Refactor Bazel build files and remove unused submodules

.bazelrc

@@ -0,0 +1,3 @@
+common --enable_bzlmod
+build --cxxopt='-std=c++17'
+build:windows --cxxopt='/std:c++17'

.bazelversion

@@ -0,0 +1 @@
+7.6.1

.gitignore

@@ -16,6 +16,7 @@ build-*/
 
 # Bazel artifacts
 **/bazel-*
+MODULE.bazel.lock
 
 # Emacs autosaves
 *~

BUILD

@@ -1,9 +1,9 @@
 # Ruy is not BLAS
 
-load("//tools/build_defs/license:license.bzl", "license")
+load("@rules_license//rules:license.bzl", "license")
 
 package(
-    default_applicable_licenses = ["//third_party/ruy:license"],
+    default_applicable_licenses = ["@com_google_ruy//:license"],
     licenses = ["notice"],  # Apache 2.0
 )
 

MODULE.bazel

@@ -0,0 +1,31 @@
+# Copyright 2020 Google LLC
+#
+# 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.
+
+module(
+    name = "ruy",
+    version = "",
+    repo_name = "com_google_ruy",
+)
+
+# -- bazel_dep definitions -- #
+bazel_dep(name = "bazel_skylib", version = "1.8.1")
+bazel_dep(name = "cpuinfo", version = "0.0.0-20240417-3c8b153")
+bazel_dep(name = "googletest", version = "1.17.0", repo_name = "com_google_googletest")
+bazel_dep(name = "platforms", version = "1.0.0")
+bazel_dep(name = "rules_cc", version = "0.2.2")
+bazel_dep(name = "rules_license", version = "1.0.0")
+
+# -- use_repo_rule statements -- #
+
+# -- repo definitions -- #

WORKSPACE

@@ -19,26 +19,56 @@ workspace(name = "com_google_ruy")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
 
-maybe(
-    local_repository,
-    name = "com_google_googletest",
-    path = "third_party/googletest",
+http_archive(
+    name = "bazel_features",
+    sha256 = "06a9691becc357c1e4af011b9fb3239097503ce00607d9eb6b11ea0fac304039",
+    strip_prefix = "bazel_features-1.35.0",
+    url = "https://github.com/bazel-contrib/bazel_features/releases/download/v1.35.0/bazel_features-v1.35.0.tar.gz",
 )
 
-maybe(
-    new_local_repository,
-    name = "cpuinfo",
-    path = "third_party/cpuinfo",
-    build_file = "@//third_party:cpuinfo.BUILD",
-)
+load("@bazel_features//:deps.bzl", "bazel_features_deps")
+
+bazel_features_deps()
 
 # skylib utility for additional bazel functionality.
-skylib_version = "0.9.0"
 http_archive(
     name = "bazel_skylib",
-    type = "tar.gz",
-    url = "https://github.com/bazelbuild/bazel-skylib/releases/download/{}/bazel_skylib-{}.tar.gz".format (skylib_version, skylib_version),
-    sha256 = "1dde365491125a3db70731e25658dfdd3bc5dbdfd11b840b3e987ecf043c7ca0",
+    sha256 = "51b5105a760b353773f904d2bbc5e664d0987fbaf22265164de65d43e910d8ac",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.8.1/bazel-skylib-1.8.1.tar.gz",
+        "https://github.com/bazelbuild/bazel-skylib/releases/download/1.8.1/bazel-skylib-1.8.1.tar.gz",
+    ],
 )
+
+load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
+
+bazel_skylib_workspace()
+
 load("@bazel_skylib//lib:versions.bzl", "versions")
+
 versions.check(minimum_bazel_version = "2.0.0")
+
+http_archive(
+    name = "rules_cc",
+    sha256 = "e50f24506011841e2ac83d9733a0c7e058eb3a10a6e3e10baa9c7942ff5f4767",
+    strip_prefix = "rules_cc-0.2.2",
+    url = "https://github.com/bazelbuild/rules_cc/releases/download/0.2.2/rules_cc-0.2.2.tar.gz",
+)
+
+load("@rules_cc//cc:extensions.bzl", "compatibility_proxy_repo")
+
+compatibility_proxy_repo()
+
+http_archive(
+    name = "com_google_googletest",
+    sha256 = "65fab701d9829d38cb77c14acdc431d2108bfdbf8979e40eb8ae567edf10b27c",
+    strip_prefix = "googletest-1.17.0",
+    url = "https://github.com/google/googletest/releases/download/v1.17.0/googletest-1.17.0.tar.gz",
+)
+
+http_archive(
+    name = "cpuinfo",
+    sha256 = "87fc79472eb30b734cbe700dfe3edc0bdb96c33e3ce44e48ab327bbd8783f07f",
+    strip_prefix = "cpuinfo-3c8b1533ac03dd6531ab6e7b9245d488f13a82a5",
+    url = "https://github.com/pytorch/cpuinfo/archive/3c8b1533ac03dd6531ab6e7b9245d488f13a82a5.tar.gz",
+)

