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Re: [Discuss-gnuradio] Error installing gr-baz

From: Tom Rondeau
Subject: Re: [Discuss-gnuradio] Error installing gr-baz
Date: Wed, 16 Jul 2014 11:46:02 -0400

On Wed, Jul 16, 2014 at 11:29 AM, Doug Hutton <address@hidden> wrote:
Yesterday, I built a new Ubuntu 14.04, installed the new GNURadio 3.7.4 and installed gr-op25.  This all works, except that the gr-baz Op25 Decoder block, and other blocks, have unresolved baz imports. I ran ./pybombs install gr-baz and it ended with errors as shown in the Terminal log below.  The error appears to be that it cannot find gnuradio.i.
I have built this system before, with GNURadio 3.7.2 and have the same error.  I have done lots of searches and have reported this problem on op25-dev, but have had no answers.  Can someone please help?

----  Terminal Log  ----------------------------------
Current step: (gr-baz :: make)
make('\n    make -j4\n', '\n    make -j$makewidth\n')('\n    make -j4\n', '\n    make -j4\n')
bash exec (/home/doug/pybombs/src/gr-baz/build)::     make -j4
[  0%] Built target baz_swig_swig_doc
[  5%] Built target pygen_python_beed0
[  7%] Built target _baz_swig_swig_tag
[ 82%] Built target gnuradio-baz
[ 84%]
[ 87%] Swig source
Swig source/home/doug/pybombs/src/gr-baz/swig/baz_swig.i:3: Error: Unable to find 'gnuradio.i'
/home/doug/pybombs/src/gr-baz/swig/baz_swig.i:3: Error: Unable to find 'gnuradio.i'
make[2]: *** [swig/baz_swigPYTHON_wrap.cxx]
Error 1
make[1]: *** [swig/CMakeFiles/_baz_swig.dir/all] Error 2
make[1]: ***
Waiting for unfinished jobs....
make[2]: *** [swig/baz_swigPYTHON_wrap.cxx] Error 1
make[1]: *** [swig/CMakeFiles/pygen_swig_ae455.dir/all] Error 2
make: *** [all] Error 2
ERROR:root:PyBOMBS Make step failed for package (gr-baz) please see bash output above for a reason (hint: look for the word Error)

It's likely that the problem is just a missing swig include directory. Like gcc, you can tell swig other directories to look into for header and interface files. We set these up in GNU Radio using the SET(GR_SWIG_INCLUDE_DIRS) variable and passing it information about the location of the .i files for the required components.

My guess is that your gnuradio is installed into a "non-standard" directory, that is, one that swig doesn't look for by default, and that gr-baz isn't finding it and/or isn't passing the directory to swig. You'll find the gnuradio.i file in $prefix/include/gnuradio/swig, where $prefix is whatever directory you installed GNU Radio into, like /usr or /usr/local.

This isn't exactly a fix for your problem; I'd have to look at gr-baz to figure out why it's not using it, but hopefully it's enough info for you to work off of.


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