summaryrefslogtreecommitdiffstats
path: root/meta-agl.md
blob: 0affb6f731e0830800c5a0a5412d44921b6d7fa5 ( @media only all and (prefers-color-scheme: dark) { .highlight .hll { background-color: #49483e } .highlight .c { color: #75715e } /* Comment */ .highlight .err { color: #960050; background-color: #1e0010 } /* Error */ .highlight .k { color: #66d9ef } /* Keyword */ .highlight .l { color: #ae81ff } /* Literal */ .highlight .n { color: #f8f8f2 } /* Name */ .highlight .o { color: #f92672 } /* Operator */ .highlight .p { color: #f8f8f2 } /* Punctuation */ .highlight .ch { color: #75715e } /* Comment.Hashbang */ .highlight .cm { color: #75715e } /* Comment.Multiline */ .highlight .cp { color: #75715e } /* Comment.Preproc */ .highlight .cpf { color: #75715e } /* Comment.PreprocFile */ .highlight .c1 { color: #75715e } /* Comment.Single */ .highlight .cs { color: #75715e } /* Comment.Special */ .highlight .gd { color: #f92672 } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .gi { color: #a6e22e } /* Generic.Inserted */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #75715e } /* Generic.Subheading */ .highlight .kc { color: #66d9ef } /* Keyword.Constant */ .highlight .kd { color: #66d9ef } /* Keyword.Declaration */ .highlight .kn { color: #f92672 } /* Keyword.Namespace */ .highlight .kp { color: #66d9ef } /* Keyword.Pseudo */ .highlight .kr { color: #66d9ef } /* Keyword.Reserved */ .highlight .kt { color: #66d9ef } /* Keyword.Type */ .highlight .ld { color: #e6db74 } /* Literal.Date */ .highlight .m { color: #ae81ff } /* Literal.Number */ .highlight .s { color: #e6db74 } /* Literal.String */ .highlight .na { color: #a6e22e } /* Name.Attribute */ .highlight .nb { color: #f8f8f2 } /* Name.Builtin */ .highlight .nc { color: #a6e22e } /* Name.Class */ .highlight .no { color: #66d9ef } /* Name.Constant */ .highlight .nd { color: #a6e22e } /* Name.Decorator */ .highlight .ni { color: #f8f8f2 } /* Name.Entity */ .highlight .ne { color: #a6e22e } /* Name.Exception */ .highlight .nf { color: #a6e22e } /* Name.Function */ .highlight .nl { color: #f8f8f2 } /* Name.Label */ .highlight .nn { color: #f8f8f2 } /* Name.Namespace */ .highlight .nx { color: #a6e22e } /* Name.Other */ .highlight .py { color: #f8f8f2 } /* Name.Property */ .highlight .nt { color: #f92672 } /* Name.Tag */ .highlight .nv { color: #f8f8f2 } /* Name.Variable */ .highlight .ow { color: #f92672 } /* Operator.Word */ .highlight .w { color: #f8f8f2 } /* Text.Whitespace */ .highlight .mb { color: #ae81ff } /* Literal.Number.Bin */ .highlight .mf { color: #ae81ff } /* Literal.Number.Float */ .highlight .mh { color: #ae81ff } /* Literal.Number.Hex */ .highlight .mi { color: #ae81ff } /* Literal.Number.Integer */ .highlight .mo { color: #ae81ff } /* Literal.Number.Oct */ .highlight .sa { color: #e6db74 } /* Literal.String.Affix */ .highlight .sb { color: #e6db74 } /* Literal.String.Backtick */ .highlight .sc { color: #e6db74 } /* Literal.String.Char */ .highlight .dl { color: #e6db74 } /* Literal.String.Delimiter */ .highlight .sd { color: #e6db74 } /* Literal.String.Doc */ .highlight .s2 { color: #e6db74 } /* Literal.String.Double */ .highlight .se { color: #ae81ff } /* Literal.String.Escape */ .highlight .sh { color: #e6db74 } /* Literal.String.Heredoc */ .highlight .si { color: #e6db74 } /* Literal.String.Interpol */ .highlight .sx { color: #e6db74 } /* Literal.String.Other */ .highli
## Introduction

The `meta-agl` layer provides the minimal set of software
to boot an AGL Distribution system.
You use this layer as the minimal core on which to build AGL profiles.

**NOTE:** The `meta-agl` layer does not include a reference UI.
  The reference UI is included as part of the
  [`meta-agl-demo`](./meta-agl-demo.html) layer.

## Sub-Layers

The `meta-agl` layer itself contains many sub-layers and files.
Following is a "tree" look at the layer:

```
|-- LICENSE
|-- LICENSE.GPL-2.0-only
|-- LICENSE.MIT
|-- README-AGL.md
|-- README.md -> meta-agl.md
|-- agl-layers-overview.md
|-- docs
|-- meta-agl-bsp
|-- meta-agl-core
|-- meta-agl-core-test
|-- meta-agl-ic
|-- meta-agl-ivi
|-- meta-agl.md
|-- meta-app-framework
|-- meta-netboot
|-- meta-pipewire
|-- scripts
`-- templates
```

This list provides some overview information on the files and sub-layers
in `meta-agl`:

* LICENSE* : licenses of the various components. 
* README* : RTFM
* agl-layers-overview.md: references to the various layers that make up AGL
* `docs`: Contains files that support AGL documentation.
* `meta-agl-bsp`: Contains adaptations for recipes and required packages
  to boot an AGL distribution on targeted hardware and emulation (i.e. QEMU).
* `meta-agl-core`: This is the core layer with essential recipes and the distro.
* `meta-agl-core-test`: recipes supporting qa images (separate layer due to external dependencies)
* `meta-agl-ic`: Instrument Cluster platform
* `meta-agl-ivi`: IVI platform
* `meta-app-framework`: Configuration and recipes supporting the AGL Application
  Framework.
* `meta-netboot`: Contains recipes and configuration adjustments to allow network
  boot through network block device (NBD) since network file system (NFS) does not
  support security labels.
* `meta-pipewire`: Configuration and recipes supporting pipewire as audio manager
* `scripts`: AGL development setup and support scripts.
* `templates`: Base, feature, and machine templates used in the AGL development
  environment.

## Packagegroups

This section describes the AGL
[packagegroup](https://yoctoproject.org/docs/2.4.4/dev-manual/dev-manual.html#usingpoky-extend-customimage-customtasks)
design:

### core non-ui packagegroups:
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-connectivity.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-devel.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-security.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-os-commonlibs.bb

### graphical subsystem
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-profile-graphical.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-graphical-multimedia.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-graphical-weston.bb

### image-related packagegroups
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-core-boot.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-image-boot.bb
meta-agl-core/recipes-platform/packagegroups/packagegroup-agl-image-minimal.bb

### QA/Test related packagegroups
meta-agl-core-test/recipes-test/packagegroups
meta-agl-core-test/recipes-test/packagegroups/packagegroup-agl-test.bb

## Images

### (Barely) bootable image
meta-agl-core/recipes-platform/images/agl-image-boot.bb

### minimal image and SDK (console)
meta-agl-core/recipes-platform/images/agl-image-minimal.bb
meta-agl-core/recipes-platform/images/agl-image-minimal-crosssdk.bb

### weston-based image for re-use
meta-agl-core/recipes-platform/images/agl-image-weston.bb

### image for use in the YP autobuilder
meta-agl-core/recipes-platform/images/agl-image-core-autobuilder.bb

### image with extra QA tooling (e.g. to run LTP)
meta-agl-core-test/images/agl-image-minimal-qa.bb