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This let's you point Bazel at an installed toolchain or download one of our release archives. When you do, it will configure itself as a C++ Bazel toolchain. This toolchain works reasonably well, but doesn't cache the C++ runtimes, and so linking is inefficient. The next step will be to pivot the runtimes from the implicitly on-demand (which can't cache when using a sandboxed build system like Bazel) to _explicit_ on-demand runtimes directly with Bazel support. I've included an example Bazel project that uses this and provides a bunch of documentation and an example script that should let folks try this out easily. --------- Co-authored-by: Geoff Romer <gromer@google.com> Co-authored-by: David Blaikie <dblaikie@gmail.com>
66 lines
1.6 KiB
Python
66 lines
1.6 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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load("@bazel_skylib//lib:selects.bzl", "selects")
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package(default_visibility = ["//visibility:public"])
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# For use by defs.bzl.
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# Matches when asan is enabled on a macOS platform.
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selects.config_setting_group(
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name = "macos_asan",
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match_all = [
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":is_macos",
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":macos_asan_build_modes",
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],
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)
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# For use by defs.bzl.
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# Matches macOS platforms.
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config_setting(
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name = "is_macos",
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constraint_values = ["@platforms//os:macos"],
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)
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# For use by defs.bzl.
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# Matches build modes where asan is enabled.
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selects.config_setting_group(
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name = "macos_asan_build_modes",
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match_any = [
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":dbg",
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":fastbuild",
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],
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)
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# For use by defs.bzl.
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# Matches dbg.
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config_setting(
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name = "dbg",
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values = {"compilation_mode": "dbg"},
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)
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# For use by defs.bzl.
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# Matches fastbuild.
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config_setting(
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name = "fastbuild",
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values = {"compilation_mode": "fastbuild"},
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)
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filegroup(
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name = "installed_cc_toolchain_starlark",
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srcs = [
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"cc_toolchain_actions.bzl",
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"cc_toolchain_base_features.bzl",
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"cc_toolchain_config_features.bzl",
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"cc_toolchain_cpp_features.bzl",
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"cc_toolchain_debugging.bzl",
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"cc_toolchain_features.bzl",
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"cc_toolchain_linking.bzl",
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"cc_toolchain_modules.bzl",
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"cc_toolchain_optimization.bzl",
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"cc_toolchain_sanitizer_features.bzl",
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"cc_toolchain_tools.bzl",
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],
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)
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