#!/bin/sh
# Copyright 2016  Patrick J. Volkerding, Sebeka, MN, USA
# Copyright 2016, 2017  Eric Hameleers, Eindhoven, NL
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS 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.
# -----------------------------------------------------------------------------


PKGNAM=elogind
VERSION=${VERSION:-219.14}
BUILD=${BUILD:-2}

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

# We do not use PAM by default:
USE_PAM=${USE_PAM:-"NO"}
[ "$USE_PAM" = "NO" -o "$USE_PAM" = "no" ] && DO_PAM="dis" || DO_PAM="en"

if [ -e $CWD/machine.conf ]; then
  . $CWD/machine.conf ]
elif [ -e /etc/slackbuild/machine.conf ]; then
  . /etc/slackbuild/machine.conf ]
else
  # Automatically determine the architecture we're building on:
  MARCH=$( uname -m )
  if [ -z "$ARCH" ]; then
    case "$MARCH" in
      i?86)    export ARCH=i486 ;;
      arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
      # Unless $ARCH is already set, use uname -m for all other archs:
      *)       export ARCH=$MARCH ;;
    esac
  fi
  # Set CFLAGS/CXXFLAGS and LIBDIRSUFFIX:
  if [ "$ARCH" = "i486" ]; then
    SLKCFLAGS="-O2 -march=i486 -mtune=i686"
    LIBDIRSUFFIX=""
  elif [ "$ARCH" = "s390" ]; then
    SLKCFLAGS="-O2"
    LIBDIRSUFFIX=""
  elif [ "$ARCH" = "x86_64" ]; then
    SLKCFLAGS="-O2 -fPIC"
    LIBDIRSUFFIX="64"
  elif [ "$ARCH" = "armv7hl" ]; then
    SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
    LIBDIRSUFFIX=""
  elif [ "$ARCH" = "arm" ]; then
    SLKCFLAGS="-O2 -march=armv5te"
    LIBDIRSUFFIX=""
  else
    SLKCFLAGS="-O2"
    LIBDIRSUFFIX=""
  fi
fi

case "$ARCH" in
    arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
    *)    TARGET=$ARCH-slackware-linux ;;
esac

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PKGNAM-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.gz || exit 1
cd $PKGNAM-$VERSION || exit 1

# Launch elogind when called via DBus and make sure its rundir exists
# (in Slackware, /run is mounted as a tmpfs):
sed -i src/login/org.freedesktop.login1.service \
    -e "s,/bin/false,/bin/bash -c \"[[ ! -d /run/systemd ]] \&\& mkdir /run/systemd;/usr/libexec/elogind/elogind\","

# Apply Gentoo patches:
#cat $CWD/patches/elogind-219.12-session.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/elogind-219.12-runtime.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/elogind-lrt.patch | patch -p1 --verbose || exit 1
cat $CWD/patches/elogind-docs.patch | patch -p1 --verbose || exit 1
# Merge a pull request for an upstream fix:
cat $CWD/patches/elogind-polkit.patch | patch -p1 --verbose || exit 1

# Make sure ownerships and permissions are sane:
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 {} \;

# Configure:
autoreconf -vif
intltoolize
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --libexecdir=/usr/libexec \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PKGNAM-$VERSION \
  --disable-seccomp \
  --disable-selinux \
  --disable-apparmor \
  --${DO_PAM}able-pam \
  --disable-smack \
  --disable-tests \
  --enable-split-usr \
  --build=$TARGET

# Build and install:
make || exit 1
make install DESTDIR=$PKG || exit 1

# Strip binaries:
find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | \
  grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

# Add a rc script; Slackware does not support this out of the box:
mkdir -p $PKG/etc/rc.d
install -m 0755 $CWD/rc.elogind $PKG/etc/rc.d/rc.elogind.new

# Add documentation:
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a \
  CODING_STYLE LICENSE* NEWS README TODO \
  $PKG/usr/doc/$PKGNAM-$VERSION

# Add a description and post-install script:
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

# Create the package:
cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz