krfb: add pipewire dependency

[ghost]

Testing the changes

• I tested the changes in this PR: YES

Local build testing

• I built this PR locally for my native architecture, (x86_64-glibc)

This enables remote desktop functionality in KDE wayland

[ghost]

Adding qt5-wayland to hostmakedepends makes the cmake error go away, but a new error pops up while compiling:
[1/48] Generating wayland-zkde-screencast-unstable-v1-client-protocol.h FAILED: framebuffers/pipewire/wayland-zkde-screencast-unstable-v1-client-protocol.h /builddir/krfb-21.12.1/build/framebuffers/pipewire/wayland-zkde-screencast-unstable-v1-client-protocol.h cd /builddir/krfb-21.12.1/build/framebuffers/pipewire && /usr/armv7l-linux-gnueabihf/usr/bin/wayland-scanner client-header /usr/armv7l-linux-gnueabihf/usr/share/plasma-wayland-protocols/screencast.xml /builddir/krfb-21.12.1/build/framebuffers/pipewire/wayland-zkde-screencast-unstable-v1-client-protocol.h /bin/sh: line 1: /usr/armv7l-linux-gnueabihf/usr/bin/wayland-scanner: cannot execute binary file: Exec format error
So seems like the cross compiler tries to invoke the wayland-scanner of the host which doesn't work. Adding qt5-wayland to the normal makedepends instead doesn't solve the cmake error though.

[Johnnynator]

Add -DWaylandScanner_EXECUTABLE=/usr/bin/wayland-scanner to configure_args.

[ghost]

I don't know what I did, but I can't reproduce my earlier issue anymore. Now I always get this error (with or without the added configure_args):

[1/18] Generating wayland-zkde-screencast-unstable-v1-client-protocol.h FAILED: framebuffers/pipewire/wayland-zkde-screencast-unstable-v1-client-protocol.h /builddir/krfb-21.12.1/build/framebuffers/pipewire/wayland-zkde-screencast-unstable-v1-client-protocol.h cd /builddir/krfb-21.12.1/build/framebuffers/pipewire && /usr/bin/wayland-scanner client-header /usr/armv7l-linux-gnueabihf/usr/share/plasma-wayland-protocols/screencast.xml /builddir/krfb-21.12.1/build/framebuffers/pipewire/wayland-zkde-screencast-unstable-v1-client-protocol.h /bin/sh: line 1: /usr/bin/wayland-scanner: No such file or directory

[Johnnynator]

You need to add/keep qt5-wayland in hostmakedepends.

[ghost]

Seems like it didn't work, any other ideas?

[Johnnynator]

Also needs wayland-devel. I picked you commits and merged them into my kde staging branch together with an update to 21.12.2., so will be in the main repo somewhen this weekend most likely.

Seems to work as good (or bad) as intended by upstream. (Sadly kwin doesn't support keyboard input with pipewire yet)