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<h1 class="lined-header"><span>EDoc comments</span></h1>
<p>Erlang.mk provides a thin wrapper on top of EDoc, an application that generates documentation based on comments found in modules.</p>
<h2 id="_writing_edoc_comments">Writing EDoc comments</h2>
<p>The <a href="http://www.erlang.org/doc/apps/edoc/chapter.html">EDoc user guide</a> explains everything you need to know about EDoc comments.</p>
<h2 id="_configuration">Configuration</h2>
<p>The <code>EDOC_OPTS</code> variable allows you to specify additional EDoc options. Options are documented in the <a href="http://www.erlang.org/doc/man/edoc.html#run-2">EDoc manual</a>.</p>
<p>A common use for this variable is to enable Markdown in doc comments, using the <code>edown</code> application:</p>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><font color="#009900">DOC_DEPS =</font> edown
<font color="#009900">EDOC_OPTS =</font> {doclet<font color="#990000">,</font> edown_doclet}</tt></pre>
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<h2 id="_usage">Usage</h2>
<p>To build all documentation, you would typically use:</p>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt>$ make docs</tt></pre>
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<p>Do note, however, that EDoc comments will only be generated automatically if the <em>doc/overview.edoc</em> file exists. If you do not want that file and still want to generate doc comments, two solutions are available.</p>
<p>You can generate EDoc documentation directly:</p>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt>$ make edoc</tt></pre>
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<p>You can enable automatic generation on <code>make docs</code> by adding the following to your Makefile:</p>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><font color="#990000">docs::</font> edoc</tt></pre>
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<h2 id="_running_edoc_on_all_applications">Running EDoc on all applications</h2>
<p>In a multi-application project you may want to run EDoc against all applications at the same time, instead of against each applications independently. To do so, you need to configure the <code>EDOC_SRC_DIRS</code> at the end of your Makefile, after including <em>erlang.mk</em>:</p>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.8
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><font color="#009900">EDOC_SRC_DIRS =</font> <font color="#009900">$(ALL_APPS_DIRS)</font></tt></pre>
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