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<div class="section" id="variable-watch">
<span id="command:variable_watch"></span><h1>variable_watch<a class="headerlink" href="#variable-watch" title="Permalink to this headline">ΒΆ</a></h1>
<p>Watch the CMake variable for change.</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">variable_watch</span><span class="p">(</span><span class="o">&lt;</span><span class="n">variable</span> <span class="n">name</span><span class="o">&gt;</span> <span class="p">[</span><span class="o">&lt;</span><span class="n">command</span> <span class="n">to</span> <span class="n">execute</span><span class="o">&gt;</span><span class="p">])</span>
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<p>If the specified variable changes, the message will be printed about
the variable being changed. If the command is specified, the command
will be executed. The command will receive the following arguments:
COMMAND(&lt;variable&gt; &lt;access&gt; &lt;value&gt; &lt;current list file&gt; &lt;stack&gt;)</p>
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