Add 'third_party/abseil_cpp/' from commit '768eb2ca28'

git-subtree-dir: third_party/abseil_cpp
git-subtree-mainline: ffb2ae54be
git-subtree-split: 768eb2ca28

third_party/abseil_cpp/absl/BUILD.bazel

@@ -0,0 +1,60 @@
+#
+# Copyright 2017 The Abseil Authors.
+#
+# 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.
+#
+
+load(
+    ":compiler_config_setting.bzl",
+    "create_llvm_config",
+)
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # Apache 2.0
+
+create_llvm_config(
+    name = "llvm_compiler",
+    visibility = [":__subpackages__"],
+)
+
+config_setting(
+    name = "osx",
+    constraint_values = [
+        "@bazel_tools//platforms:osx",
+    ],
+)
+
+config_setting(
+    name = "ios",
+    constraint_values = [
+        "@bazel_tools//platforms:ios",
+    ],
+)
+
+config_setting(
+    name = "windows",
+    constraint_values = [
+        "@bazel_tools//platforms:x86_64",
+        "@bazel_tools//platforms:windows",
+    ],
+    visibility = [":__subpackages__"],
+)
+
+config_setting(
+    name = "ppc",
+    values = {
+        "cpu": "ppc",
+    },
+    visibility = [":__subpackages__"],
+)