RE: [Discuss-gnuradio] question on howto write a new block

[intermilan]

hi Eric:
     I had install the gnuradio-3.3.0,and use the create-gnuradio-out-of-tree-projec test_example command to make a new block which is named test_example,
then I changed the test_example_square_ff.h/cc to test_example_add_ff.h/cc,and I also changed other files like Makefile.am.Then I use the following command to install the new block:
     ./bootstrap
     ./configure
     ./make
     ./sudo make install
    After that I thought I had installed the new block,then I write a simple file to test it which is named test.py.but after I run the file ,I got the following errors:

File "./test.py", line 4, in <module>
    import test_example
  File "/usr/local/lib/python2.6/dist-packages/test_example/__init__.py", line 40, in <module>
    from test_example_swig import *
  File "/usr/local/lib/python2.6/dist-packages/test_example/test_example_swig.py", line 24, in <module>
    _test_example_swig = swig_import_helper()
  File "/usr/local/lib/python2.6/dist-packages/test_example/test_example_swig.py", line 20, in swig_import_helper
    _mod = imp.load_module('_test_example_swig', fp, pathname, description)
ImportError: libgnuradio-test_example.so.0: cannot open shared object file: No such file or directory

Can you tell me the reason of these errors?  Thank you in advance.


> Date: Tue, 9 Nov 2010 12:57:29 -0800
> From: address@hidden
> To: address@hidden
> Subject: Re: [Discuss-gnuradio] question on howto write a new block
>
> On Tue, Nov 09, 2010 at 03:23:35PM +0100, Martin Braun wrote:
> > On Tue, Nov 09, 2010 at 05:33:15PM +0800, intermilan wrote:
> > > hi all:
> > > I am writing a new simple signal processing block following the tutorial
> > > under the directory /gnuradio-3.2.2/gr-howto-write-a-block-3.2.2(there is no
> > > gr-howto-write-a-block-3.2.2 at the beginning,and this one is I downloaded and
> > > copied to this directory)and named 'howto_add_ff' block. I've created
> > > howto_add_ff.h and howto_add_ff.cc file under /gnuradio-3.2.2/
> > > gr-howto-write-a-block-3.2.2/src/lib.Then I modified howto.i and Makefile.am in
> > > the same directory.
> > > After that I run the following command under the directory /gnuradio-3.2.2/
> > > gr-howto-write-a-block-3.2.2:
> > > ./bootstrap
> > > ./configure
> > > make
> > > Then I got a error said "thers is no rules for "all-am" to creat the
> > > required target "howto_add_ff.h".STOP."( I translate the error into english
> > > beacause I do no use engliah as the language of my Ununtu).
> > > Can anyone tell me how to fix it?
> >
> > You've probably not adapted the Makefiles properly.
> > Have a look where howto_square_ff.* is referenced (it's a couple of
> > places).
> > I recommend using gr_modtool.py (you can get it from
> > https://www.cgran.org/wiki/devtools), this automatically does all the
> > edits for you.
> >
> > Cheers,
> > MB
>
> I'd also suggest starting with 3.3.0 (or git master) instead of 3.2.2, and use the
>
> $ create-gnuradio-out-of-tree-project <my-module-name>
>
> command to get you started.
>
> Eric
>
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