#!/bin/bash

hvbuild()
{
    # Decompress kernel sources
    decompress_package ${PACKAGE} ${LFS}/usr/src

    apply_patches ${PACKAGE} ${LFS}/usr/src

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

    # Remove modules support
    sed -i -e "s!CONFIG_MODULES=y!CONFIG_MODULES=n!" ${LFS}/usr/src/${PACKAGE}/.config

    # Install HV kernel compilation script:
    VERSION=$(get_pkg_ver ${PACKAGE})
    SCRIPT=${LFS}/usr/src/compile-kernel-minimal

    echo "#!/bin/bash" > ${SCRIPT}
    echo "set -o errexit" >> ${SCRIPT}
    echo "KERNEL_VERSION=${VERSION}" >> ${SCRIPT}
    echo "KERNEL_NAME=clfs-\${KERNEL_VERSION}" >> ${SCRIPT}
    echo "DEST=${LFS}/boot" >> ${SCRIPT}
    echo "PATH=\${PATH}:${LFS}/cross-tools/bin" >> ${SCRIPT}
    echo "" >> ${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.
    echo 'yes "" | make ARCH=${CLFS_ARCH} CROSS_COMPILE=${CLFS_TARGET}- oldconfig' >> ${SCRIPT}

    echo "#make ARCH=${CLFS_ARCH} CROSS_COMPILE=${CLFS_TARGET}- menuconfig" >> ${SCRIPT}

    # Compile the kernel image:
    echo "make ARCH=${CLFS_ARCH} CROSS_COMPILE=${CLFS_TARGET}-" >> ${SCRIPT}

    # Install the kernel:
    echo "cp -v arch/${CLFS_ARCH}/boot/bzImage \${DEST}/vmlinuz-\${KERNEL_NAME}" >> ${SCRIPT}
    echo "ln -svf vmlinuz-\${KERNEL_NAME} \${DEST}/vmlinuz" >> ${SCRIPT}

    # Install map file:
    echo "cp -v System.map \${DEST}/System.map-\${KERNEL_NAME}" >> ${SCRIPT}

    # Install config file:
    echo "cp -v .config \${DEST}/config-\${KERNEL_NAME}" >> ${SCRIPT}

    chmod -v u+x ${SCRIPT}

    cd ${LFS}/usr/src/${PACKAGE}

    # Execute compilation script
    ${SCRIPT}
}