Where to find libkms ?

[destroyedlolo 0]

Hello,

 

I'm porting one of my application to Armbian. But where can I found libkms ?

I did a apt-cache search but it didn't found anything ?

 

Thanks

 

Laurent

[Werner 409]

If it is not provided by upstream (Debian or Ubuntu to say) you may need to build it on your own.

[destroyedlolo 0]

Well, it is supposed to be part of libdrm but has been disabled as per a ticket I found.

The only examples I found to directly use Linux' frame buffer using DRM use it to retrieve display geometry and bitmap

 

[xwiggen 6]

you can use https://github.com/Caesar-github/libdrm-rockchip/tree/rockchip-2.4.101-2-ubuntu18.04 as an example;

copy the libkms entry from debian/control over to the libdrm sources, set libkms=true in  debian/rules, add dh_makeshlibs -plibkms1 -V'libkms1 (>= 2.4.89)' -- -c4 to rules after override_dh_makeshlibs.

 

 

[destroyedlolo 0]

ok, thanks : I'll try.

As I would avoid to force users to recompile system's packages, I patched my framework as well to fall back to framebuffer as well.

[xwiggen 6]

Retropie has a fork (https://github.com/RetroPie/mesa-drm) which builds libkms for this purpose.