On Mon, Dec 9, 2013 at 9:53 AM, James Austin <ka2...@gmail.com> wrote: > Hi Martin, > > I did look through the CMake documentation and was trying different things > with the target_link_libraries tag, with no success. > > What I am trying to do is (and this may be a solved problem already) build a > gnuradio block for the RFSpaces SDR-IQ receiver. This is mostly for me to > become more familiar with Linux programming and to learn more about Python. > > I wrote a library that is able to retrieve data from the SDR-IQ and it is > called libsdriq.a, now I want to use that library with gnuradio. Following > the gnuradio tutorial on out of tree blocks, I created a block called > gr-sdriq and it works fine with dummy data, has a complex output port and > outputs a cosine and sine to the real and imaginary parts and I can see the > data as expected in gnuradio. My problem is getting the gnuradio block to > use my libsdriq.a library and that is where things are breaking. Compiling > is not a problem, but linking is not producing a gnuradio block that > includes my libsdriq.a. > > I've looked through some gnuradio blocks to see if I could find something > similar and through CMake documentation. This is likely solved through > CMake, but haven't figured it out yet. > > Jim
Jim, You're on the right track with using the target_link_libraries. I think your mail problem is using an archive library (the libsdriq.a). While it's possible, you don't really want to use a static archive like that. Look into building that into a shared object library (.so) instead. That will be easier to use with the cmake tools. Also, when asking questions about a problem you're having, providing us with the error results you're seeing would help us help you better. Tom > On Sun, Dec 8, 2013 at 9:24 AM, Martin Braun (CEL) <martin.br...@kit.edu> > wrote: >> >> On Sat, Dec 07, 2013 at 08:40:45PM -0500, James Austin wrote: >> > I'm a long time Windows programmer trying to write a gnuradio module to >> > improve >> > my Linux development skills. >> > >> > I created a gnuradio module following the tutorial that just sends dummy >> > data >> > back to gnuradio. That works fine, I can plot the dummy data in my >> > flowgraph >> > and it works and displays as expected. >> > >> > I also created a static library that produces data, no reason I can't >> > make it a >> > shared library if that is the solution. >> > >> > My problem is trying to get the gnuradio module to link against the >> > static >> > library, so that the data produced by this library can be fed into >> > gnuradio. I >> > haven't been able to figure out the cmake magic to make this happen. I >> > get a >> > variety of error messages on everything I try. >> > >> > Does anyone have any hints to get me past this? >> >> Hey Jim, >> >> you're not giving us much to work on here. You might want to specify >> what exactly you're linking to, and what you've tried. >> >> What you're trying to do seems like a cmake problem, so checking cmake >> tutorials (unrelated to GNU Radio) might help. >> >> Most often, you want your C++ blocks to access some library. This would >> mean editing the lib/CMakeLists.txt file to make sure you're linking to >> the right libs. >> >> MB >> >> -- >> Karlsruhe Institute of Technology (KIT) >> Communications Engineering Lab (CEL) >> >> Dipl.-Ing. Martin Braun >> Research Associate >> >> Kaiserstraße 12 >> Building 05.01 >> 76131 Karlsruhe >> >> Phone: +49 721 608-43790 >> Fax: +49 721 608-46071 >> www.cel.kit.edu >> >> KIT -- University of the State of Baden-Württemberg and >> National Laboratory of the Helmholtz Association _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