WORKSPACE.bzlmod

@@ -0,0 +1,17 @@
+# Copyright 2020 Google LLC
+#
+# 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.
+
+# Workspace file for the Ruy project.
+
+workspace(name = "com_google_ruy")

example/BUILD

@@ -1,7 +1,7 @@
-load("//third_party/bazel_rules/rules_cc/cc:cc_binary.bzl", "cc_binary")
+load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
 
 package(
-    default_applicable_licenses = ["//third_party/ruy:license"],
+    default_applicable_licenses = ["@com_google_ruy//:license"],
     licenses = ["notice"],  # Apache 2.0
 )
 

ruy/BUILD

@@ -2,15 +2,15 @@
 
 load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
 load("@bazel_skylib//lib:selects.bzl", "selects")
-load("//third_party/bazel_rules/rules_cc/cc:cc_library.bzl", "cc_library")
-load("//third_party/bazel_rules/rules_cc/cc:cc_test.bzl", "cc_test")
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+load("@rules_cc//cc:cc_test.bzl", "cc_test")
 load(":build_defs.bzl", "ruy_copts", "ruy_copts_avx", "ruy_copts_avx2_fma", "ruy_copts_avx512")
 load(":build_defs.oss.bzl", "ruy_linkopts_thread_standard_library")
 load(":ruy_test.bzl", "ruy_benchmark", "ruy_test")
 load(":ruy_test_ext.oss.bzl", "ruy_test_ext_defines", "ruy_test_ext_deps")
 
 package(
-    default_applicable_licenses = ["//third_party/ruy:license"],
+    default_applicable_licenses = ["@com_google_ruy//:license"],
     licenses = ["notice"],  # Apache 2.0
 )
 
@@ -34,10 +34,8 @@ config_setting(
     name = "windows_msvc",
     constraint_values = [
         "@platforms//os:windows",
+        "@bazel_tools//tools/cpp:msvc",
     ],
-    flag_values = {
-        "//tools/cpp:compiler": "msvc",
-    },
 )
 
 config_setting(

ruy/build_defs.bzl

@@ -4,7 +4,7 @@
 # Returns warnings flags to use for all ruy code.
 def ruy_copts_warnings():
     return select({
-        "//tools/cc_target_os:windows": [
+        "@platforms//os:windows": [
             # We run into trouble on Windows toolchains with warning flags,
             # as mentioned in the comments below on each flag.
             # We could be more aggressive in enabling supported warnings on each

ruy/build_defs.oss.bzl

@@ -10,6 +10,6 @@ def ruy_linkopts_thread_standard_library():
     # with Bazel. Instead we do the following, which is copied from
     # https://github.com/abseil/abseil-cpp/blob/1112609635037a32435de7aa70a9188dcb591458/absl/base/BUILD.bazel#L155
     return select({
-        "//tools/cc_target_os:windows": [],
+        "@platforms//os:windows": [],
         "//conditions:default": ["-pthread"],
     })

ruy/pack_arm.h

@@ -489,8 +489,7 @@ struct PackImpl<Path::kNeon, FixedKernelLayout<Order::kRowMajor, 1, 4>, float,
   }
 };
 #endif  // (RUY_PLATFORM_NEON_32)
-#endif  // (RUY_PLATFORM_NEON_64 || RUY_PLATFORM_NEON_32) && \
-        // RUY_OPT(ASM)
+#endif  // (RUY_PLATFORM_NEON_64 || RUY_PLATFORM_NEON_32) && RUY_OPT(ASM)
 
 #if RUY_PLATFORM_NEON_64 && RUY_OPT(ASM)
 

ruy/profiler/BUILD

@@ -1,11 +1,11 @@
 # A minimalistic profiler sampling pseudo-stacks
 
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+load("@rules_cc//cc:cc_test.bzl", "cc_test")
 load("//ruy:build_defs.oss.bzl", "ruy_linkopts_thread_standard_library")
-load("//third_party/bazel_rules/rules_cc/cc:cc_library.bzl", "cc_library")
-load("//third_party/bazel_rules/rules_cc/cc:cc_test.bzl", "cc_test")
 
 package(
-    default_applicable_licenses = ["//third_party/ruy:license"],
+    default_applicable_licenses = ["@com_google_ruy//:license"],
     licenses = ["notice"],  # Apache 2.0
 )
 

ruy/ruy_test.bzl

@@ -1,8 +1,8 @@
 # Provides the ruy_test macro for type-parametrized tests.
 """ruy_test is a macro for building a test with multiple paths corresponding to tuples of types for LHS, RHS, accumulator and destination."""
 
-load("//third_party/bazel_rules/rules_cc/cc:cc_binary.bzl", "cc_binary")
-load("//third_party/bazel_rules/rules_cc/cc:cc_test.bzl", "cc_test")
+load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
+load("@rules_cc//cc:cc_test.bzl", "cc_test")
 
 def ruy_test(name, srcs, lhs_rhs_accum_dst, copts, tags = [], deps = None):
     for (lhs, rhs, accum, dst) in lhs_rhs_accum_dst: