Hi, On 2018-01-31 15:48:09 +1300, Thomas Munro wrote: > On Wed, Jan 31, 2018 at 3:05 PM, Andres Freund <and...@anarazel.de> wrote: > > I'm not quite sure I understand. You mean have it display whether > > available? I think my plan is to "just" set jit_expressions=on (or > > whatever we're going to name it) fail if the prerequisites aren't > > available. I personally don't think this should be enabled by default, > > definitely not in the first release. > > I assumed (incorrectly) that you wanted it to default to on if > available, so I was suggesting making it obvious to end users if > they've accidentally forgotten to install -jit. If it's not enabled > until you actually ask for it and trying to enable it when it's not > installed barfs, then that seems sensible.
I'm open to changing my mind on it, but it seems a bit weird that a feature that relies on a shlib being installed magically turns itself on if avaible. And leaving that angle aside, ISTM, that it's a complex enough feature that it should be opt-in the first release... Think we roughly did that right for e.g. parallellism. Greetings, Andres Freund
