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<div class="section" id="aux-source-directory">
<span id="command:aux_source_directory"></span><h1>aux_source_directory<a class="headerlink" href="#aux-source-directory" title="Permalink to this headline">ΒΆ</a></h1>
<p>Find all source files in a directory.</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">aux_source_directory</span><span class="p">(</span><span class="o">&lt;</span><span class="nb">dir</span><span class="o">&gt;</span> <span class="o">&lt;</span><span class="n">variable</span><span class="o">&gt;</span><span class="p">)</span>
</pre></div>
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<p>Collects the names of all the source files in the specified directory
and stores the list in the <code class="docutils literal"><span class="pre">&lt;variable&gt;</span></code> provided. This command is
intended to be used by projects that use explicit template
instantiation. Template instantiation files can be stored in a
&#8220;Templates&#8221; subdirectory and collected automatically using this
command to avoid manually listing all instantiations.</p>
<p>It is tempting to use this command to avoid writing the list of source
files for a library or executable target. While this seems to work,
there is no way for CMake to generate a build system that knows when a
new source file has been added. Normally the generated build system
knows when it needs to rerun CMake because the CMakeLists.txt file is
modified to add a new source. When the source is just added to the
directory without modifying this file, one would have to manually
rerun CMake to generate a build system incorporating the new file.</p>
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