e></span></dt><dd>
    Files that are used in constructing the library, but are not
    installed.

    <div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="filename">src/c++98</code></span></dt><dd>
    Source files compiled using <code class="option">-std=gnu++98</code>.
      </dd><dt><span class="term"><code class="filename">src/c++11</code></span></dt><dd>
    Source files compiled using <code class="option">-std=gnu++11</code>.
      </dd><dt><span class="term"><code 