mirror of
https://github.com/carbon-language/carbon-lang.git
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Chandler Carruth
2bbcfa5e1a
Also increases the default optimization to `-Og` which is likely to give faster turn-around time which is what we want to optimize for here. This should also _substantially_ shrink binary sizes, etc. ASan is still available via `--config=asan`, and is added to the CI infrastructure. However, my current thought is to only run it after push rather than in PRs and in the merge queue.
84 lines
3.2 KiB
Python
84 lines
3.2 KiB
Python
# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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# Exceptions. See /LICENSE for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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"""Defines `cc_toolchain_config` features specific to the Carbon project."""
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load("@rules_cc//cc:action_names.bzl", "ACTION_NAMES")
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load(
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"@rules_cc//cc:cc_toolchain_config_lib.bzl",
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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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"with_feature_set",
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)
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load(
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":cc_toolchain_actions.bzl",
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"all_compile_actions",
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"preprocessor_compile_actions",
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)
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# An enabled feature that requires the `fastbuild` compilation. This is used
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# to toggle general features on by default, while allowing them to be
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# directly enabled and disabled more generally as desired.
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carbon_project_fastbuild_feature = feature(
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name = "enable_in_fastbuild",
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enabled = True,
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requires = [feature_set(["fastbuild"])],
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implies = [
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"minimal_optimization_flags",
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"minimal_debug_info_flags",
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"preserve_call_stacks",
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],
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)
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def carbon_project_features(cache_key):
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return [carbon_project_fastbuild_feature, feature(
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name = "project_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_compile_actions,
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flag_groups = [flag_group(flags = [
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# Don't warn on external code as we can't
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# necessarily patch it easily. Note that these have
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# to be initial directories in the `#include` line.
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"--system-header-prefix=absl/",
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"--system-header-prefix=benchmark/",
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"--system-header-prefix=boost/",
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"--system-header-prefix=clang-tools-extra/",
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"--system-header-prefix=clang/",
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"--system-header-prefix=gmock/",
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"--system-header-prefix=gtest/",
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"--system-header-prefix=libfuzzer/",
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"--system-header-prefix=llvm/",
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"--system-header-prefix=re2/",
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"--system-header-prefix=tools/cpp/",
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"--system-header-prefix=tree_sitter/",
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])],
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),
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flag_set(
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actions = preprocessor_compile_actions,
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flag_groups = [flag_group(flags = [
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# Pass a cache key as a `-D` flag to avoid unintended Bazel
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# cache hits when the underlying toolchain changes.
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# TODO: We should consider replacing this by causing changes
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# to the installed toolchain to more reliably end up as part
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# of the action digest.
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"-DBAZEL_COMPILE_CACHE_KEY=\"%s\"" % cache_key,
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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.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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],
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flag_groups = [flag_group(flags = ["-DHAVE_MALLCTL"])],
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with_features = [with_feature_set(["freebsd_target"])],
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),
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],
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)]
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