#! /bin/sh

# Compare stripped copies of two given object files.

# Copyright (C) 2007 Free Software Foundation
# Originally by Alexandre Oliva <aoliva@redhat.com>

# This file is part of GCC.

# GCC is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.

# GCC is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
# License for more details.

# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

rm='rm -f'

case $1 in
-p | --preserve)
  rm='echo preserving'
  shift
  ;;
esac

if test $# != 2; then
  echo 'usage: compare-debug file1.o file2.o' >&2
  exit 1
fi

if test ! -f "$1"; then
  echo "$1" does not exist >&2
  exit 1
fi

if test ! -f "$2"; then
  echo "$2" does not exist >&2
  exit 1
fi

suf1=stripped
while test -f "$1.$suf1"; do
  suf1=$suf1.
done

suf2=stripped
while test -f "$2.$suf2"; do
  suf2=$suf2.
done

trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15

cp "$1" "$1.$suf1"
strip "$1.$suf1"

cp "$2" "$2.$suf2"
strip "$2.$suf2"

if cmp "$1.$suf1" "$2.$suf2"; then
  status=0
else
  status=1
fi

$rm "$1.$suf1" "$2.$suf2"

trap "exit $status; exit" 0 1 2 15

exit $status