recipes-kernel/linux/files/gbmc-delta-kconfig.sh

#!/bin/bash
# Determines if all of the pieces of the config fragments end up in the final Kconfig
#   gbmc-delta-kconfig.sh <full .config> <config fragments ...>
cfg_to_dict() {
  local -n dict="$1"
  shift

  local line
  local larr
  while read -r line; do
    larr=($line)
    if [[ $larr == '#' ]]; then
      if [[ "$line" == *' is not set' ]]; then
        dict[${larr[1]}]='n'
      fi
    else
      dict[${larr[0]}]=${larr[1]}
    fi
  done < <(cat "$@" | grep '^\(# \)\?CONFIG_' | tr '=' ' ')
}
declare -A mat
cfg_to_dict mat "$1"
shift
declare -A exp
cfg_to_dict exp "$@"
rc=0
for key in "${!exp[@]}"; do
  if [[ ${mat[$key]} != ${exp[$key]} ]]; then
    echo "Expected $key=${exp[$key]} got ${mat[$key]}"
    rc=1
  fi
done
exit $rc