1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
# Generate an ELF symbol version map a-la Solaris and GNU ld.
# Contributed by Richard Henderson <rth@cygnus.com>
#
# This file is part of GNU CC.
#
# GNU CC 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 2, or (at your option)
# any later version.
#
# GNU CC 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 GNU CC; see the file COPYING. If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston MA 02111-1307, USA.
BEGIN {
state = "nm";
}
# Remove comment and blank lines.
/^ *#/ || /^ *$/ {
next;
}
# We begin with nm input. Collect the set of symbols that are present
# so that we can not emit them into the final version script -- Solaris
# complains at us if we do.
state == "nm" && /^%%/ {
state = "ver";
next;
}
state == "nm" && ($1 == "U" || $2 == "U") {
next;
}
state == "nm" && NF == 3 {
def[$3] = 1;
next;
}
state == "nm" {
next;
}
# Now we process a simplified variant of the Solaris symbol version
# script. We have one symbol per line, no semicolons, simple markers
# for beginning and ending each section, and %inherit markers for
# describing version inheritence. A symbol may appear in more than
# one symbol version, and the last seen takes effect.
NF == 3 && $1 == "%inherit" {
inherit[$2] = $3;
next;
}
NF == 2 && $2 == "{" {
libs[$1] = 1;
thislib = $1;
next;
}
$1 == "}" {
thislib = "";
next;
}
{
ver[$1] = thislib;
next;
}
END {
for (l in libs)
output(l);
}
function output(lib) {
if (done[lib])
return;
done[lib] = 1;
if (inherit[lib])
output(inherit[lib]);
printf("%s {\n", lib);
printf(" global:\n");
for (sym in ver)
if ((ver[sym] == lib) && (sym in def))
printf("\t%s;\n", sym);
if (inherit[lib])
printf("} %s;\n", inherit[lib]);
else
printf ("\n local:\n\t*;\n};\n");
}
|
