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            <h1>perlirix</h1>


  <!--    -->
<ul><li><a href="#NAME">NAME</a><li><a href="#DESCRIPTION">DESCRIPTION</a><ul><li><a href="#Building-32-bit-Perl-in-Irix">Building 32-bit Perl in Irix</a><li><a href="#Building-64-bit-Perl-in-Irix">Building 64-bit Perl in Irix</a><li><a href="#About-Compiler-Versions-of-Irix">About Compiler Versions of Irix</a><li><a href="#Linker-Problems-in-Irix">Linker Problems in Irix</a><li><a href="#Malloc-in-Irix">Malloc in Irix</a><li><a href="#Building-with-threads-in-Irix">Building with threads in Irix</a><li><a href="#Irix-5.3">Irix 5.3</a></ul><li><a href="#AUTHOR">AUTHOR</a></ul><a name="NAME"></a><h1>NAME</h1>
<p>perlirix - Perl version 5 on Irix systems</p>
<a name="DESCRIPTION"></a><h1>DESCRIPTION</h1>
<p>This document describes various features of Irix that will affect how Perl
version 5 (hereafter just Perl) is compiled and/or runs.</p>
<a name="Building-32-bit-Perl-in-Irix"></a><h2>Building 32-bit Perl in Irix</h2>
<p>Use</p>
<pre class="verbatim"><ol><li>	<span class="w">sh</span> <span class="w">Configure</span> -<span class="w">Dcc</span>=<span class="q">&#39;cc -n32&#39;</span></li></ol></pre><p>to compile Perl 32-bit.  Don't bother with -n32 unless you have 7.1
or later compilers (use cc -version to check).</p>
<p>(Building 'cc -n32' is the default.)</p>
<a name="Building-64-bit-Perl-in-Irix"></a><h2>Building 64-bit Perl in Irix</h2>
<p>Use</p>
<pre class="verbatim"><ol><li>	<span class="w">sh</span> <span class="w">Configure</span> -<span class="w">Dcc</span>=<span class="q">&#39;cc -64&#39;</span> -<span class="w">Duse64bitint</span></li></ol></pre><p>This requires require a 64-bit MIPS CPU (R8000, R10000, ...)</p>
<p>You can also use</p>
<pre class="verbatim"><ol><li>	<span class="w">sh</span> <span class="w">Configure</span> -<span class="w">Dcc</span>=<span class="q">&#39;cc -64&#39;</span> -<span class="w">Duse64bitall</span></li></ol></pre><p>but that makes no difference compared with the -Duse64bitint because
of the <code class="inline"><span class="w">cc</span> -<span class="n">64</span></code>
.</p>
<p>You can also do</p>
<pre class="verbatim"><ol><li>	<span class="w">sh</span> <span class="w">Configure</span> -<span class="w">Dcc</span>=<span class="q">&#39;cc -n32&#39;</span> -<span class="w">Duse64bitint</span></li></ol></pre><p>to use long longs for the 64-bit integer type, in case you don't
have a 64-bit CPU.</p>
<p>If you are using gcc, just</p>
<pre class="verbatim"><ol><li>	<span class="w">sh</span> <span class="w">Configure</span> -<span class="w">Dcc</span>=<span class="w">gcc</span> -<span class="w">Duse64bitint</span></li></ol></pre><p>should be enough, the Configure should automatically probe for the
correct 64-bit settings.</p>
<a name="About-Compiler-Versions-of-Irix"></a><h2>About Compiler Versions of Irix</h2>
<p>Some Irix cc versions, e.g. 7.3.1.1m (try cc -version) have been known
to have issues (coredumps) when compiling perl.c.  If you've used
-OPT:fast_io=ON and this happens, try removing it.  If that fails, or
you didn't use that, then try adjusting other optimization options
(-LNO, -INLINE, -O3 to -O2, etcetera).  The compiler bug has been
reported to SGI.  (Allen Smith &lt;easmith@beatrice.rutgers.edu&gt;)</p>
<a name="Linker-Problems-in-Irix"></a><h2>Linker Problems in Irix</h2>
<p>If you get complaints about so_locations then search in the file
hints/irix_6.sh for "lddflags" and do the suggested adjustments.
