#!/usr/bin/perl

use strict;
use warnings;
use Getopt::Long;

GetOptions(
    'o=s' => \my $output,
);

my @ALLARCH=qw{
    noarch
    @RPMALLARCH@
};

my $anysuffix = '-.*-@RPMOS@';
my $suffix = '-@RPMCANONVENDOR@-@RPMOS@-gnu';
my $canonarch = $ARGV[0] || `uname -m`;
chomp($canonarch);

my $houtput;
if ($output && $output ne '-') {
    open($houtput, '>', $output) or die "Cannot open `$output': $!\n";
} else {
    $houtput = *STDOUT;
}

foreach my $suf ($suffix, $anysuffix) {
    my $found = 0;
    my %done = ();
    foreach my $arch (reverse @ALLARCH) {
        $arch eq $canonarch and $found = 1;
        $found or next;
        $done{$arch} and next;
        $done{$arch} = 1;
        print $houtput "$arch$suf\n";
    }
}

close($houtput) if ($houtput);