v8 build script.

build_v8.sh

#!/bin/bash -e

V8_RELEASE_TAG=5.7.457
DEPOT_TOOLS_REPO=https://chromium.googlesource.com/chromium/tools/depot_tools.git

git -C depot_tools pull || git clone ${DEPOT_TOOLS_REPO} depot_tools

export PATH=$PWD/depot_tools:$PATH

if [ ! -d "v8" ]; then
  fetch v8
  cd v8
else
  cd v8
  gclient sync
fi

if [ ! $(git describe --tags --abbrev=0) = "${V8_RELEASE_TAG}" ]; then
    git checkout tags/${V8_RELEASE_TAG}
    gclient sync
fi

GYP_DEFINES="mac_deployment_target=10.11" \
 make -j8 x64.release GYPFLAGS="-Dv8_use_external_startup_data=0 -Dv8_enable_i18n_support=0 -Dv8_enable_gdbjit=0"

cd ..

cat<< EOF > "v8.pc"
prefix=$PWD/v8
includedir=\${prefix}/include
libdir=\${prefix}/out.gn/x64.release/

Name: libv8
Description: V8 engine
Version:${V8_RELEASE_TAG}
Cflags: -I\${includedir} -std=c++11
Libs: -L\${libdir} -lv8_base -lv8_libbase -lv8_libplatform -ldl -pthread
EOF