485 lines
17 KiB
Python
485 lines
17 KiB
Python
# Copyright 2019 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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"""A Starlark cc_toolchain configuration rule"""
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load("@bazel_tools//tools/cpp:cc_toolchain_config_lib.bzl",
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"action_config",
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"artifact_name_pattern",
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"env_entry",
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"env_set",
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"feature",
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"feature_set",
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"flag_group",
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"flag_set",
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"make_variable",
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"tool",
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"tool_path",
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"variable_with_value",
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"with_feature_set",
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)
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load("@bazel_tools//tools/build_defs/cc:action_names.bzl", "ACTION_NAMES")
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all_compile_actions = [
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.clif_match,
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ACTION_NAMES.lto_backend,
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]
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all_cpp_compile_actions = [
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.clif_match,
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]
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preprocessor_compile_actions = [
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.clif_match,
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]
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codegen_compile_actions = [
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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]
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all_link_actions = [
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ACTION_NAMES.cpp_link_executable,
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ACTION_NAMES.cpp_link_dynamic_library,
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ACTION_NAMES.cpp_link_nodeps_dynamic_library,
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]
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def _impl(ctx):
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abi_version = "armeabi"
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abi_libc_version = "glibc_2.24"
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builtin_sysroot = None
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compiler = "gcc"
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host_system_name = "armeabi"
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needs_pic = True
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supports_gold_linker = False
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supports_incremental_linker = False
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supports_fission = False
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supports_interface_shared_objects = False
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supports_normalizing_ar = False
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supports_start_end_lib = False
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supports_thin_archives = False
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target_libc = "glibc_2.24"
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target_cpu = "armv7"
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target_system_name = "armeabi-v7a"
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toolchain_identifier = "gcc72_linaro_armhf"
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cc_target_os = None
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action_configs = []
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supports_pic_feature = feature(name = "supports_pic", enabled = True)
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supports_dynamic_linker_feature = feature(name = "supports_dynamic_linker", enabled = True)
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user_compile_flags_feature = feature(
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name = "user_compile_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = [
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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],
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flag_groups = [
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flag_group(
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flags = ["%{user_compile_flags}"],
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iterate_over = "user_compile_flags",
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expand_if_available = "user_compile_flags",
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),
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],
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),
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],
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)
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user_link_flags_feature = feature(
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name = "user_link_flags",
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flag_sets = [
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flag_set(
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actions = all_link_actions,
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flag_groups = [
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flag_group(
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flags = ["%{user_link_flags}"],
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iterate_over = "user_link_flags",
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expand_if_available = "user_link_flags",
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),
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],
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),
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],
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)
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shared_flag_feature = feature(
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name = "shared_flag",
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flag_sets = [
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flag_set(
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actions = [
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ACTION_NAMES.cpp_link_dynamic_library,
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ACTION_NAMES.cpp_link_nodeps_dynamic_library,
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ACTION_NAMES.lto_index_for_dynamic_library,
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ACTION_NAMES.lto_index_for_nodeps_dynamic_library,
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],
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flag_groups = [flag_group(flags = ["-shared"])],
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),
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],
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)
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sysroot_feature = feature(
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name = "sysroot",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = [
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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ACTION_NAMES.cpp_link_executable,
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ACTION_NAMES.cpp_link_dynamic_library,
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ACTION_NAMES.cpp_link_nodeps_dynamic_library,
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],
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flag_groups = [
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flag_group(
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flags = ["--sysroot=%{sysroot}"],
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expand_if_available = "sysroot",
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),
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],
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),
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],
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)
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objcopy_embed_flags_feature = feature(
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name = "objcopy_embed_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = ["objcopy_embed_data"],
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flag_groups = [flag_group(flags = ["-I", "binary"])],
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),
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],
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)
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unfiltered_compile_flags_feature = feature(
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name = "unfiltered_compile_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = [
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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],
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flag_groups = [
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flag_group(
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flags = [
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# Make C++ compilation deterministic. Use linkstamping instead of these
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# compiler symbols.
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"-Wno-builtin-macro-redefined",
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"-D__DATE__=\"redacted\"",
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"-D__TIMESTAMP__=\"redacted\"",
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"-D__TIME__=\"redacted\"",
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# This makes GCC and Clang do what we want when called through symlinks.
