On Thu, 7 Mar 2024 at 18:14, Tom Lyon <pugs78@gmail.com> wrote:

> For no good reason, I've been wondering about the early history of C
> compilers that were not derived from Ritchie, Johnson, and Snyder at Bell.
> Especially for x86.  Anyone have tales?
> Were any of those compilers ever used to port UNIX?
>

As a slightly separate addendum, I'm curious about the slightly later
history of compilers for commercial UNIX distributions.  Were these derived
from the Bell/BSD sources or were they "clean room" approaches?  I'm
thinking of SunPRO, IBM XL C, the MIPS compiler, DEC GEM, etc.

-Henry