Re: [Buildroot] [PATCH 1/1] package/qt6/qt6shadertools: new package

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

Hello Jesse,

On Sat, 26 Aug 2023 22:04:19 +0200
Jesse Van Gavere <jesseevg@gmail.com> wrote:

> > For the target package, it would be easy to fix. But for the host
> > qt6base package, the story is a bit different. Does qt6shadertools
> > really need GUI support in host-qt6base? If so, how did you test that
> > as nothing in Buildroot right now allows to enable GUI support in
> > host-qt6base?
> >  
> Yeah another oversight, I probably built it with GUI temporarily in and
> forgot about it, the host package is necessary though as this will install
> qsb which is a requirement for the follow-up qt declarative package I want
> to add (at least for QtQuick support)

If qsb is only needed for the follow-up qt declarative package, then it
should only be built as a dependency of this, and not as a dependency
of the target qt6shadertools.

> and I'm not aware of a mechanism that
> allows for conditional host package builds, if it's available though I'll
> take a look, otherwise I'll always do the host build jit for that case, but
> I'll at least check for adding the host GUI support, a slight casualty of
> Qt their new host/target split

See package/python3/Config.in.host. Packages that need bzip2 support or
SSL support in host-python3 can select BR2_PACKAGE_HOST_PYTHON3_BZIP2
or BR2_PACKAGE_HOST_PYTHON3_SSL.

So you will need a package/qt6/qt6base/Config.in.host with a
BR2_PACKAGE_HOST_QT6BASE_GUI, and tweak qt6base.mk to build
host-qt6base with GUI support if BR2_PACKAGE_HOST_QT6BASE_GUI=y. Of
course one question will be: which display backend you will enable...

Best regards,

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