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diff --git a/docs/en/erlang.mk/1/guide/app/index.html b/docs/en/erlang.mk/1/guide/app/index.html index efc60e99..55c2d223 100644 --- a/docs/en/erlang.mk/1/guide/app/index.html +++ b/docs/en/erlang.mk/1/guide/app/index.html @@ -7,8 +7,6 @@ <meta name="description" content=""> <meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara"> - <meta name="generator" content="Hugo 0.37.1" /> - <title>Nine Nines: Building</title> <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic' rel='stylesheet' type='text/css'> @@ -284,6 +282,43 @@ http://www.gnu.org/software/src-highlite --> the next chapter.</p></div> </div> <div class="sect3"> +<h4 id="_application_environment">Application environment</h4> +<div class="paragraph"><p>The <code>PROJECT_ENV</code> variable is used to set the application +environment:</p></div> +<div class="listingblock"> +<div class="content"><!-- Generator: GNU source-highlight +by Lorenzo Bettini +http://www.lorenzobettini.it +http://www.gnu.org/software/src-highlite --> +<pre><tt>define PROJECT_ENV +<span style="color: #990000">[</span> + {chips<span style="color: #990000">,</span> <span style="color: #990000">[</span>currysauce<span style="color: #990000">,</span>{mushypeas<span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">false</span></span>}<span style="color: #990000">]</span>}<span style="color: #990000">,</span> + {pizza<span style="color: #990000">,</span> <span style="color: #990000">[</span>{size<span style="color: #990000">,</span>large}<span style="color: #990000">,</span>{toppings<span style="color: #990000">,[</span>anchovies<span style="color: #990000">]</span>}<span style="color: #990000">]</span>} +<span style="color: #990000">]</span> +endef</tt></pre></div></div> +<div class="paragraph"><p>If you have a large set of environment variables, you may find it +easier to use a separate file. Do this by including the following +in your Makefile:</p></div> +<div class="listingblock"> +<div class="content"><!-- Generator: GNU source-highlight +by Lorenzo Bettini +http://www.lorenzobettini.it +http://www.gnu.org/software/src-highlite --> +<pre><tt><span style="color: #009900">PROJECT_ENV_FILE =</span> src/env.src +<span style="color: #009900">PROJECT_ENV =</span> <span style="color: #009900">$(</span>subst <span style="color: #990000">\</span>n<span style="color: #990000">,</span><span style="color: #009900">$(newline)</span><span style="color: #990000">,</span><span style="color: #009900">$(</span>shell cat <span style="color: #009900">$(PROJECT_ENV_FILE)</span> <span style="color: #990000">|</span> sed -e <span style="color: #FF0000">'s/$$/</span><span style="color: #CC33CC">\\</span><span style="color: #FF0000">n/;'</span><span style="color: #990000">))</span> +ebin<span style="color: #990000">/</span><span style="color: #009900">$(PROJECT)</span>.app<span style="color: #990000">::</span> <span style="color: #009900">$(PROJECT_ENV_FILE)</span></tt></pre></div></div> +<div class="paragraph"><p>The file has the same contents as the <code>PROJECT_ENV</code> variable:</p></div> +<div class="listingblock"> +<div class="content"><!-- Generator: GNU source-highlight +by Lorenzo Bettini +http://www.lorenzobettini.it +http://www.gnu.org/software/src-highlite --> +<pre><tt>[ + {<span style="color: #FF6600">chips</span>, [<span style="color: #FF6600">currysauce</span>,{<span style="color: #FF6600">mushypeas</span>,<span style="color: #000080">false</span>}]}, + {<span style="color: #FF6600">pizza</span>, [{<span style="font-weight: bold"><span style="color: #000080">size</span></span>,<span style="color: #FF6600">large</span>},{<span style="color: #FF6600">toppings</span>,[<span style="color: #FF6600">anchovies</span>]}]} +]</tt></pre></div></div> +</div> +<div class="sect3"> <h4 id="_legacy_method">Legacy method</h4> <div class="paragraph"><p>The <em>src/$(PROJECT).app.src</em> file is a legacy method of building Erlang applications. It was introduced by the original |