#!/bin/bash

# SlackBuild script for OTB-legacy

# Copyright 2023-2024 Giancarlo Dessi, Cagliari, IT
# Copyright 2014-2021 Benjamin Trigona-Harany <slackbuilds@jaxartes.net>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "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 COPYRIGHT
# OWNER OR CONTRIBUTORS 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=OTB-legacy
SRCNAM=OTB
VERSION=${VERSION:-8.1.2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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

#Look for other installed versions of Orfeo ToolBox version 8
#Versions earlier than OTB 8 are not detected
if [ -d /usr/doc/OTB-8* ]; then
  echo "*****************************************************************"
  echo "WARNING: another installation of OTB is found in your system!"
  echo "If you are trying to update or rebuild your OTB with this script"
  echo "you must remove previous OTB package installed because OTB-legacy"
  echo "will conflict with the current installed:"
  echo "# removepkg OTB"
  echo "This script will be stopped"
  echo "*****************************************************************"
  exit 1
fi 
#Look for other installed versions of Orfeo ToolBox later than 8.1.2
if [ -d /usr/doc/OTB-9* ]; then
  echo "*****************************************************************"
  echo "WARNING: a later version of OTB is found in your system!"
  echo "If you are trying to downgrade your OTB with this script"
  echo "you must remove previous OTB package installed because OTB-legacy"
  echo "will conflict with the current installed:"
  echo "# removepkg OTB"
  echo "This script will be stopped"
  echo "*****************************************************************"
  exit 1
fi 

if [ -d /usr/share/cmake-3.28 ]; then
   # This prevents some cmake warnings in current 
   CMAKE_POLICY="-DCMAKE_POLICY_DEFAULT_CMP0106=OLD "
else
   CMAKE_POLICY=""
fi

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

set -e

# Search for optional dependencies
if pkg-config --exists ompi; then
  BUILD_MPI="" ; [ "${MPI:-ON}" = "ON" ] && BUILD_MPI="-DOTB_USE_MPI=ON "
else
  BUILD_MPI=""
fi

if pkg-config --exists glfw3; then
  WITH_GLFW="" ; [ "${GLFW:-ON}" = "ON" ] && WITH_GLFW="-DOTB_USE_GLFW=ON "
else
  WITH_GLFW=""
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
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 {} \;

patch -p1 < $CWD/otbSpatialReference.cxx.patch

sed -i CMakeLists.txt -e "s/message(WARNING/message(STATUS/g"

sed -i "s/lib\b/lib${LIBDIRSUFFIX}/" \
  CMakeLists.txt \
  CMake/OTBModuleExternal.cmake \
  CMake/OTBStandaloneModuleMacros.cmake \
  CMake/OTBApplicationMacros.cmake

mkdir -p build
cd build
  cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_C_FLAGS="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DBUILD_EXAMPLES=OFF \
    -DBUILD_TESTING=OFF \
    -DOTB_USE_CURL=ON \
    -DOTB_USE_QWT=ON \
    -DOTB_USE_GLEW=ON \
    -DOTB_USE_OPENGL=ON \
    -DOTB_USE_QT=ON \
    -DOTB_USE_GLUT=ON \
    -DOTB_USE_GSL=ON \
    -DOTB_USE_LIBKML=ON \
    -DOTB_USE_MUPARSER=ON \
    -DOTB_USE_OPENCV=ON \
    -DOTB_USE_OPENMP=ON \
    -DOTB_USE_SHARK=ON \
    -DOTB_INSTALL_PYTHON_DIR=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
    -DOTB_WRAP_PYTHON=ON \
    -DOTB_INSTALL_DOC_DIR=doc/$PRGNAM-$VERSION \
    -DGDAL_CONFIG_CHECKING=ON \
    $BUILD_MPI \
    $WITH_GLFW \
    $CMAKE_POLICY \
    ..
  make -j 10
  make install DESTDIR=$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

mkdir -p $PKG/etc/profile.d
cat > $PKG/etc/profile.d/otb.csh << EOF
#!/bin/csh
# Orfeo ToolBox applications path
setenv OTB_APPLICATION_PATH /usr/lib${LIBDIRSUFFIX}/otb/applications
EOF
cat > $PKG/etc/profile.d/otb.sh << EOF
#!/bin/sh
# Orfeo ToolBox applications path
export OTB_APPLICATION_PATH=/usr/lib${LIBDIRSUFFIX}/otb/applications
EOF

chmod 0755 $PKG/etc/profile.d/otb.csh
chmod 0755 $PKG/etc/profile.d/otb.sh

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  README.md RELEASE_NOTES.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