Help with gr-trellis

Hello Everyone,

To test my code, I am porting
gnuradio/gr-trellis/examples/python/test_tcm.py to c++, and encountering
an
error with the trellis fsm constructor.

I tried creating an fsm object:

const char* fsm_filename = “fsm_files/awgn1o2_4.fsm”;
gr::trellis::fsm *f = new gr::trellis::fsm(fsm_filename);

When I compile, i get the following error:


CMakeFiles/tcm.dir/tcm.cc.o: In function main': /home/tjt7a/src/GR-Router/apps/tcm.cc:71: undefined reference togr::trellis::fsm::fsm(char const*)’
collect2: error: ld returned 1 exit status
make[2]: *** [apps/tcm] Error 1
make[1]: *** [apps/CMakeFiles/tcm.dir/all] Error 2
make: *** [all] Error 2

The following entry exists in the include file:

namespace gr {
namespace trellis {

/*!
 * \brief  Finite State Machine Specification class.
 * \ingroup trellis_coding_blk
 *
 * \details
 * An instance of this class represents a finite state machine
 * specification (FSMS) rather than the FSM itself.  It particular
 * the state of the FSM is not stored within an instance of this
 * class.
 */
class TRELLIS_API fsm
{

public:

  /*!
   * \brief Constructor to create an FSMS from file contents.
   *
   * \param name        filename
   *
   */
  fsm(const char *name);

On Thu, Jun 5, 2014 at 7:12 PM, Tommy T. [email protected] wrote:


make: *** [all] Error 2
*


It doesn’t seem to recognize the constructor… am I calling it wrong?


Sincerely,
Tommy T. II
UVA

This is probably just a cmake linking issue. Check to make sure you’re
properly setting the include directories and linking to the
gnuradio-trellis in the CMakeLists.txt file.

Tom

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