linkerd2/bin/protoc

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#!/bin/sh
set -eu
if [ "$(uname -s)" = "Darwin" ]; then
os=osx
else
os=linux
fi
arch=$(uname -m)
protocbin=.protoc
protocversion=3.4.0
protocurl="https://github.com/google/protobuf/releases/download/v${protocversion}/protoc-${protocversion}-${os}-${arch}.zip"
if [ ! -f "$protocbin" ]; then
tmp=$(mktemp -d -t protoc.XXX)
(
cd "$tmp"
curl -L --silent --fail -o "$protocbin.zip" "$protocurl"
jar xf "$protocbin.zip"
chmod +x bin/protoc
)
mv "$tmp/bin/protoc" "$protocbin"
rm -rf "$tmp"
fi
./$protocbin "$@"