<p>In <a href="https://github.com/mlpack/mlpack/pull/700#discussion_r69965711">CMakeLists.txt</a>:</p>
<pre style='color:#555'>> find_package(OpenMP)
> if (OPENMP_FOUND)
> + add_definitions(-DHAS_OPENMP)
> + set(HAS_OPENMP "1")
</pre>
<p>I'm not sure if the CMake variable <code>HAS_OPENMP</code> is necessary; it doesn't look like it's used anywhere. Maybe I overlooked something?</p>
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