#!/bin/bash

# Slackware build script for Opensubdiv

# Copyright 2019 J. "MUFTI" Scheurich Stuttgart/Germany
# Copyright 2021-2026 Christoph Willing,  Sydney 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.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=OpenSubdiv
VERSION=${VERSION:-3.7.0}
SRCVER=$(echo $VERSION | tr . _)
BUILD=${BUILD:-2}
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

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
rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$SRCVER
tar xvf $CWD/$PRGNAM-$SRCVER.tar.gz
cd $PRGNAM-$SRCVER
sed -i -e 's/cudaThreadSynchronize/cudaDeviceSynchronize/' opensubdiv/osd/cudaEvaluator.cpp
sed -i -e '/${OPENGL_gl_LIBRARY}/a${OPENGL_glx_LIBRARY}' CMakeLists.txt

# Silence CL_TARGET_OPENCL_VERSION pragmas
sed -i -e '/opencl.h/i#define CL_TARGET_OPENCL_VERSION 300' opensubdiv/osd/opencl.h

chown -R root:root .
find . ! -type l    -a \( \
  \(     -perm /111 -a ! -perm 755 -a -exec chmod -f 755 {} + \) -o \
  \(   ! -perm /111 -a ! -perm 644 -a -exec chmod -f 644 {} + \) \)

cuda="-DNO_CUDA=ON";
[ "${ENABLE_CUDA:-no}" = "yes" ] && {
  # Find highest CUDA architecture supported by the installed cudatookit

  # First find location of nvcc
  source /etc/profile.d/cuda-*.sh

  support_cuda_architecture="$(nvcc --list-gpu-arch |tail -1)"
  sed --i -e "/compute_20/cset( OSD_CUDA_NVCC_FLAGS --gpu-architecture ${support_cuda_architecture} )" CMakeLists.txt
  echo "Highest gpu architecture supported will be ${support_cuda_architecture}"
}

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_LIBDIR_BASE=lib${LIBDIRSUFFIX} \
    -DCMAKE_DOCDIR_BASE=doc/$PRGNAM-$VERSION \
    -DCMAKE_SKIP_RPATH=ON \
    -DNO_CLEW=ON \
    -DNO_DX=ON \
    -DNO_EXAMPLES=ON \
    $cuda \
    -DCMAKE_BUILD_TYPE=Release ..

  make
  make install/strip DESTDIR=$PKG
cd ..

mkdir -p $PKG/usr/share/$PRGNAM
mv $PKG/usr/bin/tutorials $PKG/usr/share/$PRGNAM

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -rf documentation/* $PKG/usr/doc/$PRGNAM-$VERSION
find $PKG/usr/doc/$PRGNAM-$VERSION -type f -exec chmod 0644 {} +
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# 20220224 bkw: get rid of static libs.
# Keep static libs (needed elsewhere)
#rm -f $PKG/usr/lib*/*.a

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