Switch to Starlark for C++ rules. (#887)

BUILD.bazel

@@ -8,6 +8,8 @@ config_setting(
     visibility = [":__subpackages__"],
 )
 
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
 cc_library(
     name = "benchmark",
     srcs = glob(

WORKSPACE

@@ -3,7 +3,13 @@ workspace(name = "com_github_google_benchmark")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
-     name = "com_google_googletest",
-     urls = ["https://github.com/google/googletest/archive/3f0cf6b62ad1eb50d8736538363d3580dd640c3e.zip"],
-     strip_prefix = "googletest-3f0cf6b62ad1eb50d8736538363d3580dd640c3e",
+    name = "rules_cc",
+    strip_prefix = "rules_cc-a508235df92e71d537fcbae0c7c952ea6957a912",
+    urls = ["https://github.com/bazelbuild/rules_cc/archive/a508235df92e71d537fcbae0c7c952ea6957a912.zip"],
+)
+
+http_archive(
+    name = "com_google_googletest",
+    strip_prefix = "googletest-3f0cf6b62ad1eb50d8736538363d3580dd640c3e",
+    urls = ["https://github.com/google/googletest/archive/3f0cf6b62ad1eb50d8736538363d3580dd640c3e.zip"],
 )

test/BUILD

@@ -5,7 +5,7 @@ TEST_COPTS = [
     "-Wall",
     "-Wextra",
     "-Wshadow",
-#    "-Wshorten-64-to-32",
+    #    "-Wshorten-64-to-32",
     "-Wfloat-equal",
     "-fstrict-aliasing",
 ]
@@ -16,13 +16,14 @@ PER_SRC_COPTS = ({
     "donotoptimize_test.cc": ["-O3"],
 })
 
-
 TEST_ARGS = ["--benchmark_min_time=0.01"]
 
 PER_SRC_TEST_ARGS = ({
     "user_counters_tabular_test.cc": ["--benchmark_counters_tabular=true"],
 })
 
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
+
 cc_library(
     name = "output_test_helper",
     testonly = 1,
@@ -36,24 +37,31 @@ cc_library(
 )
 
 [
-  cc_test(
-    name = test_src[:-len(".cc")],
-    size = "small",
-    srcs = [test_src],
-    args = TEST_ARGS + PER_SRC_TEST_ARGS.get(test_src, []),
-    copts = TEST_COPTS + PER_SRC_COPTS.get(test_src, []),
-    deps = [
-        ":output_test_helper",
-        "//:benchmark",
-        "//:benchmark_internal_headers",
-        "@com_google_googletest//:gtest",
-    ] + (
-        ["@com_google_googletest//:gtest_main"] if (test_src[-len("gtest.cc"):] == "gtest.cc") else []
-    ),
-  # FIXME: Add support for assembly tests to bazel.
-  # See Issue #556
-  # https://github.com/google/benchmark/issues/556
-  ) for test_src in glob(["*test.cc"], exclude = ["*_assembly_test.cc", "link_main_test.cc"])
+    cc_test(
+        name = test_src[:-len(".cc")],
+        size = "small",
+        srcs = [test_src],
+        args = TEST_ARGS + PER_SRC_TEST_ARGS.get(test_src, []),
+        copts = TEST_COPTS + PER_SRC_COPTS.get(test_src, []),
+        deps = [
+            ":output_test_helper",
+            "//:benchmark",
+            "//:benchmark_internal_headers",
+            "@com_google_googletest//:gtest",
+        ] + (
+            ["@com_google_googletest//:gtest_main"] if (test_src[-len("gtest.cc"):] == "gtest.cc") else []
+        ),
+        # FIXME: Add support for assembly tests to bazel.
+        # See Issue #556
+        # https://github.com/google/benchmark/issues/556
+    )
+    for test_src in glob(
+        ["*test.cc"],
+        exclude = [
+            "*_assembly_test.cc",
+            "link_main_test.cc",
+        ],
+    )
 ]
 
 cc_test(