#!/bin/bash

# Copyright 2011, 2018  Robby Workman, Tuscaloosa, Alabama, USA
# Copyright 2019, 2020, 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.

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

PKGNAM=mozjs128
SRCNAME=firefox
VERSION=$(basename $(ls $SRCNAME-*.tar.?z | cut -d - -f 2 | rev | cut -f 3- -d . | rev) .source)
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i686 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
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-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

# This will collide with a Firefox build that happens simultaneously.
# Therefore, for use with make_world.sh, REQUIRE_GLOBAL_LOCK.

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

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

if [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=generic"
  LIBDIRSUFFIX=""
  EXTRACONF="--target=$ARCH-slackware-linux --host=$ARCH-slackware-linux"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -march=x86-64 -mtune=generic -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "arm" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-latomic"
  EXTRACONF="--disable-jit"
elif [ "$ARCH" = "loongarch64" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX="64"
  EXTRACONF="--disable-jit"
elif [ "$ARCH" = "mips" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-latomic -lpthread"
  EXTRACONF="--disable-jit"
elif [ "$ARCH" = "mipsel" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
  SLKLDFLAGS="-latomic -lpthread"
  EXTRACONF="--disable-jit"
elif [ "$ARCH" = "ppc64" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX="64"
  EXTRACONF="--enable-linker=bfd"
else
  SLKCFLAGS=${SLKCFLAGS:-"-O2"}
  LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
  SLKLDFLAGS=${SLKLDFLAGS:-""}
  EXTRACONF=${EXTRACONF:-""}
fi

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $SRCNAME-$VERSION ; rm -rf $SRCNAME-$(echo $VERSION | cut -f 1 -d e)
# Unpack this in a subdirectory to prevent changing permissions on /tmp:
rm -rf firefox-unpack
mkdir firefox-unpack
cd firefox-unpack
echo "Extracting $CWD/$SRCNAME-$VERSION.source.tar.?z..."
tar xf $CWD/$SRCNAME-$VERSION.source.tar.?z || exit 1
mv * ..
cd ..
rm -rf firefox-unpack
cd $SRCNAME-$(echo $VERSION | cut -f 1 -d e) || cd $SRCNAME-$VERSION || 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 {} \+

# We need to use the incredibly ancient autoconf-2.13 for this  :/                                                                                             
( cd $CWD/autoconf ; ./autoconf.build )
PATH=$TMP/autoconf-tmp/usr/bin:$PATH

# Patches from Fedora:
zcat $CWD/patches/fix-soname.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/copy-headers.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/icu_sources_data.py-Decouple-from-Mozilla-build-system.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/icu_sources_data-Write-command-output-to-our-stderr.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/emitter.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/init_patch.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/0001-Skip-failing-tests-on-ppc64-and-s390x.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/remove-sloppy-m4-detection-from-bundled-autoconf.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/patches/spidermonkey_checks_disable.patch.gz | patch -p1 --verbose || exit 1

# Remove bundled zlib directory and use system version:
rm -rf modules/zlib

# Restore i686 compile patch (without you need at least pentium4 ARCH):
# Fix header mismatch on x86 with GCC:
if [ "$ARCH" = "i686" ]; then
  zcat $CWD/double_t.x86.diff.gz | patch -p1 --verbose || exit 1
fi

# Build big-endian data file for ppc, ppc64, mips, and s390:
( cd config/external/icu/data ; icupkg -tb icu*l.dat `basename icu*l.dat l.dat`b.dat )
# Fix incorrect specific arm atomic include for jitless-ARMv5:
if [ "$ARCH" = "arm" ]; then
  zcat $CWD/patches/atomic_armv5.diff.gz | patch -p1 --verbose || exit 1
fi
# Cannot build rustc with s390x (segmentation fault), fix script to use prebuild: 
if [ "$ARCH" = "s390x" ]; then
  zcat $CWD/patches/rustup_s390x.diff.gz | patch -p1 --verbose || exit 1
fi
# Fix unexported js::detail::CanonicalizedNaNBits on mips64el
zcat  $CWD/patches/Export-js-detail-CanonicalizedNaNBits-on-architectures-th.patch.gz | patch -p1 --verbose || exit 1

cd js/src

# We need to do this because patches above touch configure.in:
autoconf-2.13

CFLAGS+="$SLKCFLAGS -fno-delete-null-pointer-checks -fno-strict-aliasing -fno-tree-vrp " \
CXXFLAGS+="$SLKCFLAGS -fno-delete-null-pointer-checks -fno-strict-aliasing -fno-tree-vrp " \
LDFLAGS="-Wl,--copy-dt-needed-entries $SLKLDFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --with-system-icu \
  --with-system-zlib \
  --disable-tests \
  --disable-strip \
  --with-intl-api \
  --enable-linker=bfd \
  --enable-readline \
  --enable-shared-js \
  --enable-optimize \
  --disable-debug \
  --enable-pie \
  --disable-jemalloc \
  $EXTRACONF \
  --build=$ARCH-slackware-linux \

# Fix linker on ppc64:
# /usr/bin/clang -std=gnu99 -o nsinstall_real -DXP_UNIX -O3 -fuse-ld=lld host_nsinstall.o host_pathsub.o
# ld.lld: error: /usr/bin/../lib64/gcc/ppc64-slackware-linux/14.1.0/../../../../lib64/Scrt1.o: ABI version 1 is not supported
if [ "$ARCH" = "ppc64" ]; then
  sed -i 's/fuse-ld=lld/fuse-ld=ld/' config/autoconf.mk
fi

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

# No need for the huge static library:
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/libjs_static.*

# Don't ship -config:
rm -f $PKG/usr/bin/js*-config

# Rename shared library to have a proper soname:
SHORTVER=$(echo $PKGNAM | cut -b 6-)
if [ ! -r $PKG/usr/lib${LIBDIRSUFFIX}/libmozjs-${SHORTVER}.so ]; then
  echo "FATAL: trying to rename library but $PKG/usr/lib${LIBDIRSUFFIX}/libmozjs-${SHORTVER}.so is not found."
  exit 1
fi
mv $PKG/usr/lib${LIBDIRSUFFIX}/libmozjs-${SHORTVER}.so $PKG/usr/lib${LIBDIRSUFFIX}/libmozjs-${SHORTVER}.so.0.0.0
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  ln -sf libmozjs-${SHORTVER}.so.0.0.0 libmozjs-${SHORTVER}.so.0
  ln -sf libmozjs-${SHORTVER}.so.0 libmozjs-${SHORTVER}.so
)

mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp ../../README.txt README.html $PKG/usr/doc/$PKGNAM-$VERSION

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

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

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz