#!/bin/sh

# Slackware build script for qemu

# Copyright 2009, 2010  Andrew Brouwers <abrouwers@gmail.com>
# Copyright 2013  Edward Koenig, Vancouver, USA <kingbeowulf@gmail.com>
# All rights reserved.
#
# 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.

# Changelog
# 1.0	27-FEB-2013	New SBo maintainer
# 1.0	07-MAR-2013	updated to 1.4, includes qemu-kvm; thanks to
#			rworkman and ponce for script ideas.
# 1.1	28-MAR-2013	fix missing docs per C. Willing and
#			add missing --libdir (patched in qemu-trivial upstream)
# 1.2   22-SEP-2013     updated to 1.6

PRGNAM=qemu
VERSION=${VERSION:-1.6.0}
BUILD=${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}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
  KVMARCH="i386"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
  KVMARCH="i386"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
  KVMARCH="x86_64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

# Enable only x86* and arm emulation for qemu: if you want to build
# all the targets available use TARGETS=all
if [ "${TARGETS:-}" = "all" ]; then
  targets=""
else
  targets="--target-list=i386-softmmu,x86_64-softmmu,i386-linux-user,x86_64-linux-user,arm-softmmu,arm-linux-user,armeb-linux-user"
fi

KVMGROUP=${KVMGROUP:-users}

# Needed to build man pages if built after plain "su"
export PATH=$PATH:/usr/share/texmf/bin

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 .
chmod -R u+w,go+r-w,a-s .

# Remove double CFLAGS
sed -i "s|^\ \ CFLAGS=\"-O2\ |  CFLAGS=\"|" configure || exit 1

# check if spice is there
if pkg-config --exists spice-server ; then
  with_spice="--enable-spice"
else
  with_spice="--disable-spice"
fi

# check if usbredir is there
if pkg-config --exists libusbredirhost ; then
  with_usbredir="--enable-usb-redir"
else
  with_usbredir="--disable-usb-redir"
fi

# --libdir is recognized but not advertised in --help
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --enable-gtk \
  --enable-system \
  --enable-kvm \
  --enable-mixemu \
  --disable-debug-info \
  --audio-drv-list=alsa,oss,sdl,esd \
  $targets \
  $with_spice \
  $with_usbredir

make V=1 OS_CFLAGS="$SLKCFLAGS"

make install DESTDIR=$PKG

# install some udev rules for /dev/kvm
mkdir -p $PKG/lib/udev/rules.d/
sed "s/@GROUP@/$KVMGROUP/" $CWD/65-kvm.rules \
  > $PKG/lib/udev/rules.d/65-kvm.rules

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

# create a symlink for qemu-kvm to support aqemu and such frontends
# even though qemu now has a gtk gui.
[ ! -z $KVMARCH ] && ln -s qemu-system-$KVMARCH $PKG/usr/bin/qemu-kvm

# move any generated man pages to their proper location
if [ -d $PKG/usr/share/man ]; then
  mv $PKG/usr/share/man $PKG/usr
  gzip -9 $PKG/usr/man/man?/*.?
fi

# Add docs to the proper location
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a Changelog COPYING* LICENSE MAINTAINERS README qemu-*.html docs/* \
  $PKG/usr/doc/$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

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