Re: [Buildroot] [PATCH v1 3/3] boot/uboot: add host-python-pylibfdt dependency if needed

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

On Mon, 31 Jul 2023 16:10:48 +0200
Giulio Benetti <giulio.benetti@benettiengineering.com> wrote:

> U-Boot approach for this is to force Python3 to build libfdtpy[1]
> but what we experience here is a consequence of Buildroot's commit 
> 231d79c81e9a1f8c2ef14861374a40fcdc5e6b33 [2]
> 
> Something happens after that patch has been applied that basically
> passes Buildroot's host dtc to UBOOT_MAKE_OPTS:
> ```
> UBOOT_MAKE_OPTS += DTC=$(HOST_DIR)/bin/dtc
> ```
> The root cause seems to be Python3 anyway as U-Boot patch points.
> 
> Since we can't patch every U-Boot version we could fix Python3 but
> using the approach proposed by Christian is easier to be honest.
> 
> To prove it's a Python3 issue you can see from one of my Gitlab-CI
> failure[3] that various U-Boot versions are different, not the last
> one(2023.07).

Hm, thanks for your feedback, but even after reading 3 times your
e-mail, I still don't grasp what's going on. You've pointed out that
Buildroot commit 231d79c81e9a1f8c2ef14861374a40fcdc5e6b33 is when build
failures starting to occur. But what's the relationship between setting
DTC and U-Boot having issues finding pylibfdt?

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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