Re: [Discuss-gnuradio] Linking gr-digital in OOT Module (Success on OSX, fails on Linux)

[Cinaed Simson]

Maybe the version of swig?

On Debian Jessie, it's

  swig2.0 -version

which generates

  SWIG Version 2.0.12

-- Cinaed


On 11/12/2016 06:47 PM, Garver, Paul W wrote:
> I've isolated the issue further. I have a viterbi_algorithm_combined()
> call [1] in a work function in one of the blocks in the OOT module.
> Here's the snippet.
> 
> 
> // Call Viterbi decoder on the input
>               
> trellis::viterbi_algorithm_combined(d_fsm->I(),d_fsm->S(),d_fsm->O(),
>                     
> d_fsm->NS(),d_fsm->OS(),d_fsm->PS(),d_fsm->PI(),22,-1,-1,8,
>                     
> d_constellation,digital::TRELLIS_EUCLIDEAN,soft_decisions,&(bits[0]));
> 
> If I comment this out, all functions show up as expected in the python
> module. With the function, none of the SWIG wrappers appear. BUT, OSX
> has no problem with it. Strange! I don't know if SWIG is mangling this
> because it is a template function or if it is something totally different.
> 
> Here are the two setups:
> 
> "Linux Setup"
> OS: Ubuntu 16.04.1 LTS
> GR: v3.7.10.1-144-g7b0dfd80
> 
> g++ 5.4.0
> 
> 
> "Mac Setup"
> 
> OS: OSX 10.10.4
> 
> GR: v3.7-MacPorts-devel-git-e10637b(20160809)
> 
> clang --version Apple LLVM version 6.1.0 (clang-602.0.53)
> 
> 
> Not sure what other details are relevant. Anyone have any ideas?
> 
> 
> 
> 
> 
> [1]
> http://gnuradio.org/doc/doxygen/namespacegr_1_1trellis.html#aac3ff175700850a652cf80fb44b436eb
> 
> 
> 
> ------------------------------------------------------------------------
> *From:* Discuss-gnuradio
> <address@hidden> on behalf of
> Daniel P. Martin <address@hidden>
> *Sent:* Saturday, November 12, 2016 9:27 PM
> *To:* address@hidden
> *Subject:* Re: [Discuss-gnuradio] Linking gr-digital in OOT Module
> (Success on OSX, fails on Linux)
>  
> Just today I had a problem like this in an OOT module on Ubuntu. I'd
> added a callback method to allow gnuradio-companion to set a changed
> parameter. I'm not sure if this is the way it's supposed to work, but I
> had to go back to the build directory and do a "cmake ../" to get swig
> to discover the change and build a python wrapper for the method. So:
> make clean, cmake ../, make, sudo make install, sudo ldconfig. Good luck!
> 
> Dan
> 
> 
> On 11/12/16 2:55 PM, Garver, Paul W wrote:
>> I’ve got an out-of-tree module which uses gr-trellis and gr-digital. In the 
>> root OOT module directory’s CMakeLists.txt I’ve added:
>>
>> set(GR_REQUIRED_COMPONENTS RUNTIME TRELLIS DIGITAL)
>>
>> I’ve got a Mac OS X and Linux setup. On the MAC setup ( GR 
>> v3.7-MacPorts-devel-git-e106376b(20160809)), the OOT module compiles and 
>> executes as expected. However, on the Linux setup (GR 
>> v3.7.10.1-144-g7b0dfd80) I get the "AttributeError:’module’ object has no 
>> attribute” error.
>>
>> Running a Python session on Linux, importing the OOT module, and doing dir() 
>> yields none of the functions in the OOT module.
>>
>> The odd thing is that the OS X compilation is clearly linking 
>> libgnuradio-digital as found by
>> # otool -L
>>
>> BUT using ldd on the Linux compiled version does NOT show linking to 
>> libgnuradio-digital
>>
>> I’m thinking that not linking gr-digital is causing this issue. It is the 
>> exact same code. My understanding is that adding DIGITAL as shown above is 
>> sufficient for correct linkage, but it isn’t linking in Linux. Is there any 
>> reason I would need to explicitly add the digital library to CMakeLists in 
>> lib/?
>>
>> PWG
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> -- 
> Dr. Daniel Martin
> Acadia Controls, LLC
> 110 Gateway Commons Dr
> Gorham, ME
> 207 838-6465 mobile
> 207 839-6303 fax, office
> www.acadiacontrols.com <http://www.acadiacontrols.com>
> 
> 
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