#!/bin/bash

v8testedrev=9.5.172.13

v8testedcommit=

if [[ $v8testedcommit == "" ]]; then

v8testedcommit=$v8testedrev

fi

jsontag=v3.9.1

function usage {

echo

echo 'Downloads and builds V8 for use with ClearScript.'

echo

echo 'V8Update.sh [-n] [-y] [cpu] [mode] [revision]'

echo

echo ' -n Do not download; use previously downloaded files if possible.'

echo ' -y Reply "yes" automatically when prompted to continue.'

echo ' cpu Target CPU: "x86", "x64", "arm", or "arm64".'

echo ' mode Build mode: "Debug" or "Release" (default).'

echo ' revision V8 revision: "Latest", "Tested" (default) or branch/commit/tag.'

echo ' * Examples: "candidate", "3.29.88.16".'

echo ' * View history at https://chromium.googlesource.com/v8/v8.git.'

echo

exit $1

}

function abort {

exit 1

}

function fail {

echo "*** THE PREVIOUS STEP FAILED ***"

abort

}

function continue {

echo "$1"

if [[ $autoreply == false ]]; then

read -p "Continue (y/N)? " -r

if [[ ! $REPLY =~ ^[Yy]$ ]]; then exit 1; fi

fi

}

v8rev=$v8testedrev

v8commit=$v8testedcommit

download=true

mode=Release

isdebug=false

isofficial=true

autoreply=false

shopt -s nocasematch

while [[ $# -gt 0 ]]; do

if [[ $1 == "-h" ]]; then

usage 0

elif [[ $1 == "-n" ]]; then

download=false

elif [[ $1 == "-y" ]]; then

autoreply=true

elif [[ $1 == x86 ]]; then

cpu=x86

elif [[ $1 == x64 ]]; then

cpu=x64

elif [[ $1 == arm ]]; then

cpu=arm

elif [[ $1 == arm64 ]]; then

cpu=arm64

elif [[ $1 == debug ]]; then

mode=Debug

isdebug=true

isofficial=false

elif [[ $1 == release ]]; then

mode=Release

isdebug=false

isofficial=true

else

v8rev=$1

v8commit=$1

fi

shift

done

if [[ $cpu == "" ]]; then

arch=`uname -m`

if [[ $arch == i386 ]]; then

cpu=x86

elif [[ $arch == x86_64 ]]; then

cpu=x64

elif [[ $arch == arm ]]; then

cpu=arm

elif [[ $arch == arm32 ]]; then

cpu=arm

elif [[ $arch == aarch32 ]]; then

cpu=arm

elif [[ $arch == arm64 ]]; then

cpu=arm64

elif [[ $arch == aarch64 ]]; then

cpu=arm64

else

echo "Error: Unsupported machine architecture '$arch'"

abort

fi

fi

kernel=`uname -s`

if [[ $kernel == Linux ]]; then

linux=true

else

linux=false

fi

shopt -u nocasematch

if [[ $cpu != x86 && $cpu != x64 && $cpu != arm && $cpu != arm64 ]]; then

echo "Error: Unsupported target CPU '$cpu'"

abort

fi

echo "Build: $cpu $mode"

cd ../V8 || abort

if [[ $download == false && ! -d build ]]; then

continue '*** BUILD DIRECTORY NOT FOUND; DOWNLOAD REQUIRED ***'

download=true

fi

if [[ $download == true ]]; then

shopt -s nocasematch

if [[ $v8rev == tested || $v8rev == $v8testedrev ]]; then

v8rev=$v8testedrev

v8commit=$v8testedcommit

echo "V8 revision: Tested ($v8testedrev)"

elif [[ $v8rev == latest ]]; then

v8rev=master

v8commit=master

echo "V8 revision: Latest"

continue '*** WARNING: THIS V8 REVISION MAY NOT BE COMPATIBLE WITH CLEARSCRIPT ***'

else

echo "V8 revision: $v8rev"

continue '*** WARNING: THIS V8 REVISION MAY NOT BE COMPATIBLE WITH CLEARSCRIPT ***'

fi

shopt -u nocasematch

if [[ -d build ]]; then

echo "Removing old build directory ..."

rm -rf build || fail

fi

echo "Creating build directory ..."

mkdir build || fail

cd build || abort

echo "Downloading Depot Tools ..."

git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git 2>depot_tools.log || fail

PATH=$PWD/depot_tools:$PATH

echo "Downloading V8 and dependencies ..."

gclient config https://chromium.googlesource.com/v8/v8 >config.log || fail

gclient sync -r $v8commit >sync.log || fail

echo "Applying patches ..."

cd v8 || abort

git config user.name ClearScript || fail

git config user.email "ClearScript@microsoft.com" || fail

git apply --reject --ignore-whitespace ../../V8Patch.txt 2>applyV8Patch.log || fail

cd ..

echo "Downloading additional libraries ..."

git clone -n https://github.com/nlohmann/json.git 2>cloneJson.log || fail

cd json || abort

git checkout $jsontag 2>checkout.log || fail

cd ..

cd ..

else

cd build || abort

PATH=$PWD/depot_tools:$PATH

cd ..

fi

cd build/v8 || abort

echo "Creating/updating patches ..."

git diff --ignore-space-change --ignore-space-at-eol >V8Patch.txt 2>createV8Patch.log || fail

echo "Building V8 ..."

if [[ $linux == true ]]; then

build/linux/sysroot_scripts/install-sysroot.py --arch=$cpu

fi

gn gen out/$cpu/$mode --args="enable_precompiled_headers=false fatal_linker_warnings=false is_cfi=false is_component_build=false is_debug=$isdebug is_official_build=$isofficial target_cpu=\"$cpu\" use_custom_libcxx=false use_thin_lto=false v8_embedder_string=\"-ClearScript\" v8_enable_pointer_compression=false v8_enable_31bit_smis_on_64bit_arch=false v8_monolithic=true v8_use_external_startup_data=false v8_target_cpu=\"$cpu\" chrome_pgo_phase=0" >gn-$cpu-$mode.log || fail

ninja -C out/$cpu/$mode obj/libv8_monolith.a >build-$cpu-$mode.log || fail

cd ../..

echo "Importing patches ..."

cp build/v8/V8Patch.txt . || fail

echo "Succeeded!"