CWD=$(pwd)

TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

KVERSION=${KVERSION:-2.6.34.7}
EXTRA_VER=${EXTRA_VER:=-gen}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}

RC_MODULES=rc.modules-${KVERSION}$EXTRA_VER

PKG=${TMP}/package-kernel-modules

rm -rf $PKG
mkdir -p $PKG $OUT

set -e

echo "Building kernel-modules-${KVERSION}$EXTRA_VER..."

mkdir -p ${PKG}/lib/modules
cp -a \
 /lib/modules/${KVERSION}$EXTRA_VER \
 ${PKG}/lib/modules

mkdir -p ${PKG}/etc/rc.d
( cd ${PKG}/etc/rc.d
  zcat ${CWD}/${RC_MODULES}.gz > $RC_MODULES
  chown 0:0 $RC_MODULES
  chmod 755 $RC_MODULES
  ln -s $RC_MODULES rc.modules
)

mkdir -p ${PKG}/sbin
cat ${CWD}/modtool > ${PKG}/sbin/modtool
chown 0:0 $PKG/sbin/modtool
chmod 750 $PKG/sbin/modtool

mkdir -p ${PKG}/description
cp ${CWD}/descriptions/modules-generic/* ${PKG}/description/

mkdir -p ${PKG}/install
cat << EOF > ${PKG}/install/post-install
# Update modules:
if [ -x sbin/depmod ]; then
  chroot . /sbin/depmod -a ${KVERSION}$EXTRA_VER 1> /dev/null 2>&1
fi

EOF

cd $PKG
makepkg -l \
 ${OUT}/kernel-modules-${KVERSION}$(echo $EXTRA_VER | tr - _)-$ARCH-$BUILD.tlz

# Delete temporary directories:
if [[ $1 = -c || $1 = --clean ]]; then
  rm -rf $PKG
fi