Re: Annoying build warnings from latest Apple toolchain

Andres Freund <andres@anarazel.de> writes:
> On 2023-11-28 10:48:04 -0500, Robert Haas wrote:
>> What a stupid, annoying decision on Apple's part. It seems like
>> -Wl,-undefined,error is the default behavior, so they could have just
>> ignored that flag if present, but instead they complain about being
>> asked to do what they were going to do anyway.

> Especially because I think it didn't actually use to be the default when
> building a dylib.

Indeed.  Whoever's in charge of their linker now seems to be quite
clueless, or at least aggressively anti-backwards-compatibility.

> While not helpful for this, I just noticed that there is
> -no_warn_duplicate_libraries, which would at least get rid of the
>   ld: warning: ignoring duplicate libraries: '-lxml2'
> style warnings.

Oh!  If that's been there long enough to rely on, that does seem
very helpful.

            regards, tom lane