Yocto: Difference between revisions
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== Images == | == Images == | ||
=== Standard images === | |||
Images are defined in recipe files. In order to separate them from package recipes, there is a convention to put image recipes into a folder named ''images''. Making use of this, we can list all images defined by all layers via | Images are defined in recipe files. In order to separate them from package recipes, there is a convention to put image recipes into a folder named ''images''. Making use of this, we can list all images defined by all layers via | ||
<pre class="terminal"> | <pre class="terminal"> | ||
cd poky | |||
ls meta*/recipes*/images/*.bb | ls meta*/recipes*/images/*.bb | ||
</pre> | </pre> | ||
<br /> | <br /> | ||
The following standard images are defined in the ''meta'' layer: | |||
{| style="padding: 10px;" | |||
! style="width: 20px" | || || | |||
|- | |||
| || ''core-image-minimal'' || small image that just boots the target device | |||
|- | |||
| || ''core-image-minimal-dev'' || ''core-image-minimal'' with headers and libraries allowing development work | |||
|- | |||
| || style="padding-right: 10px" | ''core-image-minimal-initramfs'' || ''core-image-minimal'' with kernel support for in-RAM filesystem | |||
|- | |||
| || '''core-image-base''' || '''console-only system fully supporting the target hardware''' | |||
|- | |||
| || ''core-image-full-cmdline'' || console-only image that includes many system tools | |||
|- | |||
| || ''core-image-x11'' || image with basic X11 and a terminal | |||
|- | |||
|} | |||
== Using devtool == | == Using devtool == | ||
Use '''devtool''' to make changes to an existing recipe and automatically generate an append recipe from those changes. | Use '''devtool''' to make changes to an existing recipe and automatically generate an append recipe from those changes. | ||
Revision as of 2022-11-06T13:02:42
Prerequisites
sudo apt install gcc g++ \ python3-distutils python-is-python3
Images
Standard images
Images are defined in recipe files. In order to separate them from package recipes, there is a convention to put image recipes into a folder named images. Making use of this, we can list all images defined by all layers via
cd poky ls meta*/recipes*/images/*.bb
The following standard images are defined in the meta layer:
| core-image-minimal | small image that just boots the target device | |
| core-image-minimal-dev | core-image-minimal with headers and libraries allowing development work | |
| core-image-minimal-initramfs | core-image-minimal with kernel support for in-RAM filesystem | |
| core-image-base | console-only system fully supporting the target hardware | |
| core-image-full-cmdline | console-only image that includes many system tools | |
| core-image-x11 | image with basic X11 and a terminal |
Using devtool
Use devtool to make changes to an existing recipe and automatically generate an append recipe from those changes.