title: "Undefined symbols for architecture x86_64:"
body: <p>I am attempting to compile this library on mac os x Mavericks 10.9.3 64-bit: <a href="http://www.openfec.org/downloads.html" rel="noreferrer">http://www.openfec.org/downloads.html</a></p>
  
  <p>I followed the README exactly, and got this error:</p>
  
  <blockquote>
    <p>Linking C shared library ../../bin/Release/libopenfec.dylib</p>
  
  <pre><code>   Undefined symbols for architecture x86_64:
        "_of_add_from_multiple_symbols", referenced from:
           _of_linear_binary_code_backward_substitution in of_ml_tool.c.o
        "_of_add_to_symbol", referenced from:
           _of_linear_binary_code_decode_with_new_symbol in of_it_decoding.c.o
           _of_linear_binary_code_simplify_linear_system in of_ml_decoding.c.o
           _of_linear_binary_code_col_forward_elimination_pivot_reordering in of_ml_tool.c.o
           _of_linear_binary_code_apply_gauss_pivoting in of_ml_tool_2.c.o
           _of_linear_binary_code_inject_symbol_in_triangular_system in of_ml_tool_2.c.o
           _of_linear_binary_code_solve_triangular_system in of_ml_tool_2.c.o
           _of_linear_binary_code_invert_dense_system in of_ml_tool_2.c.o
           ...
        "_of_calloc", referenced from...:
           ...
  </code></pre>
    
    <p>ld: symbol(s) not found for architecture x86_64<br>
    clang: error: linker command failed with exit code 1 (use -v to see invocation)<br>
    make[2]: <strong>* [../bin/Release/libopenfec.dylib] Error 1<br>
    make[1]: *</strong> [src/CMakeFiles/openfec.dir/all] Error 2<br>
    make: *** [all] Error 2</p>
  </blockquote>
  
  <p>I simply followed the README for OpenFEC's distro (found at <a href="http://www.openfec.org/downloads.html" rel="noreferrer">http://www.openfec.org/downloads.html</a>). When attempting to make, this error arises.
  I have no idea what the problem is.</p>
  
  <p>This is what I did after untarring the distribution:<br>
  (1.): mkdir build<br>
  (2.): cd build<br>
  (3.): cmake .. -DDEBUG:STRING=OFF<br>
  (4.): make</p>
  
  <p>Any ideas?</p>
  
  <p>Edit: Attempted to force cmake to use 64-bit, still didn't work.<br>
  (Tried to force it into 32-bit just for kicks, also didn't work)</p>