<p>In <a href="https://github.com/mlpack/mlpack/pull/693#discussion_r67235116">src/mlpack/methods/neighbor_search/ns_model.hpp</a>:</p>
<pre style='color:#555'>> @@ -13,12 +13,24 @@
> #include <mlpack/core/tree/binary_space_tree.hpp>
> #include <mlpack/core/tree/cover_tree.hpp>
> #include <mlpack/core/tree/rectangle_tree.hpp>
> -
> +#include <boost/variant.hpp>
</pre>
<p>I can see a note about this in boost's documentation: <a href="http://www.boost.org/doc/libs/1_61_0/more/getting_started/unix-variants.html#id19">[ref]</a><br>
"<strong>Other Packages</strong><br>
RedHat, Debian, and other distribution packagers supply Boost library packages, however you may need to adapt these instructions if you use third-party packages, because their creators usually choose to break Boost up into several packages, reorganize the directory structure of the Boost distribution, and/or rename the library binaries. If you have any trouble, we suggest using an official Boost distribution from SourceForge. "</p>
<p>I am not sure. But it looks like all partial packages depends on libboost-dev package, so they will finally include all headers files.<br>
For example: libboost-program-options-dev <em>--depends on--></em> libbooost-dev</p>
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