trezor-firmware/tools/build_pb.sh

#!/bin/bash
CURDIR=$(pwd)

for i in types messages storage ; do
    # Compile .proto files to python2 modules using google protobuf library
    cd $CURDIR/../../trezor-common/protob
    protoc --python_out=$CURDIR/pb2/ -I/usr/include -I. $i.proto

    # Convert google protobuf library to trezor's internal format
    cd $CURDIR
    ./pb2py $i ../src/trezor/messages/
done