mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-23 12:56:51 +03:00
62 lines
1.7 KiB
Perl
Executable File
62 lines
1.7 KiB
Perl
Executable File
#!/usr/bin/perl
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# Copyright (c) 2003, Pavel Roskin
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# The Midnight Commander is free software: you can redistribute it
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# and/or modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation, either version 3 of the License,
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# or (at your option) any later version.
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#
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# The Midnight Commander is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Run this script on the map with cross-reference generated by GNU ld,
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# and it will generate a list of symbols that don't need to be global.
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# To create the map, run something like this:
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# make LDFLAGS=-Wl,-Map,output.map,--cref
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use strict;
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my %symbols;
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my %syms;
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my %objs;
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if ($#ARGV != 0) {
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print "Usage: unrefglobals.pl mapfile\n";
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exit 1;
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}
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if (!open (MAP, "$ARGV[0]")) {
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print "Cannot open file \"$ARGV[0]\"\n";
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exit 1;
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}
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my $line;
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my $next_line = <MAP>;
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while (1) {
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last unless $next_line;
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$line = $next_line;
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$next_line = <MAP>;
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next unless ($line =~ m{^[A-Za-z_][A-Za-z0-9_]* +[^ /][^ ]+\.o$} or
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$line =~ m{^[A-Za-z_][A-Za-z0-9_]* +[^ /][^ ]+\.a\([^ ]+\.o\)$});
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if (!$next_line or ($next_line !~ /^ /)) {
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my @arr = split (' ', $line);
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$symbols{$arr[0]} = $arr[1];
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$syms{$arr[0]} = 1;
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$objs{$arr[1]} = 1;
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}
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}
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close(MAP);
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foreach my $obj (sort keys %objs) {
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print "$obj\n";
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foreach my $sym (sort keys %syms) {
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print "\t$sym\n" if ($symbols{$sym} eq $obj);
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}
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}
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