<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta name="robots" content="index,nofollow"> <title>MLBasisPathMap - MLton Standard ML Compiler (SML Compiler)</title> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="all" href="common.css"> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="screen" href="screen.css"> <link rel="stylesheet" type="text/css" charset="iso-8859-1" media="print" href="print.css"> <link rel="Start" href="Home"> </head> <body lang="en" dir="ltr"> <script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-833377-1"; urchinTracker(); </script> <table bgcolor = lightblue cellspacing = 0 style = "border: 0px;" width = 100%> <tr> <td style = " border: 0px; color: darkblue; font-size: 150%; text-align: left;"> <a class = mltona href="Home">MLton MLTONWIKIVERSION</a> <td style = " border: 0px; font-size: 150%; text-align: center; width: 50%;"> MLBasisPathMap <td style = " border: 0px; text-align: right;"> <table cellspacing = 0 style = "border: 0px"> <tr style = "vertical-align: middle;"> </table> <tr style = "background-color: white;"> <td colspan = 3 style = " border: 0px; font-size:70%; text-align: right;"> <a href = "Home">Home</a> <a href = "TitleIndex">Index</a> </table> <div id="content" lang="en" dir="ltr"> An <a href="MLBasis">ML Basis</a> <em>path map</em> describes a map from ML Basis path variables (of the form <tt>$(VAR)</tt>) 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> The format of an <tt>mlb-path-map</tt> file is a sequence of lines; each line consists of two, white-space delimited tokens. The first token is a path variable <tt>VAR</tt> and the second token is the path to which the variable is mapped. The path may include path variables, which are recursively expanded. </p> <p> The mapping from path variables to paths is initialized by reading a system-wide configuration file: <tt>/usr/lib/mlton/mlb-path-map</tt>. Additional path maps can be specified with <tt>-mlb-path-map</tt> and individual path variable mappings can be specified with <tt>-mlb-path-var</tt> (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> <p> The compiler and system-wide configuration file makes the following path variables available. </p> <ul> <div> <table> <tr> <td align="center"> MLB path variable</td> <td align="center"> Description</td> </tr> <tr> <td> <tt>SML_LIB</tt></td> <td> path to system-wide libraries, usually <tt>/usr/lib/mlton/sml</tt></td> </tr> <tr> <td> <tt>TARGET_ARCH</tt></td> <td> string representation of target architecture</td> </tr> <tr> <td> <tt>TARGET_OS</tt></td> <td> string representation of target operating system</td> </tr> </table> </div> </ul> </div> <p> <hr> Last edited on 2010-04-06 17:43:43 by <span title="129.21.75.73"><a href="MatthewFluet">MatthewFluet</a></span>. </body></html>