Darwin Version

[Ryan Schmidt]

On Oct 6, 2015, at 10:41 AM, Richard L. Hamilton wrote:

> Unix was originally a name for an operating system, and unofficially for a code lineage of variants derived from it.
> 
> It is now a trademark that can be granted to any OS meeting the current Single Unix Specification testing, and where the OS owner has paid for permission to use the trademark.
> 
> https://en.wikipedia.org/wiki/Single_UNIX_Specification
> 
> According to that, no Linux implementation has been formally put through the tests.  (presumably possible if the $$ were spent, although possibly not without some changes)
> 
> At least one of the OS's listed (z/OS) as qualified for the Unix trademark, is something else entirely in origin, but has had compatibility features added to achieve compliance, although MVS (predecessor of z/OS) lineage mainframe software that is not remotely written for a Unix OS still exists and can still be developed too.
> 
> Perhaps more commonly, mainframes running the virtualization host OS z/VM can host many Linux guest VMs.

Let's let this thread end now. We have explained to the original poster to the best of our ability why he encountered the problem he encountered and why MacPorts behaves the way it does. And the OS history discussions are off-topic. Users subscribe to this list to discuss using MacPorts so let's get back to talking about that.