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#!/bin/sh

# Slackware build script for kvm-kmod

# Written by Stu Miller <slackbuilds@go4it2day.com>
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=kvm-kmod
VERSION=${VERSION:-3.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

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

KERNEL=${KERNEL:-$(uname -r)}
KVMGROUP=${KVMGROUP:-users}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.bz2
cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

sed "s,@KVMGROUP@,$KVMGROUP," $CWD/fixup_udev_rules.diff | patch -p1 || exit 1

CFLAGS="$SLKCFLAGS" \
./configure \
  --arch=$ARCH \
  --kerneldir=/lib/modules/$KERNEL/source

make \
  PREFIX=/usr \
  PKGCONFIGDIR=/usr/lib${LIBDIRSUFFIX}/pkgconfig \
  docdir=/usr/doc/$PRGNAM-$VERSION \
  KERNELDIR=/lib/modules/$KERNEL/source
make install \
  PREFIX=/usr \
  PKGCONFIGDIR=/usr/lib${LIBDIRSUFFIX}/pkgconfig \
  KERNELDIR=/lib/modules/$KERNEL/source \
  DESTDIR=$PKG

# Eliminate unused pkgconfig text file
rm -r $PKG/usr/lib${LIBDIRSUFFIX}

# Move /etc/udev to /lib/udev
mv $PKG/etc/udev $PKG/lib

# Make modprobe prefer the new modules in /lib/modules/$KERNEL/updates/
# We don't want to install this with a .new suffix, because we want it
# removed with the package.
#mkdir -p $PKG/etc/depmod.d
#cat << EOF > $PKG/etc/depmod.d/kvm-$KERNEL.conf
#override kvm $KERNEL updates
#override kvm-amd $KERNEL updates
#override kvm-intel $KERNEL updates
#EOF
# This isn't needed any more, it appears - seems that anything in the
# updates/x86/ directory automatically overrides the others.  I'm going
# to leave the above snippet in place at least for now though...

# We don't want the modules.* files in the package
rm -f $PKG/lib/modules/${KERNEL}/modules.*

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
sed "s%@KERNEL@%$KERNEL%" $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}