dash/ci
MarcoFalke 14a67ee85e
Merge #20182: ci: Build with --enable-werror by default, and document exceptions
2f6fe4e4e9e9e35e713c0a20cf891b023592110a ci: Build with --enable-werror by default, and document exceptions (Hennadii Stepanov)

Pull request description:

  This PR prevents introducing of new compiler warnings in the master branch, e.g., #19986, #20162.

ACKs for top commit:
  practicalswift:
    cr ACK 2f6fe4e4e9e9e35e713c0a20cf891b023592110a: patch looks correct
  MarcoFalke:
    re-ACK 2f6fe4e4e9 🏏
  vasild:
    ACK 2f6fe4e

Tree-SHA512: 23b5feb5bc472658c992d882ef61af23496f25adaa19f9c79bfaef5d2db273d44981aa93b1631a7d37cb58755283c1dacf3f2d68e501522d3fa8c965ab646d19
2024-04-03 16:03:26 +07:00
..
dash Merge #20182: ci: Build with --enable-werror by default, and document exceptions 2024-04-03 16:03:26 +07:00
lint Merge #20817: lint: update list of spelling linter false positives, bump to codespell 2.0.0 2024-03-27 00:48:28 +07:00
retry Merge #17284: build: update retry to current version 2022-04-03 18:08:40 -05:00
test Merge #20182: ci: Build with --enable-werror by default, and document exceptions 2024-04-03 16:03:26 +07:00
lint_run_all.sh Merge #20697: ci: Fix COMMIT_RANGE variable value for PRs 2024-03-27 00:48:27 +07:00
README.md Merge #19267: ci: Upgrade most ci configs to focal 2024-01-22 19:47:11 -06:00
test_run_all.sh Merge #20691: ci, doc: Travis CI features and mentions cleanup 2024-03-27 00:48:26 +07:00

CI Scripts

This directory contains scripts for each build step in each build stage.

Running a Stage Locally

Be aware that the tests will be built and run in-place, so please run at your own risk. If the repository is not a fresh git clone, you might have to clean files from previous builds or test runs first.

The ci needs to perform various sysadmin tasks such as installing packages or writing to the user's home directory. While most of the actions are done inside a docker container, this is not possible for all. Thus, cache directories, such as the depends cache, previous release binaries, or ccache, are mounted as read-write into the docker container. While it should be fine to run the ci system locally on you development box, the ci scripts can generally be assumed to have received less review and testing compared to other parts of the codebase. If you want to keep the work tree clean, you might want to run the ci system in a virtual machine with a Linux operating system of your choice.

To allow for a wide range of tested environments, but also ensure reproducibility to some extent, the test stage requires docker to be installed. To install all requirements on Ubuntu, run

sudo apt install docker.io bash

To run the default test stage,

./ci/test_run_all.sh

To run the test stage with a specific configuration,

FILE_ENV="./ci/test/00_setup_env_arm.sh" ./ci/test_run_all.sh

Configurations

The test files (FILE_ENV) are constructed to test a wide range of configurations, rather than a single pass/fail. This helps to catch build failures and logic errors that present on platforms other than the ones the author has tested.

Some builders use the dependency-generator in ./depends, rather than using the system package manager to install build dependencies. This guarantees that the tester is using the same versions as the release builds, which also use ./depends.

If no FILE_ENV has been specified or values are left out, 00_setup_env.sh is used as the default configuration with fallback values.

It is also possible to force a specific configuration without modifying the file. For example,

MAKEJOBS="-j1" FILE_ENV="./ci/test/00_setup_env_arm.sh" ./ci/test_run_all.sh

The files starting with 0n (n greater than 0) are the scripts that are run in order.

Cache

In order to avoid rebuilding all dependencies for each build, the binaries are cached and re-used when possible. Changes in the dependency-generator will trigger cache-invalidation and rebuilds as necessary.