Find blobs in the factory android vendor partition that duplicate blobs in AOSP by examining build errors.

find_duplicate_blobs.sh

device="coral"
set -x

while true; do
  duplicate=$( \
  	 make DEVICE=${device} build \
  	 | grep -A1 'FAILED:' \
  	 | grep 'error:' \
  	 | awk -F"', previously defined" '{print $1}' \
  	 | awk -F"out/target/product/${device}/" '{print $2}' \
  )
  [[ -z "${duplicate}" ]] && break
  duplicate_base=$(printf "%s" "${duplicate}" | sed 's/.*\///')
  sed -i "\:$duplicate_base:d" \
	build/base/vendor/google_devices/${device}/${device}-vendor-blobs.mk
  echo "Found duplicate: ${duplicate}"
  echo "$duplicate" | tee -a duplicates.txt
done