5.10.19 linux kernel headers

[shaman]

I need to build a kernel module for NanoPi NEO3.
This requires linux-headers 5.10.19.

The currently installed version is rk3328-sd-friendlycore-lite-focal-5.10-arm64-20210305.img.

Where can I download the linux-headers 5.10.19 package?

[kcozens]

I also need to build some device drivers and require the linux-headers package for the kernel on my NanoPi boards. I need the package for the 4.14.111 version of Linux. The repos provide packages for many kernels except for the one I need. Friendly's build process is broken as they provide disk images for their boards but they fail to provide all of the Linux kernel related packages to go along with the kernels in the disk images they provide.

[igorp]

I also need to build some device drivers and require the linux-headers package for the kernel on my NanoPi boards. I need the package for the 4.14.111 version of Linux. The repos provide packages for many kernels except for the one I need. Friendly's build process is broken as they provide disk images for their boards but they fail to provide all of the Linux kernel related packages to go along with the kernels in the disk images they provide.

This is private kernel and even headers would exists, it won't work. Hint - Armbian provides classes better support.