#!/bin/sh

#

# Script to make an offline archive for debugging with libdwfl-based tools.

#

#	make-debug-archive ARCHIVE {options}

#	make-debug-archive --kernel [--force] [RELEASE]

#

# Valid options are those listed under 'Input selection options'

# by running @UNSTRIP@ --help.

#

# The archive installed by --kernel be used automatically by -K.

# An offline archive can be used via -e in any tool that accepts those options.

#

UNSTRIP=${UNSTRIP:-@UNSTRIP@}

AR=${AR:-@AR@}

SUDO=${SUDO:-/usr/bin/sudo}

LS=/bin/ls

RM=/bin/rm

MV=/bin/mv

MKDIR=/bin/mkdir

XARGS=/usr/bin/xargs

outdir=${TMPDIR:-/tmp}/debugar$$

usage()

{

  echo "Usage: $0 ARCHIVE {options}"

  echo "   or: $0 --kernel [--sudo] [--force] [RELEASE]"

  echo

  echo "Valid options are listed under 'Input selection options'"

  echo "when running: $UNSTRIP --help"

  echo

  echo "The --kernel form updates the file used by -K if the"

  echo "kernel installation has changed, or always with --force."

  echo "With --sudo, touches the installed file via $SUDO."

}

fatal_usage()

{

  usage >&2

  exit 2

}

script_version()

{

  echo "`basename $0` (@PACKAGE_NAME@) @PACKAGE_VERSION@"

  echo "Copyright (C) 2007 Red Hat, Inc."

  echo "This is free software; see the source for copying conditions."

  echo "There is NO warranty; not even for MERCHANTABILITY or"

  echo "FITNESS FOR A PARTICULAR PURPOSE."

  echo "Written by Roland McGrath."

}

sudo=

kernel=no

force_kernel=no

while [ $# -gt 0 ]; do

  case "x$1" in

  x--help) usage; exit 0 ;;

  x--version) script_version; exit 0 ;;

  x--kernel) kernel=yes ;;

  x--force) force_kernel=yes ;;

  x--sudo) sudo=$SUDO ;;

  *) break ;;

  esac

  shift

done

if [ $kernel = no ] && [ $force_kernel = yes -o -n "$sudo" ]; then

  usage

fi

if [ $kernel = yes ]; then

  if [ $# -eq 0 ]; then

    release=`uname -r`

  elif [ $# -eq 1 ]; then

    release=$1

  else

    fatal_usage

  fi

  dir=/usr/lib/debug/lib/modules/$release

  archive=$dir/debug.a

  dep=/lib/modules/$release/modules.dep

  if [ ! -d $dir ]; then

    echo >&2 "$0: $dir not installed"

    exit 1

  fi

  # Without --force, bail if the kernel installation is not newer.

  # This file is normally touched by installing new kernels or modules.

  if [ $force_kernel = no -a "$archive" -nt "$dep" ]; then

    exit 0

  fi

  # We have to kill the old one first, because our own -K would use it.

  [ ! -e "$archive" ] || $sudo $RM -f "$archive" || exit

  set "$archive" "-K$release"

fi

if [ $# -lt 2 ]; then

  fatal_usage

fi

archive="$1"

shift

case "$archive" in

/*) ;;

*) archive="`/bin/pwd`/$archive" ;;

esac

if [ -z "$sudo" ]; then

  new_archive="$archive.new"

else

  new_archive="$outdir.a"

fi

$RM -f "$new_archive" || exit

trap '$RM -rf "$outdir" "$new_archive"' 0 1 2 15

$MKDIR "$outdir" &&

$UNSTRIP -d "$outdir" -m -a -R "$@" &&

(cd "$outdir" && $LS | $XARGS $AR cq "$new_archive") &&

$sudo $MV -f "$new_archive" "$archive"

exit