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<a name="Compiler-Requirements"></a>
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<p>
Previous: <a href="Semantic-Predicates.html#Semantic-Predicates" accesskey="p" rel="prev">Semantic Predicates</a>, Up: <a href="GLR-Parsers.html#GLR-Parsers" accesskey="u" rel="up">GLR Parsers</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index-of-Terms.html#Index-of-Terms" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Considerations-when-Compiling-GLR-Parsers"></a>
<h4 class="subsection">1.5.5 Considerations when Compiling GLR Parsers</h4>
<a name="index-inline"></a>
<a name="index-GLR-parsers-and-inline"></a>

<p>The GLR parsers require a compiler for ISO C89 or
later.  In addition, they use the <code>inline</code> keyword, which is not
C89, but is C99 and is a common extension in pre-C99 compilers.  It is
up to the user of these parsers to handle
portability issues.  For instance, if using Autoconf and the Autoconf
macro <code>AC_C_INLINE</code>, a mere
</p>
<div class="example">
<pre class="example">%{
  #include &lt;config.h&gt;
%}
</pre></div>

<p>will suffice.  Otherwise, we suggest
</p>
<div class="example">
<pre class="example">%{
  #if (__STDC_VERSION__ &lt; 199901 &amp;&amp; ! defined __GNUC__ \
       &amp;&amp; ! defined inline)
  # define inline
  #endif
%}
</pre></div>




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