url=$mirror/kernel.tar.gz fetch() { wget -c $url -O src/kernel.tar.gz } unpack() { pushd src [ -d linux-3.11.1 ] || tar xzf kernel.tar.gz popd } build() { pushd src/linux-3.11.1 cp $top/stuff/kernel-config .config # make menuconfig make bzImage -j$nprocs popd } install() { pushd src/linux-3.11.1 cp arch/x86/boot/bzImage $root/boot popd }