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Daniel P. Berrangé 156315cff4 gitlab: avoid building libvirt twice and running syntax-check twice 
In the distros using RPMs, we build libvirt once as a side effect
of running "ninja dist", and once via rpmbuild.

In addition "ninja dist" will run all tests including the "syntax-check"
suite, despite use having a separate "codestyle" job for for that.

There is no way to pass "--no-suite" when creating the dist, but if we
switch to invoking "meson dist", we can skip the build+test part
entirely  using "--no-tests".

When doing this we then run explicit "meson compile" and "meson test"
commands for the distros that don't build the RPMs, and in the latter
case we can now skip the "syntax-check" suite.

The RPM builds already skipped the "syntax-check" suite.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-05-12 14:18:15 +01:00
..
cirrus gitlab: avoid building libvirt twice and running syntax-check twice 2021-05-12 14:18:15 +01:00
containers ci: Drop CentOS 7 2021-05-05 13:25:21 +02:00
build.sh ci: Specify the shebang sequence for build.sh 2021-02-12 17:01:41 +01:00
helper ci: Drop prefix from Dockerfiles 2021-03-22 11:40:57 +01:00
Makefile ci: helper: Rewrite image listing to Python 2021-03-19 11:47:26 +01:00
README.rst ci: README: Mention necessary step for cirrus to pick up the github project 2021-04-12 16:38:11 +02:00
util.py ci: util: Add a registry checker for stale images 2021-03-19 11:50:07 +01:00

README.rst

CI for libvirt

This document provides some information related to the CI capabilities for the libvirt project.

Cirrus CI integration

libvirt currently supports three non-Linux operating systems: Windows, FreeBSD and macOS. Windows cross-builds can be prepared on Linux by using MinGW, but for both FreeBSD and macOS we need to use the actual operating system, and unfortunately GitLab shared runners are currently not available for either.

To work around this limitation, we take advantage of Cirrus CI's free offering: more specifically, we use the cirrus-run script to trigger Cirrus CI jobs from GitLab CI jobs so that the workaround is almost entirely transparent to users and there's no need to constantly check two separate CI dashboards.

There is, however, some one-time setup required. If you want FreeBSD and macOS builds to happen when you push to your GitLab repository, you need to

  • set up a GitHub repository for the project, eg. yourusername/libvirt. This repository needs to exist for cirrus-run to work, but it doesn't need to be kept up to date, so you can create it and then forget about it;

  • enable the Cirrus CI GitHub app for your GitHub account;

  • sign up for Cirrus CI. It's enough to log into the website using your GitHub account;

  • grab an API token from the Cirrus CI settings page;

  • it may be necessary to push an empty .cirrus.yml file to your github fork for Cirrus CI to properly recognize the project. You can check whether Cirrus CI knows about your project by navigating to:

    https://cirrus-ci.com/yourusername/libvirt

  • in the CI/CD / Variables section of the settings page for your GitLab repository, create two new variables:

    • CIRRUS_GITHUB_REPO, containing the name of the GitHub repository created earlier, eg. yourusername/libvirt;
    • CIRRUS_API_TOKEN, containing the Cirrus CI API token generated earlier. This variable must be marked as Masked, because anyone with knowledge of it can impersonate you as far as Cirrus CI is concerned.

    Neither of these variables should be marked as Protected, because in general you'll want to be able to trigger Cirrus CI builds from non-protected branches.

Once this one-time setup is complete, you can just keep pushing to your GitLab repository as usual and you'll automatically get the additional CI coverage.