Cannot build protobuf_cpp

[quickiwiki]

What version of protobuf and what language are you using? Version: main/v3.6.0/v3.5.0 etc. (NOTE: please try updating to the latest version of protoc/runtime possible beforehand to attempt to resolve your problem) Language: C++

What operating system (Linux, Windows, ...) and version? Linux Ubuntu 19.10

What runtime / compiler are you using (e.g., python version or gcc version) gcc version 8.4.0

What did you do?

1. downloaded https://github.com/protocolbuffers/protobuf/releases/download/v21.12/protobuf-cpp-3.21.12.zip
2. extracted to protobuf-cpp-3.21.12
3. cd protobuf-cpp-3.21.12
4. bazel build :protoc :protobuf

What did you expect to see the build What did you see instead?

ERROR: Traceback (most recent call last): File "/home/user/src/protobuf-3.21.11/WORKSPACE", line 65, column 20, in kotlin_repositories() File "/home/user/.cache/bazel/bazel_el/4ff2ab00280bf986db63a7ce46013904/external/io_bazel_rules_kotlin/src/main/starlark/core/repositories/initialize.bzl", line 96, column 21, in kotlin_repositories rules_repository( Error in repository_rule: invalid user-provided repo name '': valid names may contain only A-Z, a-z, 0-9, '-', '', '.', and must start with a letter ERROR: Error computing the main repository mapping: at /home/user/.cache/bazel/_bazel_el/4ff2ab00280bf986db63a7ce46013904/external/io_bazel_rules_kotlin/kotlin/core.bzl:2:5: at /home/user/.cache/bazel/_bazel_el/4ff2ab00280bf986db63a7ce46013904/external/io_bazel_rules_kotlin/kotlin/internal/opts.bzl:16:5: Encountered error while reading extension file 'kotlin/opts.bzl': no such package '@io_bazel_rules_kotlin_configured//kotlin': error loading package 'external': Could not load //external package

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