 interesting arguments recognized by CMake.

<dl>
<dt><code>-DCMAKE_INSTALL_PREFIX=<i>directory</i></code></dt>
<dd>
This option specifies the directory to which H2O will be installed (default: <code>/usr/local</code>).
</dd>
<dt><code>-DWITH_MRUBY=<i>on</i>|<i>off</i></code></dt>
<dd>
This option instructs whether or not to build the standalone server with support for <a href="configure/mruby.html">scripting using mruby</a>.
It is turned on by default if the prerequisites (<a href="https://www.gnu.org/soft