I have a script that I would like to use across several UNIX platforms + Win32. I would like to use the same source on both. The problem is code like this.

sub readConfig {
    if ($^O eq "MSWin32") {
        use Win32::TieRegistry;
        # read some stuff from registry
    } else {
        open (CONFIG, '/etc/something') or die "$!:Blech\n";
        # read some config info in
    }
    return "something important";
}
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That work's but on Solaris you need to have the Win32 module installed. I have dreamed up the following options.

1) Use C preprocessor and #ifdef out the win32 code as a build step, when packaging the code. Blech.

2) Create a Win32::TieRegistry module with a "1;" on non Win32 platforms.

3) ?

Any ideas?