C++14 requirement error using Bazel 6.3.2 and earlier

[jty2]

Since 43d9a76, C++14 is needed to build absl.

When using Bazel 6.3.2, I get this error when building fleetbench/proto:proto_benchmark

external/com_google_absl/absl/base/policy_checks.h:79:2: error: "C++ versions less than C++14 are not supported."

because Bazel 6.3.2 explicitly sets -std=c++0x, so it will not work.

I think this means the minimum requirement is now Bazel 6.4.0 because it sets -std=c++14 due to #bazelbuild/bazel#19794.

Would you please update the Fleetbench documentation to reflect this requirement, or provide a workaround for Bazel 6.3.2 and earlier?

Thank you.

[rjogrady]

We weren't specifying the c++ version for the host toolchain in our .bazelrc, which is used to compile the protobuf compiler.

Should be fixed in 66fc3a5

Thanks for mentioning it!