On Thu, Aug 25, 2011 at 09:57:30AM -0300, Felipe Fideles wrote: > Hello All, > > I'm trying to use FFTW in the development of a new signal processing block. > The ./boostrap and ./configure commands work fine, but when I type the make > command, I get the following error: > > /usr/src/gnuradio/gr-deteccao/lib/.libs/libgnuradio-deteccao.so: undefined > reference to `fftw_execute' > /usr/src/gnuradio/gr-deteccao/lib/.libs/libgnuradio-deteccao.so: undefined > reference to `fftw_plan_dft_1d' > /usr/src/gnuradio/gr-deteccao/lib/.libs/libgnuradio-deteccao.so: undefined > reference to `fftw_destroy_plan' > collect2: ld returned 1 exit status > > It sounds weird because the fftw in already at the gnuradio files.
That doesn't mean FFTW gets linked to your new blocks. Like any other library, you still have to set the linker settings. 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
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