#!/bin/bash

# Slackware build script for pcsx2

# Copyright 2022 Steven Voges <Oregon, USA>
# 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=pcsx2
VERSION=${VERSION:-20220908_4707c02}
SRCVER=${SRCVER:-4707c02a3439107c83293689d3ab9aa251cdccfc}
CUBEB=${CUBEB:-dc511c6b3597b6384d28949285b9289e009830ea}
GLSLANG=${GLSLANG:-c9706bdda0ac22b9856f1aa8261e5b9e15cd20c5}
IMGUI=${IMGUI:-60bea052a92cbb4a93b221002fdf04f0da3698e1}
LIBCHDR=${LIBCHDR:-5de1a59019815ccdbba0fe07c71b31406d023248}
VULKANHEADERS=${VULKANHEADERS:-9f4c61a31435a7a90a314fc68aeb386c92a09c0f}
QT=${QT:-OFF}
WAYLAND=${WAYLAND:-ON}
BUILD=${BUILD:-1}
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}
DEPS=$TMP/$PRGNAM-$SRCVER/3rdparty

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

tar xvf $CWD/cubeb-$CUBEB.tar.gz -C \
  $DEPS/cubeb/cubeb --strip-components 1
tar xvf $CWD/glslang-$GLSLANG.tar.gz -C \
  $DEPS/glslang/glslang --strip-components 1
tar xvf $CWD/imgui-$IMGUI.tar.gz -C \
  $DEPS/imgui/imgui --strip-components 1
tar xvf $CWD/libchdr-$LIBCHDR.tar.gz -C \
  $DEPS/libchdr/libchdr --strip-components 1
tar xvf $CWD/Vulkan-Headers-$VULKANHEADERS.tar.gz -C \
  $DEPS/vulkan-headers --strip-components 1

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 \
    -Wno-dev \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_BUILD_STRIP=ON \
    -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
    -DDISABLE_PCSX2_WRAPPER=ON \
    -DDISABLE_SETCAP=ON \
    -DENABLE_TESTS=OFF \
    -DPACKAGE_MODE=ON \
    -DQT_BUILD=$QT \
    -DSDL2_API=TRUE \
    -DUSE_SYSTEM_LIBS=ON \
    -DWAYLAND_API=$WAYLAND \
    -DXDG_STD=ON \
    -DCMAKE_BUILD_TYPE=Release ..
  make
  make install/strip 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

mv $PKG/usr/share/man $PKG/usr/man
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 $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  COPYING.* README.md \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
mv $PKG/usr/share/doc/Pcsx2/* $PKG/usr/doc/$PRGNAM-$VERSION
rm -r $PKG/usr/share/doc

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