Internal Program Version: libdrm-2.4.75

Libdrm provides a user space library for accessing the DRM, direct
rendering manager, on operating systems that support the ioctl
interface. Libdrm is a low-level library, typically used by graphics
drivers such as the Mesa DRI drivers, the X drivers, libva and
similar projects. 

https://dri.freedesktop.org/libdrm/