I lean much more on the side that PDINSTANCE is a low-level, per project compile option and not general-purpose. If you are using libpd, then your environment is a bit more custom anyway.

On Mar 30, 2022, at 5:40 PM, pd-dev-request@lists.iem.at wrote:

Message: 1
Date: Wed, 30 Mar 2022 16:06:23 +0200
From: IOhannes m zmoelnig <zmoelnig@iem.at>
To: pd-dev@lists.iem.at
Subject: Re: [PD-dev] call for discussion double-precision file
extension
Message-ID: <3a9d2e07-a831-eb18-7797-5ff5b191e0b4@iem.at>
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On 3/29/22 20:26, Sebastian Shader via Pd-dev wrote:

I wonder if anything should be considered for multi-instance support as well (externals compiled w/ PDINSTANCE)

good question.

afaict, there are no plans to ever ship binaries Pd with PDINSTANCE=1 
(but i have no idea, really).

can we expect developers of PDINSTANCE-enabled (lib)Pds to also provide 
the binaries for the extrenals?
i guess it would be nice if you (as a patch-developer with a 
compiler-allergy) could just install whatever externals you want to be 
included with your camomille-based VST plugin.

gfmdras
IOhannes

--------
Dan Wilcox
@danomatika
danomatika.com
robotcowboy.com