| Perfect,
Thank you everyone. What I did was include the header files in my block source files; I needed to add them to the CMakeLists.txt in /lib under: list(APPEND router_sources to get everything to build and link correctly.
I was then able to import the module and use it without error in python. From now on I will use 'no block'.
---------
The next question I have is... is there any documentation on creating GNU Radio programs in c++ including the build instructions? I want to test my code in a c++ program as well. I saw the example dial_tone, but I'm not sure what else I need to include to build it. dial_tone also doesn't seem to work in my virtual machine with the following error:
address@hidden:~/Src/pybombs/src/gnuradio$ ./build/gr-audio/examples/c++/dial_tone audio_oss_sink: /dev/dsp: No such file or directory terminate called after throwing an instance of 'std::runtime_error' what(): audio_oss_sink Aborted (core dumped)
Sincerely,
Tommy James Tracy II Ph.D Student High Performance Low Power Lab University of Virginia Phone: 913-775-2241
On Fri, Sep 20, 2013 at 7:13 PM, Martin Braun (CEL)
<address@hidden> wrote:
Hi Tommy,
is this a visibility issue? Did you use modtool to add the additional
classes? If not, do you have a FOO_API macro in your class def?
MB
Tommy,
Yes, make sure that the FOO_API is declared for the classes. Also, you
have to make sure they are being imported into the swig module
correctly in gr-foo/swig/foo_swig.i.
You can use gr_modtool with the class type "noblock" to create classes
that are not gr::blocks for this purpose, which will set up the cmake
and swig files correctly.
On Fri, Sep 20, 2013 at 01:58:16PM -0400, Tommy Tracy II wrote:
Dear List,
I am using gr_modtool to create new modules and blocks, and I have a question
about adding additional .cc/.h files that are not included by gr_modtool to the
cmake file or otherwise importing them by hand.
My new blocks are dependent on two new classes called NetworkInterface.{cc,h}
and EthernetConnector.{cc,h}. During the make process, if there is a syntax
error in either of these files, the compiler will alert me. I was able to fix
all problems and get the cmake, make, and make install completed. The problem
manifested itself when I attempted to import the module:
----------
import router
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/tjt7a/Src/target/lib/python2.7/dist-packages/router/__init__.py",
line 45, in <module>
from router_swig import *
File "/home/tjt7a/Src/target/lib/python2.7/dist-packages/router/
router_swig.py", line 26, in <module>
_router_swig = swig_import_helper()
File "/home/tjt7a/Src/target/lib/python2.7/dist-packages/router/
router_swig.py", line 22, in swig_import_helper
_mod = imp.load_module('_router_swig', fp, pathname, description)
ImportError: /home/tjt7a/Src/target/lib/libgnuradio-router.so: undefined
symbol: _ZN16NetworkInterface7connectEPc
----------
To investigate the definition of this symbol, I ran c++filt
----------
$c++filt _ZN16NetworkInterface7connectEPc
NetworkInterface::connect(char*)
----------
This indicates, that my libgnuradio-router module cannot access the
NetworkInterface object file, even though it was part of the compilation step.
My thought process was to create the two shared object (.so) files by hand, and
move them to my python path location. So I did that:
----------
cc -shared -o libEthernetConnector.so -fPIC EthernetConnector.cc
cc -shared -o libNetworkInterface.so -fPIC NetworkInterface.cc
I then copied them to the location of my gnuradio .so files
----------
Unfortunately, this still hasn't solved the problem. Does anyone know a
solution to this problem?
Tommy James Tracy II
Ph.D Student
High Performance Low Power Lab
University of Virginia
Phone: 913-775-2241
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--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
Dipl.-Ing. Martin Braun
Research Associate
Kaiserstraße 12
Building 05.01
76131 Karlsruhe
Phone: +49 721 608-43790
Fax: +49 721 608-46071
www.cel.kit.edu
KIT -- University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association
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Tom
GRCon13 Oct. 1 - 4
http://www.trondeau.com/grcon13
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