info_dir=/usr/share/info
info_files=(fftw3.info)

post_install() {
  [[ -x usr/bin/install-info ]] || return 0
  for f in ${info_files[@]}; do
    install-info ${info_dir}/$f.gz ${info_dir}/dir 2> /dev/null
  done
}

post_upgrade() {
        post_install
}

pre_remove() {
  [[ -x usr/bin/install-info ]] || return 0
  for f in ${info_files[@]}; do
    install-info --delete ${info_dir}/$f.gz ${info_dir}/dir 2> /dev/null
  done
}