On 2018-03-20 17:23:26 +0000, Dagfinn Ilmari Mannsåker wrote: > Tom Lane <t...@sss.pgh.pa.us> writes: > > That seems like expensive overkill to me, especially since it seems > > unlikely that we'd keep the list up-to-date over time. > > The patches uptread add about 0.2s to a 6.9s configure run here, I don't > consider that very expensive. We don't add new modules very often, so I > don't think it's much of a maintenance overhead either.
Not huge, but also not nothing. But I think if we care we could make this cheaper fairly easily? I don't think there's any need to invoke perl one-by-one for each module. Should be trivial to have perl report back all the modules it's missing from a list of arguments. It's also certainly annoying that AX_PROG_PERL_MODULES doesn't support caching. I'm not sure we're benefiting much from using the AX* script here. Greetings, Andres Freund
