#!/usr/bin/env perl
use strict;
use warnings;
open my $fh, '<:raw', 'Makefile'
    or die "can't open Makefile: $!\n";
my $dist;
my $suffix;
while (my $line = readline $fh) {
    chomp $line;
    if ($line =~ /^DISTVNAME\s*=\s*(.*)/) {
        $dist = $1;
    }
    elsif ($line =~ /^SUFFIX\s*=\s*(.*)/) {
        $suffix = $1;
    }
    if (defined $dist && $suffix) {
        last;
    }
}
print "$dist.tar$suffix";