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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>1 Overview</title><link rel="stylesheet" type="text/css" href="../scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="../racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-style.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../doc-site.css" title="default"/><script type="text/javascript" src="../scribble-common.js"></script><script type="text/javascript" src="../manual-racket.js"></script><script type="text/javascript" src="../doc-site.js"></script><script type="text/javascript" src="../local-redirect/local-redirect.js"></script><script type="text/javascript" src="../local-redirect/local-user-redirect.js"></script><!--[if IE 6]><style type="text/css">.SIEHidden { overflow: hidden; }</style><![endif]--></head><body id="doc-racket-lang-org"><div class="tocset"><div class="tocview"><div class="tocviewlist tocviewlisttopspace"><div class="tocviewtitle"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_0");">▼</a></td><td></td><td><a href="index.html" class="tocviewlink" data-pltdoc="x">Make:<span class="mywbr"> </span> Dependency Manager</a></td></tr></table></div><div class="tocviewsublistonly" style="display: block;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1 </td><td><a href="" class="tocviewselflink" data-pltdoc="x">Overview</a></td></tr><tr><td align="right">2 </td><td><a href="make.html" class="tocviewlink" data-pltdoc="x">Make from Dependencies</a></td></tr><tr><td align="right">3 </td><td><a href="setup-extension.html" class="tocviewlink" data-pltdoc="x">Building Native-<wbr></wbr>Code Extensions</a></td></tr><tr><td align="right">4 </td><td><a href="collection.html" class="tocviewlink" data-pltdoc="x">Making Collections</a></td></tr></table></div></div></div></div><div class="maincolumn"><div class="main"><div class="navsettop"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.1", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> <a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot("6.1");">top</a></span><span class="navright"> <a href="index.html" title="backward to "Make: Dependency Manager"" data-pltdoc="x">← prev</a> <a href="index.html" title="up to "Make: Dependency Manager"" data-pltdoc="x">up</a> <a href="make.html" title="forward to "2 Make from Dependencies"" data-pltdoc="x">next →</a></span> </div><h3 x-source-module="(lib "make/make.scrbl")" x-part-tag=""overview"">1<tt> </tt><a name="(part._overview)"></a>Overview</h3><blockquote class="refpara"><blockquote class="refcolumn"><blockquote class="refcontent"><p>If you want to build Racket modules with automatic
dependency tracking, just use <span class="stt">raco make</span> as described in
<a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=raco&rel=index.html&version=6.1" class="Sq" data-pltdoc="x"><span class="stt">raco</span>: Racket Command-Line Tools</a>.</p></blockquote></blockquote></blockquote><p>If you are already familiar with <span class="stt">make</span>, skip to the precise
details of the <a href="make.html" class="RktModLink" data-pltdoc="x"><span class="RktSym">make</span></a> library in <a href="make.html" data-pltdoc="x">Make from Dependencies</a>. This
section contains a brief overview of <span class="stt">make</span> for everyone
else.</p><p>When you use <span class="stt">make</span>, the idea is that you explain how to generate
files in a project from a collection of source files that go through
several stages of processing.</p><p>For example, say that you are writing a project that has three input
files (which you create and maintain) called <span class="stt">"a.input"</span>,
<span class="stt">"b.input"</span>, and <span class="stt">"c.input"</span>. Further, there are two
stages of processing: first you run a particular tool
<span class="stt">make-output</span> that takes an input file and produces an output
file, and then you combine the input files into a single file using
<span class="stt">combine-files</span>. Using <span class="stt">make</span>, you might describe this as:</p><p><table cellspacing="0" cellpadding="0"><tr><td><p><span class="hspace"> </span><span class="stt">a.output: a.input</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt"></span><span class="hspace"> </span><span class="stt">make-output a.input a.output</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt">b.output: b.input</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt"></span><span class="hspace"> </span><span class="stt">make-output b.input b.output</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt">c.output: c.input</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt"></span><span class="hspace"> </span><span class="stt">make-output c.input c.output</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt">total: a.output b.output c.output</span></p></td></tr><tr><td><p><span class="hspace"> </span><span class="stt"></span><span class="hspace"> </span><span class="stt">combine-files a.output b.output c.output</span></p></td></tr></table></p><p>Once you’ve put this description in a file called <span class="stt">"Makefile"</span>
you can issue the command:</p><p><span class="hspace"> </span><span class="stt">make total</span></p><p>to build your entire project. The <span class="stt">"Makefile"</span> consists of
several rules that tell <span class="stt">make</span> how to create each piece of your
project. For example, the rule that is specified in the first two
lines say that <span class="stt">"a.output"</span> depends on <span class="stt">"a.input"</span> and
the command for making <span class="stt">"a.output"</span> from <span class="stt">"a.input"</span> is</p><p><span class="hspace"> </span><span class="stt">make-output a.input a.output</span></p><p>The main feature of <span class="stt">make</span> is that it uses the time stamps of
files to determine when a certain step is necessary. The <span class="stt">make</span>
utility uses existing programs to build your project —<wbr></wbr> each rule has
a shell command line.</p><p>The <a href="make.html" class="RktModLink" data-pltdoc="x"><span class="RktSym">make</span></a> library provides similar functionality,
except that the description is in Racket, and the steps that are
needed to build target files are implemented as Racket functions.</p><p>Here’s a Racket program that is equivalent to the above:</p><blockquote class="SCodeFlow"><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._require%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">require</a></span><span class="hspace"> </span><span class="RktSym"><a href="make.html#%28form._%28%28lib._make%2Fmain..rkt%29._make%29%29" class="RktStxLink" data-pltdoc="x">make</a></span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktSym">in</span><span class="hspace"> </span><span class="RktSym">out</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">....</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">combine-files</span><span class="hspace"> </span><span class="RktPn">. </span><span class="RktSym">args</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">....</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="make.html#%28form._%28%28lib._make%2Fmain..rkt%29._make%29%29" class="RktStxLink" data-pltdoc="x">make</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">(</span><span class="RktVal">"a.output"</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"a.input"</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktVal">"a.input"</span><span class="hspace"> </span><span class="RktVal">"a.output"</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"b.output"</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"b.input"</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktVal">"b.input"</span><span class="hspace"> </span><span class="RktVal">"b.output"</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"c.output"</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"c.input"</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktVal">"c.input"</span><span class="hspace"> </span><span class="RktVal">"c.output"</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"total"</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktVal">"a.output"</span><span class="hspace"> </span><span class="RktVal">"b.output"</span><span class="hspace"> </span><span class="RktVal">"c.output"</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">combine-files</span><span class="hspace"> </span><span class="RktVal">"a.output"</span><span class="hspace"> </span><span class="RktVal">"b.output"</span><span class="hspace"> </span><span class="RktVal">"c.output"</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr></table></blockquote><p>If you were to fill in the ellipses above with calls to
