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| <div class="section" id="checkcxxsourcecompiles"> |
| <span id="module:CheckCXXSourceCompiles"></span><h1>CheckCXXSourceCompiles<a class="headerlink" href="#checkcxxsourcecompiles" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Check if given C++ source compiles and links into an executable</p> |
| <p>CHECK_CXX_SOURCE_COMPILES(<code> <var> [FAIL_REGEX <fail-regex>])</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">code</span><span class="o">></span> <span class="o">-</span> <span class="n">source</span> <span class="n">code</span> <span class="n">to</span> <span class="k">try</span> <span class="n">to</span> <span class="nb">compile</span><span class="p">,</span> <span class="n">must</span> <span class="n">define</span> <span class="s1">'main'</span> |
| <span class="o"><</span><span class="n">var</span><span class="o">></span> <span class="o">-</span> <span class="n">variable</span> <span class="n">to</span> <span class="n">store</span> <span class="n">whether</span> <span class="n">the</span> <span class="n">source</span> <span class="n">code</span> <span class="n">compiled</span> |
| <span class="n">Will</span> <span class="n">be</span> <span class="n">created</span> <span class="k">as</span> <span class="n">an</span> <span class="n">internal</span> <span class="n">cache</span> <span class="n">variable</span><span class="o">.</span> |
| <span class="o"><</span><span class="n">fail</span><span class="o">-</span><span class="n">regex</span><span class="o">></span> <span class="o">-</span> <span class="n">fail</span> <span class="k">if</span> <span class="n">test</span> <span class="n">output</span> <span class="n">matches</span> <span class="n">this</span> <span class="n">regex</span> |
| </pre></div> |
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| <p>The following variables may be set before calling this macro to modify |
| the way the check is run:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">CMAKE_REQUIRED_FLAGS</span> <span class="o">=</span> <span class="n">string</span> <span class="n">of</span> <span class="nb">compile</span> <span class="n">command</span> <span class="n">line</span> <span class="n">flags</span> |
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| <span class="n">CMAKE_REQUIRED_QUIET</span> <span class="o">=</span> <span class="n">execute</span> <span class="n">quietly</span> <span class="n">without</span> <span class="n">messages</span> |
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