#!/bin/bash
# Build script for Slackware
# Copyright (C) 2010,2013,2018 Damien Goutte-Gattat
#
# Redistribution and use of this script, with or without modifications,
# 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.
#
# Contact: Damien Goutte-Gattat <dgouttegattat@incenp.org>
#
# Latest vtk sourcecode is available at: <https://www.vtk.org/>.
#
# Depends: l/PyQt5

# Source package infos
NAMESRC=${NAMESRC:-VTK}
VERSION=${VERSION:-6.3.0}
ARCHIVE=${ARCHIVE:-$NAMESRC-$VERSION.tar.gz}
WGET=${WGET:-https://www.vtk.org/files/release/6.3/$ARCHIVE}

# Build infos
NAMEPKG=${NAMEPKG:-vtk}
BUILD=${BUILD:-2GGD}
ARCH=${ARCH:-$(uname -m | sed 's/^i.86$/i486/;s/^arm.*/arm/')}
JOBS=${JOBS:-1}
EXT=${EXT:-txz}

# Directories
TMP=${TMP:-/tmp}
OUT=${OUT:-$TMP/build}
PKG=${PKG:-$OUT/$NAMEPKG}
CWD=$(pwd)

set -e  # Quit if a command returns non-zero

# Sanity checks
if [ $UID -eq 0 ]; then
    echo "You should NOT run this script as ROOT!"
    exit 1
fi
if [ ! -d $TMP ]; then
    echo "$TMP does not exist or is not a directory!"
    exit 1
fi

# Compilation flags
LIBDIR=""
case "$ARCH" in
i?86)
    CPUOPT="-O2 -march=$ARCH -mtune=i686"
    ;;
x86_64)
    CPUOPT="-O2 -fPIC"
    LIBDIRSUFFIX=64
    ;;
*)
    CPUOPT="-O2"
    ;;
esac

# Get and verify the source archive
if [ ! -r $ARCHIVE ]; then
    wget -c -O $ARCHIVE.part "$WGET"
    mv $ARCHIVE.part $ARCHIVE
fi
sha256sum -c $ARCHIVE.sha256
NAME=$(tar ft $ARCHIVE | head -n 1 | cut -d / -f 1)

# Compile
cd $TMP
echo "Building $ARCHIVE..."
tar xf $CWD/$ARCHIVE
cd $NAME
mkdir build
cd build
cmake \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_INSTALL_PREFIX=/usr \
  -DBUILD_SHARED_LIBS=ON \
  -DVTK_QT_VERSION=5 \
  -DVTK_QT_QMAKE_EXECUTABLE=/usr/bin/qmake-qt5 \
  -DVTK_INSTALL_LIBRARY_DIR=lib$LIBDIRSUFFIX \
  -DVTK_INSTALL_ARCHIVE_DIR=lib$LIBDIRSUFFIX \
  -DVTK_INSTALL_DOC_DIR=doc/$NAMEPKG-$VERSION \
  -DVTK_INSTALL_PACKAGE_DIR=lib$LIBDIRSUFFIX/cmake/vtk-6.3 \
  -DVTK_INSTALL_PYTHON_MODULE_DIR=lib$LIBDIRSUFFIX/python2.7/site-packages \
  -DVTK_INSTALL_QT_PLUGIN_DIR=lib$LIBDIRSUFFIX/qt5/plugins/designer \
  -DVTK_WRAP_PYTHON=ON \
  -DVTK_Group_Imaging=ON \
  -DVTK_Group_Qt=ON \
  -DVTK_Group_Rendering=ON \
  -DVTK_Group_StandAlone=ON \
  -DVTK_Group_Views=ON \
  -DCMAKE_CXX_FLAGS="$CPUOPT" \
  ..
make
make install/strip DESTDIR=$PKG

# Fix bogus installation of Qt Designer plugin (WTF?)
mv $PKG$TMP/$NAME/build/lib$LIBDIRSUFFIX/qt5 $PKG/usr/lib$LIBDIRSUFFIX/qt5
rm -rf $PKG$TMP

# Install the documentation
install -m 644 ../CONTRIBUTING.md ../README.md $PKG/usr/doc/$NAMEPKG-$VERSION

# Copy slack-desc file
install -D -m 644 $CWD/slack-desc $PKG/install/slack-desc

# Add dependency infos
cat <<EOF > $PKG/install/slack-required
PyQt5
EOF

# Package the tree
cd $PKG
mkdir -p $OUT
PACKAGING="
chown root:root . -R
/sbin/makepkg -l y -c n $OUT/$NAMEPKG-$VERSION-$ARCH-$BUILD.$EXT
rm -rf $PKG
rm -rf $TMP/$NAME
"
if type -p fakeroot ; then
    echo "$PACKAGING" | fakeroot
else
    su -c "$PACKAGING"
fi