--- type: reference, howto --- # License Compliance **(ULTIMATE)** > [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/5483) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.0. ## Overview If you are using [GitLab CI/CD](../../../ci/README.md), you can search your project dependencies for their licenses using License Compliance. You can take advantage of License Compliance by either [including the job](#configuration) in your existing `.gitlab-ci.yml` file or by implicitly using [Auto License Compliance](../../../topics/autodevops/index.md#auto-license-compliance-ultimate) that is provided by [Auto DevOps](../../../topics/autodevops/index.md). GitLab checks the License Compliance report, compares the licenses between the source and target branches, and shows the information right on the merge request. Blacklisted licenses will be clearly visible with an `x` red icon next to them as well as new licenses which need a decision from you. In addition, you can [manually approve or blacklist](#project-policies-for-license-compliance) licenses in your project's settings. NOTE: **Note:** If the license compliance report doesn't have anything to compare to, no information will be displayed in the merge request area. That is the case when you add the `license_management` job in your `.gitlab-ci.yml` for the first time. Consecutive merge requests will have something to compare to and the license compliance report will be shown properly. ![License Compliance Widget](img/license_compliance.png) If you are a project or group Maintainer, you can click on a license to be given the choice to approve it or blacklist it. ![License approval decision](img/license_compliance_decision.png) ## Use cases It helps you find what licenses your project uses in its dependencies, and decide for each of then whether to allow it or forbid it. For example, your application is using an external (open source) library whose license is incompatible with yours. ## Supported languages and package managers The following languages and package managers are supported. | Language | Package managers | Scan Tool | |------------|-------------------------------------------------------------------|----------------------------------------------------------| | JavaScript | [Bower](https://bower.io/), [npm](https://www.npmjs.com/), [yarn](https://yarnpkg.com/) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)) |[License Finder](https://github.com/pivotal/LicenseFinder)| | Go | [Godep](https://github.com/tools/godep), go get ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)), gvt ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)), glide ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)), dep ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)), trash ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)) and govendor ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)), [go mod](https://github.com/golang/go/wiki/Modules) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)) |[License Finder](https://github.com/pivotal/LicenseFinder)| | Java | [Gradle](https://gradle.org/), [Maven](https://maven.apache.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)| | .NET | [Nuget](https://www.nuget.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)| | Python | [pip](https://pip.pypa.io/en/stable/) |[License Finder](https://github.com/pivotal/LicenseFinder)| | Ruby | [gem](https://rubygems.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)| | Erlang | [rebar](https://www.rebar3.org/) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types))|[License Finder](https://github.com/pivotal/LicenseFinder)| | Objective-C, Swift | [Carthage](https://github.com/Carthage/Carthage) , [CocoaPods v0.39 and below](https://cocoapods.org/) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)) |[License Finder](https://github.com/pivotal/LicenseFinder)| | Elixir | [mix](https://elixir-lang.org/getting-started/mix-otp/introduction-to-mix.html) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types)) |[License Finder](https://github.com/pivotal/LicenseFinder)| | C++/C | [conan](https://conan.io/) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types))|[License Finder](https://github.com/pivotal/LicenseFinder)| | Scala | [sbt](https://www.scala-sbt.org/) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types))|[License Finder](https://github.com/pivotal/LicenseFinder)| | Rust | [cargo](https://crates.io) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types))|[License Finder](https://github.com/pivotal/LicenseFinder)| | PHP | [composer](https://getcomposer.org/) ([experimental support](https://github.com/pivotal/LicenseFinder#experimental-project-types))|[License Finder](https://github.com/pivotal/LicenseFinder)| ## Requirements To run a License Compliance scanning job, you need GitLab Runner with the [`docker` executor](https://docs.gitlab.com/runner/executors/docker.html). ## Configuration For GitLab 11.9 and later, to enable License Compliance, you must [include](../../../ci/yaml/README.md#includetemplate) the [`License-Management.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/blob/master/lib/gitlab/ci/templates/Security/License-Management.gitlab-ci.yml) that's provided as a part of your GitLab installation. For GitLab versions earlier than 11.9, you can copy and use the job as defined that template. Add the following to your `.gitlab-ci.yml` file: ```yaml include: template: License-Management.gitlab-ci.yml ``` The included template will create a `license_management` job in your CI/CD pipeline and scan your dependencies to find their licenses. The results will be saved as a [License Compliance report artifact](../../../ci/yaml/README.md#artifactsreportslicense_management-ultimate) that you can later download and analyze. Due to implementation limitations, we always take the latest License Compliance artifact available. Behind the scenes, the [GitLab License Compliance Docker image](https://gitlab.com/gitlab-org/security-products/license-management) is used to detect the languages/frameworks and in turn analyzes the licenses. The License Compliance settings can be changed through environment variables by using the [`variables`](../../../ci/yaml/README.md#variables) parameter in `.gitlab-ci.yml`. These variables are documented in the [License Compliance documentation](https://gitlab.com/gitlab-org/security-products/license-management#settings). ### Installing custom dependencies > Introduced in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.4. The `license_management` image already embeds many auto-detection scripts, languages, and packages. Nevertheless, it's almost impossible to cover all cases for all projects. That's why sometimes it's necessary to install extra packages, or to have extra steps in the project automated setup, like the download and installation of a certificate. For that, a `LICENSE_MANAGEMENT_SETUP_CMD` environment variable can be passed to the container, with the required commands to run before the license detection. If present, this variable will override the setup step necessary to install all the packages of your application (e.g.: for a project with a `Gemfile`, the setup step could be `bundle install`). For example: ```yaml include: template: License-Management.gitlab-ci.yml variables: LICENSE_MANAGEMENT_SETUP_CMD: sh my-custom-install-script.sh ``` In this example, `my-custom-install-script.sh` is a shell script at the root directory of your project. ### Overriding the template If you want to override the job definition (for example, change properties like `variables` or `dependencies`), you need to declare a `license_management` job after the template inclusion and specify any additional keys under it. For example: ```yaml include: template: License-Management.gitlab-ci.yml license_management: variables: CI_DEBUG_TRACE: "true" ``` ### Configuring Maven projects The License Compliance tool provides a `MAVEN_CLI_OPTS` environment variable which can hold the command line arguments to pass to the `mvn install` command which is executed under the hood. Feel free to use it for the customization of Maven execution. For example: ```yaml include: template: License-Management.gitlab-ci.yml license_management: variables: MAVEN_CLI_OPTS: --debug ``` `mvn install` runs through all of the [build life cycle](http://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html) stages prior to `install`, including `test`. Running unit tests is not directly necessary for the license scanning purposes and consumes time, so it's skipped by having the default value of `MAVEN_CLI_OPTS` as `-DskipTests`. If you want to supply custom `MAVEN_CLI_OPTS` and skip tests at the same time, don't forget to explicitly add `-DskipTests` to your options. If you still need to run tests during `mvn install`, add `-DskipTests=false` to `MAVEN_CLI_OPTS`. ### Selecting the version of Python > - [Introduced](https://gitlab.com/gitlab-org/security-products/license-management/merge_requests/36) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 12.0. > - In GitLab 12.2, Python 3.5 became the default. License Compliance uses Python 3.5 and pip 19.1 by default. If your project requires Python 2, you can switch to Python 2.7 and pip 10.0 by setting the `LM_PYTHON_VERSION` environment variable to `2`. ```yaml include: template: License-Management.gitlab-ci.yml license_management: variables: LM_PYTHON_VERSION: 2 ``` ## Project policies for License Compliance > [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/5940) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.4. From the project's settings: - The list of licenses and their status can be managed. - Licenses can be manually approved or blacklisted. To approve or blacklist a license: 1. Either use the **Manage licenses** button in the merge request widget, or navigate to the project's **Settings > CI/CD** and expand the **License Compliance** section. 1. Click the **Add a license** button. ![License Compliance Add License](img/license_compliance_add_license_v12_3.png) 1. In the **License name** dropdown, either: - Select one of the available licenses. You can search for licenses in the field at the top of the list. - Enter arbitrary text in the field at the top of the list. This will cause the text to be added as a license name to the list. 1. Select the **Approve** or **Blacklist** radio button to approve or blacklist respectively the selected license. To modify an existing license: 1. In the **License Compliance** list, click the **Approved/Declined** dropdown to change it to the desired status. ![License Compliance Settings](img/license_compliance_settings_v12_3.png) Searching for Licenses: 1. Use the **Search** box to search for a specific license. ![License Compliance Search](img/license_compliance_search_v12_3.png) ## License Compliance report under pipelines > [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/5491) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.2. From your project's left sidebar, navigate to **CI/CD > Pipelines** and click on the pipeline ID that has a `license_management` job to see the Licenses tab with the listed licenses (if any). ![License Compliance Pipeline Tab](img/license_compliance_pipeline_tab_v12_3.png)