#!/bin/sh

# Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024  Patrick J. Volkerding, Sebeka, MN, 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.

# Merged some ideas from Alex Sarmardzic's script for qt4 at SlackBuilds.org
# ^^ Modified by Robby Workman <rworkman@slackware.com> for QT4 & KDE4
#
# Modifications 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2023  Eric Hameleers, Eindhoven, NL
# Modifications for qt 5.2.0 2013 by Michael James, AU
# Modifications for qt 5.x by Eric Hameleers, Eindhoven, NL
# Modifications for qt 6.x 2023, 2024 by Eric Hameleers, Eindhoven, NL

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

PKGNAM=qt6
VERSION=$(ls qt-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)
BUILD=${BUILD:-1}
PKGSRC=$(echo $VERSION | cut -d - -f 1)
PKGVER=$(echo $VERSION | tr - _)

USE_CODECS=${USE_CODECS:-YES}
SYSTEM_FFMPEG=${SYSTEM_FFMPEG:-YES}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) readelf /usr/bin/file -A | grep -E -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-${PKGVER}-${ARCH}-${BUILD}${TAG}.txz"
  exit 0
fi

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  SLKLDFLAGS="-L/usr/lib64"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "armv7hl" ]; then
  # To prevent "qatomic_armv6.h error: output number 2 not directly addressable"
  # More permanent solution is to patch gcc:
  # http://bazaar.launchpad.net/~linaro-toolchain-dev/gcc-linaro/4.6/revision/106731
  SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16 -fno-strict-volatile-bitfields"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
else
  SLKCFLAGS="-O2"
  SLKLDFLAGS=""
  LIBDIRSUFFIX=""
fi

case "$ARCH" in
    arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
    *)    TARGET=$ARCH-slackware-linux ;;
esac

NUMJOBS=${NUMJOBS:-" -j $(expr $(nproc) + 1) "}
NINJAJOBS=${NINJAJOBS:-"$(echo $NUMJOBS | cut -f 2 -d j | tr -d ' ')"}
export NINJAJOBS

TMP=${TMP:-/tmp}
PKG=$TMP/package-${PKGNAM}

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf qt-everywhere-src-$VERSION
echo "Extracting qt-everywhere-src-$VERSION"
tar xf $CWD/qt-everywhere-src-$VERSION.tar.?z* || exit 1
cd qt-everywhere-src-$PKGSRC || exit 1

chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \+

# If we build our own Qt, unset the QT-related environment variables,
# so that a pre-existing Qt will not be picked up and create errors later:
unset QTDIR
unset QT6DIR
NEWPATH="/usr/lib${LIBDIRSUFFIX}/${PKGNAM}/bin"
for elem in $(echo $PATH | cut -d: --output-delimiter=' ' -f1-) ; do
  if ! $(echo "$elem"| grep -q /qt) ; then
    NEWPATH="$NEWPATH:$elem"
  fi
done
export PATH="$NEWPATH"

# Fix path to mysql header:
cat $CWD/patches/qt5.mysql.h.diff | patch -p1 --verbose || exit 1

# If PulseAudio is not found, use the _alsa $TAG and disable it in the build:
if ! pkg-config --exists libpulse 2>/dev/null ; then
  USE_PULSEAUDIO=${USE_PULSEAUDIO:-"OFF"}
  TAG="${TAG}_alsa"
else
  USE_PULSEAUDIO=${USE_PULSEAUDIO:-"ON"}
  TAG=${TAG:-""}
fi

# Re-add support for 32bit architectures - Google no longer supports it:
sed -i qtwebengine/src/3rdparty/chromium/BUILD.gn \
  -e 's/target_os != "linux" || /target_os == "linux" || /'
pushd qtwebengine
  # Thanks Debian! See https://salsa.debian.org/qt-kde-team/qt6/qt6-webengine/-/tree/master/debian/patches
  cat $CWD/patches/qt6-webengine_32bit_compressing_files.patch | patch -p1 --verbose || exit 1
popd
cat $CWD/patches/nodejs-allow-32bit.patch | patch -p1 --verbose || exit 1

# GCC13 requires this include:
cat $CWD/patches/qt6-3d_gcc13.patch | patch -p0 --verbose || exit 1

# Previously we didn't have a protobuf package in Slackware.
# Now that we do, it's apparently too new to use with Qt6, so let's just
# disable it to get the same features that we previously did.
# Patches would be accepted here. :-)
PROTOBUF="-DQT_FEATURE_qtprotobufgen=OFF"

# The qtquick3dphysics only compiles on a limited set of architectures:
case "${ARCH}" in
  i?86 | arm | s390) DO_PHYSX3D="OFF" ;;
  *)                 DO_PHYSX3D="ON" ;;
esac

