title: How to solve link error in Ubuntu?
body: <p>I want to build a Caffe project using make, and during build receive following error:</p>
  
  <pre><code>CXX/LD -o .build_release/tools/compute_image_mean.bin
  //usr/lib/x86_64-linux-gnu/libunwind.so.8: undefined reference to `lzma_index_size@XZ_5.0'
  //usr/lib/x86_64-linux-gnu/libunwind.so.8: undefined reference to `lzma_stream_footer_decode@XZ_5.0'
  //usr/lib/x86_64-linux-gnu/libunwind.so.8: undefined reference to `lzma_index_uncompressed_size@XZ_5.0'
  //usr/lib/x86_64-linux-gnu/libunwind.so.8: undefined reference to `lzma_stream_buffer_decode@XZ_5.0'
  //usr/lib/x86_64-linux-gnu/libunwind.so.8: undefined reference to `lzma_index_buffer_decode@XZ_5.0'
  //usr/lib/x86_64-linux-gnu/libunwind.so.8: undefined reference to `lzma_index_end@XZ_5.0'
  collect2: error: ld returned 1 exit status
  make: *** [.build_release/tools/compute_image_mean.bin] Error 1
  </code></pre>
  
  <p>I'm on Ubuntu 14.04 and trying to build Caffe with Anaconda.  I have installed everything according to installation tutorial.  In fact I have used it before, and I can't understand what problem is now.  I'm not a very experienced Linux-user so I don't know how to trace it.</p>
  
  <p>Can you give any hints how to solve it? </p>