Hi Ayoub, On Tue, May 26, 2020 at 04:36:13PM +0200, Ayoub Zaki via lists.yoctoproject.org wrote: > Hi, > > I would like to make changes on systemd.bblcass in my layer. > > I can create new one e.g my-systemd.bbclass to overwrite the default one > but this will not work since I want that ALL recipes in all layers I'm > using to make usage of it. > > are there ways to achieve this? >
BBPATH[1] is what's used to locate bbclasses. It's defined in your conf/layer.conf. You can either make sure your layer is parsed before the one having the original systemd.bbclass (in BBLAYERS of conf/bblayers.conf) or prepend to BBPATH instead of appending. Although... It's usually bad practice because it means that if I were to use two layers doing the same thing (overriding the same bbclass), the behavior is kind of undefined depending on which order they are parsed. Ideally, you should contribute back the modifications to upstream systemd.bbclass, that way, no need to duplicate it and override it from somewhere else. [1] https://www.yoctoproject.org/docs/current/mega-manual/mega-manual.html#var-BBPATH Cheers, Quentin
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