What I'm looking for is up to date instructions on how to install and build the Ubuntu 20.10 5.8.0-1015-raspi kernel and module?. Please note I don not want to compile the Raspberry PI OS kernel or modules.
Or if thats not possible to cross compile it from whatever environment it can be built on?
I'm attempted to build the Ubuntu 20.10 kernel and modules for aarch64 using instructions I've found using web searches (https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel). The reason being is there are modules missing from the ubuntu build that are in the generic ARM64 build that I would like to use in the RASPI distribution.
Its been a number of decades since I built a kernel and thus far I've not managed to successfully compile one..
root@ys:/usr/src/linux-source-5.8.0/linux-raspi-5.8.0# make CALL scripts/checksyscalls.sh CALL scripts/atomic/check-atomics.sh CHK include/generated/compile.h CC [M] drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.o In file included from ./include/media/v4l2-subdev.h:15, from ./include/media/v4l2-device.h:13, from drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c:20: drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c: In function xe2x80x98buffer_cbxe2x80x99: drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c:333:35: error: xe2x80x98struct mmal_bufferxe2x80x99 has no member named xe2x80x98lengthxe2x80x99 333 | __func__, status, buf, mmal_buf->length, mmal_buf->mmal_flags,