#!/bin/bash

# Slackware build script for OpenCASCADE

# Copyright 2010-2012 Niels Horn, Rio de Janeiro, RJ, Brazil
# All rights reserved.
# Maintained 2013-2025 by David Spencer <baildon.research@googlemail.com>
# Copyright 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.
#
# NOTE sbopkglint finds 3 non-execuatble bash scripts in /usr/bin
# but I can't tell if they are needed there or not, so leaving them for now
# - Dave W.

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

PRGNAM=OpenCASCADE
VERSION=${VERSION:-7.9.3}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

SRCNAM=OCCT
SRCVERSION=$(echo $VERSION | tr . _)

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

# OpenCASCADE doesn't yet built with ffmpeg-7.*
use_ffmpeg="-DUSE_FFMPEG=ON "
if [[ "$(ffmpeg -version | sed -n "s/ffmpeg version \([-0-9.]*\).*/\1/p;")" == "7"* ]]; then use_ffmpeg="-DUSE_FFMPEG=OFF "; fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$SRCVERSION
tar xvf $CWD/$SRCNAM-$SRCVERSION.tar.gz
cd $SRCNAM-$SRCVERSION
chown -R root:root .
find . ! -type l    -a \( \
  \(     -perm /111 -a ! -perm 755 -a -exec chmod -f 755 {} + \) -o \
  \(   ! -perm /111 -a ! -perm 644 -a -exec chmod -f 644 {} + \) \)

#patch -p1 < $CWD/occt.git-7f523af8e8a63ee17d8fc26f107c191cd51dcd44.patch
#sed -i -e '/#include <iostream>/a#include <limits>' src/ViewerTest/ViewerTest_CmdParser.cxx

# Fix bogus install path
#sed -i -e 's|\${INSTALL_DIR}/\${INSTALL_DIR_CMAKE}/OpenCASCADECompile|${INSTALL_DIR_CMAKE}/OpenCASCADECompile|' \
#  CMakeLists.txt

# Strictly speaking VTK is optional, but the only user of OCC in SBo is FreeCAD,
# and FreeCAD wants OCC's VTK support. :)

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS -fpermissive" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DINSTALL_DIR_LIB=lib${LIBDIRSUFFIX} \
    -DINSTALL_DIR_CMAKE=lib${LIBDIRSUFFIX}/cmake/opencascade \
    -DINSTALL_DIR_DOC=doc/$PRGNAM-$VERSION \
    $use_ffmpeg \
    -DUSE_FREEIMAGE=${WITH_FREEIMAGE:-OFF} \
    -DUSE_RAPIDJSON=ON \
    -DINSTALL_RAPIDJSON=OFF \
    -DUSE_TBB=ON \
    -DINSTALL_TBB=OFF \
    -DUSE_VTK=ON \
    -DINSTALL_VTK=OFF \
    -D3RDPARTY_VTK_INCLUDE_DIR="$(ls -1d /usr/include/vtk-9.* )" \
    -D3RDPARTY_VTK_LIBRARY_DIR=/usr/lib${LIBDIRSUFFIX} \
   -DCMAKE_BUILD_TYPE=Release ..

  make
  make install DESTDIR=$PKG
cd ..

# CI's sbopkg complains about these, so move them away
mkdir -p $PKG/usr/share/opencascade
mv $PKG/usr/bin/{custom,custom_gcc_*,env}.sh $PKG/usr/share/opencascade/

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

cd $PKG/usr/lib${LIBDIRSUFFIX}/cmake/opencascade
sed -i -e 's/\\\${OCCT_INSTALL_BIN_LETTER}//' *.cmake
cd -

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  LICENSE_LGPL_21.txt OCCT_LGPL_EXCEPTION.txt README.md \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# fix perms in docs dir
chmod -c 0644 $PKG/usr/doc/$PRGNAM-$VERSION/*

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