| # Copyright 2026 The Bazel Authors. All rights reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Rule that allows select() to differentiate between C standard libraries.""" |
| |
| load("//cc:find_cc_toolchain.bzl", "CC_TOOLCHAIN_ATTRS", "find_cpp_toolchain", "use_cc_toolchain") |
| load("//cc/toolchains/impl:libc_version.bzl", "libc_without_version") |
| |
| def _libc_flag_impl(ctx): |
| toolchain = find_cpp_toolchain(ctx) |
| return [config_common.FeatureFlagInfo(value = libc_without_version(toolchain.libc))] |
| |
| libc_flag = rule( |
| implementation = _libc_flag_impl, |
| attrs = CC_TOOLCHAIN_ATTRS, |
| toolchains = use_cc_toolchain(), |
| ) |
