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| 1 | <html> | ||
| 2 | <head> | ||
| 3 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> | ||
| 4 | <title>2.3.2. Running Specific Tasks</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="usingpoky-debugging.html" title="2.3. Debugging Build Failures"> | ||
| 9 | <link rel="prev" href="usingpoky-debugging-taskfailures.html" title="2.3.1. Task Failures"> | ||
| 10 | <link rel="next" href="usingpoky-debugging-dependencies.html" title="2.3.3. Dependency Graphs"> | ||
| 11 | </head> | ||
| 12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="2.3.2. Running Specific Tasks"> | ||
| 13 | <div class="titlepage"><div><div><h3 class="title"> | ||
| 14 | <a name="usingpoky-debugging-taskrunning"></a>2.3.2. Running Specific Tasks</h3></div></div></div> | ||
| 15 | <p> | ||
| 16 | Any given package consists of a set of tasks. | ||
| 17 | The standard BitBake behavior in most cases is: <code class="filename">fetch</code>, | ||
| 18 | <code class="filename">unpack</code>, | ||
| 19 | <code class="filename">patch</code>, <code class="filename">configure</code>, | ||
| 20 | <code class="filename">compile</code>, <code class="filename">install</code>, <code class="filename">package</code>, | ||
| 21 | <code class="filename">package_write</code>, and <code class="filename">build</code>. | ||
| 22 | The default task is <code class="filename">build</code> and any tasks on which it depends | ||
| 23 | build first. | ||
| 24 | Some tasks exist, such as <code class="filename">devshell</code>, that are not part of the | ||
| 25 | default build chain. | ||
| 26 | If you wish to run a task that is not part of the default build chain, you can use the | ||
| 27 | <code class="filename">-c</code> option in BitBake as follows: | ||
| 28 | </p> | ||
| 29 | <pre class="literallayout"> | ||
| 30 | $ bitbake matchbox-desktop -c devshell | ||
| 31 | </pre> | ||
| 32 | <p> | ||
| 33 | </p> | ||
| 34 | <p> | ||
| 35 | If you wish to rerun a task, use the <code class="filename">-f</code> force option. | ||
| 36 | For example, the following sequence forces recompilation after changing files in the | ||
| 37 | working directory. | ||
| 38 | </p> | ||
| 39 | <pre class="literallayout"> | ||
| 40 | $ bitbake matchbox-desktop | ||
| 41 | . | ||
| 42 | . | ||
| 43 | [make some changes to the source code in the working directory] | ||
| 44 | . | ||
| 45 | . | ||
| 46 | $ bitbake matchbox-desktop -c compile -f | ||
| 47 | $ bitbake matchbox-desktop | ||
| 48 | </pre> | ||
| 49 | <p> | ||
| 50 | </p> | ||
| 51 | <p> | ||
| 52 | This sequence first builds <code class="filename">matchbox-desktop</code> and then recompiles it. | ||
| 53 | The last command reruns all tasks (basically the packaging tasks) after the compile. | ||
| 54 | BitBake recognizes that the <code class="filename">compile</code> task was rerun and therefore | ||
| 55 | understands that the other tasks also need to be run again. | ||
| 56 | </p> | ||
| 57 | <p> | ||
| 58 | You can view a list of tasks in a given package by running the | ||
| 59 | <code class="filename">listtasks</code> task as follows: | ||
| 60 | </p> | ||
| 61 | <pre class="literallayout"> | ||
| 62 | $ bitbake matchbox-desktop -c listtasks | ||
| 63 | </pre> | ||
| 64 | <p> | ||
| 65 | The results are in the file <code class="filename">${WORKDIR}/temp/log.do_listtasks</code>. | ||
| 66 | </p> | ||
| 67 | </div></body> | ||
| 68 | </html> | ||