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| <div class="section" id="cmakeaddfortransubdirectory"> |
| <span id="module:CMakeAddFortranSubdirectory"></span><h1>CMakeAddFortranSubdirectory<a class="headerlink" href="#cmakeaddfortransubdirectory" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Use MinGW gfortran from VS if a fortran compiler is not found.</p> |
| <p>The ‘add_fortran_subdirectory’ function adds a subdirectory to a |
| project that contains a fortran only sub-project. The module will |
| check the current compiler and see if it can support fortran. If no |
| fortran compiler is found and the compiler is MSVC, then this module |
| will find the MinGW gfortran. It will then use an external project to |
| build with the MinGW tools. It will also create imported targets for |
| the libraries created. This will only work if the fortran code is |
| built into a dll, so BUILD_SHARED_LIBS is turned on in the project. |
| In addition the CMAKE_GNUtoMS option is set to on, so that the MS .lib |
| files are created. Usage is as follows:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">cmake_add_fortran_subdirectory</span><span class="p">(</span> |
| <span class="o"><</span><span class="n">subdir</span><span class="o">></span> <span class="c1"># name of subdirectory</span> |
| <span class="n">PROJECT</span> <span class="o"><</span><span class="n">project_name</span><span class="o">></span> <span class="c1"># project name in subdir top CMakeLists.txt</span> |
| <span class="n">ARCHIVE_DIR</span> <span class="o"><</span><span class="nb">dir</span><span class="o">></span> <span class="c1"># dir where project places .lib files</span> |
| <span class="n">RUNTIME_DIR</span> <span class="o"><</span><span class="nb">dir</span><span class="o">></span> <span class="c1"># dir where project places .dll files</span> |
| <span class="n">LIBRARIES</span> <span class="o"><</span><span class="n">lib</span><span class="o">>...</span> <span class="c1"># names of library targets to import</span> |
| <span class="n">LINK_LIBRARIES</span> <span class="c1"># link interface libraries for LIBRARIES</span> |
| <span class="p">[</span><span class="n">LINK_LIBS</span> <span class="o"><</span><span class="n">lib</span><span class="o">></span> <span class="o"><</span><span class="n">dep</span><span class="o">>...</span><span class="p">]</span><span class="o">...</span> |
| <span class="n">CMAKE_COMMAND_LINE</span> <span class="o">...</span> <span class="c1"># extra command line flags to pass to cmake</span> |
| <span class="n">NO_EXTERNAL_INSTALL</span> <span class="c1"># skip installation of external project</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Relative paths in ARCHIVE_DIR and RUNTIME_DIR are interpreted with |
| respect to the build directory corresponding to the source directory |
| in which the function is invoked.</p> |
| <p>Limitations:</p> |
| <p>NO_EXTERNAL_INSTALL is required for forward compatibility with a |
| future version that supports installation of the external project |
| binaries during “make install”.</p> |
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