libstdc++-v3/scripts/extract_symvers

   1 #!/bin/sh
   2
   3 # Copyright (C) 2002, 2003 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 2, 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 COPYING.  If not, write to the Free
  18 # Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 # USA.
  20 #
  21 # As a special exception, you may use this file as part of a free software
  22 # library without restriction.  Specifically, if other files instantiate
  23 # templates or use macros or inline functions from this file, or you compile
  24 # this file and link it with other files to produce an executable, this
  25 # file does not by itself cause the resulting executable to be covered by
  26 # the GNU General Public License.  This exception does not however
  27 # invalidate any other reasons why the executable file might be covered by
  28 # the GNU General Public License.
  29
  30
  31 if test ${#} -lt 2 || test $1 = '--help'; then
  32   echo "Usage:  extract_symvers  shared_lib output_file" 1>&2
  33   exit 1
  34 fi
  35
  36 lib=$1
  37 output=$2
  38
  39 # GNU binutils, somewhere after version 2.11.2, requires -W/--wide to avoid
  40 # default line truncation.  -W is not supported and truncation did not occur
  41 # by default before that point.
  42 readelf="readelf --symbols"
  43 if readelf --help | grep -- --wide > /dev/null; then
  44     readelf="$readelf --wide"
  45 fi
  46
  47 # This avoids weird sorting problems later.
  48 LC_ALL=C
  49 export LC_ALL
  50 LANG=C
  51 export LANG
  52
  53 tmp=extract.$$
  54
  55 ${readelf} ${lib} | sed '/\.dynsym/,/^$/p;d' | egrep -v ' (LOCAL|UND) ' |\
  56 awk '{ if ($4 == "FUNC" || $4 == "NOTYPE")
  57          printf "%s:%s\n", $4, $8;
  58        else if ($4 == "OBJECT")
  59          printf "%s:%s:%s\n", $4, $3, $8;
  60      }' | sort | uniq > $tmp 2>&1
  61 #       else printf "Huh?  What is %s?\n", $8;
  62
  63
  64 # I think we'll be doing some more with this file, but for now, dump.
  65 mv $tmp $output
  66
  67 exit 0