dex/scripts/get-protoc

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#!/bin/bash -e
# This is a script to download protoc. Rather than depending on the version on
# a developer's machine, always download a specific version.
VERSION="3.1.0"
if [ $# -ne 1 ]; then
echo "Usage: ./get-protoc [dest]"
exit 2
fi
# Use the go tool to determine OS.
OS=$( go env GOOS )
if [ "$OS" = "darwin" ]; then
OS="osx"
fi
mkdir -p bin
# TODO(ericchiang): Architectures other than amd64?
ZIP="protoc-${VERSION}-${OS}-x86_64.zip"
URL="https://github.com/google/protobuf/releases/download/v${VERSION}/${ZIP}"
wget ${URL}
# Unpack the protoc binary. Later we might want to grab additional data.
unzip -p ${ZIP} bin/protoc > $1
chmod +x $1
rm ${ZIP}