# Install build deps:
sudo apt-get -y install build-essential crossbuild-essential-armhf u-boot-tools
# Build options:
kerneldir=~/tmp/linux   # where kernel sources located
targetdir=~/tmp/kernel  # where to install kernel and modules
MAKEOPTS="-j4"          # number of CPU cores you have
compiler=/usr/bin/arm-linux-gnueabi-
arch=arm
# Configure kernel:
cd $kerneldir/ &&
make mrproper &&
make ARCH=$arch CROSS_COMPILE=$compiler menuconfig
# Build kernel:
make $MAKEOPTS ARCH=$arch CROSS_COMPILE=$compiler zImage modules omap3-n900.dtb
# Install:
cat arch/arm/boot/zImage arch/arm/boot/dts/omap3-n900.dtb > zImage &&
make $MAKEOPTS ARCH=$arch CROSS_COMPILE=$compiler INSTALL_MOD_PATH=$targetdir INSTALL_MOD_STRIP=1 modules_install &&
mkimage -A arm -O linux -T kernel -C none -a 80008000 -e 80008000 -n zImage -d zImage uImage &&
mkdir -p $targetdir/boot && cp -v zImage uImage $targetdir/boot/ &&
echo OK || echo FAIL