Gr-qtgui not getting installed

GNU Radio
1

Hi,
I’ve built the GNU Radio next branch, and explicitly specific

./configure --enable-gr-qtgui

The resulting process showed that gr-qtgui would be built.

However, when I try to run

gnuradio-examples/python/usrp2/usrp2_wfm_qt.py

I get the Please install gr-qtgui message, even though it has already
been installed.

Why is this so?

Best regards,

Elvis D.

2

On Fri, Jul 16, 2010 at 8:22 AM, Elvis D. [email protected]
wrote:

I get the Please install gr-qtgui message, even though it has already been installed.

Why is this so?

Best regards,

Elvis D.

First, you don’t want to use that program. Even if you got past your
current issue, it will still exit with an error because the code isn’t
working.

Still, you shouldn’t be running into that particular problem. A better
program to test is gr-qtgui/src/python/usrp2_display.py. That one
works fine.

Do you see a qtgui directory under your
$prefix/lib/python2.6/site-packages/gnuradio? If that’s there, then
you should be able to import it. If it’s not, then something’s gone
wrong in the build/install process. What OS are you running?

Tom

3

Hi Tom,

On Jul 16, 2010, at 5:30 PM, Tom R. wrote:

Still, you shouldn’t be running into that particular problem. A better
program to test is gr-qtgui/src/python/usrp2_display.py. That one
works fine.

I get the following error when typing that command, seems to be a
problem with an undefined symbol: _ZTV22Waterfall3DDisplayPlot

$ ./usrp2_display.py

Traceback (most recent call last):
File “./usrp2_display.py”, line 27, in
from gnuradio.qtgui import qtgui
File
“/usr/local/lib64/python2.6/site-packages/gnuradio/qtgui/qtgui.py”, line
24, in
_qtgui = swig_import_helper()
File
“/usr/local/lib64/python2.6/site-packages/gnuradio/qtgui/qtgui.py”, line
20, in swig_import_helper
_mod = imp.load_module(’_qtgui’, fp, pathname, description)
ImportError: /usr/local/lib64/libgnuradio-qtgui-3.4git.so.0: undefined
symbol: _ZTV22Waterfall3DDisplayPlot

Do you see a qtgui directory under your
$prefix/lib/python2.6/site-packages/gnuradio? If that’s there, then
you should be able to import it.

Yes, the qtgui folder is there and there are a couple of files in it.

If it’s not, then something’s gone
wrong in the build/install process. What OS are you running?

I’m running Fedora 12 x86 64-bit.

Best regards,

Elvis D.