Generate the build dependencies for ONNX

Generate the ONNX protobuf source files

The Arm NN ONNX parser requires the ONNX protobuf source files. Generate these source files based on the ONNX message formats defined in the onnx.proto library.

Use the following commands generate the and onnx.pb.h source files in the $BASEDIR/onnx directory ready for the Arm NN build:

$ export ONNX_ML=1 #To clone ONNX with its ML extension
$ git clone --recursive
$ unset ONNX_ML
$ cd onnx
$ git checkout 553df22c67bee5f0fe6599cff60f1afc6748c635
$ export LD_LIBRARY_PATH=$BASEDIR/protobuf-host/lib:$LD_LIBRARY_PATH
$ $BASEDIR/protobuf-host/bin/protoc onnx/onnx.proto --proto_path=. --proto_path=$BASEDIR/protobuf-host/include --cpp_out $BASEDIR/onnx

For more information and instructions, see the ONNX GitHub.

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