This file was generated by a newer version of protoc - protocol-buffers

Question

I am using bazel, proto and grpc in a C++ project with multiple packages.
One of the package doesn't use grpc but uses protobufs, and that is the one that creates the problem.
This is (the beginning) of the error message:
In file included from cc/tensorflow/plugin_primeclient/kernels/var.inc:7,
from cc/tensorflow/plugin_primeclient/kernels/kernels.cc:58:
bazel-out/aarch64-fastbuild/bin/cc/tensorflow/plugin/interface/proto/resource_handle.pb.h:12:2: error: #error This file was generated by a newer version of protoc which is
12 | #error This file was generated by a newer version of protoc which is
| ^~~~~
bazel-out/aarch64-fastbuild/bin/cc/tensorflow/plugin/interface/proto/resource_handle.pb.h:13:2: error: #error incompatible with your Protocol Buffer headers. Please update
13 | #error incompatible with your Protocol Buffer headers. Please update
| ^~~~~
bazel-out/aarch64-fastbuild/bin/cc/tensorflow/plugin/interface/proto/resource_handle.pb.h:14:2: error: #error your headers.
14 | #error your headers.
| ^~~~~
What I don't understand is that this file is generated by bazel using protoc, how can it end up using different versions of protocol buffers?
Here is my WORKSPACE:
load("#bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
http_archive(
name = "rules_proto",
sha256 = "66bfdf8782796239d3875d37e7de19b1d94301e8972b3cbd2446b332429b4df1",
strip_prefix = "rules_proto-4.0.0",
urls = [
"https://mirror.bazel.build/github.com/bazelbuild/rules_proto/archive/refs/tags/4.0.0.tar.gz",
"https://github.com/bazelbuild/rules_proto/archive/refs/tags/4.0.0.tar.gz",
],
)
load("#rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_proto_toolchains")
rules_proto_dependencies()
rules_proto_toolchains()
http_archive(
name = "com_github_grpc_grpc",
urls = [
"https://github.com/grpc/grpc/archive/refs/tags/v1.44.0.tar.gz",
],
sha256 = "8c05641b9f91cbc92f51cc4a5b3a226788d7a63f20af4ca7aaca50d92cc94a0d",
strip_prefix = "grpc-1.44.0",
)
load("#com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
grpc_deps()
load("#com_github_grpc_grpc//bazel:grpc_extra_deps.bzl", "grpc_extra_deps")
grpc_extra_deps()
And the relevant BUILD:
cc_library(
name = "interface", # interface is used as a dependency for another package
hdrs = glob(["interface/**/*.h"]) + glob(["interface/**/*_impl.inc"]),
includes = ["interface"],
strip_include_prefix = "interface",
deps = [":interface_cc_proto"],
visibility = ["//cc/tensorflow:__subpackages__"],
)
cc_proto_library(
name = "interface_cc_proto",
deps = [":interface_proto"],
)
proto_library(
name = "interface_proto",
srcs = glob(["interface/**/*.proto"])
)
I would like to solve this mismatch issue.
Edit: I am running everything within a devcontainer using the tensorflow image from arm dockerhub. I tried uninstalling protoc before running bazel, I had the exact same issue.

Answer 1

I had the same problem, I came to know that there was a conflict between two versions of the protobuf installed via apt-get and from the source.
I checked via :
for apt-get:
export PATH=/usr/bin:$PATH
protoc --version
and for source:
export PATH=/usr/local/bin:$PATH
protoc --version
then removed the one installed through source,next I checked again and both were the same version.