Hi Richard - thanks so much for looking into this. I hope Nelson's config.site is all it is. That would explain why the tests worked for everyone else. I agree with your patch, in any case, will install soonly. I'm surprised it has never come up before.
Now if only we could figure out the AM_TRY_RUN thing. If you have any ideas, they would be welcome :). https://lists.gnu.org/archive/html/automake/2025-02/msg00032.html and following ... Thanks, Karl