#!/bin/sh

# Heavily based on the Slackware 13.1 SlackBuild
# Written by Tommaso D'Anna aka tasodan ( www.slacky.eu )
# Last build from Tommaso D'Anna aka tasodan ( www.slacky.eu )

# Slackware build script for LXDM
# Official Site: http://lxde.org

# 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.

set -e

# Catching variables
PKGNAME=${PKGNAME:-lxdm}
VERSION=${VERSION:-0.2.0}
BUILD=${BUILD:-1}
TAG=${TAG:-sl}
ARCH=${ARCH:-i486}
SOURCE="http://downloads.sourceforge.net/lxde/$PKGNAME-$VERSION.tar.gz"

CWD=${CWD:-`pwd`}
TMP=${TMP:-/tmp/buildpkgs/$PKGNAME}
PKG=${PKG:-$TMP/package-$PKGNAME}
OUTPUT=${OUTPUT:-$CWD}

CHOST="i486"
if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
  CHOST="x86_64"
fi

# Source file avaiability
if [ ! -e $CWD/$PKGNAME-$VERSION.tar.gz ] ; then
  wget $SOURCE
fi

# Create working directories:
rm -rf $TMP
mkdir -p $TMP $PKG $OUTPUT

# Package building
cd $TMP
tar xvf $CWD/$PKGNAME-$VERSION.tar.gz
cd $PKGNAME-$VERSION

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

# Patch the Xsession file to source /etc/profile and xprofile on session start
patch -p1 < $CWD/source_profile_in_Xsession.diff

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PKGNAME-$VERSION \
  --without-pam \
  --build=$CHOST-slackware-linux
make
make install DESTDIR=$PKG

# We said --without-pam
rm -rf $PKG/etc/pam.d

# Install a to-be-customized-if-needed /etc/lxdm/xinitrc
cat << EOF > $PKG/etc/lxdm/xinitrc.new
#!/bin/sh
# This file is referenced from /etc/lxdm/Xsession
# This is for system-specific customization if desired

EOF

# Don't clobber configs on upgrade
# But *do* clobber Xsession
for file in LoginReady PostLogin PostLogout PreLogin PreReboot PreShutdown lxdm.conf ;
  do mv $PKG/etc/lxdm/$file $PKG/etc/lxdm/$file.new ;
done

# Adding documentation
mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION
cp -a \
  AUTHORS COPYING ChangeLog INSTALL NEWS README TODO \
  $PKG/usr/doc/$PKGNAME-$VERSION
cat $CWD/$PKGNAME.SlackBuild > $PKG/usr/doc/$PKGNAME-$VERSION/$PKGNAME.SlackBuild
cat $CWD/slack-desc > $PKG/usr/doc/$PKGNAME-$VERSION/slack-desc
cat $CWD/README.Slackware > $PKG/usr/doc/$PKGNAME-$VERSION/README.Slackware

# Stripping binaries
cd $PKG
chown -R root:root $PKG

find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true

# Adding slack-desc, doinst.sh and slack-required
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

if [ -x "$(which requiredbuilder 2>/dev/null)" ];then
  requiredbuilder -y -v -s $CWD $PKG
fi

# Make the package
/sbin/makepkg -l y -c n $OUTPUT/$PKGNAME-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-txz}

# Clean up the extra stuff
if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP $PKG
fi