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Re: [Discuss-gnuradio] gr_zeromq on MS-Windows ?

From: Geof Nieboer
Subject: Re: [Discuss-gnuradio] gr_zeromq on MS-Windows ?
Date: Thu, 18 Apr 2019 10:32:38 -0400

There is a problem with the latest installer related to the changes in the way libzmq's build process works.  
So the libraries are misnamed.  
Rename the zmq library to libzmq.dll (it'll be something like libzmq_v140_mt_something.dll currently) and see if that resolves the issue.


On Wed, Apr 17, 2019 at 12:30 PM Andrej Rode <address@hidden> wrote:
Hi Jean-Michael,

On Wed, 17 Apr 2019 15:34:21 +0000
"address@hidden" <address@hidden> wrote:

> Files\GNURadio-3.7\lib\site-packages\gnuradio\zeromq\zeromq_swig.py",
> line 18, in swig_import_helper return
> importlib.import_module('_zeromq_swig') File "C:\Program
> Files\GNURadio-3.7\gr-python27\lib\importlib\__init__.py", line 41,
> in import_module __import__(name)
> ImportError: DLL load failed: Le module spÚcifiÚ est introuvable.
> ^^^ French for "The specified module cannot be found"

This usually indicates that `_zeromq_swig.(so|dll)` was found, but
contains unresolvable dynamic linking. Maybe libzmq is missing in the

On a Linux host I'd go here: "C:\Program
Files\GNURadio-3.7\lib\site-packages\gnuradio\zeromq\" and look at the
`_zeromq_swig.so` with `ldd`. I don't know what the tool of choice on a
Windows platform is for looking up the dynamic linking of a library,
but certainly that information will help you locate the missing pieces.


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