OK, somewhat more constructively, after getting a job done, I went back to that Lazarus Main Source, dated 2026-07-13 and run a number of tests. It built, perfectly, 5 times in a row.
So, I unziped the source I used into a fresh directory, same result, 5 times in a row.
So, just what the difference is, I don't know. Before starting this thread, I had tried that original make .. three times, believed it was repeatable. The 13th was a Monday, maybe it only happens on a Monday ?
I pulled down a current main (Yes Thaddy, I am still accessing main) and it builds fine.
Davo