Files
carbon-lang/bazel/cc_toolchains/cc_toolchain_config_features.bzl
T
Chandler Carruth d17609df5f Switch CPU flags to use feature-based selection and apply to links (#6611)
Now the CPU flags feature can be unconditionally added as part of the
optimization features and another of the conditions in the main
configuration goes away.

The failure to pass these to links was probably harmless, but it's
better to include it there as well.
2026-01-16 08:14:53 +00:00

50 lines
1.6 KiB
Python

# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
# Exceptions. See /LICENSE for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""Configuration features for other features in a `cc_toolchain_config`.
These features are designed to be used by other features in a
`cc_toolchain_config` that need to configure their behavior in some way. This
can be configuration based on either the target or host of the build, and along
multiple dimensions of each.
"""
load(
"@rules_cc//cc:cc_toolchain_config_lib.bzl",
"feature",
)
freebsd_target_feature = feature(name = "freebsd_target", enabled = True)
linux_target_feature = feature(name = "linux_target", enabled = True)
macos_target_feature = feature(name = "macos_target", enabled = True)
windows_target_feature = feature(name = "windows_target", enabled = True)
os_target_features = {
"freebsd": [freebsd_target_feature],
"linux": [linux_target_feature],
"macos": [macos_target_feature],
"windows": [windows_target_feature],
}
def target_os_features(os):
if os not in os_target_features:
fail("Unsupported target OS: %s" % os)
return os_target_features[os]
aarch64_target_feature = feature(name = "aarch64_target", enabled = True)
x86_64_target_feature = feature(name = "x86_64_target", enabled = True)
cpu_target_features = {
"aarch64": [aarch64_target_feature],
"arm64": [aarch64_target_feature],
"x86_64": [x86_64_target_feature],
}
def target_cpu_features(cpu):
if cpu not in cpu_target_features:
fail("Unsupported target CPU: %s" % cpu)
return cpu_target_features[cpu]