#!/bin/bash

# Slackware build script for qemu

# Copyright 2009, 2010  Andrew Brouwers <abrouwers@gmail.com>
# Copyright 2013-2024  Edward W. Koenig, Vancouver, USA <kingbeowulf@linuxgalaxy.org>
# 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=qemu-static
VERSION=${VERSION:-9.2.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

TARNAM=${PRGNAM%-static}

PCRE_VERSION=8.45
GLIB2_VERSION=2.70.5
GLIBC_VERSION=2.33

KVMGROUP=${KVMGROUP:-users}
TARGETS=${TARGETS:-all}
VNC_ENABLE=${VNC_ENABLE:-yes}
AUDIODRIVERS=${AUDIODRIVERS:-pa,alsa,oss,sdl}
BRIDGE_HELPER_SETUID=${BRIDGE_HELPER_SETUID:-yes}
SLIRP=${SLIRP:-=yes}

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 [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
  KVMARCH="i386"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
  KVMARCH="i386"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
  KVMARCH="x86_64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP

(
  rm -rf $TMP/static-glibc
  mkdir -p $TMP/static-glibc
  rm -rf glibc-$GLIBC_VERSION
  tar xvf $CWD/glibc-$GLIBC_VERSION.tar.*z*
  cd glibc-$GLIBC_VERSION
  patch -p1 < $CWD/staticpie.patch

  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 {} + || true

  export CC='ccache gcc'
  export CXX='ccache g++'
  unset LD_LIBRARY_PATH
  mkdir build
  cd build
  CFLAGS="$SLKCFLAGS" \
        CXXFLAGS="$SLKCFLAGS" \
        ../configure \
        --enable-static-pie \
        --prefix=$TMP/static-glibc/

  make V=1
  make install
)

L_LIBFLAG_PCRE=-L$TMP/static-pcre/usr/local/lib/
(
  rm -rf $TMP/static-pcre
  mkdir -p $TMP/static-pcre
rm -rf pcre-$PCRE_VERSION
tar xvf $CWD/pcre-$PCRE_VERSION.tar.*z*
cd pcre-$PCRE_VERSION
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 {} + || true

export CC='ccache gcc'
export CXX='ccache g++'

LD_LIBRARY_PATH="$TMP/static-glibc/tmp/glibc/lib/" \
LIBRARY_PATH="$TMP/static-glibc/tmp/glibc/lib/" \
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --enable-static \
  --disable-shared \
  --enable-utf8 \
  --enable-pcre16 \
  --enable-pcre32 \
  --enable-jit \
  --disable-cpp \
  --enable-unicode-properties

make V=1
make install DESTDIR=$TMP/static-pcre
)


L_LIBFLAG_GLIB2=-L$TMP/static-glib2/usr/local/lib$LIBDIRSUFFIX/
(
  # TODO: https://gist.github.com/greyltc/c379a37366454ae6f6732fb23a80194b
rm -rf glib-$GLIB2_VERSION
tar xvf $CWD/glib-$GLIB2_VERSION.tar.*z*
cd glib-$GLIB2_VERSION

rm -rf  $TMP/static-glib2
mkdir -p $TMP/static-glib2

mkdir meson-build
cd meson-build

LDFLAGS='-static-pie' \
CFLAGS="$SLKCFLAGS -I$TMP/static-pcre/usr/local/include $TMP/static-glibc/lib/rcrt1.o " \
CXXFLAGS="$SLKCFLAGS  $TMP/static-glibc/lib/rcrt1.o "
meson setup \
  --default-library static \
  --buildtype=release \
  -Dselinux=disabled \
  -Dfam=false \
  -Dman=false \
  -Dgtk_doc=false \
  -Dtests=false \
  -Dinstalled_tests=false \
  .. || exit 1
  "${NINJA:=ninja}" $NUMJOBS || exit 1
  DESTDIR=$TMP/static-glib2 $NINJA install || exit 1
)

rm -rf $TARNAM-$VERSION
tar xvf $CWD/$TARNAM-$VERSION.tar.xz
cd $TARNAM-$VERSION
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 {} + || true


# Use newer meson from python3-meson-opt
PYVER=$(python3 -c 'import sys; print("%d.%d" % sys.version_info[:2])')
export PYTHONPATH=/opt/python$PYVER/site-packages

sed -i "/subdir('tests/d" meson.build

LIBRARY_PATH="$TMP/static-glibc/lib/" \
CC='ccache gcc' \
LDFLAGS="$SLKCFLAGS $L_LIBFLAG_GLIB2 $L_LIBFLAG_PCRE -L$TMP/static-glibc/lib" \
./configure \
--prefix=/usr \
--libdir=/usr/lib${LIBDIRSUFFIX} \
--sysconfdir=/etc \
--includedir=/usr/include \
--localstatedir=/var \
--docdir=/usr/doc/$PRGNAM-$VERSION \
--enable-kvm \
--disable-debug-info \
--enable-user \
--static \
--disable-numa \
--disable-linux-io-uring \
--enable-attr \
--enable-linux-user \
--enable-tcg \
--disable-bpf \
--disable-bsd-user \
--disable-capstone \
--disable-docs \
--disable-fdt \
--disable-gcrypt \
--disable-glusterfs \
--disable-gnutls \
--disable-gtk \
--disable-install-blobs \
--disable-kvm \
--disable-libiscsi \
--disable-libnfs \
--disable-libssh \
--disable-linux-io-uring \
--disable-nettle \
--disable-opengl \
--disable-qom-cast-debug \
--disable-sdl \
--disable-system \
--disable-tools \
--disable-tpm \
--disable-vde \
--disable-vhost-crypto \
--disable-vhost-kernel \
--disable-vhost-net \
--disable-vhost-user \
--disable-vnc \
--disable-werror \
--disable-xen \
--disable-zstd \
--enable-pie

LIBRARY_PATH="$TMP/static-glibc/lib/" \
make V=1
make install DESTDIR=$PKG

(
  cd $PKG/usr/bin/
  for b in qemu-* ; do
    mv $b $b-static
  done
)

mkdir -p $PKG/usr/share/binfmts/
cp $CWD/binfmts/* $PKG/usr/share/binfmts/
chown root:root $PKG/usr/share/binfmts/*

rm -rf $PKG/var
rm -rf $PKG/usr/share/qemu

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

# Add docs to the proper location
rm -rf $PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYING* LICENSE \
   $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

cat > $PKG/usr/doc/$PRGNAM-$VERSION/README <<EOF
For actual documentation see /usr/doc/qemu-*/
EOF

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