This builds V8 and php-v8js on Ubuntu 20.04 Focal, 22.04 Jammy and 24.04 Noble, depending which docker image you use .

Modify the versions to your needs in build.sh:

LIBV8_BUILD_VERSIONS
PHP_VERSION
PHP_V8JS_REPO
PHP_V8JS_REPO_COMMIT
PHP_V8JS_VERSION

There might be more recent forks of v8js repo: https://github.com/phpv8/v8js/forks . There's a convenient page showing how many commits ahead or behind the forks are from the base repo : https://useful-forks.github.io/?repo=phpv8/v8js . You need to add your Github Account access token to the page (upper right corner) as Github rate-limits anonymous API requests.

Steps

1. Start and get into the Ubuntu docker container.

This will mount the current path. All files are going to be created inside folder build. With using --rm the container and all it's content (but not the mounted current path) will be removed after you exit.

# 20.04 Focal
docker run -it -v $(pwd):/mount -w /mount --name ubuntu2004-libv8-packaging ubuntu:focal

# 22.04 Jammy
docker run -it -v $(pwd):/mount -w /mount --name ubuntu2204-libv8-packaging ubuntu:jammy

# 24.04 Noble
docker run -it -v $(pwd):/mount -w /mount --name ubuntu2404-libv8-packaging ubuntu:noble

2. Inside the container run:

./build.sh

The result are 2 .deb files, example:

libv8/libv8_12.0.267-jammy_amd64.deb
v8js/php8.3-v8js_2.1.2-phpv8-v8js-1b521b3-libv8-12.0.267-jammy_amd64.deb