#!/bin/sh

PRGNAM=kernel-default
VERSION=${VERSION:-2.4.33.3}
ARCH=${ARCH:-s390x}
BUILD=${BUILD:-1}

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=${TMP}/package-${PRGNAM}

NUMJOBS=${NUMJOBS:--j3}

if [ "${ARCH}" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "${ARCH}" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "${ARCH}" = "s390x" ]; then
  SLKCFLAGS="-O2"
elif [ "${ARCH}" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
fi

rm -rf ${TMP}/${PRGNAM}-${VERSION} ${PKG}
mkdir -p ${TMP}/${PRGNAM}-${VERSION}/usr/src ${PKG}
cd ${TMP}/${PRGNAM}-${VERSION}/usr/src || exit 1
echo "Unpacking the tarball.  Please wait..."
tar -jxf ${CWD}/../../k/linux-${VERSION}.tar.bz2

cd linux-${VERSION} || exit 1
chown -R root.root .
chmod -R a-s,u+rw,go-w .

zcat ${CWD}/../../k/s390-patches/lnx24333-36.timer.gz | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/reiserfs.strcpy.fix.diff | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/dasd_int.h.diff | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/chandev.c.diff | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/tape.h.diff | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/tubttybld.c.diff | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/qeth.c.diff | patch -p1 || exit 1
cat ${CWD}/../../k/s390-patches/lcs.c.diff | patch -p1 || exit 1

cp -vpi ${CWD}/../../k/config-s390-${VERSION} .config || exit 1
ARCH="s390" make oldconfig || exit 1
ARCH="s390" make dep || exit 1
ARCH="s390" make ${NUMJOBS} image || exit 1

mkdir ${PKG}/boot ${PKG}/install
cp -p arch/s390x/boot/image ${PKG}/boot/image-${VERSION}
cp -p System.map ${PKG}/boot/System.map-${VERSION}
cp -p ${CWD}/../../k/config-s390-${VERSION} \
    ${PKG}/boot/config-${VERSION}

cd ${PKG}/boot
rm -f System.map ; ln -s System.map-${VERSION} System.map
rm -f image      ; ln -s image-${VERSION} image
rm -f config     ; ln -s config-${VERSION} config

cd ${PKG}/install
cat ${CWD}/slack-desc.s390 > slack-desc 

cd ${PKG}
makepkg -c n -l y ../${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz