<!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta name="generator" content="AsciiDoc 8.6.8"> <title>MLBasisPathMap</title> <link rel="stylesheet" href="./asciidoc.css" type="text/css"> <link rel="stylesheet" href="./pygments.css" type="text/css"> <script type="text/javascript" src="./asciidoc.js"></script> <script type="text/javascript"> /*<![CDATA[*/ asciidoc.install(); /*]]>*/ </script> <link rel="stylesheet" href="./mlton.css" type="text/css"/> </head> <body class="article"> <div id="banner"> <div id="banner-home"> <a href="./Home">MLton 20130715</a> </div> </div> <div id="header"> <h1>MLBasisPathMap</h1> </div> <div id="content"> <div id="preamble"> <div class="sectionbody"> <div class="paragraph"><p>An <a href="MLBasis">ML Basis</a> <em>path map</em> describes a map from ML Basis path variables (of the form <span class="monospaced">$(VAR)</span>) to file system paths. ML Basis path variables provide a flexible way to refer to libraries while allowing them to be moved without changing their clients.</p></div> <div class="paragraph"><p>The format of an <span class="monospaced">mlb-path-map</span> file is a sequence of lines; each line consists of two, white-space delimited tokens. The first token is a path variable <span class="monospaced">VAR</span> and the second token is the path to which the variable is mapped. The path may include path variables, which are recursively expanded.</p></div> <div class="paragraph"><p>The mapping from path variables to paths is initialized by reading a system-wide configuration file: <span class="monospaced">/usr/lib/mlton/mlb-path-map</span>. Additional path maps can be specified with <span class="monospaced">-mlb-path-map</span> and individual path variable mappings can be specified with <span class="monospaced">-mlb-path-var</span> (see <a href="CompileTimeOptions">CompileTimeOptions</a>). Configuration files are processed from first to last and from top to bottom, later mappings take precedence over earlier mappings.</p></div> <div class="paragraph"><p>The compiler and system-wide configuration file makes the following path variables available.</p></div> <table class="tableblock frame-all grid-all" style=" width:100%; "> <col style="width:25%;"> <col style="width:75%;"> <thead> <tr> <th class="tableblock halign-center valign-top" >MLB path variable</th> <th class="tableblock halign-left valign-top" >Description</th> </tr> </thead> <tbody> <tr> <td class="tableblock halign-center valign-top" ><p class="tableblock"><span class="monospaced">SML_LIB</span></p></td> <td class="tableblock halign-left valign-top" ><p class="tableblock">path to system-wide libraries, usually <span class="monospaced">/usr/lib/mlton/sml</span></p></td> </tr> <tr> <td class="tableblock halign-center valign-top" ><p class="tableblock"><span class="monospaced">TARGET_ARCH</span></p></td> <td class="tableblock halign-left valign-top" ><p class="tableblock">string representation of target architecture</p></td> </tr> <tr> <td class="tableblock halign-center valign-top" ><p class="tableblock"><span class="monospaced">TARGET_OS</span></p></td> <td class="tableblock halign-left valign-top" ><p class="tableblock">string representation of target operating system</p></td> </tr> <tr> <td class="tableblock halign-center valign-top" ><p class="tableblock"><span class="monospaced">DEFAULT_INT</span></p></td> <td class="tableblock halign-left valign-top" ><p class="tableblock">binding for default int, usually <span class="monospaced">int32</span></p></td> </tr> <tr> <td class="tableblock halign-center valign-top" ><p class="tableblock"><span class="monospaced">DEFAULT_WORD</span></p></td> <td class="tableblock halign-left valign-top" ><p class="tableblock">binding for default word, usually <span class="monospaced">word32</span></p></td> </tr> <tr> <td class="tableblock halign-center valign-top" ><p class="tableblock"><span class="monospaced">DEFAULT_REAL</span></p></td> <td class="tableblock halign-left valign-top" ><p class="tableblock">binding for default real, usually <span class="monospaced">real64</span></p></td> </tr> </tbody> </table> </div> </div> </div> <div id="footnotes"><hr></div> <div id="footer"> <div id="footer-text"> </div> <div id="footer-badges"> </div> </div> </body> </html>
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