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
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