Kernel Build with Yocto project fails to compile driver

dz_tiger — Tue, 18 Mar 2025 19:51:08 GMT

Hi,

The yoco project builds lx2160ardb-rev2. But my driver needs DRM support. It fails to compile:

error: ‘drm_ioctl’ undeclared here (not in a function);

It is missing drm_ioctl.h, and drm/drm_gem_cma_helper.h is also missing.

What recipes need to be added/modified to generate the above include files?

Thank you,

Tiger

Re: Kernel Build with Yocto project fails to compile driver

yipingwang — Thu, 03 Apr 2025 06:20:59 GMT

File drm_ioctl.h is provided in Linux Kernel in include/drm/drm_ioctl.h.

You need to specify your build PATH in Linux Kernel.

By default, CONFIG_DRM=y is enabled in Linux Kernel configuration.