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+# Copyright 2019 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.
+
+"""Example showing how to create a rule that rules_cc can depend on."""
+
+load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "find_cpp_toolchain", "use_cpp_toolchain")
+load("@rules_cc//cc:action_names.bzl", "CPP_LINK_STATIC_LIBRARY_ACTION_NAME")
+load("//examples/my_c_compile:my_c_compile.bzl", "MyCCompileInfo")
+
+def _my_c_archive_impl(ctx):
+ cc_toolchain = find_cpp_toolchain(ctx)
+ object_file = ctx.attr.object[MyCCompileInfo].object
+ output_file = ctx.actions.declare_file(ctx.label.name + ".a")
+
+ feature_configuration = cc_common.configure_features(
+ ctx = ctx,
+ cc_toolchain = cc_toolchain,
+ requested_features = ctx.features,
+ unsupported_features = ctx.disabled_features,
+ )
+
+ linker_input = cc_common.create_linker_input(
+ owner = ctx.label,
+ libraries = depset(direct = [
+ cc_common.create_library_to_link(
+ actions = ctx.actions,
+ feature_configuration = feature_configuration,
+ cc_toolchain = cc_toolchain,
+ static_library = output_file,
+ ),
+ ]),
+ )
+ compilation_context = cc_common.create_compilation_context()
+ linking_context = cc_common.create_linking_context(linker_inputs = depset(direct = [linker_input]))
+
+ archiver_path = cc_common.get_tool_for_action(
+ feature_configuration = feature_configuration,
+ action_name = CPP_LINK_STATIC_LIBRARY_ACTION_NAME,
+ )
+ archiver_variables = cc_common.create_link_variables(
+ feature_configuration = feature_configuration,
+ cc_toolchain = cc_toolchain,
+ output_file = output_file.path,
+ is_using_linker = False,
+ )
+ command_line = cc_common.get_memory_inefficient_command_line(
+ feature_configuration = feature_configuration,
+ action_name = CPP_LINK_STATIC_LIBRARY_ACTION_NAME,
+ variables = archiver_variables,
+ )
+ args = ctx.actions.args()
+ args.add_all(command_line)
+ args.add(object_file)
+
+ env = cc_common.get_environment_variables(
+ feature_configuration = feature_configuration,
+ action_name = CPP_LINK_STATIC_LIBRARY_ACTION_NAME,
+ variables = archiver_variables,
+ )
+
+ ctx.actions.run(
+ executable = archiver_path,
+ arguments = [args],
+ env = env,
+ inputs = depset(
+ direct = [object_file],
+ transitive = [
+ cc_toolchain.all_files,
+ ],
+ ),
+ outputs = [output_file],
+ )
+
+ cc_info = cc_common.merge_cc_infos(cc_infos = [
+ CcInfo(compilation_context = compilation_context, linking_context = linking_context),
+ ] + [dep[CcInfo] for dep in ctx.attr.deps])
+ return [cc_info]
+
+my_c_archive = rule(
+ implementation = _my_c_archive_impl,
+ attrs = {
+ "deps": attr.label_list(providers = [CcInfo]),
+ "object": attr.label(mandatory = True, providers = [MyCCompileInfo]),
+ "_cc_toolchain": attr.label(default = Label("@bazel_tools//tools/cpp:current_cc_toolchain")),
+ },
+ fragments = ["cpp"],
+ toolchains = use_cpp_toolchain(),
+)