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Changing the folder that holds the YP Reference Manual to be "ref-manual". This will help with confustion over the manual's intended purpose. (From yocto-docs rev: 1106442964b5080cb0b6b3bd3af32e9407c0f7c1) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
32 lines
1.9 KiB
HTML
32 lines
1.9 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>3.2.1. Overall Architecture</title>
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<link rel="stylesheet" type="text/css" href="../book.css">
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<meta name="generator" content="DocBook XSL Stylesheets V1.76.1">
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<link rel="home" href="index.html" title="The Yocto Project Reference Manual">
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<link rel="up" href="shared-state-cache.html" title="3.2. Shared State Cache">
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<link rel="prev" href="shared-state-cache.html" title="3.2. Shared State Cache">
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<link rel="next" href="checksums.html" title="3.2.2. Checksums (Signatures)">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="section" title="3.2.1. Overall Architecture">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="overall-architecture"></a>3.2.1. Overall Architecture</h3></div></div></div>
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<p>
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When determining what parts of the system need to be built, BitBake
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uses a per-task basis and does not use a per-recipe basis.
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You might wonder why using a per-task basis is preferred over a per-recipe basis.
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To help explain, consider having the IPK packaging backend enabled and then switching to DEB.
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In this case, <code class="filename">do_install</code> and <code class="filename">do_package</code>
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output are still valid.
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However, with a per-recipe approach, the build would not include the
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<code class="filename">.deb</code> files.
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Consequently, you would have to invalidate the whole build and rerun it.
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Rerunning everything is not the best situation.
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Also in this case, the core must be "taught" much about specific tasks.
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This methodology does not scale well and does not allow users to easily add new tasks
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in layers or as external recipes without touching the packaged-staging core.
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</p>
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</div></body>
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</html>
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