#!/bin/bash

# Slackware build script for HHVM

# Copyright 2015-2021 Eugene Wissner, Dachau, Germany
# 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=hhvm
VERSION=${VERSION:-4.104.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

OPAM_STAMP="221708b"
CARGO_BUILD="1"

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

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

if [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  echo "$ARCH is not supported."
  exit 1
fi

set -e

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

mkdir -p hphp/hack/facebook third-party/brotli/bundled_brotli-prefix/src

mkdir -p hphp/hack/_build/opam
tar Jxvf $CWD/hack-switch-$OPAM_STAMP.tar.xz -C hphp/hack/_build/opam
# hhvm prepares an opam switch (an isolated envrionment with a specific OCaml
# compiler version) during the build, it downloads and builds all dependencies.
# To avoid doing this at runtime, I provide a prebuilt switch. Unfortunately
# it contains references to absolute paths it has been built in. Therefore if
# the user doesn't build in the standard directory, we put a link there, so
# that opam can find binaries.
if [ "$TMP" != '/tmp/SBo' ]
then
  rm -rf /tmp/SBo/hhvm-$VERSION/hphp/hack/_build/opam
  mkdir -p /tmp/SBo/hhvm-$VERSION/hphp/hack/_build/opam
  ln -s $TMP/$PRGNAM-$VERSION/hphp/hack/_build/opam/hack-switch \
    /tmp/SBo/hhvm-$VERSION/hphp/hack/_build/opam/hack-switch
fi

tar Jxvf $CWD/cargo-home-$CARGO_BUILD.tar.xz -C hphp/hack
tar Jxvf $CWD/brotli-4b5771be.tar.xz -C third-party/brotli/bundled_brotli-prefix/src

install -m 0755 -D $CWD/opam-2.0.7-x86_64-linux \
  third-party/opam/opamDownload-prefix/src/opam-2.0.7-x86_64-linux
install -m 0644 -D $CWD/rust-1.43.0-x86_64-unknown-linux-gnu.tar.gz \
  third-party/rustc/bundled_rust-prefix/src/rust-1.43.0-x86_64-unknown-linux-gnu.tar.gz
install -m 0644 -D $CWD/fmt-6.1.2.zip third-party/fmt/fmt-prefix/src/fmt-6.1.2.zip
install -m 0644 -D $CWD/fb-prod8-202010.tar.gz \
  third-party/fb-mysql/bundled_fbmysqlclient-prefix/src/fb-prod8-202010.tar.gz

# The working directory is hphp/hack.
cat << EOF > hphp/hack/facebook/fetch_opam2_repo_hack.sh
#!/bin/sh
cp $CWD/index-$OPAM_STAMP.tar.gz facebook/
echo facebook/index-$OPAM_STAMP
EOF
chmod 0755 hphp/hack/facebook/fetch_opam2_repo_hack.sh

patch -p1 --verbose -i $CWD/0001-Link-static-libiberty.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 {} \;

export CMAKE_PREFIX_PATH=`pwd`
cmake \
  -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_STANDARD=17 \
  -DCMAKE_INSTALL_PREFIX=/usr \
  -DCMAKE_INSTALL_LIBDIR=lib${LIBDIRSUFFIX} \
  -DENABLE_MCROUTER=false \
  -DENABLE_EXTENSION_IMAGICK=false \
  -DNON_DISTRIBUTABLE_BUILD=true \
  -DENABLE_LD_GOLD=true \
  -DUSE_JEMALLOC=true \
  -DFORCE_BUNDLED_LZ4=OFF \
  -DMYSQL_UNIX_SOCK_ADDR=/var/run/mysqld/mysqld.sock \
  -DCMAKE_BUILD_TYPE=Release .
make || make -j1
make install DESTDIR=$PKG

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/man
mv hphp/doc/man $PKG/usr/man/man1
find $PKG/usr/man -type f -exec gzip -9 {} \;

install -m 644 -D $CWD/etc/rc.hhvm $PKG/etc/rc.d/rc.hhvm.new
install -m 644 -D $CWD/etc/server.ini $PKG/etc/hhvm/server.ini.new
install -m 644 -D $CWD/etc/php.ini $PKG/etc/hhvm/php.ini.new

mkdir -p $PKG/var/log/hhvm $PKG/usr/lib64/hhvm/extensions

# PID
mkdir -p $PKG/var/run/hhvm
chown apache:apache $PKG/var/run/hhvm

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a *.md LICENSE* hphp/doc/* $PKG/usr/doc/$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:-tgz}