#!/bin/bash

# Slackware build script for iscan

# Copyright 2019 Matteo Bernardini <ponce@slackbuilds.org>, Pisa, Italy
# 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.

# Shamelessly ripped from Alien Bob's script: thank him for all the hard work!

PRGNAM=iscan
VERSION=${VERSION:-2.30.4}
ADDVER=${ADDVER:-2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

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

# Minor library version of libpng on our system:
PNGMINOR=$(pkg-config --modversion libpng |cut -d'.' -f2)
if [ $PNGMINOR -gt 5 ]; then
  PNG_LDFLAGS="-lpng16"
elif [ $PNGMINOR -eq 4 ]; then
  PNG_LDFLAGS="-lpng14"
fi

DOCS="COPYING INSTALL NEWS README non-free/COPYING*.txt"

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/${PRGNAM}_${VERSION}-${ADDVER}.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# Apply ArchLinux patches:
# Allow linking against libpng15 and newer:
patch -p0 < $CWD/patches/iscan_png15.patch
# Patch for ambiguous div in jpegstream.cc:
patch -p0 < $CWD/patches/jpegstream.cc.patch
# Fix compilation error 'unknown type name u_char' on 32bit:
patch -p1 < $CWD/patches/iscan-2.30.3_x86-unknown-types.patch
# Add fix for CXX ABI different than 1002:
ln -s libesmod-x86_64.c2.so non-free/libesmod-x86_64.so

LDFLAGS="-ldl $PNG_LDFLAGS" \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --enable-dependency-reduction \
  --enable-frontend \
  --enable-jpeg \
  --enable-tiff \
  --enable-png \
  --enable-gimp \
  --build=$ARCH-slackware-linux

make
make install DESTDIR=$PKG

# Install the SANE backend configuration:
mkdir -p $PKG/etc/sane.d/dll.d
install -m0644 backend/epkowa.conf $PKG/etc/sane.d/epkowa.conf.new
echo "epkowa" > $PKG/etc/sane.d/dll.d/epkowa.conf

# Create the forgotten desktop menu:
mkdir -p $PKG/usr/share/applications
install -m0644 $PRGNAM.desktop $PKG/usr/share/applications/$PRGNAM.desktop

# Make the GIMP aware of the iscan plugin:
mkdir -p $PKG/usr/lib$LIBDIRSUFFIX/gimp/2.0/plug-ins
ln -s /usr/bin/$PRGNAM $PKG/usr/lib$LIBDIRSUFFIX/gimp/2.0/plug-ins/

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

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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}