[Oberon] Compiling Original Oberon in (Unix)Aos?

[jwr at robrts.net]

Hmmm.. There is a key clue (but I still don't fully understand) in  
Eric Scharff's original message at  
http://lists.inf.ethz.ch/pipermail/oberon/2016/008792.html.  He  
mentions both Oberon and Oberon-2, and indicates that there is an  
"Oberon subsystem" within AOS.

Perhaps there is one "Oberon subsystem" when there should be two?  One  
for (original) Oberon, and one for Oberon-2? This would suggest at  
least THREE contexts (or "subsystems"?) in which code can be compiled:  
one for AOS, one for Oberon, and one for Oberon-2. There may need to  
be a different compiler used in each context, and code compiled for or  
within one context should not be used by code in another context?  
Perhaps the problem Eric has encountered is related to the contexts  
for Oberon and Oberon-2 not being sufficiently well defined and  
separated?

Again, I am concerned I misunderstand something very important. Please  
clarify.

-- John Roberts