#!/bin/sh

# Heavily based on the Slackware 14.0 SlackBuild

# Copyright (c) 2013, Luca De Pandis. All rights reserved.
# Contact me: lucadepandis@gmail.com

# Slackware build script for Zettabyte File System
# Official Site: http://zfsonlinux.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.
#
# Files: rc.zfs.gz

set -e

PKGNAME=zfs
VERSION=${VERSION:-0.6.1}
KERNVER=$(uname -r)
ARCH=x86_64  # Using it on a 32-bits architecture is strongly unrecommended.
BUILD=${BUILD:-2}
TAG=${TAG:-sl}
PKGTYPE=${PKGTYPE:-txz}
SOURCE="http://archive.zfsonlinux.org/downloads/zfsonlinux/$PKGNAME/$PKGNAME-$VERSION.tar.gz"

JOBS=${JOBS:--j4}

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

if [ ! -e $PKGNAME-$VERSION.tar.gz ]; then
    wget $SOURCE
fi

# Since 32-bits is not recommended, this SlackBuild will use only a 64-bits configuration
# for SLKCFLAGS and LIBDIRSUFFIX variables and there will be no more difference between
# CHOST and ARCH.
SLKCFLAGS="-O2 -fPIC"
LIBDIRSUFFIX="64"

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

cd $TMP
tar xzvf $CWD/$PKGNAME-$VERSION.tar.gz
cd $PKGNAME-$VERSION
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

# ZFS should not be installed on /usr, but in / to avoid any issues with a separate /usr
# partition
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
    --prefix=/usr \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --libdir=/lib${LIBDIRSUFFIX} \
    --sbindir=/sbin \
    --bindir=/bin \
    --mandir=/usr/man \
    --docdir=/usr/doc/$PKGNAME-$VERSION \
    --enable-shared \
    --disable-static \
    --with-udevdir=/lib/udev \
    --with-dracutdir=/usr/lib/dracut \
    --without-blkid \
    --build=$ARCH-slackware-linux
make $JOBS
make install DESTDIR=$PKG

# Fixing INIT service's path, and replace the standard LSB SysV zfs
# service with a Slackware-compliant one.
mv $PKG/etc/init.d $PKG/etc/rc.d
rm $PKG/etc/rc.d/$PKGNAME
zcat $CWD/rc.$PKGNAME.gz > $PKG/etc/rc.d/rc.$PKGNAME
chmod 755 $PKG/etc/rc.d/rc.$PKGNAME

mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild
cp -a \
    AUTHORS DISCLAIMER META README* OPENSOLARIS* \
    $PKG/usr/doc/$PKGNAME-$VERSION
cat $CWD/$PKGNAME.SlackBuild > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/$PKGNAME.SlackBuild
cat $CWD/slack-desc > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/slack-desc

if [ -d $PKG/usr/man ]; then
    ( 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
    )
fi

( cd $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
)

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

cd $PKG
chown -R root:root .

if [ -x "$(which requiredbuilder 2>/dev/null)" ]; then
    ADD=$(ls /var/log/packages/ | sed -ne 's/\(spl\)-\([^-]\+-[^-]\+-[^-]\+\)/\1 >= \2/p') \
    requiredbuilder -y -v -s $CWD $PKG
    cat $CWD/slack-required > $PKG/usr/doc/$PKGNAME-$VERSION/SlackBuild/slack-required
fi

/sbin/makepkg -l y -c n $OUTPUT/$PKGNAME-${VERSION}_${KERNVER}-$ARCH-$BUILD$TAG.$PKGTYPE

if [ "$1" == "--cleanup" ]; then
    rm -rf $TMP
fi