#!/bin/sh

# Heavily based on the Slackware 13.37 SlackBuild (v1)

# Written by Michelino Chionchio
# Last build from Luca De Pandis aka atomix600 (atomix600(at)hotmail(dot)it)

# Slackware build script for Alien
# Official Site: http://kitenet.net/~joey/code/alien

# 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

PKGNAME=${PKGNAME:-alien}
VERSION=${VERSION:-8.85}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-sl}
PKGTYPE=${PKGTYPE:-txz}
SOURCE=${SOURCE:-http://ftp.de.debian.org/debian/pool/main/a/$PKGNAME/${PKGNAME}_$VERSION.tar.gz}

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

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

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

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

cd $TMP
tar xvzf $CWD/${PKGNAME}_${VERSION}.tar.gz
cd $PKGNAME
chmod -R u+w,go+r-w,a-s .
chown -R root:root .
perl Makefile.PL
CCFLAGS="SLKCFLAGS" \
make
make install

PERLVER=$(ls /var/log/packages/perl* | cut -c19- | cut -f2 -d '-' | cut -f1 -d '.')
PERLSUBVER=$(ls /var/log/packages/perl* | cut -c19- | cut -f2 -d '-')

mkdir -p $PKG/usr/bin
mv /usr/bin/alien $PKG/usr/bin/

mkdir -p $PKG/usr/lib/perl$PERLVER/site_perl/$PERLSUBVER/
mv /usr/lib/perl$PERLVER/site_perl/$PERLSUBVER/Alien/ $PKG/usr/lib/perl$PERLVER/site_perl/$PERLSUBVER

mkdir -p $PKG/usr/man/{man1,man3}/
mv /usr/man/man1/alien* $PKG/usr/man/man1/
mv /usr/man/man3/Alien* $PKG/usr/man/man3/
gzip -9 $PKG/usr/man/{man1,man3}/*

mkdir -p $PKG/usr/lib/perl$PERLVER/site_perl/$PERLSUBVER/i486-linux-thread-multi/auto/Alien
cat << EOF > $PKG/usr/lib/perl$PERLVER/site_perl/$PERLSUBVER/i486-linux-thread-multi/auto/Alien/.packlist
/usr/bin/alien
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package.pm
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package/Deb.pm
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package/Lsb.pm
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package/Pkg.pm
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package/Rpm.pm
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package/Slp.pm
/usr/lib/perl5/site_perl/$PERLVER/Alien/Package/Tgz.pm
/usr/man/man1/alien.1.gz
/usr/man/man3/Alien::Package.3.gz
/usr/man/man3/Alien::Package::Deb.3.gz
/usr/man/man3/Alien::Package::Lsb.3.gz
/usr/man/man3/Alien::Package::Pkg.3.gz
/usr/man/man3/Alien::Package::Rpm.3.gz
/usr/man/man3/Alien::Package::Slp.3.gz
/usr/man/man3/Alien::Package::Tgz.3.gz
EOF
rm -rf /usr/lib/perl5/site_perl/$PERLVER/i486-linux-thread-multi/auto/Alien/

mkdir -p $PKG/usr/share
mv /usr/share/$PKGNAME/ $PKG/usr/share/

mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION
cp -a \
    GPL INSTALL 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

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

cd $PKG
chown -R root:root $PKG

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

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

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