[PATCH] tools: add libyaml

[Paul Spooren]

On 30.07.20 03:17, Daniel Golle wrote:
> On Thu, Jul 30, 2020 at 02:55:33PM +0200, Petr Štetiar wrote:
>> Paul Spooren <mail at aparcar.org> [2020-07-29 12:45:25]:
>>
>>> Once available this can be used within a CI to reduce human resources
>>> spent on reviewing DTS files.
>> That's indeed cool, but I quite fail to see why this needs to be in the tree
>> right now. I would understand this patch as part of a bigger patch series
>> which would add somehow minimal/proof-of-concept yet complete YAML/DTS
>> validation support to the tree.
>>
>> So in the end, both CI bot and developer on local machine could run same
>> commands, like `make validate-dts target/linux/foo/dts/bar.dts` etc.
I'll build this as a wrapper around the existing build system. As we 
require dt-schema anyway, we might as well require to install a yaml 
compatible dtc
> Yes, but this is only easily possible if dtc (in scripts/dtc/ in the
> kernel tree) was build with support for libyaml. The easiest way to
> achieve that is to have it built as a host tool.
> This would allow for further integrating check_* features into OpenWrt
> workflow similar to how we are already doing it for many other common
> maintainance tasks (make package/foo/refresh, ...)
>
>> Meanwhile I would simply add all the missing bits into separate Docker image
>> tailored specifically for DTS validation on CI. Or we could even add those
>> bits into the `openwrt-ci/native-testing` container image.
>>
> Sure, for the CI you can just make sure libyaml-dev is present in the
> container...