error: undefined reference to 'cudaFree' about apollo HOT 2 CLOSED

you can try the following actions to recompile:

# exit the container
git pull
# remove rc files generated by the wrong environment variable
rm -f .apollo.bazelrc
# restart a new container
bash docker/scripts/dev_start.sh
bash docker/scripts/dev_into.sh

and recompile

from apollo.

export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/cuda-11.4/targets/aarch64-linux/include/
export TF_NEED_CUDA=1
export GPU_PLATFORM=NVIDIA

from apollo.