There's no reason to have all that code in a string. Create two modules with the same interface, one that works on Windows, one that works elsewhere. Load the appropriate module. 
my $device_pkg = $^O =~ /Win32/
   ? 'My::SerialPort::Win32'
   : 'My::SerialPort::Linux';

eval "require $device_pkg" or die $@;

my $device = $device_pkg->new();
$device->do_something();

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In reply to Re: code that runs (and works) on both Linux and Win32 by ikegami
in thread code that runs (and works) on both Linux and Win32 by pashanoid

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