Migrate the first macro usage to the toolchains repo.

PiperOrigin-RevId: 336670581
Change-Id: I7cf8f8d9b977ec59b97e7afcaeb5a94fd726d57e

tensorflow/core/BUILD

@@ -91,7 +91,7 @@ load("//tensorflow:tensorflow.bzl", "tf_gen_op_libs")
 load("//tensorflow:tensorflow.bzl", "if_nccl")
 
 # buildifier: disable=same-origin-load
-load("//tensorflow:tensorflow.bzl", "tensorflow_opensource_extra_deps")
+load("@tf_toolchains//macros:cpp.bzl", "tensorflow_opensource_extra_deps")
 
 # buildifier: disable=same-origin-load
 load("//tensorflow:tensorflow.bzl", "tf_cc_test_gpu")

tensorflow/opensource_only.files

@@ -204,6 +204,7 @@ tensorflow/third_party/tensorrt/build_defs.bzl.tpl
 tensorflow/third_party/tensorrt/tensorrt/include/tensorrt_config.h.tpl
 tensorflow/third_party/tensorrt/tensorrt_configure.bzl
 tensorflow/third_party/termcolor.BUILD
+tensorflow/third_party/tf_toolchains.BUILD
 tensorflow/third_party/tflite_mobilenet.BUILD
 tensorflow/third_party/tflite_mobilenet_float.BUILD
 tensorflow/third_party/tflite_mobilenet_quant.BUILD

tensorflow/workspace.bzl

@@ -1185,6 +1185,17 @@ def tf_repositories(path_prefix = "", tf_repo_name = ""):
         ],
     )
 
+    tf_http_archive(
+        name = "tf_toolchains",
+        sha256 = "eb175afa73e5a33d2b5d2aabcfde6c8c3395fd7001eb5ba765a5cd98cce714ba",
+        strip_prefix = "toolchains-0.0.2",
+        build_file = clean_dep("//third_party:tf_toolchains.BUILD"),
+        urls = [
+            "http://mirror.tensorflow.org/github.com/tensorflow/toolchains/archive/v0.0.2.tar.gz",
+            "https://github.com/tensorflow/toolchains/archive/v0.0.2.tar.gz",
+        ],
+    )
+
 def tf_bind():
     """Bind targets for some external repositories"""
     ##############################################################################

third_party/tf_toolchains.BUILD

@@ -0,0 +1 @@
+package(default_visibility = ["//visibility:public"])