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"-no-canonical-prefixes",
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],
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),
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],
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),
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],
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)
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default_compile_flags_feature = feature(
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name = "default_compile_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = [
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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],
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flag_groups = [
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flag_group(
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flags = [
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"-U_FORTIFY_SOURCE",
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"-D_FORTIFY_SOURCE=1",
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"-fstack-protector",
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],
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),
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],
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),
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flag_set(
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actions = [
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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],
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flag_groups = [flag_group(flags = ["-g"])],
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with_features = [with_feature_set(features = ["dbg"])],
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),
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flag_set(
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actions = [
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ACTION_NAMES.assemble,
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ACTION_NAMES.preprocess_assemble,
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.c_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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],
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flag_groups = [
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flag_group(
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flags = [
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"-g0",
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"-O2",
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"-DNDEBUG",
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"-ffunction-sections",
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"-fdata-sections",
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],
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),
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],
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with_features = [with_feature_set(features = ["opt"])],
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),
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flag_set(
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actions = [
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ACTION_NAMES.linkstamp_compile,
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ACTION_NAMES.cpp_compile,
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ACTION_NAMES.cpp_header_parsing,
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ACTION_NAMES.cpp_module_compile,
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ACTION_NAMES.cpp_module_codegen,
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ACTION_NAMES.lto_backend,
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ACTION_NAMES.clif_match,
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],
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flag_groups = [
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flag_group(
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flags = [
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"-std=c++11",
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"--sysroot=external/LinaroArmGcc72/arm-linux-gnueabihf/libc",
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"-pthread",
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"-nostdinc",
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"-isystem",
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"external/LinaroArmGcc72/arm-linux-gnueabihf/include/c++/7.2.1/arm-linux-gnueabihf",
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"-isystem",
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"external/LinaroArmGcc72/arm-linux-gnueabihf/include/c++/7.2.1",
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"-isystem",
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"external/LinaroArmGcc72/lib/gcc/arm-linux-gnueabihf/7.2.1/include",
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"-isystem",
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"external/LinaroArmGcc72/arm-linux-gnueabihf/libc/usr/include",
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"-isystem",
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"external/LinaroArmGcc72/lib/gcc/arm-linux-gnueabihf/7.2.1/include-fixed",
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"-isystem",
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"external/LinaroArmGcc72/arm-linux-gnueabihf/libc/usr/include",
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"-isystem",
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"external/LinaroArmGcc72/arm-linux-gnueabihf/libc/usr/include/arm-linux-gnueabihf",
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"-isystem",
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"external/LinaroArmGcc72/lib/gcc/arm-linux-gnueabihf/7.2.1/include",
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"-isystem",
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"external/LinaroArmGcc72/include/c++/7.2.1/arm-linux-gnueabihf",
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"-isystem",
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"external/LinaroArmGcc72/include/c++/7.2.1",
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# Security hardening on by default.
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"-fstack-protector",
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"-fPIE",
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# All warnings are enabled. Maybe enable -Werror as well?
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"-Wall",
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# Enable a few more warnings that aren't part of -Wall.
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"-Wunused-but-set-parameter",
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# But disable some that are problematic.
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"-Wno-free-nonheap-object", # has false positives
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# Keep stack frames for debugging, even in opt mode.
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"-fno-omit-frame-pointer",
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# Enable coloring even if there's no attached terminal. Bazel removes the
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# escape sequences if --nocolor is specified.
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"-fdiagnostics-color=always",
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],
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),
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],
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),
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],
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)
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default_link_flags_feature = feature(
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name = "default_link_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = all_link_actions,
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flag_groups = [
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flag_group(
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flags = [
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# "-target",
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# "arm-linux-gnueabihf",
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"--sysroot=external/LinaroArmGcc72/arm-linux-gnueabihf/libc",
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"-pass-exit-codes",
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"-pie",
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"-lstdc++",
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"-lm",
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"-lpthread",
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"-Wl,--dynamic-linker=/lib/ld-linux-armhf.so.3",
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"-Wl,-no-as-needed",
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"-Wl,-z,relro,-z,now",
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"-no-canonical-prefixes",
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# Stamp the binary with a unique identifier.
