Good Morning everyone,
I figured out how to add my own source files in GNURadio and also how to add
support for external libraries, in my case it was for Protobuf. I will just
write a note here, hoping that it will help someone in the future.
1. I placed all of my own .h and .cpp files in the "lib" folder of my module,
along with the "impl.cc" files.
2. I edited "CMakeLists.txt" of the "lib" folder; in that I added all of my own
.cpp file names in "Setup library" section in the statement " list(APPEND ...)
".
To add C++11 flag -
1. I edited "CMakeLists.txt" in the home folder of my module (i.e.
gnuradio/gr-modulename/CMakeLists.txt); in that I added a command
set(CMAKE_CXX_FLAGS "-std=c++11") in "Compiler specific setup" section after
add_definitions().
To add external libraries, in my case Protobuf -
1. I edited "CMakeLists.txt" in the "lib" folder of my module.
2. In "Setup library" section, i added some commands to find the library I am
looking for and then added them in "include_directories()" and in
"link_directories()".
include(FindProtobuf)
find_package(Protobuf REQUIRED)
include_directories(${Boost_INCLUDE_DIR} ${Protobuf_INCLUDE_DIRS})
link_directories(${Boost_LIBRARY_DIRS} ${Protobuf_LIBRARIES})
target_link_libraries(gnuradio-modulename ${Boost_LIBRARIES}
${GNURADIO_ALL_LIBRARIES} ${Protobuf_LIBRARIES})
After doing this it works for me now and I don't get attribute error which was
happening because of my source files and libraries not being linked.
Regards,
Pranav Padalkar
Fraunhofer-Institut für Eingebettete Systeme und Kommunikationstechnik ESK
________________________________
From: Discuss-gnuradio
<discuss-gnuradio-bounces+pranav.padalkar=esk.fraunhofer...@gnu.org> on behalf
of Pranav Padalkar <pranav.padal...@esk.fraunhofer.de>
Sent: Wednesday, August 24, 2016 9:19 AM
To: Dave NotTelling
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Attribute error: and support with external
class and header files
Hi Dave,
Thanks for your reply. Actually I figured out the problem. After going through
the files of the already existing blocks, especially the CMakeLists.txt, I
figured out where I need to add my own header files. I added entries of all the
class files in the CMakeLists.txt inside “lib” folder. I am not sure if this
has solved the problem, but at least it is compiling now. Currently I am facing
the problem of how to make the GnuRadio compiler to get the C++11 flag. I know
it has to be added to the CMake file, but I am not sure where exactly. If
anyone knows about this, then kindly let me know. I also need to include other
libraries like pthread, libboost_filesystem, etc.
Thanks and Regards,
Pranav
Von: Dave NotTelling [mailto:dmp250...@gmail.com]
Gesendet: Dienstag, 23. August 2016 18:50
An: Pranav Padalkar
Cc: discuss-gnuradio@gnu.org
Betreff: Re: [Discuss-gnuradio] Attribute error: and support with external
class and header files
I've had bad luck just putting my own headers in OOT modules. The way I do
things now is to use gr_modtool add and select 'noblock'. Then just remove the
grc XML file created. Seems that YourModuleName_API is needed before structs
and classes or it doesn't get seen by Swig. Could be wrong about that. Might
just work for me on a fluke =\
On Tue, Aug 23, 2016 at 6:47 AM, Pranav Padalkar
<pranav.padal...@esk.fraunhofer.de<mailto:pranav.padal...@esk.fraunhofer.de>>
wrote:
Hello all,
I have written a c++ code and I wish to implement as a block in GNURadio. I
created a module (named "newblocks") and a block (named "my_client) and made
appropriate changes. The thing is, I have many class and header files for my
c++ code, for eg. Protobuf. I put those files in a folder called "client"
inside "include" folder of my module (gr-newblocks/include/newblocks/client).
It showed no error during cmake, make, make install and ldconfig. But when I
put the block in the flowgraph and run it, it gives me following error.
File "/home/sdr/workspace/develop/Pranav/USRP_client/usrp_client.py", line 115,
in __init__
self.newblocks_my_client_0 = newblocks.my_client("123", "8080")
AttributeError: 'module' object has no attribute 'my_client'
I already had a working block in the same module, which I had created earlier.
And now even that block gives me same error. If I don't use any of the two
blocks, the flowgraph works fine.
I, then, also added a CMakeLists.txt file in that "client" folder and entered
all the .h and .c files in the text file. I added the entry for "client" folder
in the "Add subdirectories" part of the CMakeLists.txt in (gr-newblocks/ ). Is
there anything else I need to do in order to use my own class and header files?
Do I also need to put the .o files along with the header and class files? I
tried with both, putting the .o files and not putting them, it still shows the
same error.
I even created a new module and a new block and copy pasted my code and header
and class files. I still get the same error. I kindly ask for help in this
regard. I am using Ubuntu 14.04 LTS, GnuRadio 3.7.9.2, I am using a lot of
Boost 1.61.
Thank you in advance.
Best Regards,
Pranav Padalkar
Fraunhofer-Institut für Eingebettete Systeme und Kommunikationstechnik ESK
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