# Use our custom compiler and linker flags:
sed -e "s|^\(QMAKE_CFLAGS_RELEASE.*\)|\1 ${SLKCFLAGS}|" \
  -i qtbase/mkspecs/common/gcc-base.conf || exit 1
sed -e "s|^\(QMAKE_LFLAGS_RELEASE.*\)|\1 ${SLKLDFLAGS}|" \
  -i qtbase/mkspecs/common/g++-unix.conf || exit 1

export CFLAGS="$SLKCFLAGS"
export CXXFLAGS="$SLKCFLAGS"
export OPENSOURCE_CXXFLAGS="$SLKCFLAGS"
export QTDIR="${TMP}/qt-everywhere-src-${PKGSRC}"
export LD_LIBRARY_PATH="${QTDIR}/qtbase/lib:${QTDIR}/qttools/lib:${LD_LIBRARY_PATH}"
export QT_PLUGIN_PATH="${QTDIR}/qtbase/plugins"
cmake -S $(pwd) -B build-${PKGNAM} \
  -G Ninja \
  -Wno-dev \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_C_FLAGS_RELEASE:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_FLAGS_RELEASE:STRING="$SLKCFLAGS" \
  -DCMAKE_INSTALL_PREFIX=/usr \
  -DBUILD_qtquick3dphysics:BOOL=${DO_PHYSX3D} \
  -DINSTALL_BINDIR=/usr/lib${LIBDIRSUFFIX}/qt6/bin \
  -DINSTALL_PUBLICBINDIR=usr/bin \
  -DINSTALL_LIBDIR=/usr/lib${LIBDIRSUFFIX} \
  -DINSTALL_LIBEXECDIR=/usr/lib${LIBDIRSUFFIX}/qt6/bin \
  -DINSTALL_ARCHDATADIR=/usr/lib${LIBDIRSUFFIX}/qt6 \
  -DINSTALL_DATADIR=/usr/share/qt6 \
  -DINSTALL_INCLUDEDIR=/usr/include/qt6 \
  -DINSTALL_MKSPECSDIR=lib/qt6/mkspecs \
  -DINSTALL_DOCDIR=/usr/doc/qt6-${PKGVER} \
  -DINSTALL_EXAMPLESDIR=/usr/doc/qt6-${PKGVER}/examples \
  -DFEATURE_libproxy=ON \
  -DFEATURE_no_direct_extern_access=ON \
  -DFEATURE_openssl_linked=ON \
  -DFEATURE_pulseaudio="${USE_PULSEAUDIO}" \
  -DFEATURE_system_sqlite=ON \
  -DFEATURE_system_xcb_xinput=ON \
  -DFEATURE_use_gold_linker=ON \
  -DFEATURE_webengine_proprietary_codecs="${USE_CODECS}" \
  -DFEATURE_webengine_system_ffmpeg="${SYSTEM_FFMPEG}" \
  -DFEATURE_webengine_system_pulseaudio="${USE_PULSEAUDIO}" \
  -DFEATURE_webengine_webrtc_pipewire=ON \
  $PROTOBUF \
  -DQT_BUILD_EXAMPLES=OFF || exit 1
#cmake --build build-${PKGNAM} --parallel $NINJAJOBS || cmake --build build-${PKGNAM} || exit 1
# Don't try again non-parallel... it just makes you wait a long time to see
# what the error was.
cmake --build build-${PKGNAM} --parallel $NINJAJOBS || exit 1
DESTDIR=$PKG cmake --install build-${PKGNAM} || exit 1

# Strip binaries:
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Remove rpaths:
for file in $(find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF | cut -f 1 -d : 2> /dev/null) ; do
  if [ ! "$(patchelf --print-rpath $file 2> /dev/null)" = "" ]; then
    patchelf --remove-rpath $file
  fi
done

# Fix the path in prl files:
find "$PKG/usr/lib${LIBDIRSUFFIX}" -type f -name '*.prl' \
  -exec sed -i -e '/^QMAKE_PRL_BUILD_DIR/d;s/\(QMAKE_PRL_LIBS =\).*/\1/' {} \;

# Install symlinks to the Qt6 binaries in the $PATH:
mkdir -p $PKG/usr/bin
pushd $PKG
# Setting INSTALL_PUBLICBINDIR creates user_facing_tool_links.txt files:
find $TMP/qt-everywhere-src-$PKGSRC/build-${PKGNAM} \
  -mindepth 1 -maxdepth 2 -name user_facing_tool_links.txt \
  | xargs cat | sort | uniq \
  | while read MYINP ; do ln -s $MYINP ; done
popd

