title: How do I enable SSE2 from the command line
body: <p>I'm compiling Dlib's Python Examples.</p>
  
  <p>The compile script is:</p>
  
  <pre><code>mkdir build
  cd build
  cmake ../../tools/python 
  cmake --build . --config Release --target install  
  cd ..
  </code></pre>
  
  <p>How do I enable SSE2 from the command line? I tried adding the argument -USE_SSE2_INSTRUCTIONS=ON but got unknown argument error.</p>
  
  <p>From Cmake cache file:</p>
  
  <pre><code>//Compile your program with SSE2 instructions
  USE_SSE2_INSTRUCTIONS:BOOL=OFF
  </code></pre>