Horton

Re: Annoying build warnings from latest Apple toolchain

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2023-09-30T17:28:01Z
Lists: pgsql-hackers 
Andres Freund <andres@anarazel.de> writes:
> On 2023-09-29 12:14:40 -0400, Tom Lane wrote:
>> Looking closer, it's only since v16 that we have export list support
>> on all officially-supported platforms.

> Oh, right, before that Solaris didn't support it. I guess we could backpatch
> that commit, it's simple enough, but I don't think I care enough about Solaris
> to do so.

HPUX would be an issue too, as we never did figure out how to do
export control on that.  However, I doubt it would be a great idea
to back-patch export control in minor releases, even if we had
the patch at hand.  That would be an ABI break of its own, although
it'd only affect clients that hadn't done things quite correctly.

>> Therefore, I think the prudent thing to do in the back branches is use the
>> patch I posted before, to suppress the duplicate -l switches only on macOS.
>> In HEAD, I propose we simplify life by doing it everywhere, as attached.

> Makes sense.

Done that way.  Were you going to push the -Wl,-exported_symbols_list
change?

			regards, tom lane

Commits

  1. meson: macos: Avoid warnings on Sonoma

  2. Restore proper linkage of pg_char_to_encoding() and friends.

  3. meson: macos: Correct -exported_symbols_list syntax for Sonoma compat

  4. Suppress macOS warnings about duplicate libraries in link commands.

  5. Stop using "-multiply_defined suppress" on macOS.

  6. Fix the inadvertent libpq ABI breakage discovered by Martin Pitt: the

  7. Cause libpq and ecpg libraries to be built as proper shared libraries