#!/bin/bash

# Slackware build script for MaterialX

# Copyright 2023-2026 Giancarlo Dessi, Cagliari, IT
# 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=MaterialX
VERSION=${VERSION:-1.39.4}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}
EXTVERSION=20251231

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

PYTHON_VERSION=$(python3 -c 'import sys; print("{}".format(sys.version_info.minor))')

if pkg-config --exists OpenImageIO; then
  WITHOIIO=""; [ "${OIIO:-yes}" = "yes" ] && WITHOIIO="-DMATERIALX_BUILD_OIIO=ON "
else
  WITHOIIO=""
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION

BUILDOPTIONS=""
GUI=no
SET_GRAPH_EDITOR=no
SET_VIEWER=no

# Some third-part modules are built as internal but are not included in the
# source tarball because should be added in a git repository of 
# MaterialX cloned with git -recursive, so we have to do the following steps

tar xvf $CWD/external-MaterialX-$EXTVERSION.tar.gz

if [ ${VIEWER:-yes} = "yes" ]; then
  mv external-MaterialX-$EXTVERSION/source/MaterialXView/nanogui/* \
     source/MaterialXView/NanoGUI
  BUILDOPTIONS="-DMATERIALX_BUILD_VIEWER=ON -DNANOGUI_PREFERRED_BACKEND=OpenGL "
  GUI=yes
  SET_VIEWER=yes

  sed -i ./source/MaterialXView/NanoGUI/resources/bin2c.cmake -e \
   "s/cmake_minimum_required (VERSION 2.8.12)/cmake_minimum_required (VERSION 3.10)/g"
fi


if [ ${EDITOR:-yes} = "yes" ]; then
  mv external-MaterialX-$EXTVERSION/source/MaterialXGraphEditor/External/imgui/* \
     source/MaterialXGraphEditor/External/ImGui
  mv external-MaterialX-$EXTVERSION/source/MaterialXGraphEditor/External/imgui-node-editor/* \
     source/MaterialXGraphEditor/External/ImGuiNodeEditor 
  BUILDOPTIONS="$BUILDOPTIONS -DMATERIALX_BUILD_GRAPH_EDITOR=ON "
  GUI=yes
  SET_GRAPH_EDITOR=yes

  sed -i ./source/MaterialXGraphEditor/External/Glfw/CMakeLists.txt -e \
   "s/cmake_minimum_required(VERSION 3.5)/cmake_minimum_required (VERSION 3.10)/g"
fi

if [ $GUI = "yes" ]; then
  cp -a $CWD/materialx.png $CWD/*.desktop ./
fi

if [ ${PYTHON:-yes} = "yes" ]; then
 BUILDOPTIONS="$BUILDOPTIONS -DMATERIALX_BUILD_PYTHON=ON -DMATERIALX_INSTALL_PYTHON=ON "
 patch -p1 < $CWD/fix-setup_py_in.patch
else
 BUILDOPTIONS="$BUILDOPTIONS -DMATERIALX_BUILD_PYTHON=OFF "
fi

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 {} \;
  
if [ "$PYTHON_VERSION" > "10" ]; then
   # This prevents some cmake warnings in current 
   CMAKE_POLICY="-DCMAKE_POLICY_DEFAULT_CMP0148=OLD \
                 -DCMAKE_POLICY_DEFAULT_CMP0175=OLD "
   patch -p1 < $CWD/cstdint.patch
   
else
   CMAKE_POLICY=""
fi

if [ $(cmake --version |head -1 |cut -f3 -d' ') == "3.21.4" ]; then
    echo "export PATH for cmake-opt"
    export PATH="/opt/cmake-opt/bin/:$PATH"
fi

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr/share/MaterialX \
    -DMATERIALX_BUILD_SHARED_LIBS=ON \
    -DMATERIALX_INSTALL_INCLUDE_PATH=/usr/include \
    -DMATERIALX_INSTALL_BIN_PATH=/usr/bin \
    -DMATERIALX_INSTALL_LIB_PATH=/usr/lib${LIBDIRSUFFIX} \
    $WITHOIIO \
    $BUILDOPTIONS \
    $CMAKE_POLICY \
    -DCMAKE_BUILD_TYPE=Release ..
  make
  make install/strip DESTDIR=$PKG
cd ..

rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

# fix wrong, redundant, and/or non standard installation path
rm -rf $PKG/tmp
rm -f $PKG/usr/share/MaterialX/*.md $PKG/usr/share/MaterialX/LICENSE

# remove eventual temporary directory with symlinks to OIIO executables
rm -rf /tmp/oiio

if [ $GUI = "yes" ]; then
 mkdir -p $PKG/usr/bin
 mkdir -p $PKG/usr/share/applications
 mkdir -p $PKG/usr/share/icons/hicolor/256x256/apps
 cp -a $TMP/$PRGNAM-$VERSION/materialx.png $PKG/usr/share/icons/hicolor/256x256/apps
 cd $PKG/usr/bin
fi

if [ "$SET_GRAPH_EDITOR" = "yes" ]; then
 echo "Creating symbolic links and desktop entry for MaterialX Graph Editor ..."
 cp -a $TMP/$PRGNAM-$VERSION/MaterialXGraphEditor.desktop \
   $PKG/usr/share/applications/MaterialXGraphEditor.desktop
fi

if [ "$SET_VIEWER" = "yes" ]; then
 echo "Creating desktop entry for MaterialX View ..."
 cp -a $TMP/$PRGNAM-$VERSION/MaterialXView.desktop \
   $PKG/usr/share/applications/MaterialXView.desktop
fi

cd $TMP/$PRGNAM-$VERSION

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a  *.md LICENSE $PKG/usr/doc/$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
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE