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Peter Shenkin wrote:

> I've worked on not only VMS, but also CMS.  If you want
> your code to issue system calls in these, and UNIX, too,
> you have to have some sort of conditional compilation
> mechanism.

Ah, but that's a different question - yes, you have to conditionalize
calls to interfaces of different OS's - but that's true in any language,
unless you have a compatibility layer.

Now, surely, you can have a Unix layer on almost anything (Cygwin is a
popular one on Microsoft Windows OS's).

--
Toon Moene - mailto:[log in to unmask] - phoneto: +31 346 214290
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