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1 | <html> | ||
2 | <head> | ||
3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
4 | <title>3.1. Yocto Project Components</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="The Yocto Project Reference Manual"> | ||
8 | <link rel="up" href="technical-details.html" title="Chapter 3. Technical Details"> | ||
9 | <link rel="prev" href="technical-details.html" title="Chapter 3. Technical Details"> | ||
10 | <link rel="next" href="usingpoky-components-bitbake.html" title="3.1.1. BitBake"> | ||
11 | </head> | ||
12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.1. Yocto Project Components"> | ||
13 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | ||
14 | <a name="usingpoky-components"></a>3.1. Yocto Project Components</h2></div></div></div> | ||
15 | <p> | ||
16 | The BitBake task executor together with various types of configuration files form the | ||
17 | OpenEmbedded Core. | ||
18 | This section overviews the BitBake task executor and the | ||
19 | configuration files by describing what they are used for and how they interact. | ||
20 | </p> | ||
21 | <p> | ||
22 | BitBake handles the parsing and execution of the data files. | ||
23 | The data itself is of various types: | ||
24 | </p> | ||
25 | <div class="itemizedlist"><ul class="itemizedlist" type="disc"> | ||
26 | <li class="listitem"><p><span class="emphasis"><em>Recipes:</em></span> Provides details about particular | ||
27 | pieces of software</p></li> | ||
28 | <li class="listitem"><p><span class="emphasis"><em>Class Data:</em></span> An abstraction of common build | ||
29 | information (e.g. how to build a Linux kernel).</p></li> | ||
30 | <li class="listitem"><p><span class="emphasis"><em>Configuration Data:</em></span> Defines machine-specific settings, | ||
31 | policy decisions, etc. | ||
32 | Configuration data acts as the glue to bind everything together.</p></li> | ||
33 | </ul></div> | ||
34 | <p> | ||
35 | For more information on data, see the | ||
36 | "<a class="link" href="../dev-manual/yocto-project-terms.html" target="_self">Yocto Project Terms</a>" | ||
37 | section in the Yocto Project Development Manual. | ||
38 | </p> | ||
39 | <p> | ||
40 | BitBake knows how to combine multiple data sources together and refers to each data source | ||
41 | as a layer. | ||
42 | For information on layers, see the | ||
43 | "<a class="link" href="../dev-manual/understanding-and-creating-layers.html" target="_self">Understanding and | ||
44 | Creating Layers</a>" section of the Yocto Project Development Manual. | ||
45 | </p> | ||
46 | <p> | ||
47 | Following are some brief details on these core components. | ||
48 | For more detailed information on these components see the | ||
49 | "<a class="link" href="ref-structure.html" title="Chapter 5. Source Directory Structure">Directory Structure</a>" chapter. | ||
50 | </p> | ||
51 | </div></body> | ||
52 | </html> | ||