if (-e "myfilepath/test1.conf") {
    require "myfilepath/test1.conf" or die("myfilepath/test1.conf - $!\n");
}
else {
    die("Missing provider config file: myfilepath/test1.conf\n");
}

$header_map = &get_config;

# grab a file to parse
while (defined(my $line = <FILE>)) {
    my $second_file = &compare();
    # split $line into the header
    if ($first_file{test} =~ /$seconf_file{test}/i) {
        # etc....
    }
}

sub compare {
    if (-e "myfilepath/test2.conf") {
        require "myfilepath/test2.conf" or die("myfilepath/test2.conf - $!\n");
    }
    else {
        die("Missing provider config file: myfilepath/test2.conf\n");
    }
    $header_map_2 = &get_config;

    # grab a file to parse
    while (defined(my $line = <FILE>)) {
        # split $line into the header
    }
    return "$parsed_line";
}