#!/bin/bash

# Slackware build script for OpenCASCADE

# Copyright 2010-2012 Niels Horn, Rio de Janeiro, RJ, Brazil
# 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.
#
# Maintained by David Spencer <baildon.research@googlemail.com>

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

PRGNAM=OpenCASCADE
VERSION=${VERSION:-7.3.0}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}

SRCNAM=occt
SRCVER=V$(echo $VERSION | tr . _)

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$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 $SRCNAM-$SRCVER
tar xvf $CWD/$SRCNAM-$SRCVER.tar.gz
cd $SRCNAM-$SRCVER
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 {} \;

patch -p1 < $CWD/fix-flow-control-nesting.patch

# Thanks to Chris Willing for the fix for VTK-8.1.0 compatibility.
# This new version of the patch is still needed for occt 7.3.0 :(
patch -p0 < $CWD/occt-7.3.0_vtk_InsertNextTupleValue.diff

# 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" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DINSTALL_DIR_LIB=lib${LIBDIRSUFFIX} \
    -DINSTALL_DIR_CMAKE=lib${LIBDIRSUFFIX}/cmake/opencascade \
    -DINSTALL_DIR_DOC=doc/$PRGNAM-$VERSION \
    -DUSE_GLES2=OFF \
    -DUSE_FFMPEG=${WITH_FFMPEG:-OFF} \
    -DUSE_FREEIMAGE=${WITH_FREEIMAGE:-OFF} \
    -DUSE_GL2PS=${WITH_GL2PS:-OFF} \
    -DUSE_TBB=${WITH_TBB:-OFF} \
    -DUSE_VTK=ON \
    -D3RDPARTY_VTK_INCLUDE_DIR=/usr/include/vtk-9.0 \
    -D3RDPARTY_VTK_LIBRARY_DIR=/usr/lib${LIBDIRSUFFIX} \
    -DCMAKE_BUILD_TYPE=Release ..
  find . -name link.txt -exec sed -i s/vtkRenderingOpenGL/vtkRenderingOpenGL2/g {} +
  make
  make install DESTDIR=$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

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  LICENSE_LGPL_21.txt OCCT_LGPL_EXCEPTION.txt README.txt \
  $PKG/usr/doc/$PRGNAM-$VERSION
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}