Andres Freund <and...@anarazel.de> writes: > On 2022-10-05 16:09:14 -0400, Tom Lane wrote: >> Color me confused, but how does it work to #define that from the command >> line if it can't be overridden from within the program?
> If specified on the commandline it's also used when generating the precompiled > header - of course that's not possible when it's just #define'd in some .c > file. Ah, so there's a separate cache of precompiled headers for each set of compiler command-line arguments? Got it. regards, tom lane