title: CMake Error: failed to create symbolic link '../../lib/libcaffe.so': function not implemented
body: <p>I am trying to build openpose on google colab, and I have Cmake configuration was done, and when it comes to make, I used </p>
  
  <pre><code>make -j4 all 
  </code></pre>
  
  <p>it popped an error, here is the error:</p>
  
  <pre><code>[ 84%] Linking CXX shared library ../../lib/libcaffe.so
  CMake Error: failed to create symbolic link '../../lib/libcaffe.so':  function not implemented
  CMake Error: cmake_symlink_library: System Error: Function not  implemented
  src/caffe/CMakeFiles/caffe.dir/build.make:2215: recipe for target 'lib/libcaffe.so.1.0.0' failed
  make[5]: *** [lib/libcaffe.so.1.0.0] Error 1
  make[5]: *** Deleting file 'lib/libcaffe.so.1.0.0'
  CMakeFiles/Makefile2:240: recipe for target 'src/caffe/CMakeFiles/caffe.dir/all' failed
  make[4]: *** [src/caffe/CMakeFiles/caffe.dir/all] Error 2
  Makefile:129: recipe for target 'all' failed
  make[3]: *** [all] Error 2
  CMakeFiles/openpose_lib.dir/build.make:110: recipe for target 'caffe/src/openpose_lib-stamp/openpose_lib-build' failed
  make[2]: *** [caffe/src/openpose_lib-stamp/openpose_lib-build] Error 2
  CMakeFiles/Makefile2:72: recipe for target   'CMakeFiles/openpose_lib.dir/all' failed
  make[1]: *** [CMakeFiles/openpose_lib.dir/all] Error 2
  Makefile:83: recipe for target 'all' failed
  make: *** [all] Error 2
  </code></pre>
  
  <p>How to solve this problem?</p>