Re: RFC: linux compatibility

[DJ Delorie <dj at delorie dot com>]

> 1.  POSIX compliant, if for no other reason than it's the right thing to do.

We already have this as a goal.  However, POSIX doesn't cover
everything.  Plus, Linux also has POSIX as a goal.  Downside: the
POSIX specs are expensive to purchase and not available online.

> 2.  "GNU compliant", by which I mean essentially that anything that links
> and runs with glibc should work with Cygwin.

Linux already uses glibc (at least, Red Hat Linux does), so tracking
linux gets us this already.  However, there may be some things that
glibc supports that are fundamentally impossible under Windows.  I
can't think of any off-hand, though.

> 3.  "Other-Unii compatible", meaning that aything that can be added
> to the Cygwin mix that doesn't violate the above and yet allows it
> to be more compatible with other distributions should be added.

Right.  My suggestion is that Linux be the "other Unix" we've chosen
to be compatible with.  It's much easier to say "it's just like Linux"
than to say "this part is like Linux, but this part is like IRIX, and
this part is like Solaris".

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