel 9 specific flags (such as --repo_contents_cache)
 # TODO: Remove it when --repo_contents_cache issue
 # has been resolved in bazel
 try-import-if-bazel-version >=9.0.0 %workspace%/bazel9.bazelrc

 # ==============================================================================
 # COMPILATION MODES & SANITIZERS
 # ==============================================================================
 build:dbg --compilation_mode=dbg
 build:opt --compilation_mode=opt

 build:san-common --config=dbg --strip=never --copt=-O1 --copt=-fno-omit-frame-pointer
 # TODO ASAN hits ODR violations with shared linkage due to
 # rules_proto / cc_proto_library cyclic dependency.
 build:san-common --dynamic_mode=off

 build:asan --config=san-common --copt=-fsanitize=address --linkopt=-fsanitize=address

 build:msan --config=san-common --copt=-fsanitize=memory --linkopt=-fsanitize=memory
 build:msan --copt=-fsanitize-memory-track-origins
 build:msan --copt=-fsanitize-memory-use-after-dtor
 build:msan --action_env=MSAN_OPTIONS=poison_in_dtor=1

 # Use our instrumented LLVM libc++ in GHA.
 build:docker-msan --config=msan
 build:docker-msan --linkopt=-L/opt/libcxx_msan/lib --linkopt=-lc++abi
 build:docker-msan --linkopt=-Wl,-rpath,/opt/libcxx_msan/lib
 build:docker-msan --cxxopt=-stdlib=libc++ --linkopt=-stdlib=libc++

 build:tsan --config=san-common --copt=-fsanitize=thread --linkopt=-fsanitize=thread

 build:ubsan --config=san-common --copt=-fsanitize=undefined --linkopt=-fsanitize=undefined
 build:ubsan --action_env=UBSAN_OPTIONS=halt_on_error=1:print_stacktrace=1
 # Workaround for the fact that Bazel links with $CC, not $CXX
 # https://github.com/bazelbuild/bazel/issues/11122#issuecomment-613746748
 build:ubsan --copt=-fno-sanitize=function --copt=-fno-sanitize=vptr
 # Abseil passes nullptr to memcmp with 0 size
 build:ubsan --copt=-fno-sanitize=nonnull-attribute


 # ==============================================================================
 # LINUX & macOS PLATFORM CONFIG
 # ==============================================================================
 build:clang --cxxopt=-std=c++17 --host_cxxopt=-std=c++17
 build:clang --cxxopt="-Woverloaded-virtual"
 build:clang --copt="-Wpointer-arith"
 build:clang --copt="-Werror" --copt="-Wno-sign-compare" --copt="-Wno-sign-conversion" --copt="-Wno-error=sign-conversion" --copt="-Wno-deprecated-declarations"

 # Suppress all compiler warnings in external dependencies
 build:clang --per_file_copt=external/.*@-w
 build:clang --host_per_file_copt=external/.*@-w

 build:linux --config=clang

 build:macos --config=clang
 common:macos --xcode_version_config=@com_google_protobuf//.github:host_xcodes

 build:macos --apple_crosstool_top=@local_config_apple_cc//:toolchain
 build:macos --crosstool_top=@local_config_apple_cc//:toolchain
 build:macos --host_crosstool_top=@local_config_apple_cc//:toolchain


 # ==============================================================================
 # WINDOWS PLATFORM CONFIG
 # ==============================================================================
 # Workaround for maximum path length issues
 build:windows --cxxopt=/std:c++17 --host_cxxopt=/std:c++17
 common:windows --enable_runfiles

 # Use clang-cl by default on Windows (see https://github.com/protocolbuffers/protobuf/issues/20085).
 build:windows --extra_toolchains=@local_config_cc//:cc-toolchain-x64_windows-clang-cl
 build:clang-cl --extra_execution_platforms=//build_defs:x64_windows-clang-cl --host_platform=//build_defs:x64_windows-clang-cl
 build:msvc-cl --extra_execution_platforms=//build_defs:x64_windows-msvc-cl --host_platform=//build_defs:x64_windows-msvc-cl
 build:windows --config=clang-cl
 # Set BAZEL_SH, this is needed for bazel 8.6.0 WORKSPACE on windows
 build:windows --action_env=BAZEL_SH="C:/Program Files/Git/bin/bash.exe"
	# TODO: ErrorProne's SelfAssertions are violated in protobuf's test
	build --javacopt=-Xep:SelfAssertion:WARN

	# Disable prebuilt protoc on CI. On both main and release branches,
	# PROTOBUF_VERSION ordinarily points to the next release, which doesn't
	# exist and therefore doesn't have a prebuilt yet.
	build --@com_google_protobuf//bazel/toolchains:prefer_prebuilt_protoc=false

	# This flag works around some issues with Rust linking.
	build --@rules_rust//rust/settings:experimental_use_cc_common_link=True

