#!/bin/bash

# Slackware build script for dc3dd

# Copyright 2008 Barry J. Grundy <http://www.linuxleo.com>
# Copyright 2010, 2018 Patrick J. Volkerding, Sebeka, MN, 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=dc3dd		
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-4}

# 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-$PKGNAM
OUTPUT=${OUTPUT:-/tmp}
 
if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

rm -rf $PKG 
mkdir -p $TMP $PKG $OUTPUT
rm -rf $TMP/$PKGNAM-$VERSION
cd $TMP 
tar xvf $CWD/$PKGNAM-$VERSION.tar.?z* || exit 1
cd $PKGNAM-$VERSION 
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 {} \+

zcat $CWD/dc3dd.glibc228.diff.gz | patch -p1 --verbose || exit 1

chmod +x ./configure

CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --build=$ARCH-slackware-linux || exit 1

make -j3 || exit 1
make install DESTDIR=$PKG || exit 1

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

( cd $PKG/usr/man || exit 1
  find . -type f -exec gzip -9 {} \+
  for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
)

mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a \
  AUTHORS COPYING* ChangeLog INSTALL NEWS* Options_Reference.txt \
  README* Sample_Commands.txt THANKS THANKS-to-translators TODO \
    $PKG/usr/doc/$PKGNAM-$VERSION
find $PKG/usr/doc/$PKGNAM-$VERSION -type f -exec chmod 644 {} \+

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

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PKGNAM-$VERSION-$ARCH-$BUILD.txz