title: c++: error: unrecognized command line option ‘-std=gnu++14’
body: <p>I try to build the fblualib. However, when running build.sh I get the following error:</p>
  
  <pre><code>-- Found Folly: /usr/local/include  
  -- Found Torch7 in /home/dmus/torch/install
  -- Found Folly: /usr/local/include  
  -- Configuring done
  -- Generating done
  -- Build files have been written to: /home/dmus/fblualib/fblualib/build
  [ 25%] Building CXX object CMakeFiles/fblualib.dir/LuaUtils.cpp.o
  c++: error: unrecognized command line option ‘-std=gnu++14’
  make[2]: *** [CMakeFiles/fblualib.dir/LuaUtils.cpp.o] Error 1
  make[1]: *** [CMakeFiles/fblualib.dir/all] Error 2
  make: *** [all] Error 2
  </code></pre>
  
  <p>g++ --version outputs g++ (Ubuntu 4.8.4-2ubuntu1~14.04.1) 4.8.4. I see related questions, however I do not see how to fix this.</p>