Re: Fix port/pg_iovec.h building extensions on x86_64-darwin

From: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
To: Wolfgang Walther <walther(at)technowledgy(dot)de>
Cc: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Fix port/pg_iovec.h building extensions on x86_64-darwin
Date: 2024-11-08 22:26:44
Message-ID: CA+hUKGJ66z6a=jnkp+vMCWRQCJZMvcx61saxbNPnwnS-xoC0iw@mail.gmail.com
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On Sat, Nov 9, 2024 at 8:08 AM Wolfgang Walther <walther(at)technowledgy(dot)de> wrote:
> When building pg_cron [1] or pg_hll [2] for PG 17 on x86_64-darwin, we
> encounter the following build failure in nixpkgs:

Out of curiosity, is nixos deliberately using an old macOS deployment
target or SDK, 10.something? I'm just wondering if our feature
detection is working correctly on macOS/x86, because I'd expect real
preadv/pwritev to be there from 11 onwards, and 11 is already out of
support by Apple.

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