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diff --git a/cc/defs.bzl b/cc/defs.bzl
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+# Copyright 2018 The Bazel Authors. All rights reserved.
+#
+# 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
+#
+#    http://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.
+
+"""Starlark rules for building C++ projects."""
+
+load("//cc/private/rules_impl:cc_flags_supplier.bzl", _cc_flags_supplier = "cc_flags_supplier")
+load("//cc/private/rules_impl:compiler_flag.bzl", _compiler_flag = "compiler_flag")
+load("//cc/private/rules_impl:native.bzl", "NativeCcInfo", "NativeCcToolchainConfigInfo", "NativeDebugPackageInfo", "native_cc_common")
+
+_MIGRATION_TAG = "__CC_RULES_MIGRATION_DO_NOT_USE_WILL_BREAK__"
+
+# TODO(bazel-team): To avoid breaking changes, if the below are no longer
+# forwarding to native rules, flag @bazel_tools@bazel_tools//tools/cpp:link_extra_libs
+# should either: (a) alias the flag @rules_cc//:link_extra_libs, or (b) be
+# added as a dependency to @rules_cc//:link_extra_lib. The intermediate library
+# @bazel_tools@bazel_tools//tools/cpp:link_extra_lib should either be added as a dependency
+# to @rules_cc//:link_extra_lib, or removed entirely (if possible).
+_LINK_EXTRA_LIB = "@rules_cc//:link_extra_lib"  # copybara-use-repo-external-label
+
+def _add_tags(attrs, is_binary = False):
+    if "tags" in attrs and attrs["tags"] != None:
+        attrs["tags"] = attrs["tags"] + [_MIGRATION_TAG]
+    else:
+        attrs["tags"] = [_MIGRATION_TAG]
+
+    if is_binary:
+        is_library = "linkshared" in attrs and attrs["linkshared"]
+
+        # Executable builds also include the "link_extra_lib" library.
+        if not is_library:
+            if "deps" in attrs and attrs["deps"] != None:
+                attrs["deps"] = attrs["deps"] + [_LINK_EXTRA_LIB]
+            else:
+                attrs["deps"] = [_LINK_EXTRA_LIB]
+
+    return attrs
+
+def cc_binary(**attrs):
+    """Bazel cc_binary rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_binary
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_binary(**_add_tags(attrs, True))
+
+def cc_test(**attrs):
+    """Bazel cc_test rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_test
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_test(**_add_tags(attrs, True))
+
+def cc_library(**attrs):
+    """Bazel cc_library rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_library
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_library(**_add_tags(attrs))
+
+def cc_import(**attrs):
+    """Bazel cc_import rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_import
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_import(**_add_tags(attrs))
+
+def cc_proto_library(**attrs):
+    """Bazel cc_proto_library rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_proto_library
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_proto_library(**_add_tags(attrs))
+
+def fdo_prefetch_hints(**attrs):
+    """Bazel fdo_prefetch_hints rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#fdo_prefetch_hints
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.fdo_prefetch_hints(**_add_tags(attrs))
+
+def fdo_profile(**attrs):
+    """Bazel fdo_profile rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#fdo_profile
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.fdo_profile(**_add_tags(attrs))
+
+def cc_toolchain(**attrs):
+    """Bazel cc_toolchain rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_toolchain
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_toolchain(**_add_tags(attrs))
+
+def cc_toolchain_suite(**attrs):
+    """Bazel cc_toolchain_suite rule.
+
+    https://docs.bazel.build/versions/main/be/c-cpp.html#cc_toolchain_suite
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.cc_toolchain_suite(**_add_tags(attrs))
+
+def objc_library(**attrs):
+    """Bazel objc_library rule.
+
+    https://docs.bazel.build/versions/main/be/objective-c.html#objc_library
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.objc_library(**_add_tags(attrs))
+
+def objc_import(**attrs):
+    """Bazel objc_import rule.
+
+    https://docs.bazel.build/versions/main/be/objective-c.html#objc_import
+
+    Args:
+      **attrs: Rule attributes
+    """
+
+    # buildifier: disable=native-cc
+    native.objc_import(**_add_tags(attrs))
+
+def cc_flags_supplier(**attrs):
+    """Bazel cc_flags_supplier rule.
+
+    Args:
+      **attrs: Rule attributes
+    """
+    _cc_flags_supplier(**_add_tags(attrs))
+
+def compiler_flag(**attrs):
+    """Bazel compiler_flag rule.
+
+    Args:
+      **attrs: Rule attributes
+    """
+    _compiler_flag(**_add_tags(attrs))
+
+cc_common = native_cc_common
+
+CcInfo = NativeCcInfo
+
+CcToolchainConfigInfo = NativeCcToolchainConfigInfo
+
+DebugPackageInfo = NativeDebugPackageInfo