meson.build: rename fbdev option to fix -Dbackend-default=fbdev

Rename deprecated-backend-fbdev option to backend-deprecated-fbdev to fix the following build failure with -Dbackend-default=fbdev raised since version 10.0.0 and 6338dbd5:

../output-1/build/weston-10.0.0/meson.build:133:7: ERROR: Tried to access unknown option 'backend-fbdev'.

This MR is an improvement over !787 (merged)

Fixes:

• http://autobuild.buildroot.org/results/e669a6237c19783c627169c819d7372e20daaf54

Signed-off-by: Fabrice Fontaine fontaine.fabrice@gmail.com

This MR is an improvement over !787 (merged)

Why is that? I prefer the other MR.

Because !787 (merged) doesn't fix -Dbackend-default=fbdev, it only fixes -Dbackend-default=auto.

If this MR is not accepted, then I assume that we should drop -Dbackend-default or fbdev on buildroot to fix this build failure raised by our autobuilders.

BTW, looking at the config, you can absolutely have the DRM backend without GBM. Just don't build with renderer-gl=true and use the Pixman renderer instead. We're planning to remove the fbdev backend entirely very soon (hence the deprecation).

I would also prefer a solution which doesn't involve changing option names in stable releases.

Then, the best solution is probably to drop fbdev on buildroot side.

I'm closing this MR. fbdev support was dropped from buildroot with https://git.buildroot.net/buildroot/commit/?id=72021742574acd4d43ee1977cd2af3133245787a

closed