package/busybox/extract_config.sh

   1 #!/bin/bash
   2
   3 [[ -d "$1" ]] || {
   4         echo "Usage: $(basename $0) <busybox_sourcedir>"
   5         exit 1
   6 }
   7
   8 bbsrc="$(realpath $1)"
   9 cd $(dirname $0)
  10
  11 [[ -e config.new ]] && {
  12         echo -n "config.new exists already. delete? [y|n] "
  13         read ans
  14         case "$ans" in
  15         y|Y)
  16                 rm -rf config.new
  17                 ;;
  18         n|N)
  19                 ;;
  20         *)
  21                 echo "what is '$ans'?"
  22                 exit 1
  23         esac
  24 }
  25 mkdir -p config.new
  26
  27 # store config paths relative to $bbsrc into an array
  28 readarray -t configs <<< $(cd "$bbsrc"; find . -type f -name Config.in)
  29
  30 # copy each config into config.new
  31 for config in "${configs[@]}"; do
  32         mkdir -p config.new/$(dirname $config)
  33         cp "$bbsrc/$config" "config.new/$config"
  34 done
  35
  36 # store defined config symbols into an array
  37 readarray -t symbols <<< $(grep -hr '^config ' config.new | cut -d' ' -f2)
  38
  39 ### customize busybox config system for OpenADK
  40
  41 cd config.new
  42
  43 # no extra mainmenu, allow replacing PREFIX
  44 sed -i -e 's/^mainmenu/# mainmenu/' -e 's,./_install,@IDIR@,' Config.in
  45
  46 # prefix all symbols with BUSYBOX_ to create a namespace
  47 # limit replacement to lines containing given keywords to
  48 # not mess up help texts and prompts too much
  49 keywords='\(config\|depends\|range\|select\|default\|^if \)'
  50 sympipe=$(IFS='|'; echo "${symbols[*]}" | sed -e 's/|/\\|/g')
  51 sympipe_s='/'$keywords'/s/\b\('$sympipe'\)\b/BUSYBOX_\1/g'
  52
  53 # fix path of all sourced files
  54 source_s='s,^\(source *\)\([^ ]*\)$,\1package/busybox/config/\2,'
  55
  56 sed -i -e "$sympipe_s" -e "$source_s" "${configs[@]}"