elf/ldd.sh.in

   1 #! /bin/sh
   2
   3 # This is the `ldd' command, which lists what shared libraries are
   4 # used by given dynamically-linked executables.  It works by invoking the
   5 # run-time dynamic linker as a command and giving it the special `--list'
   6 # switch.
   7
   8 RTLD=@RTLD@
   9
  10 case $# in
  11 0)
  12   echo >&2 "Usage: $0 FILE..."
  13   exit 1 ;;
  14 1)
  15   # We don't list the file name when there is only one.
  16   case "$1" in
  17   /*) file="$1" ;;
  18   *) file="./$1" ;;
  19   esac
  20   if ${RTLD} --verify "$file"; then
  21     LD_TRACE_LOADED_OBJECTS=1 exec ${RTLD} "$file" && exit 1
  22   else
  23     echo '      not a dynamic executable'
  24   fi
  25   exit ;;
  26 *)
  27   set -e        # Bail out immediately if ${RTLD} loses on any argument.
  28   for file; do
  29     echo "${file}:"
  30     case "$file" in
  31     /*) file="$file" ;;
  32     *) file="./$file" ;;
  33     esac
  34     if ${RTLD} --verify "$file"; then
  35       LD_TRACE_LOADED_OBJECTS=1 ${RTLD} "$file"
  36     else
  37       echo '    not a dynamic executable'
  38     fi
  39   done
  40 esac
  41
  42 exit 0