[Info-vax] Creating an open source version of VMS, was: Re: OpenVMS Hobbyist Notification

[Stephen Hoffman]

On 2020-03-11 20:01:25 +0000, Arne Vajhj said:

> 20 years ago it was said that VMS passed the 25 million lines of code.

~20 years ago, OpenVMS 64-bit source code was ~27 million lines. That 
included SIPs, and excluded layered products.
Roughly thirds between Macro32, Bliss, and C, and with the C source and 
module counts growing and the other two largely stable.
DCL was a very distant fourth IIRC, and everything else was largely noise.
Most new code in the past ~25 years was written in C, with one new 
chunk (ACME) written in Ada.
I'd expect things to have skewed further toward C since in the ensuing years.

I did a presentation with these and other tooling-related details at a 
couple of user events, way back then.
Not sure if those presentations are still around somewhere.

As for an open-source clone of OpenVMS, or discussions of migrating 
apps from IBM and what was once known as MVS and IBM-otherwise over to 
what was once known as VMS...
That's a whole-whole-whole lot of work.

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