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| <div class="section" id="findbison"> |
| <span id="module:FindBISON"></span><h1>FindBISON<a class="headerlink" href="#findbison" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Find <code class="docutils literal"><span class="pre">bison</span></code> executable and provide a macro to generate custom build rules.</p> |
| <p>The module defines the following variables:</p> |
| <dl class="docutils"> |
| <dt><code class="docutils literal"><span class="pre">BISON_EXECUTABLE</span></code></dt> |
| <dd>path to the <code class="docutils literal"><span class="pre">bison</span></code> program</dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_VERSION</span></code></dt> |
| <dd>version of <code class="docutils literal"><span class="pre">bison</span></code></dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_FOUND</span></code></dt> |
| <dd>true if the program was found</dd> |
| </dl> |
| <p>The minimum required version of <code class="docutils literal"><span class="pre">bison</span></code> can be specified using the |
| standard CMake syntax, e.g. <code class="docutils literal"><span class="pre">find_package(BISON</span> <span class="pre">2.1.3)</span></code>.</p> |
| <p>If <code class="docutils literal"><span class="pre">bison</span></code> is found, the module defines the macro:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">BISON_TARGET</span><span class="p">(</span><span class="o"><</span><span class="n">Name</span><span class="o">></span> <span class="o"><</span><span class="n">YaccInput</span><span class="o">></span> <span class="o"><</span><span class="n">CodeOutput</span><span class="o">></span> |
| <span class="p">[</span><span class="n">COMPILE_FLAGS</span> <span class="o"><</span><span class="n">flags</span><span class="o">></span><span class="p">]</span> |
| <span class="p">[</span><span class="n">DEFINES_FILE</span> <span class="o"><</span><span class="n">file</span><span class="o">></span><span class="p">]</span> |
| <span class="p">[</span><span class="n">VERBOSE</span> <span class="p">[</span><span class="o"><</span><span class="n">file</span><span class="o">></span><span class="p">]]</span> |
| <span class="p">[</span><span class="n">REPORT_FILE</span> <span class="o"><</span><span class="n">file</span><span class="o">></span><span class="p">]</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>which will create a custom rule to generate a parser. <code class="docutils literal"><span class="pre"><YaccInput></span></code> is |
| the path to a yacc file. <code class="docutils literal"><span class="pre"><CodeOutput></span></code> is the name of the source file |
| generated by bison. A header file is also be generated, and contains |
| the token list.</p> |
| <p>The options are:</p> |
| <dl class="docutils"> |
| <dt><code class="docutils literal"><span class="pre">COMPILE_FLAGS</span> <span class="pre"><flags></span></code></dt> |
| <dd>Specify flags to be added to the <code class="docutils literal"><span class="pre">bison</span></code> command line.</dd> |
| <dt><code class="docutils literal"><span class="pre">DEFINES_FILE</span> <span class="pre"><file></span></code></dt> |
| <dd>Specify a non-default header <code class="docutils literal"><span class="pre"><file></span></code> to be generated by <code class="docutils literal"><span class="pre">bison</span></code>.</dd> |
| <dt><code class="docutils literal"><span class="pre">VERBOSE</span> <span class="pre">[<file>]</span></code></dt> |
| <dd>Tell <code class="docutils literal"><span class="pre">bison</span></code> to write a report file of the grammar and parser. |
| If <code class="docutils literal"><span class="pre"><file></span></code> is given, it specifies path the report file is copied to. |
| <code class="docutils literal"><span class="pre">[<file>]</span></code> is left for backward compatibility of this module. |
| Use <code class="docutils literal"><span class="pre">VERBOSE</span> <span class="pre">REPORT_FILE</span> <span class="pre"><file></span></code>.</dd> |
| <dt><code class="docutils literal"><span class="pre">REPORT_FILE</span> <span class="pre"><file></span></code></dt> |
| <dd>Specify a non-default report <code class="docutils literal"><span class="pre"><file></span></code>, if generated.</dd> |
| </dl> |
| <p>The macro defines the following variables:</p> |
| <dl class="docutils"> |
| <dt><code class="docutils literal"><span class="pre">BISON_<Name>_DEFINED</span></code></dt> |
| <dd>true is the macro ran successfully</dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_<Name>_INPUT</span></code></dt> |
| <dd>The input source file, an alias for <YaccInput></dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_<Name>_OUTPUT_SOURCE</span></code></dt> |
| <dd>The source file generated by bison</dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_<Name>_OUTPUT_HEADER</span></code></dt> |
| <dd>The header file generated by bison</dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_<Name>_OUTPUTS</span></code></dt> |
| <dd>All files generated by bison including the source, the header and the report</dd> |
| <dt><code class="docutils literal"><span class="pre">BISON_<Name>_COMPILE_FLAGS</span></code></dt> |
| <dd>Options used in the <code class="docutils literal"><span class="pre">bison</span></code> command line</dd> |
| </dl> |
| <p>Example usage:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">find_package</span><span class="p">(</span><span class="s">BISON</span><span class="p">)</span> |
| <span class="nb">BISON_TARGET</span><span class="p">(</span><span class="s">MyParser</span> <span class="s">parser.y</span> <span class="o">${</span><span class="nv">CMAKE_CURRENT_BINARY_DIR</span><span class="o">}</span><span class="s">/parser.cpp</span> |
| <span class="s">DEFINES_FILE</span> <span class="o">${</span><span class="nv">CMAKE_CURRENT_BINARY_DIR</span><span class="o">}</span><span class="s">/parser.h</span><span class="p">)</span> |
| <span class="nb">add_executable</span><span class="p">(</span><span class="s">Foo</span> <span class="s">main.cpp</span> <span class="o">${</span><span class="nv">BISON_MyParser_OUTPUTS</span><span class="o">}</span><span class="p">)</span> |
| </pre></div> |
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