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| 1 | <html> | ||
| 2 | <head> | ||
| 3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
| 4 | <title>2.8.2.1. Distro Layer</title> | ||
| 5 | <link rel="stylesheet" type="text/css" href="../book.css"> | ||
| 6 | <meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> | ||
| 7 | <link rel="home" href="index.html" title="Getting Started With Yocto Project"> | ||
| 8 | <link rel="up" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
| 9 | <link rel="prev" href="metadata-machine-configuration-and-policy-configuration.html" title="2.8.2. Metadata, Machine Configuration, and Policy Configuration"> | ||
| 10 | <link rel="next" href="bsp-layer.html" title="2.8.2.2. BSP Layer"> | ||
| 11 | </head> | ||
| 12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.2.1. Distro Layer"> | ||
| 13 | <div class="titlepage"><div><div><h4 class="title"> | ||
| 14 | <a name="distro-layer"></a>2.8.2.1. Distro Layer</h4></div></div></div> | ||
| 15 | <p> | ||
| 16 | The distribution layer provides policy configurations for your | ||
| 17 | distribution. | ||
| 18 | Best practices dictate that you isolate these types of | ||
| 19 | configurations into their own layer. | ||
| 20 | Settings you provide in | ||
| 21 | <code class="filename">conf/distro/<em class="replaceable"><code>distro</code></em>.conf</code> override | ||
| 22 | similar | ||
| 23 | settings that BitBake finds in your | ||
| 24 | <code class="filename">conf/local.conf</code> file in the Build | ||
| 25 | Directory. | ||
| 26 | </p> | ||
| 27 | <p> | ||
| 28 | The following list provides some explanation and references | ||
| 29 | for what you typically find in the distribution layer: | ||
| 30 | </p> | ||
| 31 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
| 32 | <li class="listitem"><p><span class="emphasis"><em>classes:</em></span> | ||
| 33 | Class files (<code class="filename">.bbclass</code>) hold | ||
| 34 | common functionality that can be shared among | ||
| 35 | recipes in the distribution. | ||
| 36 | When your recipes inherit a class, they take on the | ||
| 37 | settings and functions for that class. | ||
| 38 | You can read more about class files in the | ||
| 39 | "<a class="link" href="../ref-manual/ref-classes.html" target="_self">Classes</a>" | ||
| 40 | section of the Yocto Reference Manual. | ||
| 41 | </p></li> | ||
| 42 | <li class="listitem"><p><span class="emphasis"><em>conf:</em></span> | ||
| 43 | This area holds configuration files for the | ||
| 44 | layer (<code class="filename">conf/layer.conf</code>), | ||
| 45 | the distribution | ||
| 46 | (<code class="filename">conf/distro/<em class="replaceable"><code>distro</code></em>.conf</code>), | ||
| 47 | and any distribution-wide include files. | ||
| 48 | </p></li> | ||
| 49 | <li class="listitem"><p><span class="emphasis"><em>recipes-*:</em></span> | ||
| 50 | Recipes and append files that affect common | ||
| 51 | functionality across the distribution. | ||
| 52 | This area could include recipes and append files | ||
| 53 | to add distribution-specific configuration, | ||
| 54 | initialization scripts, custom image recipes, | ||
| 55 | and so forth.</p></li> | ||
| 56 | </ul></div> | ||
| 57 | <p> | ||
| 58 | </p> | ||
| 59 | </div></body> | ||
| 60 | </html> | ||