Install depot-tools

git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
export PATH=`pwd`/depot_tools:"$PATH"

Fetch V8

fetch v8
cd v8

Commit Reversion & Apply patch

git checkout [Commit hash]
gclient sync -D

git apply [diff patch]

Install Build Dependencies

./build/install-build-deps.sh

sudo apt-get install ninja-build

ninja-build 없으면 깔아줘야된다.

Build

./tools/dev/gm.py [config]

config : x64.debug, x64.release