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   <div class="section" id="cmp0004">
 <span id="policy:CMP0004"></span><h1>CMP0004<a class="headerlink" href="#cmp0004" title="Permalink to this headline">¶</a></h1>
 <p>Libraries linked may not have leading or trailing whitespace.</p>
 <p>CMake versions 2.4 and below silently removed leading and trailing
 whitespace from libraries linked with code like</p>
 <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">target_link_libraries</span><span class="p">(</span><span class="n">myexe</span> <span class="s2">&quot; A &quot;</span><span class="p">)</span>
 </pre></div>
 </div>
 <p>This could lead to subtle errors in user projects.</p>
 <p>The OLD behavior for this policy is to silently remove leading and
 trailing whitespace.  The NEW behavior for this policy is to diagnose
 the existence of such whitespace as an error.  The setting for this
 policy used when checking the library names is that in effect when the
 target is created by an add_executable or add_library command.</p>
 <p>This policy was introduced in CMake version 2.6.0.  CMake version
 3.8.2 warns when the policy is not set and uses OLD behavior.  Use
 the cmake_policy command to set it to OLD or NEW explicitly.</p>
 <div class="admonition note">
 <p class="first admonition-title">Note</p>
 <p class="last">The <code class="docutils literal"><span class="pre">OLD</span></code> behavior of a policy is
 <span class="target" id="index-0-manual:cmake-policies(7)"></span><a class="reference internal" href="../manual/cmake-policies.7.html#manual:cmake-policies(7)" title="cmake-policies(7)"><code class="xref cmake cmake-manual docutils literal"><span class="pre">deprecated</span> <span class="pre">by</span> <span class="pre">definition</span></code></a>
 and may be removed in a future version of CMake.</p>
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	<div class="section" id="cmp0004">
	<span id="policy:CMP0004"></span><h1>CMP0004<a class="headerlink" href="#cmp0004" title="Permalink to this headline">¶</a></h1>
	<p>Libraries linked may not have leading or trailing whitespace.</p>
	<p>CMake versions 2.4 and below silently removed leading and trailing
	whitespace from libraries linked with code like</p>
	<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">target_link_libraries</span><span class="p">(</span><span class="n">myexe</span> <span class="s2">" A "</span><span class="p">)</span>
	</pre></div>
	</div>
	<p>This could lead to subtle errors in user projects.</p>
	<p>The OLD behavior for this policy is to silently remove leading and
	trailing whitespace. The NEW behavior for this policy is to diagnose
	the existence of such whitespace as an error. The setting for this
	policy used when checking the library names is that in effect when the
	target is created by an add_executable or add_library command.</p>
	<p>This policy was introduced in CMake version 2.6.0. CMake version
	3.8.2 warns when the policy is not set and uses OLD behavior. Use
	the cmake_policy command to set it to OLD or NEW explicitly.</p>
	<div class="admonition note">
	<p class="first admonition-title">Note</p>
	<p class="last">The <code class="docutils literal"><span class="pre">OLD</span></code> behavior of a policy is
	<span class="target" id="index-0-manual:cmake-policies(7)"></span><a class="reference internal" href="../manual/cmake-policies.7.html#manual:cmake-policies(7)" title="cmake-policies(7)"><code class="xref cmake cmake-manual docutils literal"><span class="pre">deprecated</span> <span class="pre">by</span> <span class="pre">definition</span></code></a>
	and may be removed in a future version of CMake.</p>
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