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imx6ul: Yocto toolchain can't build kernel modules

Question asked by Sudo Masaaki on Sep 14, 2016
Latest reply on Sep 14, 2016 by Bio_TICFSL

In an sdk built with

bitbake core-image-directfb -c populate_sdk

there is no lib/modules/<kernel_version>/build folder to do kernel modules building, only lib/modules/<kernel_version>.

To my config file I added 

TOOLCHAIN_TARGET_TASK_append = " kernel-devsrc kernel-dev packagegroup-core-buildessential"

but still no result. Now I'm building kernel modules over ~/fsl-community-bsp/build/tmp/work/imx6ulevk-poky-linux-gnueabi/linux-imx/4.1.15-r0/build/ folder and it works, but it's an overkill. Working in a team I want to give others toolchain so that they can build kernel modules using it. What do I have to add to config file so that my toolchain would have modules "build" folder? Any solution?