ImportError: No module named dsd_swig

[mattia-beta]

Hi, i've just built gr-dsd from source but the DSD demodulator is not showing inside shinysdr.
Looking at the source code I've found this snippet:

try:
from dsd import block_ff as dsd_block_ff
_available = True
except ImportError:
_available = False

I think the problem is that shinysdr can't find the dsd python module.
I've manually tried to import this module inside a python script but I got this error:

from dsd import block_ff as dsd_block_ff
Traceback (most recent call last):
File "", line 1, in
File "**/usr/lib/python2.7/dist-packages/**dsd/init.py", line 45, in
from dsd_swig import *
ImportError: No module named dsd_swig

I've also checked the PYTHON_PATH running:
python -c "import sys; print '\n'.join(sys.path)"

and the response is:

/usr/local/lib/python2.7/dist-packages/ShinySDR-0.0.0-py2.7.egg
/usr/local/lib/python2.7/dist-packages/ephem-3.7.6.0-py2.7-linux-armv7l.egg
/usr/local/lib/python2.7/dist-packages/txWS-0.9.1-py2.7.egg
/usr/local/lib/python2.7/dist-packages/Twisted-16.3.2-py2.7-linux-armv7l.egg
/usr/local/lib/python2.7/dist-packages/zope.interface-4.2.0-py2.7-linux-armv7l.egg
/usr/lib/python2.7/dist-packages
/usr/lib/python2.7
/usr/lib/python2.7/plat-arm-linux-gnueabihf
/usr/lib/python2.7/lib-tk
/usr/lib/python2.7/lib-old
/usr/lib/python2.7/lib-dynload
/usr/local/lib/python2.7/dist-packages
/usr/lib/python2.7/dist-packages/PILcompat
/usr/lib/python2.7/dist-packages/gtk-2.0
/usr/lib/pymodules/python2.7
/usr/lib/python2.7/dist-packages/wx-3.0-gtk2

Searching for "gr-dsd" in the filesystem:

/usr/lib/libgr-dsd.so
/usr/local/lib/libgr-dsd.so

Any idea?
How can I fix this error?
Thank you =)

[kpreid]

I'm afraid I don't have any advice for Python SWIG issues — and as you've already figured out, this is a problem with installing gr-dsd and not ShinySDR per se. Sorry!

(But if you figure it out, let me know — I'm thinking of putting together a “troubleshooting” section of the manual.)

[mattia-beta]

@kpreid I've fixed this issue doing:

cmake . -DPYTHON_INCLUDE_DIR=/usr/include/python2.7 -DPYTHON_LIBRARY=/usr/lib/libpyglib-2.0-python2.7.so.0

make

sudo make install

sudo ldconfig

Otherwise _dsd_swig.so is built and linked against libpython3.5m.so, leading to the following error on "import dsd": dynamic module does not define init function (init_dsd_swig)

Bye