This repository contains Yocto recipes for building PAPPL for your embedded Linux printing projects. PAPPL is a simple C-based framework/library for developing CUPS Printer Applications, which are the recommended replacement for printer drivers. When used in an embedded Linux environment, it is possible to make existing (or new!) printers compatible with basically all mobile and desktop operating systems with a single printer application.

PAPPL also supports the Linux USB gadget API so that your embedded device can be connected to a desktop computer and show up as a regular USB printer.

Typically you will use a Git submodule to import this repository into one of your "meta" layers, e.g.:

cd meta-myproject
git submodule add https://github.com/michaelrsweet/recipes-pappl.git

From there you just add a dependency on "pappl" to get PAPPL and its dependencies added to your image(s).

Note: The "master" branch of this repository tracks the current stable release of PAPPL...

For USB gadget support you'll need to enable CONFIG_USB_CONFIGFS_F_PRINTER and CONFIG_USB_G_PRINTER (set to "m") in your Linux kernel "defconfig" file.

PAPPL is Copyright © 2019-2023 by Michael R Sweet.

This software is licensed under the Apache License Version 2.0 with an (optional) exception to allow linking against GPL2/LGPL2 software (like older versions of CUPS). See the files "LICENSE" and "NOTICE" for more information.