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<h1>RunningOnDarwin</h1>
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<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>MLton runs fine on Darwin (and on Mac OS X).</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_notes">Notes</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
MLton requires the <a href="GnuMP">GnuMP</a> library, which is available via
<a href="http://www.finkproject.org">Fink</a>, <a href="http://www.macports.com">MacPorts</a>,
<a href="http://mxcl.github.io/homebrew/">Homebrew</a>.
</p>
</li>
<li>
<p>
For Intel-based Macs, MLton targets the <a href="RunningOnAMD64">AMD64
architecture</a> on Darwin 10 (Mac OS X Snow Leopard) and higher and
targets the <a href="RunningOnX86">x86 architecture</a> on Darwin 8 (Mac OS X
Tiger) and Darwin 9 (Mac OS X Leopard).
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<h2 id="_known_issues">Known issues</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
Executables that save and load worlds on Darwin 11 (Mac OS X Lion)
and higher should be compiled with <span class="monospaced">-link-opt -fno-PIE</span> ; see
<a href="MLtonWorld">MLtonWorld</a> for more details.
</p>
</li>
<li>
<p>
<a href="ProfilingTime">ProfilingTime</a> may give inaccurate results on multi-processor
machines. The <span class="monospaced">SIGPROF</span> signal, used to sample the profiled program,
is supposed to be delivered 100 times a second (i.e., at 10000us
intervals), but there can be delays of over 1 minute between the
delivery of consecutive <span class="monospaced">SIGPROF</span> signals. A more complete
description may be found
<a href="http://lists.apple.com/archives/Unix-porting/2007/Aug/msg00000.html">here</a>
and
<a href="http://lists.apple.com/archives/Darwin-dev/2007/Aug/msg00045.html">here</a>.
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<h2 id="_also_see">Also see</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<a href="RunningOnAMD64">RunningOnAMD64</a>
</p>
</li>
<li>
<p>
<a href="RunningOnPowerPC">RunningOnPowerPC</a>
</p>
</li>
<li>
<p>
<a href="RunningOnX86">RunningOnX86</a>
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