	# Build with all --incompatible flags that we can. This helps us prepare for
	# upcoming breaking changes in Bazel. This list was generated for Bazel 6 by
	# running bazelisk with the --migrate flag and filtering out all flags that
	# default to true or are deprecated.
	build --incompatible_check_sharding_support
	build --incompatible_config_setting_private_default_visibility
	build --incompatible_default_to_explicit_init_py
	build --incompatible_disable_native_android_rules
	build --incompatible_disable_starlark_host_transitions
	build --incompatible_disable_target_provider_fields
	build --incompatible_disallow_empty_glob
	build --incompatible_dont_use_javasourceinfoprovider
	build --incompatible_enable_android_toolchain_resolution
	build --incompatible_enable_apple_toolchain_resolution
	build --incompatible_exclusive_test_sandboxed
	build --incompatible_top_level_aspects_require_providers
	build --incompatible_use_cc_configure_from_rules_cc

	# For easier debugging of build failures.
	common --announce_rc
	build --verbose_failures

	# Important: this flag ensures that we remain compliant with the C++ layering
	# check.
	build --features=layering_check

	common --enable_platform_specific_config

	common --incompatible_check_testonly_for_output_files

	# Import Bazel 9 specific flags (such as --repo_contents_cache)
	# TODO: Remove it when --repo_contents_cache issue
	# has been resolved in bazel
	try-import-if-bazel-version >=9.0.0 %workspace%/bazel9.bazelrc

	# ==============================================================================
	# COMPILATION MODES & SANITIZERS
	# ==============================================================================
	build:dbg --compilation_mode=dbg
	build:opt --compilation_mode=opt

	build:san-common --config=dbg --strip=never --copt=-O1 --copt=-fno-omit-frame-pointer
	# TODO ASAN hits ODR violations with shared linkage due to
	# rules_proto / cc_proto_library cyclic dependency.
	build:san-common --dynamic_mode=off

	build:asan --config=san-common --copt=-fsanitize=address --linkopt=-fsanitize=address

	build:msan --config=san-common --copt=-fsanitize=memory --linkopt=-fsanitize=memory
	build:msan --copt=-fsanitize-memory-track-origins
	build:msan --copt=-fsanitize-memory-use-after-dtor
	build:msan --action_env=MSAN_OPTIONS=poison_in_dtor=1

	# Use our instrumented LLVM libc++ in GHA.
	build:docker-msan --config=msan
	build:docker-msan --linkopt=-L/opt/libcxx_msan/lib --linkopt=-lc++abi
	build:docker-msan --linkopt=-Wl,-rpath,/opt/libcxx_msan/lib
	build:docker-msan --cxxopt=-stdlib=libc++ --linkopt=-stdlib=libc++

	build:tsan --config=san-common --copt=-fsanitize=thread --linkopt=-fsanitize=thread

	build:ubsan --config=san-common --copt=-fsanitize=undefined --linkopt=-fsanitize=undefined
	build:ubsan --action_env=UBSAN_OPTIONS=halt_on_error=1:print_stacktrace=1
	# Workaround for the fact that Bazel links with $CC, not $CXX
	# https://github.com/bazelbuild/bazel/issues/11122#issuecomment-613746748
	build:ubsan --copt=-fno-sanitize=function --copt=-fno-sanitize=vptr
	# Abseil passes nullptr to memcmp with 0 size
	build:ubsan --copt=-fno-sanitize=nonnull-attribute


	# ==============================================================================
	# LINUX & macOS PLATFORM CONFIG
	# ==============================================================================
	build:clang --cxxopt=-std=c++17 --host_cxxopt=-std=c++17
	build:clang --cxxopt="-Woverloaded-virtual"
	build:clang --copt="-Wpointer-arith"
	build:clang --copt="-Werror" --copt="-Wno-sign-compare" --copt="-Wno-sign-conversion" --copt="-Wno-error=sign-conversion" --copt="-Wno-deprecated-declarations"

	# Suppress all compiler warnings in external dependencies
	build:clang --per_file_copt=external/.*@-w
	build:clang --host_per_file_copt=external/.*@-w

	build:linux --config=clang

	build:macos --config=clang
	common:macos --xcode_version_config=@com_google_protobuf//.github:host_xcodes

	build:macos --apple_crosstool_top=@local_config_apple_cc//:toolchain
	build:macos --crosstool_top=@local_config_apple_cc//:toolchain
	build:macos --host_crosstool_top=@local_config_apple_cc//:toolchain


	# ==============================================================================
	# WINDOWS PLATFORM CONFIG
	# ==============================================================================
	# Workaround for maximum path length issues
	build:windows --cxxopt=/std:c++17 --host_cxxopt=/std:c++17
	common:windows --enable_runfiles

	# Use clang-cl by default on Windows (see https://github.com/protocolbuffers/protobuf/issues/20085).
	build:windows --extra_toolchains=@local_config_cc//:cc-toolchain-x64_windows-clang-cl
	build:clang-cl --extra_execution_platforms=//build_defs:x64_windows-clang-cl --host_platform=//build_defs:x64_windows-clang-cl
	build:msvc-cl --extra_execution_platforms=//build_defs:x64_windows-msvc-cl --host_platform=//build_defs:x64_windows-msvc-cl
	build:windows --config=clang-cl
	# Set BAZEL_SH, this is needed for bazel 8.6.0 WORKSPACE on windows
	build:windows --action_env=BAZEL_SH="C:/Program Files/Git/bin/bash.exe"