build.sh

#!/usr/bin/env bash

# from https://www.digitalocean.com/community/tutorials/how-to-build-go-executables-for-multiple-platforms-on-ubuntu-16-04

package=$1
if [[ -z "$package" ]]; then
  echo "usage: $0 <package-name>"
  exit 1
fi
package_split=(${package//\// })
package_name=${package_split[-1]}
	
# platforms=("linux/amd64" "windows/amd64" "windows/386" "darwin/amd64")
platforms=("linux/amd64" "windows/amd64" "darwin/amd64" "darwin/arm64")

for platform in "${platforms[@]}"
do
	platform_split=(${platform//\// })
	GOOS=${platform_split[0]}
	GOARCH=${platform_split[1]}
	output_name=$package_name'-'$GOOS'-'$GOARCH
	if [ $GOOS = "windows" ]; then
		output_name+='.exe'
	fi

	echo "building $output_name"

	# env GOOS=$GOOS GOARCH=$GOARCH go build -o $output_name $package
	env GOOS=$GOOS GOARCH=$GOARCH go build -o $output_name 
	if [ $? -ne 0 ]; then
   		echo 'An error has occurred! Aborting the script execution...'
		exit 1
	fi
done