#!/bin/sh

# Slackware build script for Blender

# Copyright 2015-2019 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.

SRCNAM=blender
PKGNAM=Blender
VERSION=${VERSION:-2.81}
BASE_VERSION=${BASE_VERSION:-$( echo $VERSION | sed -e 's/[^0-9.]*//g')}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PYTHON_VERSION=$(python3 -c "import sys; print(sys.version[:3])")

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=$TMP/package-$SRCNAM
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

cuda=""
if [ -d /usr/include/cuda ]; then
  # If cudatoolkit is installed, assume we want to use it
  cuda="-DWITH_CYCLES_CUDA_BINARIES=ON"
  # However disable cuda if requested by e.g. CUDA=no
  if [ ${CUDA:-yes} != "yes" ]; then
    cuda="-DWITH_CYCLES_CUDA_BINARIES=OFF"
  fi
fi

set -e

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

mkdir -p build
cd build
  cmake ../ \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DWITH_INSTALL_PORTABLE:BOOL=OFF \
    -DWITH_BUILDINFO:BOOL=ON \
    -DWITH_OPENCOLLADA:BOOL=ON \
    -DWITH_OPENCOLORIO:BOOL=ON \
    -DPYTHON_VERSION=$PYTHON_VERSION \
    -DWITH_PYTHON_INSTALL:BOOL=OFF \
    -DWITH_PYTHON_INSTALL_NUMPY:BOOL=ON \
    -DWITH_CODEC_FFMPEG:BOOL=ON \
    -DWITH_OPENAL:BOOL=ON \
    -DWITH_JACK:BOOL=ON \
    -DWITH_JACK_DYNLOAD:BOOL=ON \
    -DPYTHON_LIBPATH:PATH=/usr/lib${LIBDIRSUFFIX} \
    -DWITH_CODEC_SNDFILE:BOOL=ON \
    -DWITH_FFTW3:BOOL=ON \
    -DWITH_IMAGE_OPENJPEG:BOOL=ON \
    -DWITH_SYSTEM_LZO:BOOL=ON \
    -DWITH_MEM_JEMALLOC:BOOL=ON \
    -DWITH_MEM_VALGRIND:BOOL=ON \
    -DWITH_MOD_OCEANSIM:BOOL=ON \
    -DWITH_SDL:BOOL=ON \
    -DWITH_SDL_DYNLOAD:BOOL=ON \
    -DWITH_TBB:BOOL=OFF \
    -DCMAKE_BUILD_TYPE=Release \
    $cuda \

  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

BLENDERBINS="blender"
for bin in $BLENDERBINS ; do
  mv $PKG/usr/bin/$bin $PKG/usr/bin/$bin.bin
  cat <<EOF >$PKG/usr/bin/$bin
#!/bin/sh
#export PYTHONPATH=/usr/share/$SRCNAM/$BASE_VERSION/python/lib$LIBDIRSUFFIX/python$PYTHON_VERSION
export LD_LIBRARY_PATH=/usr/lib$LIBDIRSUFFIX/opencollada
exec $bin.bin "\$@"
EOF
  chmod 0755 $PKG/usr/bin/$bin
done

mkdir -p $PKG/usr/man/man1
./doc/manpage/blender.1.py build/bin/blender $PKG/usr/man/man1/blender.1
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 $PKG/usr/doc/$PKGNAM-$VERSION
mv $PKG/usr/share/doc/$SRCNAM/*  $PKG/usr/doc/$PKGNAM-$VERSION/
rm -rf $PKG/usr/share/doc
cat $CWD/$PKGNAM.SlackBuild > $PKG/usr/doc/$PKGNAM-$VERSION/$PKGNAM.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 $OUTPUT/$PKGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