(David Billinghurst &lt;David.Billinghurst@riotinto.com.au&gt;)</p>
<a name="Malloc-in-Irix"></a><h2>Malloc in Irix</h2>
<p>Do not try to use Perl's malloc, this will lead into very mysterious
errors (especially with -Duse64bitall).</p>
<a name="Building-with-threads-in-Irix"></a><h2>Building with threads in Irix</h2>
<p>Run Configure with -Duseithreads which will configure Perl with
the Perl 5.8.0 "interpreter threads", see <a href="threads.html">threads</a>.</p>
<p>For Irix 6.2 with perl threads, you have to have the following
patches installed:</p>
<pre class="verbatim"><ol><li>        1404 Irix 6.2 Posix 1003.1b man pages</li><li>        1645 Irix 6.2 &amp; 6.3 POSIX header file updates</li><li>        2000 Irix 6.2 Posix 1003.1b support modules</li><li>        2254 Pthread library fixes</li><li>        2401 6.2 all platform kernel rollup</li></ol></pre><p><b>IMPORTANT</b>: Without patch 2401, a kernel bug in Irix 6.2 will cause
your machine to panic and crash when running threaded perl.  Irix 6.3
and later are okay.</p>
<pre class="verbatim"><ol><li>    <span class="w">Thanks</span> <span class="w">to</span> <span class="w">Hannu</span> <span class="w">Napari</span> <span class="q">&lt;Hannu.Napari@hut.fi&gt;</span> for <span class="w">the</span> <span class="w">IRIX</span></li><li>    <span class="w">pthreads</span> <span class="w">patches</span> <span class="w">information</span>.</li></ol></pre><a name="Irix-5.3"></a><h2>Irix 5.3</h2>
<p>While running Configure and when building, you are likely to get
quite a few of these warnings:</p>
<pre class="verbatim"><ol><li>  <span class="j">ld:</span></li><li>  <span class="w">The</span> <span class="w">shared</span> <span class="w">object</span> /<span class="w">usr</span>/<span class="w">lib</span>/<span class="w">libm</span>.<span class="w">so</span> <span class="w">did</span> not <span class="w">resolve</span> <span class="w">any</span> <span class="w">symbols</span>.</li><li>        <span class="w">You</span> <span class="w">may</span> <span class="w">want</span> <span class="w">to</span> <span class="w">remove</span> <span class="w">it</span> <span class="w">from</span> <span class="w">your</span> <a class="l_k" href="functions/link.html">link</a> <span class="w">line</span>.</li></ol></pre><p>Ignore them: in IRIX 5.3 there is no way to quieten ld about this.</p>
<p>During compilation you will see this warning from toke.c:</p>
<pre class="verbatim"><ol><li>  <span class="j">uopt:</span> <span class="w">Warning</span><span class="co">:</span> <span class="w">Perl_yylex</span><span class="co">:</span> <span class="w">this</span> <span class="w">procedure</span> <a class="l_k" href="functions/not.html">not</a> <span class="w">optimized</span> <span class="w">because</span> <span class="w">it</span></li><li>        <span class="w">exceeds</span> <span class="w">size</span> <span class="w">threshold</span><span class="sc">;</span> <span class="w">to</span> <span class="w">optimize</span> <span class="w">this</span> <span class="w">procedure</span><span class="cm">,</span> <a class="l_k" href="functions/use.html">use</a> -<span class="w">Olimit</span></li><li>        <span class="w">option</span> <span class="w">with</span> <span class="w">value</span> &gt;= <span class="n">4252.</span></li></ol></pre><p>Ignore the warning.</p>
<p>In IRIX 5.3 and with Perl 5.8.1 (Perl 5.8.0 didn't compile in IRIX 5.3)
the following failures are known.</p>
<pre class="verbatim"><ol><li> <span class="w">Failed</span> <span class="w">Test</span>                  <span class="w">Stat</span> <span class="w">Wstat</span> <span class="w">Total</span> <span class="w">Fail</span>  <span class="w">Failed</span>  <span class="w">List</span> <span class="w">of</span> <span class="w">Failed</span></li><li> -----------------------------------------------------------------------</li><li> ..<span class="q">/ext/</span><span class="w">List</span>/<span class="w">Util</span>/<span class="w">t</span>/<span class="w">shuffle</span>.<span class="w">t</span>    <span class="n">0</span>   <span class="n">139</span>    ?<span class="q">?   ?</span>?       <span class="i">%  ?</span>?</li><li> ..<span class="q">/lib/</span><span class="w">Math</span>/<span class="w">Trig</span>.<span class="w">t</span>            <span class="n">255</span> <span class="n">65280</span>    <span class="n">29</span>   <span class="n">12</span>  <span class="n">41.38</span>%  <span class="n">24</span>-<span class="n">29</span></li><li> ..<span class="q">/lib/sort</span>.<span class="w">t</span>                   <span class="n">0</span>   <span class="n">138</span>   <span class="n">119</span>   <span class="n">72</span>  <span class="n">60.50</span>%  <span class="n">48</span>-<span class="n">119</span></li><li> <span class="n">56</span> <span class="w">tests</span> <a class="l_k" href="functions/and.html">and</a> <span class="n">474</span> <span class="w">subtests</span> <span class="w">skipped</span>.</li><li> <span class="w">Failed</span> <span class="n">3</span>/<span class="n">811</span> <span class="w">test</span> <span class="w">scripts</span><span class="cm">,</span> <span class="n">99.63</span>% <span class="w">okay</span>. <span class="n">78</span>/<span class="n">75813</span> <span class="w">subtests</span> <span class="w">failed</span><span class="cm">,</span></li><li>    <span class="n">99.90</span>% <span class="w">okay</span>.</li></ol></pre><p>They are suspected to be compiler errors (at least the shuffle.t
failure is known from some IRIX 6 setups) and math library errors
(the Trig.t failure), but since IRIX 5 is long since end-of-lifed,
further fixes for the IRIX are unlikely.  If you can get gcc for 5.3,
you could try that, too, since gcc in IRIX 6 is a known workaround for
at least the shuffle.t and sort.t failures.</p>
<a name="AUTHOR"></a><h1>AUTHOR</h1>
<p>Jarkko Hietaniemi &lt;jhi@iki.fi&gt;</p>
<p>Please report any errors, updates, or suggestions to <i>perlbug@perl.org</i>.</p>




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