#!/bin/bash
set -o nounset
set -o errexit

V8_REV=e8adbe7821be5be02ef187912a74dde1152eefb1

sync=YES
config=Release

while [[ $# > 0 ]]; do
  flag="$1"
  case $flag in
    --no-sync)
      sync=NO
      ;;
    --debug)
      config=Debug
      ;;
    *)
      echo "unknown arg ${flag}"
      ;;
  esac
  shift
done

SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
ROOT_DIR="$(dirname "${SCRIPT_DIR}")"

cd ${ROOT_DIR}/third_party/v8-native-prototype

# copied from v8-native-prototype/install-dependencies.sh, but this fetches a
# shallow clone.
if [[ ! -d depot_tools ]]; then
  echo "Cloning depot_tools"
  git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
fi

export PATH=$PWD/depot_tools:$PATH

if [[ ${sync} = "YES" ]]; then
  if [[ ! -d v8 ]]; then
    echo "Fetching v8"
    mkdir v8
    pushd v8
    fetch --no-history v8
    ln -fs $PWD/.. v8/third_party/wasm
    popd
  else
    pushd v8/v8
    git fetch origin
    git checkout origin/master
    popd
  fi

  pushd v8
  gclient update --revision=${V8_REV}
  popd
fi

# Don't use the CC from the environment; v8 doesn't seem to build properly with
# it.
unset CC
cd v8/v8
GYP_GENERATORS=ninja build/gyp_v8 -Dv8_wasm=1 -Dwerror=
time ninja -C out/${config} d8