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Next: <a href="Project-Status.html#Project-Status" accesskey="n" rel="next">Project Status</a>, Previous: <a href="Preprocessing-and-conditional-compilation.html#Preprocessing-and-conditional-compilation" accesskey="p" rel="prev">Preprocessing and conditional compilation</a>, Up: <a href="Introduction.html#Introduction" accesskey="u" rel="up">Introduction</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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<a name="GNU-Fortran-and-G77-1"></a>
<h3 class="section">1.4 GNU Fortran and G77</h3>
<a name="index-Fortran-77"></a>
<a name="index-g77"></a>

<p>The GNU Fortran compiler is the successor to <code>g77</code>, the Fortran 
77 front end included in GCC prior to version 4.  It is an entirely new 
program that has been designed to provide Fortran 95 support and 
extensibility for future Fortran language standards, as well as providing 
backwards compatibility for Fortran 77 and nearly all of the GNU language 
extensions supported by <code>g77</code>.
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