I used to admin SCO OpenServer systems, and that is correct.  Unixware and
OpenServer are not binary compatible.  Don't ask me why SCO did that, never
understood the logic of it, if indeed there was any.

To further complicate matters, I believe that different versions of OpenServer
were not necesarily compatible with each other, either.

But I THOUGHT that SCO Unixware binaries were supposed to run under
IBCS2 emu, not SYSV emu.  Or was that OpenServer that's for IBCS2.  Confusing,
no?

(there i go thinking again?)
Ross

> 
> If the binaries are SCO Unixware, they are regular SVR4 ELF binaries.
> However, SCO Openserver uses a "different" ELF format.
> 
> I have to think back to 1995 about this, but I remember that when SCO went
> from Opendesktop to Openserver, they changed from COFF to ELF. The release
> notes that I read claimed that SCO ELF binaries were not exactly the same
> format as SVR4 binaries, and wouldn't run on a SVR4 system.
> 
> -- 
> Rick Kelly  rmk@rmkhome.com  www.rmkhome.com