[COFF] Building OS from source in the olden days

[Bakul Shah]

On Nov 10, 2020, at 3:11 PM, Greg 'groggy' Lehey <grog at lemis.com> wrote:
> 
> I'm currently reviewing a paper about Unix and Linux, and I made the
> comment that in the olden days the normal way to build an OS image for
> a big computer was from source.  Now I've been asked for a reference,
> and I can't find one!  Can anybody help?

Not sure about a "big computer" but what about this paper by Richard
Miller on porting V6 to Interdata 7/32?

http://bitsavers.org/bits/Interdata/32bit/unix/univWollongong_v6/miller.pdf