On: Windows game developer about porting to and using OS X

[collyw]

What does this atually mean (when compared to Linux, which is a UNIX clone)? That they have paid someone for a certificate? Is it more than that?

[pjmlp → collyw]

It means you can be sure that the APIs described here exist, with at least the set of specified arguments and behaviors.

http://www.opengroup.org/standards/unix

For example, http://pubs.opengroup.org/onlinepubs/9699919799/

However, just like C, any certified implementation is free to add extra behaviors and there are certain parts that are actually implementation specific, like how signal handlers behave in certain situations.

[ahoka → collyw]

Yes, it means that someone payed money for a useless certificate. Nothing more, nothing less.

BTW, Linux is UNIX too!

http://www.opengroup.org/openbrand/register/brand3596.htm https://en.wikipedia.org/wiki/Inspur_K-UX

[pjmlp → ahoka]

So all APIs provided by all Linux distributions fully support the POSIX specification to the smallest detail?

[ahoka → pjmlp]

Maybe after some nonsense like "export POSIXLY_CORRECT" and defining a few macros.

[pjmlp → ahoka]

Which means it isn't actually a proper UNIX out of the box.

[ahoka → pjmlp]

Verdict: no true scotsman is true unix.

[tpush → ahoka]

"POSIX_ME_HARDER"

[raverbashing → ahoka]

Yes, the certificate is useless

Unfortunately some people will only sign big cheques if the given useless certificate is present

[simonh → raverbashing]

Hey, before you call certificates like that 'useless' just think of the thousands of government jobs that depend on them!