#!/bin/bash

hvbuild()
{
    rm -rf /usr/src/${PACKAGE}
    mv ${SRC_DIR} /usr/src

    cd /usr/src/${PACKAGE}

    # Install kernel checkpatch script
    install scripts/checkpatch.pl /usr/bin

    # Copy kernel configuration file in source tree.
    cp -v ${SCRDIR}/../config/${KERNEL_CONFIG} .config

    # Install HV kernel compilation script:
    COMPILE_SCRIPT=/usr/src/compile-kernel

    cat > ${COMPILE_SCRIPT} << "EOF"
#!/bin/bash
set -o errexit

MAKEJOBS=4
ROOTDIR=/
DEST=${ROOTDIR}/boot
ARCH=_HVL_TARGET_
unset CROSS_COMPILE

make -j ${MAKEJOBS}
make -j ${MAKEJOBS} modules
make INSTALL_MOD_PATH=${ROOTDIR} modules_install

KERNEL_VERSION=$(make -s kernelrelease)
KERNEL_NAME=vmlinuz

cp -v arch/${ARCH}/boot/bzImage ${DEST}/${KERNEL_NAME}-${KERNEL_VERSION}
ln -svf ${KERNEL_NAME}-${KERNEL_VERSION} ${DEST}/${KERNEL_NAME}
cp -v System.map ${DEST}/System.map-${KERNEL_VERSION}
cp -v .config ${DEST}/config-${KERNEL_VERSION}
EOF

    sed -i -e "s!_HVL_TARGET_!${HVL_TARGET}!g" ${COMPILE_SCRIPT}
    chmod -v u+x ${COMPILE_SCRIPT}

    # The 'yes' command repeatedly output a line with all specified string, or
    # 'y' by default. So, you can use it to simply "press enter", which will
    # result in using the defaults value for the 'make oldconfig' command.
    yes "" | make oldconfig

    # Execute compilation script
    ${COMPILE_SCRIPT}
}