build-monolith

#!/bin/bash -e
VERSION="${VERSION:-$(curl -s 'https://omahaproxy.appspot.com/all.json?os=linux&channel=stable' | python -c 'import json,sys;print(json.load(sys.stdin)[0]["versions"][0]["v8_version"])')}"
TARGET_CPU="${TARGET_CPU:-x64}"

[ -f depot_tools/gclient ] || (rm -rf depot_tools && git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git)
export PATH="$PATH:$(pwd)/depot_tools"
[ -d v8 ] || (gclient; fetch v8)

cd v8
if [ "$(git describe --tags)" != "$VERSION" ]; then
    git fetch
    echo "Building v8 version: $VERSION"
    git checkout "$VERSION"
    gclient sync
fi

tools/dev/v8gen.py "$TARGET_CPU".release
cat > out.gn/"$TARGET_CPU".release/args.gn <<EOF
is_debug = false
target_cpu = "$TARGET_CPU"
v8_target_cpu = "$TARGET_CPU"
v8_monolithic = true
v8_static_library = true
treat_warnings_as_errors = false
icu_use_data_file = false
v8_use_external_startup_data = false
v8_enable_pointer_compression = false

is_clang = false
use_custom_libcxx = false
use_custom_libcxx_for_host = false
use_sysroot = false
use_glib = false
EOF
gn gen out.gn/"$TARGET_CPU".release

ninja -C out.gn/"$TARGET_CPU".release v8_monolith

name="v8-monolith-$VERSION-$TARGET_CPU"
rm -rf "$name"
mkdir "$name"

cp -r include "$name"
cp out.gn/"$TARGET_CPU".release/obj/libv8_monolith.a "$name"
echo "$VERSION" > "$name/v8version"
echo "$TARGET_CPU" > "$name/v8arch"

tar cJf "$name.tar.xz" "$name"
rm -rf "$name"
echo Monolith built: "$name.tar.xz"