# Set the QT6DIR variable in the environment:
mkdir -p $PKG/etc/profile.d
sed -e "s,@LIBDIRSUFFIX@,${LIBDIRSUFFIX},g" $CWD/profile.d/$PKGNAM.sh \
  > $PKG/etc/profile.d/$PKGNAM.sh
sed -e "s,@LIBDIRSUFFIX@,${LIBDIRSUFFIX},g" $CWD/profile.d/$PKGNAM.csh \
  > $PKG/etc/profile.d/$PKGNAM.csh
chmod 0755 $PKG/etc/profile.d/*

# Add menu entries for all those hidden but great Qt applications:
# Qt6 logo:
mkdir -p $PKG/usr/share/icons/hicolor/{48x48,128x128}/apps
convert qtdoc/doc/src/images/qt-logo.png  -resize 48x48 $PKG/usr/share/icons/hicolor/48x48/apps/qt6-logo.png
convert qtdoc/doc/src/images/qt-logo.png  -resize 128x128 $PKG/usr/share/icons/hicolor/128x128/apps/qt6-logo.png
# Assistant icons
install -p -m644 -D qttools/src/assistant/assistant/images/assistant.png $PKG/usr/share/icons/hicolor/32x32/apps/qt6-assistant.png
install -p -m644 -D qttools/src/assistant/assistant/images/assistant-128.png $PKG/usr/share/icons/hicolor/128x128/apps/qt6-assistant.png
# Designer icon
install -p -m644 -D qttools/src/designer/src/designer/images/designer.png $PKG/usr/share/icons/hicolor/128x128/apps/qt6-designer.png
# QDbusViewer icons
install -p -m644 qttools/src/qdbus/qdbusviewer/images/qdbusviewer.png $PKG/usr/share/icons/hicolor/32x32/apps/qt6-qdbusviewer.png
install -p -m644 qttools/src/qdbus/qdbusviewer/images/qdbusviewer-128.png $PKG/usr/share/icons/hicolor/128x128/apps/qt6-qdbusviewer.png
# Linguist icons
for icon in qttools/src/linguist/linguist/images/icons/linguist-*-32.png ; do
  size=$(echo $(basename ${icon}) | cut -d- -f2)
  install -p -m644 -D ${icon} $PKG/usr/share/icons/hicolor/${size}x${size}/apps/qt6-linguist.png
done

# And the .desktop files too:
mkdir -p $PKG/usr/share/applications
cat <<EOF > $PKG/usr/share/applications/qt6-designer.desktop
[Desktop Entry]
Name=Qt6 Designer
GenericName=Interface Designer
Comment=Design GUIs for Qt6 applications
Exec=designer6
Icon=qt6-designer
MimeType=application/x-designer;
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;
EOF
cat <<EOF > $PKG/usr/share/applications/qt6-assistant.desktop
[Desktop Entry]
Name=Qt6 Assistant 
Comment=Shows Qt6 documentation and examples
Exec=assistant6
Icon=qt6-assistant
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;Documentation;
EOF
cat <<EOF > $PKG/usr/share/applications/qt6-linguist.desktop
[Desktop Entry]
Name=Qt6 Linguist 
Comment=Add translations to Qt6 applications
Exec=linguist6
Icon=qt6-linguist
MimeType=text/vnd.trolltech.linguist;application/x-linguist;
Terminal=false
Encoding=UTF-8
Type=Application
Categories=Qt;Development;
EOF
cat <<EOF > $PKG/usr/share/applications/qt6-qdbusviewer.desktop
[Desktop Entry]
Name=Qt6 QDbusViewer 
GenericName=Qt6 D-Bus Debugger
Comment=Debug D-Bus applications
Exec=qdbusviewer6
Icon=qt6-qdbusviewer
Terminal=false
Type=Application
Categories=Qt;Development;Debugger;
EOF

# Add a documentation directory:
mkdir -p $PKG/usr/doc/$PKGNAM-$PKGVER
cp -a \
  README* LICENSE.* \
  qtwebengine/{CHROMIUM_VERSION,LICENSE.Chromium} \
  $PKG/usr/doc/$PKGNAM-$PKGVER
find -maxdepth 2 -name LICENSES \
  | xargs -I{} cp -ia --parents {} $PKG/usr/doc/$PKGNAM-$PKGVER/
if [ -d $PKG/usr/lib${LIBDIRSUFFIX}/qt6/doc/html ]; then
  ( cd $PKG/usr/doc/$PKGNAM-$PKGVER
    ln -sf /usr/lib${LIBDIRSUFFIX}/qt6/doc/html .
  )
fi

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 $TMP/$PKGNAM-$PKGVER-$ARCH-${BUILD}${TAG}.txz