Hallo!
So is there a way how the externals can find the shared library, whithout copying it into a global library path like /usr/lib/ ?
It seems that the only way is, to add the /full/path/to/installed/library/directory to the LD_LIBRARY_PATH variable before starting pd ...
I think you can link to it using a relative path, or even better, just the same dir, i.e. "." Mac OS X has handy tools for managing library paths (otool -L and install_name_tool), I don't know about other platforms.
"." does not work on linux - I would have to install the library first and then link it to the full path where I have it installed.
So it seems that the only way is to use dlopen() - where I have to modify the source (and handle it seperate for all platforms in the source file ...). I think it's not worth to do that for PDContainer - but we can continue to think about it if we can also use it for other externals ;)
LG Georg