使用Bazel构建时如何设置C ++标准版本? [英] How to set C++ standard version when build with Bazel?

问题描述

我是C ++的新手.我知道如何使用CMake设置C ++版本，但不知道如何在Bazel中设置C ++版本.

I'm kinda new to C++. I know how to set C++ version with CMake, but don't know how to set C++ version in Bazel.

也许可以在cc_libary中使用copts参数进行设置，但是我必须在每个cc_libary中进行设置?

Maybe set with the copts parameter in cc_libary but I have to set this in every cc_libary?

推荐答案

要使用Bazel中的默认C ++工具链设置标准，您可以设置环境变量BAZEL_CXXOPTS，例如BAZEL_CXXOPTS="-std=c++14".您也可以从命令行或使用--repo_env=BAZEL_CXXOPTS在.bazelrc中进行设置. :是标志分隔符.

To set the standard using the default C++ toolchain in Bazel you can set environment variable BAZEL_CXXOPTS, e.g. BAZEL_CXXOPTS="-std=c++14". You can also set it from the command line or from .bazelrc using --repo_env=BAZEL_CXXOPTS. : is the flag separator.

或者，您也可以将--cxxopt传递给Bazel，或将其放入.bazelrc中，例如--cxxopt='-std=c++11'.

Alternatively you can pass --cxxopt to Bazel, or put it into .bazelrc, e.g. --cxxopt='-std=c++11'.

在Bazel中指定C ++工具链的可靠解决方案是使用CcToolchainConfigInfo.请参阅 https://docs.bazel.build/版本/master/tutorial/cc-toolchain-config.html 和

The robust solution to specifying C++ toolchain in Bazel is to use the CcToolchainConfigInfo. See the documentation at https://docs.bazel.build/versions/master/tutorial/cc-toolchain-config.html and https://docs.bazel.build/versions/master/cc-toolchain-config-reference.html.

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