<span class="RktSym">system</span>, you’d have the exact same functionality as the
original <span class="stt">"Makefile"</span>. In addition, you can use
<span class="RktSym"><a href="make.html#%28def._%28%28lib._make%2Fmain..rkt%29._make%2Fproc%29%29" class="RktValLink" data-pltdoc="x">make/proc</a></span> to abstract over the various lines. For example,
the <span class="stt">"a.output"</span>, <span class="stt">"b.output"</span>, and <span class="stt">"c.output"</span>
lines are very similar so you can write the code that generates those
lines:</p><blockquote class="SCodeFlow"><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._require%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">require</a></span><span class="hspace"> </span><span class="RktSym"><a href="make.html#%28form._%28%28lib._make%2Fmain..rkt%29._make%29%29" class="RktStxLink" data-pltdoc="x">make</a></span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktSym">in</span><span class="hspace"> </span><span class="RktSym">out</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">....</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">combine-files</span><span class="hspace"> </span><span class="RktPn">. </span><span class="RktSym">args</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">....</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktSym">files</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">(</span><span class="RktVal">"a"</span><span class="hspace"> </span><span class="RktVal">"b"</span><span class="hspace"> </span><span class="RktVal">"c"</span><span class="RktVal">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktSym">inputs</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Fmap..rkt%2529._map%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">map</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">f</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=strings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._string-append%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">string-append</a></span><span class="hspace"> </span><span class="RktSym">f</span><span class="hspace"> </span><span class="RktVal">".input"</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktSym">outputs</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Fmap..rkt%2529._map%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">map</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">f</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=strings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._string-append%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">string-append</a></span><span class="hspace"> </span><span class="RktSym">f</span><span class="hspace"> </span><span class="RktVal">".output"</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=define.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._define%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">define</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">line</span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._file%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">file</a></span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=let.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fletstx-scheme..rkt%2529._let%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">let</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">[</span><span class="RktSym">i</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=strings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._string-append%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">string-append</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._file%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">file</a></span><span class="hspace"> </span><span class="RktVal">".input"</span><span class="RktPn">)</span><span class="RktPn">]</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">[</span><span class="RktSym">o</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=strings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._string-append%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">string-append</a></span><span class="hspace"> </span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._file%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">file</a></span><span class="hspace"> </span><span class="RktVal">".output"</span><span class="RktPn">)</span><span class="RktPn">]</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">`</span><span class="RktVal">(</span><span class="RktRdr">,</span><span class="RktSym">o</span><span class="hspace"> </span><span class="RktVal">(</span><span class="RktRdr">,</span><span class="RktSym">i</span><span class="RktVal">)</span><span class="RktVal">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._list%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">list</a></span><span class="hspace"> </span><span class="RktSym">o</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._list%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">list</a></span><span class="hspace"> </span><span class="RktSym">i</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktSym">o</span><span class="hspace"> </span><span class="RktSym">i</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="make.html#%28def._%28%28lib._make%2Fmain..rkt%29._make%2Fproc%29%29" class="RktValLink" data-pltdoc="x">make/proc</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">`</span><span class="RktVal">(</span><span class="RktRdr">,@</span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Fmap..rkt%2529._map%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">map</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">i</span><span class="hspace"> </span><span class="RktSym">o</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktVal">`</span><span class="RktVal">(</span><span class="RktVal">o</span><span class="hspace"> </span><span class="RktVal">(</span><span class="RktRdr">,</span><span class="RktSym">i</span><span class="RktVal">)</span><span class="hspace"> </span><span class="RktRdr">,</span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">make-output</span><span class="hspace"> </span><span class="RktSym">i</span><span class="hspace"> </span><span class="RktSym">o</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktVal">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">inputs</span><span class="hspace"> </span><span class="RktSym">outputs</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">(</span><span class="RktVal">"total"</span><span class="hspace"> </span><span class="RktRdr">,</span><span class="RktSym">outputs</span><span class="hspace"> </span><span class="RktRdr">,</span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.1" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="http://download.racket-lang.org/docs/6.1/html/local-redirect/index.html?doc=reference&rel=procedures.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._apply%2529%2529&version=6.1" class="RktValLink Sq" data-pltdoc="x">apply</a></span><span class="hspace"> </span><span class="RktSym">combine-files</span><span class="hspace"> </span><span class="RktSym">outputs</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktVal">)</span><span class="RktVal">)</span><span class="RktPn">)</span></td></tr></table></blockquote><div class="navsetbottom"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.1", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) 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