Ultrix 2.3 and 4.3 BSD not binary compatible?

[dan at hplabs.UUCP]

Reply-to: dan at hplabs.UUCP

> We ran into a problem today in that a program compiled on a Vax running
> Ultrix 2.3 got a "Bad System Call" and core dumped on a 4.3 BSD system.
> Anyone known what works and what doesn't?

When we tried this with one of our programs, it turned out to be a difference
in the way the directory reading routines were implemented.  That is, although
the same system call interface routines existed on both systems, internally
(inside libc) those interfaces turned into different system calls.

That was as far as we got; I suspect that there were more problems like this.
You might have better luck carrying over the .o files and relinking.

	Dan Franklin