On Wed, Dec 19, 2012 at 2:56 AM, Daniel Labarowski <labarowsk...@gmail.com>wrote:
> Thanks for the replies guys. Tom, I have modified this flowgraph > (extensively) from one of the examples and have been using its > CMakeLists.txt file (modifying it along the way of course). The commands > that I use to build it are > > mkdir build >> cd build >> cmake ../ >> make >> > > I believe that -l gnuradio-qtgui would be for g++. Since I am not using > g++ directly I tried adding the following to my CMakeLists.txt file. > > > # libgnuradio-qtgui.so >> #find_package(gnuradio-qtgui) >> include_directories(/usr/**local/lib) >> > > When the find_package command did not work, I commented it out and > included the directory absolutely. I have had to do this a lot lately. Some > of the library variables seem to have not gotten set by the build script > (granted, this build is from the summer). Unfortunately I am still getting > the > > undefined reference to `qtgui_make_sink_c(int, int, double, double, >> std::basic_string<char, std::char_traits<char>, std::allocator<char> > >> const&, bool, bool, bool, bool, QWidget*)' >> > > error. My syntax is > > qtgui_sink_c_sptr qtsink = qtgui_make_sink_c (fftsize, >> gr_firdes::WIN_HAMMING, 0, 1.0, "Spectrum Display", true, true, true, true, >> NULL); >> > > I am including the following relevant components > > #include <qtgui_sink_c.h> >> #include <QApplication> >> #include <QWidget> >> > > Can anyone spot my mistake? > > -Dan > Hi Dan, The problem is not in the includes, its in the linking library. Try using: target_link_libraries(<target to build> <list of libraries like gnuradio-qtgui>) Tom
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