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From: noel.neu@acoulab.de
To: meta-freescale@lists.yoctoproject.org
Subject: Adding out-of-tree kernel modules & drivers
Date: Thu, 16 Sep 2021 17:04:43 -0700	[thread overview]
Message-ID: <M9hl.1631837083359517032.av1b@lists.yoctoproject.org> (raw)

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Hi,

I am trying to develop a custom ASoC machine driver for an i.MX6 project using yocto.

I have followed the yocto provided 'hello-mod' recipe as an example for out-of-tree kernel modules, but unfortunately this doesn't work for my application since it requires some in-tree header files that cannot be found when the recipe is built.

Another method I tried is to use patches in order to compile this as a usual in-tree driver.
This does work, but I am not getting any error messages if I use this approach. So even if the driver contains some known error that would prevent it from compiling, these are not shown and bitbake completes successfully.

Equally, if I patch the defconfig file to include some config with a made-up false name, it doesn't show that there was an error with this module.

So my questions would be:
- What is the proper way of implementing out-of-tree drivers that rely on in-tree headers?

- if that's now possible, how can I make bitbake show error when compiling the files using the patched method?

Any guidance is highly appreciated !

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                 reply	other threads:[~2021-09-17  0:04 UTC|newest]

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