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| <div class="section" id="checkcxxcompilerflag"> |
| <span id="module:CheckCXXCompilerFlag"></span><h1>CheckCXXCompilerFlag<a class="headerlink" href="#checkcxxcompilerflag" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Check whether the CXX compiler supports a given flag.</p> |
| <p>CHECK_CXX_COMPILER_FLAG(<flag> <var>)</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">flag</span><span class="o">></span> <span class="o">-</span> <span class="n">the</span> <span class="n">compiler</span> <span class="n">flag</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">the</span> <span class="n">result</span> |
| </pre></div> |
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| <p>This internally calls the check_cxx_source_compiles macro and sets |
| CMAKE_REQUIRED_DEFINITIONS to <flag>. See help for |
| CheckCXXSourceCompiles for a listing of variables that can otherwise |
| modify the build. The result only tells that the compiler does not |
| give an error message when it encounters the flag. If the flag has |
| any effect or even a specific one is beyond the scope of this module.</p> |
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