Yes, I think you're right. The DAW may load the plugins with RTLD_LOCAL that's why my symbols are not accessible. Thanks a lot ! So I have to load dynamic libraries in Pure Data that is already a dynamic library loaded by my plugin that is already a dynamic library loaded by the DAW... it sounds like Inception.

2016-03-10 10:19 GMT+01:00 Kjetil Matheussen <k.s.matheussen@gmail.com>:

On Thu, Mar 10, 2016 at 10:12 AM, Nicolas Danet <nicolas.danet@free.fr> wrote:
Does it means that if the host opens the plug-in with RTLD_LOCAL flag, that plug-in will not be able to export its symbols table to its own dlopened externals (even doing it with RTLD_GLOBAL)?

It's been a while since I worked with this, but I think that's correct.
You have to load the pure data code with RTLD_GLOBAL in order
to load pd externals. And as I said, you can do that from your
plugin just be creating another dynamic library which is loaded from
your plugin.

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