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1 | ************ | ||
2 | Introduction | ||
3 | ************ | ||
4 | |||
5 | Toaster is a web interface to the Yocto Project's `OpenEmbedded build | ||
6 | system <&YOCTO_DOCS_REF_URL;#build-system-term>`__. The interface | ||
7 | enables you to configure and run your builds. Information about builds | ||
8 | is collected and stored in a database. You can use Toaster to configure | ||
9 | and start builds on multiple remote build servers. | ||
10 | |||
11 | .. _intro-features: | ||
12 | |||
13 | Toaster Features | ||
14 | ================ | ||
15 | |||
16 | Toaster allows you to configure and run builds, and it provides | ||
17 | extensive information about the build process. | ||
18 | |||
19 | - *Configure and Run Builds:* You can use the Toaster web interface to | ||
20 | configure and start your builds. Builds started using the Toaster web | ||
21 | interface are organized into projects. When you create a project, you | ||
22 | are asked to select a release, or version of the build system you | ||
23 | want to use for the project builds. As shipped, Toaster supports | ||
24 | Yocto Project releases 1.8 and beyond. With the Toaster web | ||
25 | interface, you can: | ||
26 | |||
27 | - Browse layers listed in the various `layer | ||
28 | sources <#layer-source>`__ that are available in your project | ||
29 | (e.g. the OpenEmbedded Layer Index at | ||
30 | ` <http://layers.openembedded.org/layerindex/>`__). | ||
31 | |||
32 | - Browse images, recipes, and machines provided by those layers. | ||
33 | |||
34 | - Import your own layers for building. | ||
35 | |||
36 | - Add and remove layers from your configuration. | ||
37 | |||
38 | - Set configuration variables. | ||
39 | |||
40 | - Select a target or multiple targets to build. | ||
41 | |||
42 | - Start your builds. | ||
43 | |||
44 | Toaster also allows you to configure and run your builds from the | ||
45 | command line, and switch between the command line and the web | ||
46 | interface at any time. Builds started from the command line appear | ||
47 | within a special Toaster project called "Command line builds". | ||
48 | |||
49 | - *Information About the Build Process:* Toaster also records extensive | ||
50 | information about your builds. Toaster collects data for builds you | ||
51 | start from the web interface and from the command line as long as | ||
52 | Toaster is running. | ||
53 | |||
54 | .. note:: | ||
55 | |||
56 | You must start Toaster before the build or it will not collect | ||
57 | build data. | ||
58 | |||
59 | With Toaster you can: | ||
60 | |||
61 | - See what was built (recipes and packages) and what packages were | ||
62 | installed into your final image. | ||
63 | |||
64 | - Browse the directory structure of your image. | ||
65 | |||
66 | - See the value of all variables in your build configuration, and | ||
67 | which files set each value. | ||
68 | |||
69 | - Examine error, warning, and trace messages to aid in debugging. | ||
70 | |||
71 | - See information about the BitBake tasks executed and reused during | ||
72 | your build, including those that used shared state. | ||
73 | |||
74 | - See dependency relationships between recipes, packages, and tasks. | ||
75 | |||
76 | - See performance information such as build time, task time, CPU | ||
77 | usage, and disk I/O. | ||
78 | |||
79 | For an overview of Toaster shipped with the Yocto Project DISTRO | ||
80 | Release, see the "`Toaster - Yocto Project | ||
81 | 2.2 <https://youtu.be/BlXdOYLgPxA>`__" video. | ||
82 | |||
83 | .. _toaster-installation-options: | ||
84 | |||
85 | Installation Options | ||
86 | ==================== | ||
87 | |||
88 | You can set Toaster up to run as a local instance or as a shared hosted | ||
89 | service. | ||
90 | |||
91 | When Toaster is set up as a local instance, all the components reside on | ||
92 | a single build host. Fundamentally, a local instance of Toaster is | ||
93 | suited for a single user developing on a single build host. | ||
94 | |||
95 | Toaster as a hosted service is suited for multiple users developing | ||
96 | across several build hosts. When Toaster is set up as a hosted service, | ||
97 | its components can be spread across several machines: | ||