This repository contains a copy of V8 with additional changes needed for Qt. Please use [V8] as prefix to the subject of your commit messages when your change affects V8 itself and not the build system around it. Updating v8: Run ./bin/update-v8.sh [url] [refspec] to update src/3rdparty/v8 to a specific v8 version. The script will remove all Qt specific modifications and save them in /tmp/v8_patch, where they can be applied from using git am. For example: ./bin/update-v8.sh https://github.com/v8/v8.git refs/tags/3.7.3 git commit -e -F commitlog.txt git am -3 /tmp/v8_patch In the likely case of conflicts, follow the git instructions about continuing the patch application process after resolving the conflicts.