[OpenJDK][Headless] Allow compilation without X11

[Thomas Devoogdt]

Hi,


Anyone out there?


Kind regards,

Thomas Devoogdt

Op wo 26 nov 2025, 10:39 schreef Thomas Devoogdt <thomas at devoogdt.com>:

> Hi all,
>
>
> I'm trying to compile OpenJDK in headless mode without the required
> X11 libraries.
> This becomes more common in embedded systems, where e.g. no head is used
> at all,
> or where e.g. only wayland is available.
>
> For this, I proposed a patch in buildroot, see
>
> https://patchwork.ozlabs.org/project/buildroot/patch/20251115154030.1746780-1-thomas@devoogdt.com/
> .
> Buildroots policy is to upstream any custom patch when applicable, for
> which I created
> https://github.com/openjdk/jdk/pull/28310.
>
> The first question, is there any interest to support compilation
> without X11 in headless mode?
> If yes, who can create a formal "issue" and pick this up as my "sponsor"?
>
> If this PR gets merged, is there any interest to backport this to the
> relevant LTS
> distributions? Buildroot ships JDK with the somewhat outdated versions
> 17 and 21?
>
>
> Kind regards,
>
> Thomas Devoogdt
>
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