The "build release" I was running on a copy of "classic" SimH 3.12-4 completed successfully this afternoon, after nearly 7 days running.
Excellent!Next is a native build on real VAX hardware. I'm running a build on my VAXstation 4000/60, with the last 100 lines of the build log (updated every ten minutes) available here:
http://vax.zia.io/status.txt :) John