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"-Wl,--build-id=md5",
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"-Wl,--hash-style=gnu",
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"-Lexternal/LinaroArmGcc72/arm-linux-gnueabihf/lib",
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"-Lexternal/LinaroArmGcc72/arm-linux-gnueabihf/libc/lib",
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"-Lexternal/LinaroArmGcc72/arm-linux-gnueabihf/libc/usr/lib",
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"-Bexternal/LinaroArmGcc72/arm-linux-gnueabihf/bin",
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],
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),
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],
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),
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flag_set(
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actions = all_link_actions,
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flag_groups = [flag_group(flags = ["-Wl,--gc-sections"])],
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with_features = [with_feature_set(features = ["opt"])],
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),
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],
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)
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opt_feature = feature(name = "opt")
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dbg_feature = feature(name = "dbg")
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features = [
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default_compile_flags_feature,
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default_link_flags_feature,
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supports_dynamic_linker_feature,
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supports_pic_feature,
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objcopy_embed_flags_feature,
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opt_feature,
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dbg_feature,
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user_compile_flags_feature,
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user_link_flags_feature,
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shared_flag_feature,
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sysroot_feature,
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unfiltered_compile_flags_feature,
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]
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cxx_builtin_include_directories = [
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"%package(@LinaroArmGcc72//include)%",
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"%package(@LinaroArmGcc72//arm-linux-gnueabihf/libc/usr/include)%",
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"%package(@LinaroArmGcc72//arm-linux-gnueabihf/libc/lib/gcc/arm-linux-gnueabihf/7.2.1/include-fixed)%",
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"%package(@LinaroArmGcc72//include)%/c++/7.2.1",
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"%package(@LinaroArmGcc72//arm-linux-gnueabihf/libc/lib/gcc/arm-linux-gnueabihf/7.2.1/include)%",
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"%package(@LinaroArmGcc72//arm-linux-gnueabihf/libc/lib/gcc/arm-linux-gnueabihf/7.2.1/include-fixed)%",
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"%package(@LinaroArmGcc72//lib/gcc/arm-linux-gnueabihf/7.2.1/include)%",
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"%package(@LinaroArmGcc72//lib/gcc/arm-linux-gnueabihf/7.2.1/include-fixed)%",
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"%package(@LinaroArmGcc72//arm-linux-gnueabihf/include)%/c++/7.2.1",
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]
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artifact_name_patterns = []
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make_variables = []
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tool_paths = [
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tool_path(name = "ar", path = "gcc/arm-linux-gnueabihf-ar"),
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tool_path(name = "compat-ld", path = "gcc/arm-linux-gnueabihf-ld"),
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tool_path(name = "cpp", path = "gcc/arm-linux-gnueabihf-cpp"),
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tool_path(name = "dwp", path = "gcc/arm-linux-gnueabihf-dwp"),
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tool_path(name = "gcc", path = "gcc/arm-linux-gnueabihf-gcc"),
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tool_path(name = "gcov", path = "arm-frc-linux-gnueabi/arm-frc-linux-gnueabi-gcov-4.9"),
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# C(++), compiles invoke the compiler (as that is the one knowing where
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# to find libraries),, but we provide LD so other rules can invoke the linker.
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tool_path(name = "ld", path = "gcc/arm-linux-gnueabihf-ld"),
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tool_path(name = "nm", path = "gcc/arm-linux-gnueabihf-nm"),
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tool_path(name = "objcopy", path = "gcc/arm-linux-gnueabihf-objcopy"),
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tool_path(name = "objdump", path = "gcc/arm-linux-gnueabihf-objdump"),
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tool_path(name = "strip", path = "gcc/arm-linux-gnueabihf-strip"),
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]
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return cc_common.create_cc_toolchain_config_info(
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ctx = ctx,
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features = features,
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action_configs = action_configs,
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artifact_name_patterns = artifact_name_patterns,
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cxx_builtin_include_directories = cxx_builtin_include_directories,
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toolchain_identifier = toolchain_identifier,
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host_system_name = host_system_name,
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target_system_name = target_system_name,
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target_cpu = target_cpu,
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target_libc = target_libc,
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compiler = compiler,
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abi_version = abi_version,
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abi_libc_version = abi_libc_version,
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tool_paths = tool_paths,
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make_variables = make_variables,
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builtin_sysroot = builtin_sysroot,
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cc_target_os = cc_target_os,
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)
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linaro_toolchain_config = rule(
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implementation = _impl,
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attrs = {},
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provides = [CcToolchainConfigInfo],
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)
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