1 # Generate an ELF symbol version map a-la Solaris and GNU ld.
2 # Contributed by Richard Henderson <rth@cygnus.com>
4 # This file is part of GCC.
6 # GCC is free software; you can redistribute it and/or modify it under
7 # the terms of the GNU General Public License as published by the Free
8 # Software Foundation; either version 2, or (at your option) any later
11 # GCC is distributed in the hope that it will be useful, but WITHOUT
12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 # License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with GCC; see the file COPYING. If not, write to the Free
18 # Software Foundation, 59 Temple Place - Suite 330, Boston MA
26 # Remove comment and blank lines.
31 # We begin with nm input. Collect the set of symbols that are present
32 # so that we can not emit them into the final version script -- Solaris
33 # complains at us if we do.
35 state == "nm" && /^%%/ {
40 state == "nm" && ($1 == "U" || $2 == "U") {
44 state == "nm" && NF == 3 {
54 # Now we process a simplified variant of the Solaris symbol version
55 # script. We have one symbol per line, no semicolons, simple markers
56 # for beginning and ending each section, and %inherit markers for
57 # describing version inheritence. A symbol may appear in more than
58 # one symbol version, and the last seen takes effect.
60 NF == 3 && $1 == "%inherit" {
65 NF == 2 && $2 == "{" {
84 print "No symbols seen -- broken or mis-installed nm?" | "cat 1>&2";
91 function output(lib) {
100 if ((ver[sym] == lib) && (sym in def))
104 printf("%s {\n", lib);
105 printf(" global:\n");
108 printf("\t%s;\n", sym);
110 printf("\t.%s;\n", sym);
116 if (inherit[l] == lib)
117 inherit[l] = inherit[lib];
119 else if (inherit[lib])
120 printf("} %s;\n", inherit[lib]);
122 printf ("\n local:\n\t*;\n};\n");