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| <div class="section" id="cmp0005"> |
| <span id="policy:CMP0005"></span><h1>CMP0005<a class="headerlink" href="#cmp0005" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Preprocessor definition values are now escaped automatically.</p> |
| <p>This policy determines whether or not CMake should generate escaped |
| preprocessor definition values added via add_definitions. CMake |
| versions 2.4 and below assumed that only trivial values would be given |
| for macros in add_definitions calls. It did not attempt to escape |
| non-trivial values such as string literals in generated build rules. |
| CMake versions 2.6 and above support escaping of most values, but |
| cannot assume the user has not added escapes already in an attempt to |
| work around limitations in earlier versions.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this policy is to place definition values given |
| to add_definitions directly in the generated build rules without |
| attempting to escape anything. The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior for this policy is to |
| generate correct escapes for all native build tools automatically. |
| See documentation of the <code class="docutils literal notranslate"><span class="pre">COMPILE_DEFINITIONS</span></code> target property for |
| limitations of the escaping implementation.</p> |
| <p>This policy was introduced in CMake version 2.6.0. 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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