Re: is there a recent explanation of tricks you can play with MACHINEOVERRIDES?

Quentin Schulz

Hi Robert,

On March 19, 2021 9:54:34 AM UTC, "Robert P. J. Day" <rpjday@...> wrote:

years ago, i asked about how to support a small set of
closely-related targets using MACHINEOVERRIDES to define how to apply
patches in a (somewhat) hierarchical fashion:

is there any current BSP that does something like that? and is this
sort of thing worth expanding on and adding to one of the manuals?
Don't use _prepend but =. BEFORE the other includes in your machine configuration files otherwise the order in MACHINEOVERRIDES is incorrect. Do NOT use append, or .=, they result in incorrect order too.

I do use this mechanism because we kind of use Yocto machines the wrong way (basically using machines instead of distros or more complex images).

I think NXP is making extensive use of this variable by defining a MACHINEOVERRIDES per SoC families (e.g. imx:imx8:imx8mm).

I'm not sure we need to explain all possible uses of OVERRIDES variables, just how to set it and how it works.

Hope this helps,



Robert P. J. Day Ottawa, Ontario, CANADA

Sent from my Android device with K-9 Mail. Please excuse my brevity.

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