Re: Differences Unixware/OpenServer/OpenUnix
From: Bill Campbell (bill_at_celestial.com)
Date: 10/31/05
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Date: Mon, 31 Oct 2005 09:13:04 -0800 To: sco-misc@lists.celestial.com
On Mon, Oct 31, 2005, Ian Wilson wrote:
>Lars Bausch wrote:
>>Ian Wilson wrote:
>>
...
>UnixWare is Novell's name for the ancestral Unix code acquired by The
>SCO Group (as Caldera) from the Santa Cruz Organisation (old SCO, now
>named Tarantella), who acquired it from Novell, who acquired it from
>Unix Systems Labs who were spun of from AT&T who originally developed
>Unix. (This is from memory so probably contains errors). Unixware is a
>reasonably modern Unix with many advanced features.
It remains to be seen what Old SCO got in their purchase from
Novell. Novell now claims that SCO never completed the deal to
actually get complete rights to the Unix code (and new SCO
currently owe Novell a huge amount of money for licensing fees
due under that contract).
...
>>>>Are there binary compatible ?
>>>
>>>s/there/they/
>>>Under limited circumstances yes, but in general assume not for almost
>>>all of the currently deployed population of each.
>>
>>Why ?
>>I see it under the aspect of porting a application.
>>
>
>There are many different types of binary. COFF, ELF, etc. Whilst
>Unixware, OpenServer5 and OpenUnix run on x86 platforms, they have
>different native binary formats. Some compatibility libraries exist. For
>example Linux used to have iBCS which would help with running OSR5
>binaries, but lacked proprietary SCO libraries that native SCO apps
>would usually make use of. Similarly I think UnixWare now has a
>compatibility layer for OSR5 binaries and there is the lxrun software
>that allows Linux binaries to run on UnixWare.
>
>Porting an application, to me means recompiling the source code on the
>target platform[1]. So binary compatibility is not needed.
The biggest obstacle to porting many applications that have run
for years on OpenServer is that the source code has long since
disappeared. We have one customer who is still running OSR 5.0.6a
only because their FilePro application uses 3rd party code that
only exists as '286 Xenix binaries, and the original developer is
long gone.
Bill
-- INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software LLC UUCP: camco!bill PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 URL: http://www.celestial.com/ ``Anyone who thinks Microsoft never does anything truly innovative isn't paying attention to the part of the company that pushes the state of its art: Microsoft's legal department.'' --Ed Foster, InfoWorld Gripe Line columnist
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