Yes, that was the reason I was getting the run-time error. I did set the build options to WX GUI in the options block (it was set to QT GUI) previously, and now it runs. The problem is that when the window opens I can't see any FFT plot, it is just a blank
window, and I get the message:
Warning: failed to XInitThreads()
Using Volk machine: avx_32_mmx
Greetings,
Nikos
From: discuss-gnuradio-bounces+address@hidden [discuss-gnuradio-bounces+address@hidden on behalf of Marcus Müller
address@hidden
Sent: Wednesday, March 18, 2015 2:31 PM
To: address@hidden
Subject: Re: [Discuss-gnuradio] Run-time error while executing a simple flowgraph in GNU Radio companion
That is a good sign! This looks like you're using WX widgets, but you haven't set the build options to WX GUI (could be "No GUI" or "QT GUI") in the options block in your GRC flow graph.
Greetings,
Marcus
On 03/18/2015 01:25 PM, NIKOS BIZANIS wrote:
After running ldconfig I still get an error, but a somewhat different one:
Warning: failed to XInitThreads()
Traceback (most recent call last):
File "/home/nikos/top_block.py", line 105, in <module>
tb = top_block()
File "/home/nikos/top_block.py", line 56, in __init__
self.GetWin(),
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 93, in __getattr__
return getattr(self._impl, name)
AttributeError: 'top_block_sptr' object has no attribute 'GetWin'
Is it still the case that I am missing some library, or it is installed elsewhere than it should?
Thank you again,
Nikos
Ah well, in that case: it seems like you've successfully installed the block definition XML files to a place GRC can find them, but that does not apply to the library you're missing now. If "sudo ldconfig" doesn't help, make sure that
make install
inside your gnuradio/build directory actually is successful. If you get errors about missing permissions, you might want to run the command via sudo:
sudo make install
You might also want to have a look at gnuradio/build/install_manifest.txt, which should list all the files that were installed. look for a line containing the library you're missing -- where did it get installed to? Where did, for example, gnuradio-companion
get installed to? Is that the same as what "which gnuradio-companion" is telling you?
Best regards,
Marcus
On 03/18/2015 01:01 PM, NIKOS BIZANIS wrote:
Hi Marcus,
What I meant by "able to use", was that I was able to find the blocks using the search facility and put the block to a flowgraph. I had not actually tried to build and execute a flowgraph containing any of these blocks, and now that I tried this was the
result.
Greetings,
Nikos
Hi Nikos,
you said earlier you were able to use WX widgets. Did you do something in between that and your system now not being able to find the libgnuradio-wxgui library?
Greetings,
Marcus
On 03/18/2015 12:34 PM, NIKOS BIZANIS wrote:
Hey all,
Just to start experimenting with GNU Radio and companion I just created a simple flowgraph consisting of a Signal Source Block and a WX GUI FFT Sink connected to it, to see if the diagram will be generated. I get a run-time error, namely:
Executing: "/home/nikos/top_block.py"
Traceback (most recent call last):
File "/home/nikos/top_block.py", line 12, in <module>
from gnuradio import wxgui
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/__init__.py", line 32, in <module>
from wxgui_swig import *
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/wxgui_swig.py", line 28, in <module>
_wxgui_swig = swig_import_helper()
File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/wxgui_swig.py", line 24, in swig_import_helper
_mod = imp.load_module('_wxgui_swig', fp, pathname, description)
ImportError: libgnuradio-wxgui-3.7.6.1.so.0.0.0: cannot open shared object file: No such file or directory
What could be wrong here?
Thank you,
Nikos
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