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From: | Kleine, Kaleb |
Subject: | [Discuss-gnuradio] qtgui waterfall_sink_f in an OOT |
Date: | Tue, 31 Oct 2017 15:39:02 +0000 |
Hello, I am trying to create an OOT named myqt that contains a duplicate of the qtgui waterfall_sink_f but I am having what appears to be some linking issues. I created a new OOT with the gr_modtool then added a module named waterfall_sink_f.
I then replace the files generated in the lib and include folders with those in gnuradio/qtgui. I changed the namespace from qtgui to myqt and changed the <gnuradio/qtgui/waterfall_sink_f.h> and <gnuradio/qtgui/api.h> includes to <myqt/waterfall_sink_f.h>
and <myqt/api.h>. I also replace QTGUI_API with MYQT_API. I then modified the following cmake files ./CMakeLists.txt + find_package(Qt4 4.2.0 COMPONENTS QtCore QtGui) + find_package(Qwt 6.0.0) + include(GrSetupQt4) (I added FindQwt.cmake from gnuradio source to my OOT cmake/Modules) + added QWT and QT DIRS to library and incude ./lib/CMakeLists.txt + added ${QWT_LIBRARIES} ${QT_LIBRARIES} gnuradio-qtgui to the target link libraries With these changes the code compiles however when I run python myqt_swig.py I get the following :gr-myqt/build/swig$ python myqt_swig.py Traceback (most recent call last): File "myqt_swig.py", line 28, in <module> _myqt_swig = swig_import_helper() File "myqt_swig.py", line 24, in swig_import_helper _mod = imp.load_module('_myqt_swig', fp, pathname, description) ImportError: gr-myqt/build/lib/libgnuradio-myqt-1.0.0git.so.0.0.0: undefined symbol: _ZN20WaterfallDisplayForm13setUpdateTimeEd :gr-myqt/build/swig$ c++filt _ZN20WaterfallDisplayForm13setUpdateTimeEd WaterfallDisplayForm::setUpdateTime(double) I then run nm -gC on the shared library and get the following :gr-myqt/build/lib$ nm -gC libgnuradio-myqt-1.0.0git.so.0.0.0 | grep setUpdateTime U WaterfallDisplayForm::setUpdateTime(double) So it is undefined but I can’t seem to figure out how to fix that… any help would be greatly appreciated. Kaleb |
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