I have a Windows-only module on CPAN (exact opposite of your case) but I do the "same", test if it's Windows and then the version of Windows. I do it in the Makefile.PL since the module is completely useless on *nix:

# Only supported on Win32
unless ($^O eq "MSWin32" || $^O eq "cygwin") {
    die "OS unsupported\n"
}

# Must be Win32 version greater than 5
#   _WIN32_WINNT must be defined as greater than 5 for 
#   LockWorkStation prototype to be defined in winuser.h.
my $ver = `ver`;
$ver =~ / ([\d\.]+)/;
$ver = $1;

if ($ver < 5) {
    die "OS unsupported\n  Windows version must be greater than 5.\n  
+Found '$ver' with the 'ver' command."
}

WriteMakefile(
[...]

[download]

If you don't want to preemptive test in the Makefile.PL, you can use SKIP in the tests after determining OS is Windows to skip over tests that won't make sense / fail.

In reply to Re: Tests on Windows for Unix-only module by VinsWorldcom
in thread Tests on Windows for Unix-only module by mikosullivan

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