i port openwrt to my dev board ,so i want use openwrt but include kernel
.... include A kernel, or YOUR kernel ?
i just use my kernel and openwrt rootfs，but i dont know how to build rootfs. my board not support in openwrt
check the configurations for supported devices, using a separate rootfs and kernel, like x86.
my board is arm device . supported devices have on of like x86?
What I'm saying is, use the x86 target to see how the image is generated, then adapt the same for your arch.
i try and thank you