#!/bin/sh

# Reading system configuration informations, functions and package versions.
source ../sysinfos
source ../functions
source ../packages-list

# The ARCH variable must be exported for this script
# to work correctly for architectures other than PC.
#   eg. export ARCH=powerpc

# We don't compile anything, we only install headers
#unset CROSS_COMPILE &&

SYSROOT=${SYSROOT:-""}

# Applying patches (if any)
apply_patches ${1} &&

# Move files to their final destination 
mkdir -pv ${SYSROOT}/usr/src &&
mv ${LFS_TMP}/${1} ${SYSROOT}/usr/src &&

# Remove any previous link. Otherwise, the
# new link would be created inside kernel directory.
cd ${SYSROOT}/usr/src &&
rm -fv linux &&
ln -sfv ${1} linux &&

# First step, install kernel API headers:
cd ${SYSROOT}/usr/src/${1} &&
make -j ${MAKEJOBS} mrproper &&
make -j ${MAKEJOBS} headers_check &&
make -j ${MAKEJOBS} INSTALL_HDR_PATH=dest headers_install &&
mkdir -pv ${SYSROOT}/usr/include &&
cp -rv dest/include/* ${SYSROOT}/usr/include &&

# Second, install HV kernel compilation script:
cd ${SYSROOT}/usr/src &&

VERSION=$(get_pkg_ver ${1}) &&

echo "#!/bin/sh" > compile-kernel &&
echo "KERNEL_VERSION=${VERSION}" >> compile-kernel &&
echo "DEST=/boot" >> compile-kernel &&
cat >> compile-kernel << "EOF" &&

make bzImage &&
make modules &&
make modules_install &&

cp arch/x86/boot/bzImage ${DEST}/vmlinuz-${KERNEL_VERSION} &&
cp System.map            ${DEST}/System-${KERNEL_VERSION}.map &&
cp .config               ${DEST}/config-${KERNEL_VERSION}

if [ $? -ne 0 ]; then
    echo "*** Kernel compilation error ***."
    exit 1
fi

exit 0
EOF

chmod -v u+x compile-kernel

# Return last error
exit $?