#!/bin/sh

# Slackware build script for kvm
#
# Written by Murat D. Kadirov <banderols@gmail.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
VERSION=${VERSION:-85}
ARCH=i386
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

KERNELVERSION=${KERNELVERSION:-$(uname -r)}
PKG_VERS=${VERSION}_$(echo $KERNELVERSION | tr - _)

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

SLKCFLAGS="-O2"         # Yes, this is intentional

# Needed to build man pages if build is ran from su
export PATH=$PATH:/usr/share/texmf/bin

bailout() {
  echo ""
  echo "  You must have a kvm group to run this script. "
  echo "  Something like this should suffice for most systems: "
  echo "    # groupadd -g 221 kvm "
  echo ""
  exit 1
}

# Bail if group isn't valid on your system
# gid=221 is suggested to avoid conflicts with other SBo packages,
# but it's your call: http://slackbuilds.org/uid_gid.txt
if ! grep -q "^kvm:" /etc/group; then
  bailout
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
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 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --audio-drv-list="alsa oss" \
  --enable-mixemu \
  --arch=$ARCH \
  --kerneldir=/lib/modules/${KERNELVERSION}/build

make
make install DESTDIR=$PKG
cp -a kvm_stat $PKG/usr/bin/

mkdir -p $PKG/lib/udev/rules.d/
cat scripts/65-kvm.rules > $PKG/lib/udev/rules.d/65-kvm.rules

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

# Fix up the manpages
mv $PKG/usr/share/man $PKG/usr
( cd $PKG/usr/man
  find . -type f -exec gzip -9 {} \;
  for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
)
find $PKG/usr/man -type f -exec chmod 0644 {} \;

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a scripts $PKG/usr/doc/$PRGNAM-$VERSION/
mv $PKG/usr/share/doc/qemu/* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
rm -rf $PKG/usr/share/doc

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

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$PKG_VERS-$ARCH-$BUILD$TAG.tgz