GetOptions(
      't=s' => \ our $target,
      'b=s' => \ our $buildtype,
      'r=s' => \ @releases
  );

##</code><code>##

    -r foo bar baz -b dog cat -t pony

##</code><code>##

use Getopt::Long;

our @releases;
GetOptions(
      't=s' => \ our $target,
      'b=s' => \ our $buildtype,
      'r=s' => \ @releases
);

print "Target: $target\n";
print "Buildtype: $buildtype\n";
print "Releases: @releases\n";
print "ARGV: @ARGV\n";
__END__
Target: pony
Buildtype: dog
Releases: foo
ARGV: bar baz cat