3 # Copyright (C) 2002, 2003, 2009, 2010 Free Software Foundation, Inc.
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)
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.
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/>.
21 if test ${#} -lt 2 ||
test $1 = '--help'; then
22 echo "Usage: extract_symvers shared_lib output_file" 1>&2
29 # This avoids weird sorting problems later.
39 # Sun ld doesn't record symbol versions in .dynsym entries and they
40 # cannot easily be extracted from readelf --versions output, so use pvs
41 # instead. Linux may have a completely different pvs from LVM2, so only
43 # Need to use nawk on Solaris 2 since Solaris 8/9 awk (oawk) cannot handle
46 nawk
'# Remove colon separator from version field, trailing semicolon.
51 # Record base version. The [BASE] field was only added in Solaris 11,
52 # so simply use the first record instead.
57 # Ignore version dependencies.
62 if ($3 == $4 || $3 == basever)
63 # Emit versions or symbols bound to base versions as objects.
64 printf "OBJECT:0:%s\n", $4;
66 # Everything else without a size field is a function.
67 printf "FUNC:%s@@%s\n", $4, $3;
72 # Strip parens from object size.
75 printf "OBJECT:%s:%s@@%s\n", $5, $4, $3;
77 }' |
sort |
uniq > $tmp 2>&1
80 # GNU binutils, somewhere after version 2.11.2, requires -W/--wide to
81 # avoid default line truncation. -W is not supported and truncation did
82 # not occur by default before that point.
83 readelf
="readelf --symbols"
84 if readelf
--help |
grep -- --wide > /dev
/null
; then
85 readelf
="$readelf --wide"
88 sed -e 's/ \[<other>: [A-Fa-f0-9]*\] //' -e '/\.dynsym/,/^$/p;d' |\
89 egrep -v ' (LOCAL|UND) ' |\
90 awk '{ if ($4 == "FUNC" || $4 == "NOTYPE")
91 printf "%s:%s\n", $4, $8;
92 else if ($4 == "OBJECT" || $4 == "TLS")
93 printf "%s:%s:%s\n", $4, $3, $8;
94 }' |
sort |
uniq > $tmp 2>&1
95 # else printf "Huh? What is %s?\n", $8;
99 # I think we'll be doing some more with this file, but for now, dump.