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<h4 class="subsubsection">3.6.4.4 Input Section and Garbage Collection</h4>
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<p>When link-time garbage collection is in use (&lsquo;<samp>--gc-sections</samp>&rsquo;),
it is often useful to mark sections that should not be eliminated.
This is accomplished by surrounding an input section&rsquo;s wildcard entry
with <code>KEEP()</code>, as in <code>KEEP(*(.init))</code> or
<code>KEEP(SORT_BY_NAME(*)(.ctors))</code>.
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