#!/bin/sh

# Slackware build script for VTK

# Copyright 2013,2014 Youjie Zhou <jmpopush@gmail.com>
# All rights reserved.
# Copyright 2016-2020 Christoph Willing,  Brisbane Australia
# 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.
#

PRGNAM=VTK
VERSION=${VERSION:-8.2.0}
SHORT_VERSION=${SHORT_VERSION:-$(echo $VERSION | sed -e 's/\.[0-9]*//2g')}
BUILD=${BUILD:-2}
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

# configure VTK features
# (defaults suitable for OpenCASCADE, it's the only SBo package that depends on VTK)
group_imaging="" ; [ "${IMAGING:-yes}" != "no" ] && group_imaging="-DVTK_Group_Imaging=true"
group_mpi=""     ; [ "${MPI:-no}" != "no" ]      && group_mpi="-DVTK_Group_MPI=true"
group_qt=""      ; [ "${QT:-yes}" != "no" ]      && group_qt="-DVTK_Group_Qt=true"
group_tk=""      ; [ "${TK:-yes}" != "no" ]      && group_tk="-DVTK_Group_Tk=true"
group_views=""   ; [ "${VIEWS:-no}" != "no" ]    && group_views="-DVTK_Group_Views=true"
group_web=""     ; [ "${WEB:-no}" != "no" ]      && group_web="-DVTK_Group_Web=true"
wrap_python=""   ; [ "${PYTHON:-yes}" != "no" ]  && wrap_python="-DVTK_WRAP_PYTHON=true"
wrap_java=""     ; [ "${JAVA:-no}" != "no" ]     && wrap_java="-DVTK_WRAP_JAVA=true"

if pkg-config --exists jsoncpp ; then jsoncpp="-DVTK_USE_SYSTEM_JSONCPP:BOOL=ON" ; else jsoncpp="" ; fi

# TODO: netcdf, hdf5, gl2ps
#if test -e /usr/include/hdf5.h ; then hdf5="-DVTK_USE_SYSTEM_HDF5:BOOL=ON" ; else hdf5="" ; fi
hdf5=""
netcdf=""

# gl2ps 1.4.0 is needed (+ VTK-specific changes)
#if test -e /usr/include/gl2ps.h ; then gl2ps="-DVTK_USE_SYSTEM_GL2PS:BOOL=ON" ; else gl2ps="" ; fi
gl2ps=""


set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.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 {} \;

sed -i '/include <QTextStream>/a #include <QPainterPath>' \
  Rendering/Qt/vtkQtLabelRenderStrategy.cxx \
  Rendering/Qt/vtkQtStringToImage.cxx

if pkg-config --exists proj ; then
  proj="-DVTK_USE_SYSTEM_LIBPROJ:BOOL=ON"
  # proj6 patch courtesy of
  # https://git.archlinux.org/svntogit/community.git/plain/trunk/proj6.patch?h=packages/vtk
  patch -p1 < $CWD/patch-proj6.diff
else
  proj=""
fi

# https://github.com/archlinux/svntogit-community/blob/packages/vtk/trunk/PKGBUILD
( cd ThirdParty/exodusII/vtkexodusII
  patch -p1 < $CWD/patch-gcc10.diff )
sed -i 's|REGEX MATCH \"\[3-9\]|REGEX MATCH \"[1-9][0-9]|' CMake/VTKGenerateExportHeader.cmake

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_INSTALL_LIBDIR=lib${LIBDIRSUFFIX} \
    -DBUILD_SHARED_LIBS=ON \
    -DVTK_CUSTOM_LIBRARY_SUFFIX="" \
    -DVTK_INSTALL_INCLUDE_DIR:PATH=include/VTK \
    $group_imaging \
    $group_mpi \
    $group_qt \
    $group_tk \
    $group_views \
    $group_web \
    $wrap_python \
    $wrap_java \
    -DVTK_USE_SYSTEM_EXPAT:BOOL=ON \
    -DVTK_USE_SYSTEM_FREETYPE:BOOL=ON \
    -DVTK_USE_SYSTEM_GLEW:BOOL=ON \
    -DVTK_USE_SYSTEM_JPEG:BOOL=ON \
    -DVTK_USE_SYSTEM_LIBXML2:BOOL=ON \
    -DVTK_USE_SYSTEM_OGG:BOOL=ON \
    -DVTK_USE_SYSTEM_THEORA:BOOL=ON \
    -DVTK_USE_SYSTEM_PNG:BOOL=ON \
    -DVTK_USE_SYSTEM_TIFF:BOOL=ON \
    -DVTK_USE_SYSTEM_ZLIB:BOOL=ON \
    $jsoncpp \
    $proj \
    $gl2ps \
    $hdf5 \
    $netcdf \
    -DCMAKE_BUILD_TYPE=Release ..

  make
  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

[ -d $PKG/usr/plugins ] && {
  mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/qt
  mv \
    $PKG/usr/plugins/ \
    $PKG/usr/lib${LIBDIRSUFFIX}/qt
}

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  CONTRIBUTING.md Copyright.txt README.md \
  $PKG/usr/doc/$PRGNAM-$VERSION
mv \
  $PKG/usr/share/doc/vtk-$SHORT_VERSION/verdict/ \
  $PKG/usr/doc/$PRGNAM-$VERSION
rm -rf $PKG/usr/share/doc
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

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