libstdc++-v3/scripts/extract_symvers

   1 #!/bin/sh
   2
   3 # Copyright (C) 2002, 2003, 2009 Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU ISO C++ Library.  This library is free
   6 # software; you can redistribute it and/or modify it under the
   7 # terms of the GNU General Public License as published by the
   8 # Free Software Foundation; either version 3, or (at your option)
   9 # any later version.
  10 #
  11 # This library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along
  17 # with this library; see the file COPYING3.  If not see
  18 # <http://www.gnu.org/licenses/>.
  19
  20
  21 if test ${#} -lt 2 || test $1 = '--help'; then
  22   echo "Usage:  extract_symvers  shared_lib output_file" 1>&2
  23   exit 1
  24 fi
  25
  26 lib=$1
  27 output=$2
  28
  29 # GNU binutils, somewhere after version 2.11.2, requires -W/--wide to avoid
  30 # default line truncation.  -W is not supported and truncation did not occur
  31 # by default before that point.
  32 readelf="readelf --symbols"
  33 if readelf --help | grep -- --wide > /dev/null; then
  34     readelf="$readelf --wide"
  35 fi
  36
  37 # This avoids weird sorting problems later.
  38 LC_ALL=C
  39 export LC_ALL
  40 LANG=C
  41 export LANG
  42
  43 tmp=extract.$$
  44
  45 ${readelf} ${lib} |\
  46 sed -e 's/ \[<other>: [A-Fa-f0-9]*\] //' -e '/\.dynsym/,/^$/p;d' |\
  47 egrep -v ' (LOCAL|UND) ' |\
  48 awk '{ if ($4 == "FUNC" || $4 == "NOTYPE")
  49          printf "%s:%s\n", $4, $8;
  50        else if ($4 == "OBJECT")
  51          printf "%s:%s:%s\n", $4, $3, $8;
  52      }' | sort | uniq > $tmp 2>&1
  53 #       else printf "Huh?  What is %s?\n", $8;
  54
  55
  56 # I think we'll be doing some more with this file, but for now, dump.
  57 mv $tmp $output
  58
  59 exit 0