Re: Regarding the ULTRIX and OSF1 compats

> On Mar 16, 2019, at 7:12 AM, Mouse <[email protected]> wrote:
>=20
>> (or even is necessarily from an architecture that would ever normally
>> want that compat option - so we could include COMPAT_ULTRIX on a
>> sparc or x86_64 for testing purposes.)
>=20
> That borders on meaningless.  If Ultrix never ran on SPARC or x86_64
> (which was the case AFAIK), what would it even mean to be compatible
> with it?

Correct, Ultrix only ever ran on PDP-11 (not relevant to this discussion =
:-), VAX, and MIPS-based DEC equipment.  We ostensibly support it for =
any little-endian MIPS  platform and VAX, but I don't know how much =
real-world testing it's ever had on VAX.  The Ultrix binaries you tend =
to find out in the wild are for MIPS, because every DECstation / =
DECsystem came with it.

Fundamentally, you need to have access to the correct architectures to =
test the compat modules, and you furthermore have to have access to the =
foreign binaries (and possibly also the foreign system run-time =
environments, if shared libraries are used).

-- thorpej