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#!/bin/sh

# Copyright (C) 2002, 2003, 2009, 2010 Free Software Foundation, Inc.

#

# This file is part of the GNU ISO C++ Library.  This library 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.

#

# This library 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 this library; see the file COPYING3.  If not see

# .

if test ${#} -lt 2 || test $1 = '--help'; then

  echo "Usage:  extract_symvers  shared_lib output_file" 1>&2

  exit 1

fi

lib=$1

output=$2

# This avoids weird sorting problems later.

LC_ALL=C

export LC_ALL

LANG=C

export LANG

tmp=extract.$$

case `uname -s` in

SunOS)

  # Ensure that output on Solaris 2 matches readelf below without requiring

  # GNU binutils to be installed.  This requires a combination of pvs and

  # elfdump, which is easier handled in a perl script.

  perl @glibcxx_srcdir@/scripts/extract_symvers.pl ${lib} > $tmp 2>&1

  ;;

*)

  # GNU binutils, somewhere after version 2.11.2, requires -W/--wide to

  # avoid default line truncation.  -W is not supported and truncation did

  # not occur by default before that point.

  readelf="readelf --symbols"

  if readelf --help | grep -- --wide > /dev/null; then

    readelf="$readelf --wide"

  fi

  ${readelf} ${lib} |\

  sed -e 's/ \[: [A-Fa-f0-9]*\] //' -e '/\.dynsym/,/^$/p;d' |\

  egrep -v ' (LOCAL|UND) ' |\

  sed -e 's/ : / :_/g' |\

  sed -e 's/ : / :_/g' |\

  sed -e 's/ : / :_/g' |\

  awk '{ if ($4 == "FUNC" || $4 == "NOTYPE")

           printf "%s:%s\n", $4, $8;

         else if ($4 == "OBJECT" || $4 == "TLS")

           printf "%s:%s:%s\n", $4, $3, $8;

       }' | sort | uniq > $tmp 2>&1

#        else printf "Huh?  What is %s?\n", $8;

  ;;

esac

# I think we'll be doing some more with this file, but for now, dump.

mv $tmp $output

exit 0