mirror of https://github.com/bazelbuild/rules_cc
Implement the cc_toolchain macro.
BEGIN_PUBLIC Implement the cc_toolchain macro. Things should be working at this point. This will be followed up with an example. END_PUBLIC PiperOrigin-RevId: 613436885 Change-Id: I1fc4a1e3a71c4f819998b69c73922821322d2991
This commit is contained in:
Googler
Copybara-Service
parent
de4aaa6472
commit
1ff1af662e
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@ -138,6 +138,19 @@ cc_action_type(
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action_name = ACTION_NAMES.clif_match,
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)
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cc_action_type_set(
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name = "all_ar_actions",
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actions = [":cpp_link_static_library"],
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)
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cc_action_type_set(
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name = "all_assembly_actions",
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actions = [
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":preprocess_assemble",
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":assemble",
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],
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)
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cc_action_type_set(
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name = "all_cpp_compile_actions",
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actions = [
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@ -161,6 +174,14 @@ cc_action_type_set(
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],
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)
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cc_action_type_set(
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name = "all_compile_actions",
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actions = [
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":all_cc_compile_actions",
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":all_cpp_compile_actions",
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],
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)
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cc_action_type_set(
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name = "all_cc_link_actions",
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actions = [
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@ -80,6 +80,12 @@ def _cc_toolchain_config_impl(ctx):
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abi_libc_version = ctx.attr.abi_libc_version,
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builtin_sysroot = ctx.attr.sysroot or None,
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),
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# This allows us to support all_files.
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# If all_files was simply an alias to
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# ///cc/toolchains/actions:all_actions,
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# then if a toolchain introduced a new type of action, it wouldn't get
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# put in all_files.
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DefaultInfo(files = depset(transitive = toolchain_config.files.values())),
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]
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cc_toolchain_config = rule(
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@ -0,0 +1,143 @@
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# Copyright 2024 The Bazel Authors. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Implementation of the cc_toolchain rule."""
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load("//cc:defs.bzl", "cc_toolchain")
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load(
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"//cc/toolchains/impl:toolchain_config.bzl",
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"cc_legacy_file_group",
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"cc_toolchain_config",
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)
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visibility("public")
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# Taken from https://bazel.build/docs/cc-toolchain-config-reference#actions
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# TODO: This is best-effort. Update this with the correct file groups once we
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# work out what actions correspond to what file groups.
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_LEGACY_FILE_GROUPS = {
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"ar_files": [
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"@rules_cc//cc/toolchains/actions:all_ar_actions", # copybara-use-repo-external-label
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],
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"as_files": [
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"@rules_cc//cc/toolchains/actions:all_assembly_actions", # copybara-use-repo-external-label
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],
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"compiler_files": [
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"@rules_cc//cc/toolchains/actions:cc_flags_make_variable", # copybara-use-repo-external-label
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"@rules_cc//cc/toolchains/actions:c_compile", # copybara-use-repo-external-label
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"@rules_cc//cc/toolchains/actions:cpp_compile", # copybara-use-repo-external-label
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"@rules_cc//cc/toolchains/actions:cpp_header_parsing", # copybara-use-repo-external-label
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],
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# There are no actions listed for coverage, dwp, and objcopy in action_names.bzl.
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"coverage_files": [],
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"dwp_files": [],
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"linker_files": [
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"@rules_cc//cc/toolchains/actions:cpp_link_dynamic_library", # copybara-use-repo-external-label
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"@rules_cc//cc/toolchains/actions:cpp_link_nodeps_dynamic_library", # copybara-use-repo-external-label
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"@rules_cc//cc/toolchains/actions:cpp_link_executable", # copybara-use-repo-external-label
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],
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"objcopy_files": [],
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"strip_files": [
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"@rules_cc//cc/toolchains/actions:strip", # copybara-use-repo-external-label
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],
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}
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def cc_toolchain(
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name,
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dynamic_runtime_lib = None,
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libc_top = None,
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module_map = None,
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output_licenses = [],
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static_runtime_lib = None,
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supports_header_parsing = False,
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supports_param_files = True,
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target_compatible_with = None,
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exec_compatible_with = None,
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compatible_with = None,
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tags = [],
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visibility = None,
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**kwargs):
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"""A macro that invokes native.cc_toolchain under the hood.
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Generated rules:
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{name}: A `cc_toolchain` for this toolchain.
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_{name}_config: A `cc_toolchain_config` for this toolchain.
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_{name}_*_files: Generated rules that group together files for
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"ar_files", "as_files", "compiler_files", "coverage_files",
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"dwp_files", "linker_files", "objcopy_files", and "strip_files"
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normally enumerated as part of the `cc_toolchain` rule.
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Args:
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name: str: The name of the label for the toolchain.
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dynamic_runtime_lib: See cc_toolchain.dynamic_runtime_lib
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libc_top: See cc_toolchain.libc_top
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module_map: See cc_toolchain.module_map
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output_licenses: See cc_toolchain.output_licenses
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static_runtime_lib: See cc_toolchain.static_runtime_lib
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supports_header_parsing: See cc_toolchain.supports_header_parsing
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supports_param_files: See cc_toolchain.supports_param_files
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target_compatible_with: target_compatible_with to apply to all generated
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rules
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exec_compatible_with: exec_compatible_with to apply to all generated
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rules
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compatible_with: compatible_with to apply to all generated rules
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tags: Tags to apply to all generated rules
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visibility: Visibility of toolchain rule
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**kwargs: Args to be passed through to cc_toolchain_config.
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"""
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all_kwargs = {
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"compatible_with": compatible_with,
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"exec_compatible_with": exec_compatible_with,
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"tags": tags,
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"target_compatible_with": target_compatible_with,
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}
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for group in _LEGACY_FILE_GROUPS:
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if group in kwargs:
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fail("Don't use legacy file groups such as %s. Instead, associate files with tools, actions, and args." % group)
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config_name = "_{}_config".format(name)
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cc_toolchain_config(
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name = config_name,
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visibility = ["//visibility:private"],
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**(all_kwargs | kwargs)
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)
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# Provides ar_files, compiler_files, linker_files, ...
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legacy_file_groups = {}
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for group, actions in _LEGACY_FILE_GROUPS.items():
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group_name = "_{}_{}".format(name, group)
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cc_legacy_file_group(
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name = group_name,
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config = config_name,
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actions = actions,
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visibility = ["//visibility:private"],
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**all_kwargs
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)
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legacy_file_groups[group] = group_name
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if visibility != None:
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all_kwargs["visibility"] = visibility
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cc_toolchain(
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name = name,
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toolchain_config = config_name,
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all_files = config_name,
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dynamic_runtime_lib = dynamic_runtime_lib,
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libc_top = libc_top,
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module_map = module_map,
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output_licenses = output_licenses,
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static_runtime_lib = static_runtime_lib,
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supports_header_parsing = supports_header_parsing,
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supports_param_files = supports_param_files,
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**(all_kwargs | legacy_file_groups)
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)
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