libvirt/src/check-symfile.pl
Daniel P. Berrange 536a1d7d0a Add a test case that checks there are no bogus entries in .syms
During refactoring of code, it has proved common to forget to
remove old symbols from the .syms file. While the Win32 linker
will complain about this, the Linux ELF linker does not. The
new test case validates that every symbol listed in the .syms
file actually exists in the built ELF libraries.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-07-27 10:54:38 +01:00

55 lines
931 B
Perl
Executable File

#!/usr/bin/perl
die "syntax: $0 SYMFILE ELFLIB(S)" unless int(@ARGV) >= 2;
my $symfile = shift @ARGV;
my @elflibs = @ARGV;
my @wantsyms;
my %gotsyms;
# Skip on non-linux
if ($^O ne "linux") {
return 77; # Automake's skip code
}
open SYMFILE, $symfile or die "cannot read $symfile: $!";
while (<SYMFILE>) {
next if /{/;
next if /}/;
next if /global:/;
next if /local:/;
next if /^\s*$/;
next if /^\s*#/;
next if /\*/;
die "malformed line $_" unless /^\s*(\S+);$/;
push @wantsyms, $1;
}
close SYMFILE;
foreach my $elflib (@elflibs) {
open NM, "-|", "nm", $elflib or die "cannot run 'nm $elflib': $!";
while (<NM>) {
next unless /^\S+\s(?:T|D)\s(\S+)\s*$/;
$gotsyms{$1} = 1;
}
close NM;
}
my $ret = 0;
foreach my $sym (@wantsyms) {
next if exists $gotsyms{$sym};
print STDERR "Expected symbol $sym is not in ELF library\n";
$ret = 1;
}
exit($ret);