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<a href = "References#Blume01">ML-NLFFI</a> is the no-longer-foreign-function interface library for SML. <p>
As of 20050212, MLton has an initial port of ML-NLFFI from SML/NJ to MLton.  All of the ML-NLFFI functionality is present. 
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Additionally, MLton has an initial port of the <tt>mlnlffigen</tt> tool from SML/NJ to MLton.  Due to low-level details, the code generated by SML/NJ's <tt>ml-nlffigen</tt> is not compatible with MLton, and vice-versa.  However, the generated code has the same interface, so portable client code can be written.  MLton's <tt>mlnlffigen</tt> does not currently support C functions with <tt>struct</tt> or <tt>union</tt> arguments. 
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<h2 id="head-0bb18642b70b9f8a9c12ccf39487328f306b8e19">Usage</h2>

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 You can import the ML-NLFFI Library into an MLB file with  <tt>$(SML_LIB)/mlnlffi-lib/mlnlffi-lib.mlb</tt> 
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<p>
 If you are porting a project from SML/NJ's <a href="CompilationManager">CompilationManager</a>  to MLton's <a href="MLBasis"> ML Basis system</a> using <tt>cm2mlb</tt>, note that  the following maps are included by default: 
<pre>$c/c.mlb  $(SML_LIB)/mlnlffi-lib/mlnlffi-lib.mlb
</pre> This will automatically convert a <tt>$/c.cm</tt> import in an input  <tt>.cm</tt> file into a <tt>$(SML_LIB)/mlnlffi-lib/mlnlffi-lib.mlb</tt>  import in the output <tt>.mlb</tt> file.  
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<h2 id="head-a4bc8bf5caf54b18cea9f58e83dd4acb488deb17">Also see</h2>

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<p>
 <a href="MLNLFFIImplementation">MLNLFFIImplementation</a> 
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Last edited on 2005-12-01 20:57:29 by <span title="ppp-71-139-183-221.dsl.snfc21.pacbell.net"><a href="StephenWeeks">StephenWeeks</a></span>.
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