Re: [ptxdist] Layer Support in PTXdist

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Thu, Sep 27, 2018 at 10:06:09AM +0200, Roland Peffer wrote:
> I have not tried to set up a layer yet, but at least some questions popped up in my mind:
> 
> 1) How to create a layer, Do I have to create the base folder and content
> manually, or is there some command or script?

Manually. A layer without any changes is just an empty directory, so I'm
not sure what a command or script would create.

> 2.) How do I call the ptxmenu to configure differences in a layer. E.g.
> cd ./base and then ptxdist menu

Yes exactly. Each layer is like a BSP. Just 'cd' into the layer and you can
call all PTXdist commands.

> 3) Is the layer folder name always “base"? E.g. I have various products
> that I want to handle by layers. Do I have to create corresponding
> folders for each product  and a switch to them a symbolic link named base
> to activate them?

It's always 'base'. If I understand your use-case correctly, then you
should reverse the stacking order:

CommonLayer/ # shared stuff
Product-A/   # stuff for this product
Product-A/base -> ../CommonLayer/ # reuse the shared layer
Product-B/   # stuff for this product
Product-B/base -> ../CommonLayer/ # reuse the shared layer

> These questions and maybe more where the case why I asked for a tutorial
> how to create and configure a layer.

I understand. I'd like to have a section in the 'Daily Work' chapter, with
an example like this. Not sure when I find the time for this.

Michael

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