Source of kernel : my-linux-custom/
Output build : yocto-dir/my-linux-custom-yocto/

cd my-linux-custom/
make mrproper
export ARCH=arm CROSS_COMPILE=...
cp my-recipe/defconfig yocto-dir/my-linux-custom-yocto/
make O=my-recipe/defconfig yocto-dir/my-linux-custom-yocto/ menuconfig
make O=my-recipe/defconfig yocto-dir/my-linux-custom-yocto/