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| <div class="section" id="cmakedependentoption"> |
| <span id="module:CMakeDependentOption"></span><h1>CMakeDependentOption<a class="headerlink" href="#cmakedependentoption" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Macro to provide an option dependent on other options.</p> |
| <p>This macro presents an option to the user only if a set of other |
| conditions are true. When the option is not presented a default value |
| is used, but any value set by the user is preserved for when the |
| option is presented again. Example invocation:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">CMAKE_DEPENDENT_OPTION</span><span class="p">(</span><span class="n">USE_FOO</span> <span class="s2">"Use Foo"</span> <span class="n">ON</span> |
| <span class="s2">"USE_BAR;NOT USE_ZOT"</span> <span class="n">OFF</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>If USE_BAR is true and USE_ZOT is false, this provides an option |
| called USE_FOO that defaults to ON. Otherwise, it sets USE_FOO to |
| OFF. If the status of USE_BAR or USE_ZOT ever changes, any value for |
| the USE_FOO option is saved so that when the option is re-enabled it |
| retains its old value.</p> |
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