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  <section id="checkstructhasmember">
<span id="module:CheckStructHasMember"></span><h1>CheckStructHasMember<a class="headerlink" href="#checkstructhasmember" title="Permalink to this heading">¶</a></h1>
<p>Check if the given struct or class has the specified member variable</p>
<dl class="cmake command">
<dt class="sig sig-object cmake" id="command:check_struct_has_member">
<span class="sig-name descname"><span class="pre">CHECK_STRUCT_HAS_MEMBER</span></span><a class="headerlink" href="#command:check_struct_has_member" title="Permalink to this definition">¶</a></dt>
<dd><div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">CHECK_STRUCT_HAS_MEMBER(</span><span class="nv">&lt;struct&gt;</span><span class="w"> </span><span class="nv">&lt;member&gt;</span><span class="w"> </span><span class="nv">&lt;header&gt;</span><span class="w"> </span><span class="nv">&lt;variable&gt;</span><span class="w"></span>
<span class="w">                        </span><span class="p">[</span><span class="no">LANGUAGE</span><span class="w"> </span><span class="nv">&lt;language&gt;</span><span class="p">]</span><span class="nf">)</span><span class="w"></span>
</pre></div>
</div>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>&lt;struct&gt; - the name of the struct or class you are interested in
&lt;member&gt; - the member which existence you want to check
&lt;header&gt; - the header(s) where the prototype should be declared
&lt;variable&gt; - variable to store the result
&lt;language&gt; - the compiler to use (C or CXX)
</pre></div>
</div>
</dd></dl>

<p>The following variables may be set before calling this macro to modify
the way the check is run:</p>
<dl>
<dt><code class="docutils literal notranslate"><span class="pre">CMAKE_REQUIRED_FLAGS</span></code></dt><dd><p>string of compile command line flags.</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">CMAKE_REQUIRED_DEFINITIONS</span></code></dt><dd><p>list of macros to define (-DFOO=bar).</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">CMAKE_REQUIRED_INCLUDES</span></code></dt><dd><p>list of include directories.</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">CMAKE_REQUIRED_LINK_OPTIONS</span></code></dt><dd><div class="versionadded">
<p><span class="versionmodified added">New in version 3.14: </span>list of options to pass to link command.</p>
</div>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">CMAKE_REQUIRED_LIBRARIES</span></code></dt><dd><p>list of libraries to link.</p>
</dd>
<dt><code class="docutils literal notranslate"><span class="pre">CMAKE_REQUIRED_QUIET</span></code></dt><dd><div class="versionadded">
<p><span class="versionmodified added">New in version 3.1: </span>execute quietly without messages.</p>
</div>
</dd>
</dl>
<p>Example:</p>
<div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">CHECK_STRUCT_HAS_MEMBER(</span><span class="s">&quot;struct timeval&quot;</span><span class="w"> </span><span class="nb">tv_sec</span><span class="w"> </span><span class="na">sys/select.h</span><span class="w"></span>
<span class="w">                        </span><span class="no">HAVE_TIMEVAL_TV_SEC</span><span class="w"> </span><span class="no">LANGUAGE</span><span class="w"> </span><span class="no">C</span><span class="nf">)</span><span class="w"></span>
</pre></div>
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