Re: [Discuss-gnuradio] Understanding c++ code

[Marcus Müller]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Sara,

You have to have a full source tree lying around, where you modify the
code.
Then you follow the official wiki's guide on how to build from source:
http://gnuradio.org/redmine/projects/gnuradio/wiki/BuildGuide

Greetings,
Marcus

PS: I've mentioned that already, but let me say this once again:
gnuradio.org is the only source of information that's not likely to
outdate.

On 13.04.2014 01:02, Sara Chérif wrote:
> how I can re-build digital library only after making changes in c++
> code of a block.. not re-building the whole gnuradio
> 
> I installed GNU RADIO from this link 
> http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/
>
> 
> 
> 2014-04-13 0:55 GMT+02:00 Sara Chérif <address@hidden>:
> 
>> How to rebuild gnuradio after I changed in c++ codes ? Note: I
>> installed GNU RADIO from this link
>> 
>> http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/
>>
>>
>>
>> 
2014-04-12 17:17 GMT+02:00 Marcus Müller <address@hidden>:
>> 
>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA1
>>> 
>>> Hi Sara,
>>> 
>>> C++ is a compiled language; you can not execute a source code
>>> file. You have to recompile the file by rebuilding GNU Radio. 
>>> additive_scrambler_bb_impl.cc contains the implementation of
>>> the additive_scrambler_bb block, it is not itself executable. 
>>> You need to have a flowgraph containing that block to test
>>> your modified version.
>>> 
>>> I think you should start with a basic C++ tutorial before you
>>> try to understand and modify GNU Radio's C++ codebase -- these
>>> are very basic concepts you are missing.
>>> 
>>> Greetings, Marcus
>>> 
>>> On 12.04.2014 16:18, Sara Chérif wrote:
>>>> I installed GNU RADIO from this link
>>>> 
>>> http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/
>>>>
>>>>
>>>
>>> 
I want to test some blocks & see their output to understand them more and
>>>> more. for example I opened additive_scrambler_bb  c++ codes
>>>> in terminal to understand but I want to see how some
>>>> parameters change in code when running it . how to output
>>>> these parameters in terminal ? Can I write in code "cout"
>>>> like any c++code? And do I have to build gnuradio again even
>>>> if I will erase all my modifications in code (I don't want
>>>> these modifications permanently I want only to output all
>>>> parameters to understand the block)
>>>> 
>>>> I did the following: editing it using  vim 
>>>> ./additive_scrambler_bb_impl.cc running it to see the output
>>>> on terminal using ./additive_scrambler_bb_impl.cc
>>>> 
>>>> but when I ran it in terminal I got this message: bash: 
>>>> ./additive_scrambler_bb_impl.cc: Permission denied
>>>> 
>>>> Thanks
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iQEcBAEBAgAGBQJTSi5zAAoJEBQ6EdjyzlHtF3cH/RiYAcNGstQDkd75sPGn/5Ow
f7fKpkMZwxvp3rcbtTTda5DPiwEtvxO1yfajiuyRt3/Ono4qDPhoqcCVdY15HlnM
NvM1LwjbMXHGH0XQJKa+0ICOW3mCzf2L6Z+1BemyF+tlk3cVX2QwD3aGPN9i8BQ4
7R/BsDCI08wQ1OhGXM1CSJW5MpTyKsrbgjnZAV6+CvLvbSl3Bp2lBkiZvYmvYqJH
lWNGfGaC3LvrIOWL9v0Mov2zl1WVXBxqGZzbhJ5v2GExMBj9vdAr7s/TZCliV7/a
n0LPjEu2cf5rwI9PQeqqrx1NRZkmf7AFOAv2P+n6CJRC74mijNAlbQkg69luzTo=
=BJuE
-----END PGP SIGNATURE-----