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| 1 | <html> | ||
| 2 | <head> | ||
| 3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
| 4 | <title>2.8.5.2. Patching</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="bitbake-dev-environment.html" title="2.8.5. BitBake"> | ||
| 9 | <link rel="prev" href="source-fetching-dev-environment.html" title="2.8.5.1. Source Fetching"> | ||
| 10 | <link rel="next" href="configuration-and-compilation-dev-environment.html" title="2.8.5.3. Configuration and Compilation"> | ||
| 11 | </head> | ||
| 12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.8.5.2. Patching"> | ||
| 13 | <div class="titlepage"><div><div><h4 class="title"> | ||
| 14 | <a name="patching-dev-environment"></a>2.8.5.2. Patching</h4></div></div></div> | ||
| 15 | <p> | ||
| 16 | Once source code is fetched and unpacked, BitBake locates | ||
| 17 | patch files and applies them to the source files: | ||
| 18 | </p> | ||
| 19 | <table border="0" summary="manufactured viewport for HTML img" cellspacing="0" cellpadding="0" width="540"><tr style="height: 450px"><td align="center"><img src="figures/patching.png" align="middle" width="540"></td></tr></table> | ||
| 20 | <p> | ||
| 21 | </p> | ||
| 22 | <p> | ||
| 23 | The | ||
| 24 | <a class="link" href="../ref-manual/ref-tasks-patch.html" target="_self"><code class="filename">do_patch</code></a> | ||
| 25 | task processes recipes by | ||
| 26 | using the | ||
| 27 | <a class="link" href="../ref-manual/var-SRC_URI.html" target="_self"><code class="filename">SRC_URI</code></a> | ||
| 28 | variable to locate applicable patch files, which by default | ||
| 29 | are <code class="filename">*.patch</code> or | ||
| 30 | <code class="filename">*.diff</code> files, or any file if | ||
| 31 | "apply=yes" is specified for the file in | ||
| 32 | <code class="filename">SRC_URI</code>. | ||
| 33 | </p> | ||
| 34 | <p> | ||
| 35 | BitBake finds and applies multiple patches for a single recipe | ||
| 36 | in the order in which it finds the patches. | ||
| 37 | Patches are applied to the recipe's source files located in the | ||
| 38 | <a class="link" href="../ref-manual/var-S.html" target="_self"><code class="filename">S</code></a> | ||
| 39 | directory. | ||
| 40 | </p> | ||
| 41 | <p> | ||
| 42 | For more information on how the source directories are | ||
| 43 | created, see the | ||
| 44 | "<a class="link" href="source-fetching-dev-environment.html" title="2.8.5.1. Source Fetching">Source Fetching</a>" | ||
| 45 | section. | ||
| 46 | </p> | ||
| 47 | </div></body> | ||
| 48 | </html> | ||