3 # Copyright (C) 2002, 2003, 2009 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 $1 = '--help'; then
22 echo "Usage: extract_symvers shared_lib output_file" 1>&2
29 # Sun ld doesn't record symbol versions in .dynsym entries and they cannot
30 # easily be extracted from readelf --versions output, so use pvs instead.
31 if type pvs 2>&1 | grep 'not found' > /dev/null; then
37 # GNU binutils, somewhere after version 2.11.2, requires -W/--wide to avoid
38 # default line truncation. -W is not supported and truncation did not occur
39 # by default before that point.
40 readelf="readelf --symbols"
41 if readelf --help | grep -- --wide > /dev/null; then
42 readelf="$readelf --wide"
45 # This avoids weird sorting problems later.
53 # Prefer pvs if found. Need to use nawk on Solaris 2 since Solaris 8/9 awk
54 # (oawk) cannot handle sub.
55 if [ -n ${pvs} ]; then
57 nawk '# Remove colon separator from version field, trailing semicolon.
62 # Record base version. The [BASE] field was only added in Solaris 11,
63 # so simply use the first record instead.
68 # Ignore version dependencies.
73 if ($3 == $4 || $3 == basever)
74 # Emit versions or symbols bound to base versions as objects.
75 printf "OBJECT:0:%s\n", $4;
77 # Everything else without a size field is a function.
78 printf "FUNC:%s@@%s\n", $4, $3;
83 # Strip parens from object size.
86 printf "OBJECT:%s:%s@@%s\n", $5, $4, $3;
88 }' | sort | uniq > $tmp 2>&1
91 sed -e 's/ \[<other>: [A-Fa-f0-9]*\] //' -e '/\.dynsym/,/^$/p;d' |\
92 egrep -v ' (LOCAL|UND) ' |\
93 awk '{ if ($4 == "FUNC" || $4 == "NOTYPE")
94 printf "%s:%s\n", $4, $8;
95 else if ($4 == "OBJECT")
96 printf "%s:%s:%s\n", $4, $3, $8;
97 }' | sort | uniq > $tmp 2>&1
98 # else printf "Huh? What is %s?\n", $8;
102 # I think we'll be doing some more with this file, but for now, dump.