src/stripper

   1 #!/usr/bin/env bash
   2
   3 dirs=""
   4 excludes="/dev /proc /sys /run"
   5
   6 while [ $# -gt 0 ]; do
   7         case "${1}" in
   8                 --exclude=*)
   9                         excludes="${excludes} ${1#*=}"
  10                         ;;
  11                 *)
  12                         dirs="${dirs} ${1}"
  13                         ;;
  14         esac
  15         shift
  16 done
  17
  18 function _strip() {
  19         local file=${1}
  20         local strip="${STRIP-strip}"
  21
  22         local exclude l
  23         for exclude in ${excludes}; do
  24                 l=${#exclude}
  25                 if [ "${file:0:${l}}" = "${exclude}" ]; then
  26                         return 0
  27                 fi
  28         done
  29
  30         local cmd=( "${strip}" )
  31
  32         case "$(file -bi ${file})" in
  33                 application/x-archive*)
  34                         cmd+=( "--strip-debug" "--remove-section=.comment" "--remove-section=.note" )
  35                         ;;
  36                 *)
  37                         cmd+=( "--strip-all" )
  38                         ;;
  39         esac
  40
  41         echo "Stripping ${file}..."
  42         ${cmd[*]} ${file}
  43 }
  44
  45 for dir in ${dirs}; do
  46         # Strip shared objects.
  47         find ${dir} -type f \( -perm -0100 -or -perm -0010 -or -perm -0001 \) \
  48                 | file -N -f - | sed -n -e 's/^\(.*\):[   ]*.*ELF.*, not stripped.*/\1/p' |
  49                 while read file; do
  50                         _strip ${file} || exit $?
  51                 done || exit $?
  52
  53         # Strip static archives.
  54         find ${dir} -name \*.a -a -exec file {} \; \
  55                 | grep 'current ar archive' | sed -n -e 's/^\(.*\):[    ]*current ar archive/\1/p' |
  56                 while read file; do
  57                         _strip ${file} || exit $?
  58                 done || exit $?
  59 done