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| <title>THE BOOST MPL LIBRARY: Portability</title> |
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| <div class="section" id="portability"> |
| <h1><a class="toc-backref" href="./technical-details.html#id73" name="portability">Portability</a></h1> |
| <p>It has always been a major goal of MPL development that a program |
| using the MPL should compile and run without modification on a wide |
| variety of compilers. To this end, the library goes to great |
| lengths to hide the quirks of less-than-perfect compilers. Of |
| course, there is only that much that you can do about an utterly |
| broken compiler. This section describes the places where those |
| quirks "leak out" of the library abstraction layer, and what you can |
| do about it when they do.</p> |
| <p>With respect to MPL compatibility we divide C++ compilers roughly |
| into three categories:</p> |
| <ol class="upperalpha simple"> |
| <li>Reasonably conforming compilers that "just work" with the MPL.</li> |
| <li>Not-so-conforming compilers that work but require some workarounds in user code.</li> |
| <li>Compilers that are so broken that it's not practical to use them for any serious |
| metaprogramming work.</li> |
| </ol> |
| <p>We haven't tested every compiler in existence (simply because we don't have access to |
| all of them), but chances are the table below |
| will give you the information you are looking for. Please note that |
| the fact that one version of a compiler appears |
| in this list as "Not supported" does <em>not</em> mean that future versions are also |
| unworkable — some vendors are working hard to correct the |
| problems... and, as of this writing (late 2004), some are not.</p> |
| <p>Please keep in mind that this is not a complete list!</p> |
| <a class="target" id="compatibility-table" name="compatibility-table"></a><table border="1" class="table"> |
| <colgroup> |
| <col width="27%" /> |
| <col width="11%" /> |
| <col width="11%" /> |
| <col width="51%" /> |
| </colgroup> |
| <thead valign="bottom"> |
| <tr><th>Compiler</th> |
| <th>Versions</th> |
| <th>Category</th> |
| <th>Problematic Areas (if any)</th> |
| </tr> |
| </thead> |
| <tbody valign="top"> |
| <tr><td>Borland C++</td> |
| <td>5.6.4</td> |
| <td>B</td> |
| <td><a class="reference" href="./incomplete-support-for.html">Lambda Expressions</a>, <a class="reference" href="./broken-integral-constant.html">Integral Constant Expressions</a></td> |
| </tr> |
| <tr><td>Borland C++</td> |
| <td>5.6.1</td> |
| <td>C</td> |
| <td><strong>Not supported</strong></td> |
| </tr> |
| <tr><td>Comeau C/C++</td> |
| <td>4.2.45, |
| 4.3.3</td> |
| <td>A</td> |
| <td> </td> |
| </tr> |
| <tr><td>Compaq C++ (Tru64 UNIX)</td> |
| <td>6.5</td> |
| <td>A</td> |
| <td> </td> |
| </tr> |
| <tr><td>GCC</td> |
| <td>3.2.2, |
| 3.3.1, 3.4</td> |
| <td>A</td> |
| <td> </td> |
| </tr> |
| <tr><td>GCC</td> |
| <td>2.95.3</td> |
| <td>B</td> |
| <td><a class="reference" href="./broken-integral-constant.html">Integral Constant Expressions</a></td> |
| </tr> |
| <tr><td>HP aCC</td> |
| <td>3.55</td> |
| <td>C</td> |
| <td><strong>Not supported</strong></td> |
| </tr> |
| <tr><td>Intel C++</td> |
| <td>7.1, 8.0</td> |
| <td>A</td> |
| <td> </td> |
| </tr> |
| <tr><td>Metrowerks CodeWarrior</td> |
| <td>8.3, 9.2</td> |
| <td>A</td> |
| <td> </td> |
| </tr> |
| <tr><td>Microsoft Visual C++</td> |
| <td>7.1</td> |
| <td>A</td> |
| <td> </td> |
| </tr> |
| <tr><td>Microsoft Visual C++</td> |
| <td>6.0 sp5, |
| 7.0</td> |
| <td>B</td> |
| <td><a class="reference" href="./incomplete-support-for.html">Lambda Expressions</a>, <a class="reference" href="./eti.html">ETI</a>, <a class="reference" href="./broken-integral-constant.html">Integral Constant Expressions</a></td> |
| </tr> |
| <tr><td>SGI MIPSpro</td> |
| <td>7.3</td> |
| <td>B</td> |
| <td><a class="reference" href="./broken-integral-constant.html">Integral Constant Expressions</a></td> |
| </tr> |
| <tr><td>Sun CC</td> |
| <td>5.6</td> |
| <td>C</td> |
| <td><strong>Not supported</strong></td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="toc simple" id="outline"> |
| <li><a class="reference" href="./broken-integral-constant.html" id="id74" name="id74">Broken Integral Constant Expressions</a></li> |
| <li><a class="reference" href="./incomplete-support-for.html" id="id75" name="id75">Incomplete Support for Lambda Expressions</a></li> |
| <li><a class="reference" href="./eti.html" id="id76" name="id76">ETI</a></li> |
| </ul> |
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