#!/bin/bash

# Copyright 2005-2009, 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.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=bzip2
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
SOLIB=${VERSION}
BUILD=${BUILD:-3}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-bzip2

if [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
else
  LIBDIRSUFFIX=""
fi

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

cd $TMP
rm -rf bzip2-$VERSION
tar xvf $CWD/bzip2-$VERSION.tar.?z || exit 1
cd bzip2-$VERSION || exit 1
chown -R root:root .
# This should be ok, since libbz2.so.1.0 will still exist.
zcat $CWD/bzip2.saneso.diff.gz | patch -p1 || exit
make -f Makefile-libbz2_so || exit 1
make -j3 || make || exit 1
mkdir -p $PKG/usr/include
cp -a bzlib.h $PKG/usr/include
chown root:root $PKG/usr/include/bzlib.h
chmod 644 $PKG/usr/include/bzlib.h
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}
#cp -a libbz2.a $PKG/usr/lib${LIBDIRSUFFIX}/libbz2.a
#chmod 644 $PKG/usr/lib${LIBDIRSUFFIX}/libbz2.a
mkdir -p $PKG/lib${LIBDIRSUFFIX}
cp -a libbz2.so.$SOLIB $PKG/lib${LIBDIRSUFFIX}/libbz2.so.$SOLIB
chmod 755 $PKG/lib${LIBDIRSUFFIX}/libbz2.so.$SOLIB
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig
cat $CWD/bzip2.pc | sed "s|libdir=|libdir=/usr/lib${LIBDIRSUFFIX}|g" > $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/bzip2.pc
mkdir -p $PKG/bin
cat bzip2-shared > $PKG/bin/bzip2
cat bzip2recover > $PKG/bin/bzip2recover
mkdir -p $PKG/usr/man/man1
cat bzip2.1 | gzip -9c > $PKG/usr/man/man1/bzip2.1.gz
echo '.so man1/bzip2.1' | gzip -9c > $PKG/usr/man/man1/bzip2recover.1.gz
mkdir -p $PKG/usr/doc/bzip2-$VERSION
cp -a CHANGES LICENSE README* \
  bzip2.txt *.html $PKG/usr/doc/bzip2-$VERSION
chmod 644 $PKG/usr/doc/bzip2-$VERSION/*
# Link up them links
( cd $PKG
  ( cd lib${LIBDIRSUFFIX}
    rm -f libbz2.so.1.0 libbz2.so.1
    ln -sf libbz2.so.$SOLIB libbz2.so.1.0
    ln -sf libbz2.so.1.0 libbz2.so.1
  )
  ( cd usr/lib${LIBDIRSUFFIX}
    ln -sf ../../lib${LIBDIRSUFFIX}/libbz2.so.1 libbz2.so
  )
  ( cd bin ; ln -sf bzip2 bunzip2 )
  ( cd bin ; ln -sf bzip2 bzcat )
  mkdir -p usr/bin
  ( cd usr/bin
    ln -sf ../../bin/bzip2 .
    ln -sf ../../bin/bzip2 bunzip2
    ln -sf ../../bin/bzip2 bzcat
    ln -sf bzmore bzless
  )
)
# Here are some optional scripts:
for file in bzdiff bzgrep bzmore ; do
  cat $file > $PKG/usr/bin/$file
  cat ${file}.1 | gzip -9c > $PKG/usr/man/man1/${file}.1.gz
done
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)
chmod 755 $PKG/bin/* $PKG/usr/bin/*
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

# Build the package:
cd $PKG
makepkg -l y -c n $TMP/bzip2-$VERSION-$ARCH-$BUILD.txz