A few things:
1. libpd does not use any paths, settings,
audio/midi backends, etc from desktop pd. It is
only the core and less than "pd without the gui."
This is by design as it makes no assumptions about
the environment since it can be running in all
manner of places. This means it will only search
paths relative to an opened patch and those added
explicitly by llibpd_add_to_search_path().
2. Loading an external, whether it was compiled
against 0.47 or 0.49 should work as, largely, the
pd API has not changed that much.
3. libpd needs to be built with -DHAVE_LIBDL in
order to be able to load separate, precompiled
externals.
4. Some environments do *not* allow loading
dynamic libraries for legal/security reasons, ie.
iOS. I don't this is the problem, but it's good to
know...
I image you're issue is more to do with 3.
Message:
1
Date: Wed, 13 Feb 2019 15:04:19 +0100
From: Joseph Larralde <joseph.larralde@gmail.com>
To: Giulio Moro <giuliomoro@yahoo.it>,
Lucas Cordiviola
<lucarda27@hotmail.com>,
pd-dev <pd-dev@lists.iem.at>
Subject: Re: [PD-dev] libpd search paths
Message-ID: <2354c1c4-e6db-9143-1402-76dcd37b43a8@gmail.com>
Content-Type: text/plain; charset="utf-8";
Format="flowed"
Mmmh you might have found the clue ...
Actually I built the externals against pd
version 0.49-0 and it makes
sense that they load properly with the same
version.
node-libpd comes with an arm libpd binary which
seems to come from an
older version of pd (added 1 year ago).
I can already tell that it's not an architecture
issue because
everything is working on my pi : the addon is
loading and running
abstractions when used in a node program, and pd
is loading and running
my externals.
Only loading my externals from node-libpd
doesn't work.
Still trying to get a local version of
node-libpd to work ... then I'll
replace the libpd.so with one that I'll build
from the latest version.
I can't see another explanation.
Do you know something about incompatibilities
between different versions
of pd ?
The libpd.so used by the addon is probably not
older than 0.47
--