#!/bin/bash

set -ex

export PATH=`pwd`/depot_tools:"$PATH"

# https://github.com/prahladyeri/tuxdrive/issues/3
apt-get install python3-pip -y
pip3 install httplib2 --upgrade

fetch v8

cd v8  # if this fails, exit! hence the set -ex

#gclient sync -r 6.9.427.6  # 55da769bafac8b531cd8b388df56161b8b7c6416
#gclient sync -r 7.1.69     #
#gclient sync -r lkgr/6.9
#gclient sync -r 6.9.427.13 # https://ci.appveyor.com/project/pmed/v8pp
#gclient sync -r 7.5.288.23  # https://github.com/pmed/v8-nuget/
#gclient sync -r 8.0.426.15  # stupid test
#gclient sync -r 7.2.1  # stupid test
gclient sync -r 8.2.297.1  # https://github.com/pmed/v8-nuget/

# Looks like we have to use GN now: https://github.com/v8/v8/wiki/Building-with-GN

# initial build
# temp
#rm -rf out/x64.release
./tools/dev/gm.py x64.release

# we don't want std::_Cr, but std::__1 like everybody else is using
# note that this is only relevant if use_custom_libcxx = true.
# unfortunately I don't know how to specify v8 to use libc++ from the system
# I asked a question about this here: https://groups.google.com/forum/#!topic/v8-users/Do5MvAvYFgs
sed -i.bak 's/_LIBCPP_ABI_VERSION=Cr/_LIBCPP_ABI_VERSION=1/' build/config/c++/BUILD.gn

# workaround, see notes.txt
echo "v8_enable_embedded_builtins = false"  | tee -a out/x64.release/args.gn
echo "v8_use_external_startup_data = false" | tee -a out/x64.release/args.gn
echo "v8_use_snapshot = false"              | tee -a out/x64.release/args.gn
# set below to true to make it use libc++ (although it will use the one it is bundled with,
# and also it will enable unsafe abi stuff, which means basically alpha features afaik)
echo "use_custom_libcxx = false"             | tee -a out/x64.release/args.gn
# possibly they use a different version of clang compiling v8.
# however, I already set my own, probably newer clang version.
# ran into: https://groups.google.com/forum/#!topic/v8-users/Jb1VSouy2Z0
#echo "is_clang = false"                     | tee -a out/x64.release/args.gn
# setting to true now, and see if we use this clang on starcry if it works..
echo "is_clang = true"                     | tee -a out/x64.release/args.gn

# the only remaining issue was: undefined reference to `typeinfo for v8::ArrayBuffer::Allocator'
# this is the case with (gnu) libstd++ , only remaining issue for me
# https://github.com/danbev/learning-v8/pull/4
echo "use_rtti = true"                     | tee -a out/x64.release/args.gn

# produce monolith (single static all in one .a file)
echo "v8_monolithic = true"                 | tee -a out/x64.release/args.gn
ninja -C out/x64.release v8_monolith

# produce .so files (shared libs)
# temporary disable the .so files (I'm not using them for now, and they are slow to build)
#sed -i.bak '/^v8_monolithic/d' out/x64.release/args.gn
#echo "is_component_build = true"            | tee -a out/x64.release/args.gn
#ninja -C out/x64.release