[Question]symbol lookup error about stratum

[Dscano]

Hi yhx-coder,

did you build on your own the stratum_bmv2 or you download it form stratum assets? That error seems related to bmv2 switch rather than stratum. https://github.com/p4lang/behavioral-model/search?q=InvalidMirroringOperation

[pudelkoM]

The bmv2 version is not as self-contained as the others. It requires some libraries that have to be manually installed beforehand.
You can check how the bmv2 Docker image built and replicate that locally:

stratum/Dockerfile.build

Lines 63 to 85 in 88d02d5

	ARG PI_COMMIT
	RUN git clone https://github.com/p4lang/PI.git /tmp/PI && \
	cd /tmp/PI && git checkout ${PI_COMMIT} && \
	git submodule update --init --recursive && \
	./autogen.sh && \
	./configure --without-bmv2 --without-proto --without-fe-cpp \
	--without-cli --without-internal-rpc && \
	make -j${JOBS} && make install && ldconfig && \
	rm -rf /tmp/PI
	ARG BMV2_COMMIT
	ENV BMV2_INSTALL /usr/local
	RUN git clone https://github.com/p4lang/behavioral-model.git /tmp/bmv2 && \
	cd /tmp/bmv2 && git checkout ${BMV2_COMMIT} && \
	./autogen.sh && \
	./configure --without-targets --with-pi --disable-elogger \
	--without-nanomsg --without-thrift --prefix=${BMV2_INSTALL} \
	CXXFLAGS="-I${PWD}/targets/simple_switch -DWITH_SIMPLE_SWITCH -isystem$BMV2_INSTALL/include -isystem$PI_INSTALL/include -L$PI_INSTALL/lib" && \
	make -j${JOBS} && make install && ldconfig && \
	cd targets/simple_switch && \
	make -j${JOBS} && make install && ldconfig && \
	cp /tmp/bmv2/tools/veth* ${BMV2_INSTALL}/bin/ && \
	rm -rf /tmp/bmv2

stratum/tools/mininet/Dockerfile

Lines 12 to 71 in 88d02d5

	ENV BUILD_DEPS \
	python-setuptools \
	python-pip \
	help2man
	RUN apt-get update && \
	apt-get install -y --no-install-recommends ${BUILD_DEPS}
	# Build Mininet
	RUN mkdir /tmp/mininet
	WORKDIR /tmp/mininet
	RUN curl -L https://github.com/mininet/mininet/tarball/master | \
	tar xz --strip-components 1
	# Install in a special directory that we will copy to the runtime image.
	RUN mkdir -p /output
	RUN PREFIX=/output make install-mnexec install-manpages
	RUN python setup.py install --root /output
	# Install `m` utility so user can attach to a mininet host directly
	RUN cp util/m /output/bin/m && sed -i 's#sudo##g' /output/bin/m
	# Copy Stratum souce to build additionally needed targets.
	COPY . /tmp/stratum
	WORKDIR /tmp/stratum
	# As well as the P4Runtime Python bindings installed by PI. This is not needed
	# to run mininet, but it's useful to execute Python scripts acting as a
	# P4Runtime client, e.g. control plane apps or PTF tests.
	RUN bazel build @com_github_p4lang_p4runtime//:p4runtime_proto \
	@com_google_protobuf//:protobuf_python \
	@com_google_googleapis//google/rpc:status_cc_proto \
	@com_google_googleapis//google/rpc:status_proto \
	@com_google_googleapis//google/rpc:error_details_cc_proto \
	@com_google_googleapis//google/rpc:error_details_proto \
	@com_google_googleapis//google/rpc:code_cc_proto \
	@com_google_googleapis//google/rpc:code_proto \
	@com_github_grpc_grpc//src/compiler:grpc_python_plugin
	ENV PYTHON_PACKAGE_BASE /output/usr/local/lib/python2.7/dist-packages
	RUN ./bazel-out/host/bin/external/com_google_protobuf/protoc \
	./bazel-stratum/external/com_github_p4lang_p4runtime/p4/v1/p4data.proto \
	./bazel-stratum/external/com_github_p4lang_p4runtime/p4/v1/p4runtime.proto \
	./bazel-stratum/external/com_github_p4lang_p4runtime/p4/config/v1/p4info.proto \
	./bazel-stratum/external/com_github_p4lang_p4runtime/p4/config/v1/p4types.proto \
	./bazel-stratum/external/com_google_googleapis/google/rpc/status.proto \
	./bazel-stratum/external/com_google_googleapis/google/rpc/code.proto \
	-I./bazel-stratum/external/com_google_googleapis -I./bazel-stratum/external/com_github_p4lang_p4runtime \
	-I./bazel-stratum/external/com_google_protobuf/src \
	--python_out $PYTHON_PACKAGE_BASE --grpc_out $PYTHON_PACKAGE_BASE \
	--plugin=protoc-gen-grpc=./bazel-bin/external/com_github_grpc_grpc/src/compiler/grpc_python_plugin
	RUN touch $PYTHON_PACKAGE_BASE/p4/__init__.py && \
	touch $PYTHON_PACKAGE_BASE/p4/v1/__init__.py && \
	touch $PYTHON_PACKAGE_BASE/p4/config/__init__.py && \
	touch $PYTHON_PACKAGE_BASE/p4/config/v1/__init__.py && \
	touch $PYTHON_PACKAGE_BASE/google/__init__.py && \
	touch $PYTHON_PACKAGE_BASE/google/rpc/__init__.py
	# Install a version of the protobuf and grpc python bindings that is
	# compatible to that used to generate the P4Runtime ones.
	ARG PROTOBUF_VER=3.14.0
	ARG GRPC_VER=1.33.2
	RUN pip install --root /output "protobuf<=${PROTOBUF_VER}"
	RUN pip install --root /output "grpcio<=${GRPC_VER}"

[yhx-coder]

thanks. I try to follow the Dockerfile.build, the previous error is fixed.However, another error happens: stratum_bmv2: undefined symbol: _pi_port_status_get.Now I guess the the reason is that I don't build the bmv2 or pi correcttly. It's a little difficult for me :( .I decide to use the docker. thanks for your support.

[pudelkoM]

Sorry to hear that. Getting the PI and bmv2 setup right is indeed tricky. That's why we're relying on docker images for it.
I hope you can solve your use case with docker.

If there is anything else, feel free to re-open this issue or create a new one.