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| <span id="policy:CMP0009"></span><h1>CMP0009<a class="headerlink" href="#cmp0009" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>FILE GLOB_RECURSE calls should not follow symlinks by default.</p> |
| <p>In CMake 2.6.1 and below, <span class="target" id="index-0-command:file"></span><a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">file(GLOB_RECURSE)</span></code></a> calls would follow |
| through symlinks, sometimes coming up with unexpectedly large result sets |
| because of symlinks to top level directories that contain hundreds of |
| thousands of files.</p> |
| <p>This policy determines whether or not to follow symlinks encountered |
| during a <span class="target" id="index-1-command:file"></span><a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">file(GLOB_RECURSE)</span></code></a> call. The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this |
| policy is to follow the symlinks. The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior for this policy is not |
| to follow the symlinks by default, but only if <code class="docutils literal notranslate"><span class="pre">FOLLOW_SYMLINKS</span></code> is given |
| as an additional argument to the <code class="docutils literal notranslate"><span class="pre">FILE</span></code> command.</p> |
| <p>This policy was introduced in CMake version 2.6.2. CMake version |
| 3.23.1 warns when the policy is not set and uses <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior. Use |
| the <span class="target" id="index-0-command:cmake_policy"></span><a class="reference internal" href="../command/cmake_policy.html#command:cmake_policy" title="cmake_policy"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">cmake_policy()</span></code></a> command to set it to <code class="docutils literal notranslate"><span class="pre">OLD</span></code> or <code class="docutils literal notranslate"><span class="pre">NEW</span></code> explicitly.</p> |
| <div class="admonition note"> |
| <p class="admonition-title">Note</p> |
| <p>The <code class="docutils literal notranslate"><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 notranslate"><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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