mirror of
https://github.com/carbon-language/carbon-lang.git
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Chandler Carruth
9836ba6e9c
This is the last really generic part of the toolchain config that I can see to factor out with a reasonably small API surface.
76 lines
2.5 KiB
Python
76 lines
2.5 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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"""Helpers to construct ordered sequences of `cc_toolchain` features."""
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load(
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":cc_toolchain_base_features.bzl",
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"base_features",
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"output_flags_feature",
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"user_flags_feature",
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)
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load(
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":cc_toolchain_config_features.bzl",
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"target_cpu_features",
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"target_os_features",
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)
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load(
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":cc_toolchain_cpp_features.bzl",
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"clang_feature",
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"clang_warnings_feature",
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)
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load(":cc_toolchain_debugging.bzl", "debugging_features")
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load(":cc_toolchain_linking.bzl", "linking_features")
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load(":cc_toolchain_modules.bzl", "modules_features")
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load(":cc_toolchain_optimization.bzl", "optimization_features")
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load(":cc_toolchain_sanitizer_features.bzl", "sanitizer_features")
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def clang_cc_toolchain_features(
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target_os,
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target_cpu,
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project_features = [],
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extra_cpp_features = []):
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"""Builds a sequence of Clang-oriented `cc_toolchain_config` features.
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Returns:
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The list of features for calling `create_cc_toolchain_config_info`.
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Args:
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target_os: Used to select OS-specific features to include.
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target_cpu: Used to select CPU-specific features to include.
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project_features: Optional list of project-specific features to include.
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extra_cpp_features: Optional list of extra C++ features to include, for
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example `libcxx_feature` can be passed here to enable using libc++.
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"""
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# The order of the features determines the relative order of flags used.
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features = []
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features += target_os_features(target_os)
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features += target_cpu_features(target_cpu)
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features += base_features
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features += [
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# We always use Clang in the toolchain and enable all of its warnings.
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clang_feature,
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clang_warnings_feature,
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]
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# Enable any extra baseline C++ features here where others can override
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# their flags if needed.
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features += extra_cpp_features
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features += sanitizer_features
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features += optimization_features
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features += modules_features
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features += debugging_features
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features += linking_features
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# Lastly, we add project features and the user flags so they can override
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# anything above, and the output flags last of all for ease of debugging.
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features += project_features
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features += [
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user_flags_feature,
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output_flags_feature,
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]
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return features
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