if [ "$EUID" = 0 ]
then echo "Please don't run this as root"
    exit
fi

if [ ! -d src ]
then
    wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.15.5.tar.xz
    mkdir src
    mv linux-5.15.5.tar.xz src/
    cd src
        tar xf linux-5.15.5.tar.xz
        rm linux-5.15.5.tar.xz
        mv linux-5.15.5/* .
        rm -rf linux-5.15.5

    cd -

fi
cd src
# make clean qui supprime le .config
#make mrproper
cp ../.config .config
make -j$(nproc) bzImage
make -j$(nproc) modules
sudo cp arch/x86_64/boot/bzImage ../../rootfs/boot/vmlinuz || exit 1
sudo cp System.map ../../rootfs/boot/System.map || exit 1

DESTDIR=$(pwd)/../../rootfs
sudo make modules_install INSTALL_MOD_PATH=$(realpath $DESTDIR) || exit 1
cd -