| # Copyright 2023 Google LLC |
| # |
| # 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 |
| # |
| # https://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. |
| |
| """Macro that extracts clang runtime libraries from the current cc_toolchain.""" |
| |
| def clang_runtime_lib(*, name, basenames, **kwargs): |
| """Provide the first available clang runtime library with any of the given basenames as output. |
| |
| The basename of the output file is always the first of the given basenames. |
| """ |
| native.genrule( |
| name = name, |
| outs = basenames[:1], |
| cmd = "\n".join(["""cp -f "$$($(CC) --print-file-name {})" $@ 2> /dev/null || true""".format(basename) for basename in basenames]), |
| toolchains = ["@bazel_tools//tools/cpp:current_cc_toolchain"], |
| tools = ["@bazel_tools//tools/cpp:current_cc_toolchain"], |
| **kwargs |
| ) |
