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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.
Maybe set with the copts parameter in cc_libary but I have to set this in every cc_libary?
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On Ubuntu, the default compiler is the first gcc compiler in the PATH . On macOS, the default compiler is the Apple LLVM compiler. To use Clang on Ubuntu, add --config=clang after any bazel build, bazel test or any other bazel commands.
Bazel still uses g++ as compiler. After an hour, Bazel uses clang++.
bazelrc in your workspace directory (next to the main WORKSPACE file). It is not an error if this file does not exist.
A Bazel toolchain is a configuration provider that tells a build rule what build tools, such as compilers and linkers, to use and how to configure them using parameters defined by the rule's creator.
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.
Alternatively you can pass --cxxopt to Bazel, or put it into .bazelrc, e.g. --cxxopt='-std=c++11'.
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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bazel build --cxxopt='-std=c++11' main:hello-world This would work, but I wonder if there's way to set this cxxopt globally, like CMAKE_CXX_FLAGS.
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