#!/bin/sh

# Copyright 2008, 2009, 2010  Patrick J. Volkerding, Sebeka, Minnesota, USA
# 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.


VERSION=${VERSION:-$(echo xscreensaver-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i486 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

NUMJOBS=${NUMJOBS:-" -j7 "}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

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

rm -rf $PKG
mkdir -p $TMP $PKG

cd $TMP
rm -rf xscreensaver-$VERSION
tar xvf $CWD/xscreensaver-$VERSION.tar.?z* || exit 1
cd xscreensaver-$VERSION

# Allow xscreensaver to work setgid shadow.  I'd rather avoid requiring
# setuid root on this if at all possible...
zcat $CWD/xscreensaver.setuid.diff.gz | patch -p1 --verbose --backup --suffix=.orig || exit 1

# Add support for the electricsheep distributed screensaver:
zcat $CWD/xscreensaver.electricsheep.diff.gz | patch -p1 --verbose --backup --suffix=.orig || exit 1

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 {} \;

xml_config=/usr/bin/xml-config xml2_config=/usr/bin/xml2-config \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --with-x-app-defaults=/etc/X11/app-defaults \
  --with-shadow \
  --with-jpeg \
  --with-gl \
  --build=$ARCH-slackware-linux

# We use '-i' because xscreensaver's NLS support has always been horribly broken
make -i $NUMJOBS || make -i
make -i install_prefix=$PKG install-strip

gzip -9 $PKG/usr/man/man?/*

chown root:shadow $PKG/usr/bin/xscreensaver
chmod 2751 $PKG/usr/bin/xscreensaver

# This is needed for the menus:
mkdir -p $PKG/usr/share/pixmaps
mkdir -p $PKG/etc
mkdir -p $PKG/usr/doc/xscreensaver-$VERSION
cp -a \
  README* \
  $PKG/usr/doc/xscreensaver-$VERSION

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/xscreensaver-$VERSION-$ARCH-$BUILD.txz