#!/bin/bash

# Slackware build script for saga-gis

# Copyright 2023-2024 Giancarlo Dessi, Cagliari, IT
# Copyright 2014-2021 Benjamin Trigona-Harany <slackbuilds@jaxartes.net>
# 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)

PRGNAM=saga-gis
VERSION=${VERSION:-9.4.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

SRCNAM=saga

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

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# issues with -O2 causing build failures
if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-fPIC"
else
  SLKCFLAGS=""
fi

set -e

# unixODBC is needed in 32 bit systems instead of libiodbc released
# with Slackware 15.0. The slackbuild stops if unixODBC is not installed
if [[ "$ARCH" = "i586" || "$ARCH" = "i686" ]] ; then
  if ! [ -f /usr/lib/libodbc.so ] ; then
    echo "";
    echo "";
    echo "";
    echo "******************** WARNING *********************";
    echo " This script cannot be executed in 32 bit systems ";
    echo " with iODBC as default ODBC library installed.    ";
    echo " The current process will be stopped.             ";
    echo " Please install the unixODBC package from the     ";
    echo " slackbuild available in the SBo repository.      ";
    echo "**************************************************";
    exit 1;
  fi
fi

# if both unixODBCand and libiodbc are installed, SAGA set the
# first as default driver ODBC. This flag should prevent possible
# compilation failures since cmake does not find the correct
# path of unixODBC headers
ODBC=""
if pkg-config --exists odbc; then
  ODBC="-DODBC_INCLUDE_DIR=/usr/include/unixodbc "
fi

# Look if the system has PDAL installed
if pkg-config --exists pdal; then
  WITHPDAL=""
else
  WITHPDAL="-DWITH_TOOLS_PDAL=OFF "
fi

if [ -d /usr/share/cmake-3.29 ]; then
   # This prevents some cmake warnings in current
   CMAKE_POLICY="-DCMAKE_POLICY_DEFAULT_CMP0153=OLD "
else
   CMAKE_POLICY=""
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
cd $SRCNAM-$VERSION/saga-gis

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 {} \;

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_INSTALL_MANDIR=/usr/man \
    $ODBC \
    $WITHPDAL \
    $CMAKE_POLICY \
    -DCMAKE_BUILD_TYPE=Release ..
  make
  make install/strip DESTDIR=$PKG
cd ..

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

# DCMAKE_INSTALL_MANDIR is not applied by the process we move files manually from /usr/share
mv $PKG/usr/share/man $PKG/usr/
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

mv $PKG/usr/share/metainfo $PKG/usr/share/appdata

# fix some bad perms in doc files that have to install
chmod 644 readme.md src/*.txt

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a readme.md src/gpl.txt src/lgpl.txt  $PKG/usr/doc/$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